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.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label24_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 01:13:18,286 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 01:13:18,291 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 01:13:18,305 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 01:13:18,305 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 01:13:18,307 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 01:13:18,310 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 01:13:18,313 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 01:13:18,316 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 01:13:18,317 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 01:13:18,319 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 01:13:18,319 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 01:13:18,326 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 01:13:18,327 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 01:13:18,330 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 01:13:18,333 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 01:13:18,334 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 01:13:18,337 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 01:13:18,341 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 01:13:18,343 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 01:13:18,344 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 01:13:18,347 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 01:13:18,350 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 01:13:18,350 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 01:13:18,350 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 01:13:18,351 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 01:13:18,352 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 01:13:18,353 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 01:13:18,355 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 01:13:18,357 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 01:13:18,358 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 01:13:18,359 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 01:13:18,359 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 01:13:18,359 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 01:13:18,362 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 01:13:18,362 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 01:13:18,363 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-11-07 01:13:18,389 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 01:13:18,389 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 01:13:18,390 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 01:13:18,390 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 01:13:18,391 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 01:13:18,391 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 01:13:18,391 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 01:13:18,391 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 01:13:18,392 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 01:13:18,392 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 01:13:18,392 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 01:13:18,392 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 01:13:18,393 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 01:13:18,393 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 01:13:18,393 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 01:13:18,393 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 01:13:18,394 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 01:13:18,394 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 01:13:18,394 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 01:13:18,395 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 01:13:18,395 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 01:13:18,396 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 01:13:18,396 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 01:13:18,396 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 01:13:18,396 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 01:13:18,396 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 01:13:18,397 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 01:13:18,397 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 01:13:18,397 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 01:13:18,397 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 01:13:18,397 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 01:13:18,398 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 01:13:18,398 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 01:13:18,399 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 01:13:18,454 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 01:13:18,471 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 01:13:18,475 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 01:13:18,477 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 01:13:18,478 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 01:13:18,478 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label24_true-unreach-call_false-termination.c [2018-11-07 01:13:18,551 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e964e4044/c076a97a32064d2c84af8d676881fc49/FLAGd862dbdb3 [2018-11-07 01:13:19,218 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 01:13:19,222 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem02_label24_true-unreach-call_false-termination.c [2018-11-07 01:13:19,242 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e964e4044/c076a97a32064d2c84af8d676881fc49/FLAGd862dbdb3 [2018-11-07 01:13:19,257 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e964e4044/c076a97a32064d2c84af8d676881fc49 [2018-11-07 01:13:19,268 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 01:13:19,270 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 01:13:19,271 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 01:13:19,271 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 01:13:19,276 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 01:13:19,277 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:13:19" (1/1) ... [2018-11-07 01:13:19,280 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2228132a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:13:19, skipping insertion in model container [2018-11-07 01:13:19,280 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:13:19" (1/1) ... [2018-11-07 01:13:19,292 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 01:13:19,368 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 01:13:19,835 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 01:13:19,840 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 01:13:19,951 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 01:13:19,981 INFO L193 MainTranslator]: Completed translation [2018-11-07 01:13:19,982 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:13:19 WrapperNode [2018-11-07 01:13:19,982 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 01:13:19,983 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 01:13:19,984 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 01:13:19,984 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 01:13:19,996 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:13:19" (1/1) ... [2018-11-07 01:13:20,130 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:13:19" (1/1) ... [2018-11-07 01:13:20,143 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 01:13:20,143 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 01:13:20,144 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 01:13:20,144 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 01:13:20,155 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:13:19" (1/1) ... [2018-11-07 01:13:20,155 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:13:19" (1/1) ... [2018-11-07 01:13:20,160 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:13:19" (1/1) ... [2018-11-07 01:13:20,161 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:13:19" (1/1) ... [2018-11-07 01:13:20,205 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:13:19" (1/1) ... [2018-11-07 01:13:20,232 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:13:19" (1/1) ... [2018-11-07 01:13:20,240 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:13:19" (1/1) ... [2018-11-07 01:13:20,255 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 01:13:20,256 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 01:13:20,256 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 01:13:20,256 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 01:13:20,257 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:13:19" (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 01:13:20,337 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 01:13:20,337 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 01:13:20,338 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 01:13:20,340 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 01:13:20,340 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 01:13:20,340 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 01:13:20,340 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 01:13:20,340 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 01:13:20,341 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 01:13:23,608 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 01:13:23,614 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:13:23 BoogieIcfgContainer [2018-11-07 01:13:23,614 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 01:13:23,615 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 01:13:23,615 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 01:13:23,623 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 01:13:23,624 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:13:19" (1/3) ... [2018-11-07 01:13:23,624 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32e71040 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:13:23, skipping insertion in model container [2018-11-07 01:13:23,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:13:19" (2/3) ... [2018-11-07 01:13:23,625 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32e71040 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:13:23, skipping insertion in model container [2018-11-07 01:13:23,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:13:23" (3/3) ... [2018-11-07 01:13:23,629 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem02_label24_true-unreach-call_false-termination.c [2018-11-07 01:13:23,641 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 01:13:23,655 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 01:13:23,677 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 01:13:23,731 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 01:13:23,731 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 01:13:23,732 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 01:13:23,732 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 01:13:23,732 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 01:13:23,732 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 01:13:23,732 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 01:13:23,732 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 01:13:23,762 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states. [2018-11-07 01:13:23,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2018-11-07 01:13:23,776 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 01:13:23,778 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] [2018-11-07 01:13:23,780 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 01:13:23,786 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 01:13:23,787 INFO L82 PathProgramCache]: Analyzing trace with hash -1658764377, now seen corresponding path program 1 times [2018-11-07 01:13:23,789 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 01:13:23,842 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:13:23,842 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 01:13:23,842 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:13:23,842 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 01:13:24,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 01:13:24,398 WARN L179 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 01:13:24,542 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 01:13:24,545 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 01:13:24,545 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 01:13:24,546 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 01:13:24,555 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 01:13:24,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 01:13:24,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 01:13:24,576 INFO L87 Difference]: Start difference. First operand 237 states. Second operand 3 states. [2018-11-07 01:13:26,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 01:13:26,152 INFO L93 Difference]: Finished difference Result 621 states and 1060 transitions. [2018-11-07 01:13:26,155 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 01:13:26,156 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 121 [2018-11-07 01:13:26,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 01:13:26,177 INFO L225 Difference]: With dead ends: 621 [2018-11-07 01:13:26,177 INFO L226 Difference]: Without dead ends: 382 [2018-11-07 01:13:26,186 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 01:13:26,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2018-11-07 01:13:26,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 381. [2018-11-07 01:13:26,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 381 states. [2018-11-07 01:13:26,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 637 transitions. [2018-11-07 01:13:26,304 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 637 transitions. Word has length 121 [2018-11-07 01:13:26,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 01:13:26,305 INFO L480 AbstractCegarLoop]: Abstraction has 381 states and 637 transitions. [2018-11-07 01:13:26,306 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 01:13:26,306 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 637 transitions. [2018-11-07 01:13:26,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-11-07 01:13:26,321 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 01:13:26,323 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] [2018-11-07 01:13:26,324 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 01:13:26,324 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 01:13:26,324 INFO L82 PathProgramCache]: Analyzing trace with hash -1422747334, now seen corresponding path program 1 times [2018-11-07 01:13:26,326 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 01:13:26,327 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:13:26,328 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 01:13:26,328 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:13:26,329 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 01:13:26,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 01:13:26,866 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 01:13:26,866 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 01:13:26,867 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 01:13:26,867 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 01:13:26,869 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 01:13:26,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 01:13:26,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-07 01:13:26,870 INFO L87 Difference]: Start difference. First operand 381 states and 637 transitions. Second operand 5 states. [2018-11-07 01:13:28,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 01:13:28,525 INFO L93 Difference]: Finished difference Result 901 states and 1555 transitions. [2018-11-07 01:13:28,527 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 01:13:28,527 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 130 [2018-11-07 01:13:28,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 01:13:28,533 INFO L225 Difference]: With dead ends: 901 [2018-11-07 01:13:28,534 INFO L226 Difference]: Without dead ends: 380 [2018-11-07 01:13:28,538 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-07 01:13:28,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2018-11-07 01:13:28,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 380. [2018-11-07 01:13:28,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 380 states. [2018-11-07 01:13:28,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 632 transitions. [2018-11-07 01:13:28,565 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 632 transitions. Word has length 130 [2018-11-07 01:13:28,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 01:13:28,566 INFO L480 AbstractCegarLoop]: Abstraction has 380 states and 632 transitions. [2018-11-07 01:13:28,566 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 01:13:28,566 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 632 transitions. [2018-11-07 01:13:28,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2018-11-07 01:13:28,570 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 01:13:28,570 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:13:28,571 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 01:13:28,571 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 01:13:28,571 INFO L82 PathProgramCache]: Analyzing trace with hash -2099227971, now seen corresponding path program 1 times [2018-11-07 01:13:28,572 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 01:13:28,573 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:13:28,573 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 01:13:28,573 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:13:28,573 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 01:13:28,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 01:13:28,826 WARN L179 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 01:13:29,009 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 01:13:29,009 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 01:13:29,010 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 01:13:29,010 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 01:13:29,011 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 01:13:29,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 01:13:29,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 01:13:29,012 INFO L87 Difference]: Start difference. First operand 380 states and 632 transitions. Second operand 6 states. [2018-11-07 01:13:31,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 01:13:31,620 INFO L93 Difference]: Finished difference Result 1184 states and 2066 transitions. [2018-11-07 01:13:31,620 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 01:13:31,621 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 155 [2018-11-07 01:13:31,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 01:13:31,634 INFO L225 Difference]: With dead ends: 1184 [2018-11-07 01:13:31,635 INFO L226 Difference]: Without dead ends: 810 [2018-11-07 01:13:31,638 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 01:13:31,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 810 states. [2018-11-07 01:13:31,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 810 to 800. [2018-11-07 01:13:31,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 800 states. [2018-11-07 01:13:31,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 800 states to 800 states and 1274 transitions. [2018-11-07 01:13:31,723 INFO L78 Accepts]: Start accepts. Automaton has 800 states and 1274 transitions. Word has length 155 [2018-11-07 01:13:31,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 01:13:31,723 INFO L480 AbstractCegarLoop]: Abstraction has 800 states and 1274 transitions. [2018-11-07 01:13:31,723 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 01:13:31,724 INFO L276 IsEmpty]: Start isEmpty. Operand 800 states and 1274 transitions. [2018-11-07 01:13:31,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2018-11-07 01:13:31,728 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 01:13:31,728 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:13:31,728 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 01:13:31,731 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 01:13:31,731 INFO L82 PathProgramCache]: Analyzing trace with hash -1213735243, now seen corresponding path program 1 times [2018-11-07 01:13:31,731 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 01:13:31,733 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:13:31,733 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 01:13:31,733 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:13:31,733 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 01:13:31,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 01:13:31,945 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 01:13:31,946 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 01:13:31,946 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 01:13:31,946 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 01:13:31,947 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 01:13:31,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 01:13:31,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 01:13:31,948 INFO L87 Difference]: Start difference. First operand 800 states and 1274 transitions. Second operand 3 states. [2018-11-07 01:13:33,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 01:13:33,672 INFO L93 Difference]: Finished difference Result 2306 states and 3791 transitions. [2018-11-07 01:13:33,672 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 01:13:33,673 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 156 [2018-11-07 01:13:33,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 01:13:33,688 INFO L225 Difference]: With dead ends: 2306 [2018-11-07 01:13:33,689 INFO L226 Difference]: Without dead ends: 1512 [2018-11-07 01:13:33,694 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 01:13:33,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1512 states. [2018-11-07 01:13:33,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1512 to 1507. [2018-11-07 01:13:33,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1507 states. [2018-11-07 01:13:33,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1507 states to 1507 states and 2312 transitions. [2018-11-07 01:13:33,766 INFO L78 Accepts]: Start accepts. Automaton has 1507 states and 2312 transitions. Word has length 156 [2018-11-07 01:13:33,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 01:13:33,768 INFO L480 AbstractCegarLoop]: Abstraction has 1507 states and 2312 transitions. [2018-11-07 01:13:33,768 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 01:13:33,768 INFO L276 IsEmpty]: Start isEmpty. Operand 1507 states and 2312 transitions. [2018-11-07 01:13:33,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2018-11-07 01:13:33,777 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 01:13:33,778 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 01:13:33,778 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 01:13:33,778 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 01:13:33,778 INFO L82 PathProgramCache]: Analyzing trace with hash -1427113375, now seen corresponding path program 1 times [2018-11-07 01:13:33,779 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 01:13:33,780 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:13:33,780 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 01:13:33,780 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:13:33,780 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 01:13:33,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 01:13:34,101 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 24 [2018-11-07 01:13:34,147 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 44 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 01:13:34,147 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 01:13:34,147 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 01:13:34,148 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 174 with the following transitions: [2018-11-07 01:13:34,151 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [26], [30], [34], [38], [42], [53], [64], [68], [72], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [152], [156], [160], [171], [175], [179], [183], [187], [191], [195], [198], [199], [210], [214], [218], [222], [233], [237], [241], [245], [249], [253], [257], [268], [272], [283], [287], [298], [309], [313], [317], [321], [325], [329], [333], [344], [348], [352], [356], [360], [364], [368], [372], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [547], [555], [563], [571], [579], [587], [595], [603], [611], [619], [627], [635], [639], [641], [863], [867], [871], [877], [881], [883], [888], [889], [890], [892], [893] [2018-11-07 01:13:34,234 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 01:13:34,235 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 01:14:04,639 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 01:14:04,641 INFO L272 AbstractInterpreter]: Visited 124 different actions 242 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 38 variables. [2018-11-07 01:14:04,678 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 01:14:04,679 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 01:14:11,763 INFO L227 lantSequenceWeakener]: Weakened 62 states. On average, predicates are now at 82.39% of their original sizes. [2018-11-07 01:14:11,763 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 01:15:14,501 INFO L415 sIntCurrentIteration]: We unified 172 AI predicates to 172 [2018-11-07 01:15:14,502 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 01:15:14,503 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 01:15:14,503 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [6] total 22 [2018-11-07 01:15:14,503 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 01:15:14,503 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-07 01:15:14,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-07 01:15:14,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2018-11-07 01:15:14,504 INFO L87 Difference]: Start difference. First operand 1507 states and 2312 transitions. Second operand 18 states. Received shutdown request... [2018-11-07 01:17:38,069 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-11-07 01:17:38,069 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 01:17:38,074 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 01:17:38,075 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 01:17:38 BoogieIcfgContainer [2018-11-07 01:17:38,075 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 01:17:38,076 INFO L168 Benchmark]: Toolchain (without parser) took 258807.24 ms. Allocated memory was 1.5 GB in the beginning and 3.9 GB in the end (delta: 2.4 GB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -776.3 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. [2018-11-07 01:17:38,077 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 01:17:38,078 INFO L168 Benchmark]: CACSL2BoogieTranslator took 712.08 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-11-07 01:17:38,079 INFO L168 Benchmark]: Boogie Procedure Inliner took 159.87 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 717.2 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -800.7 MB). Peak memory consumption was 18.3 MB. Max. memory is 7.1 GB. [2018-11-07 01:17:38,080 INFO L168 Benchmark]: Boogie Preprocessor took 111.79 ms. Allocated memory is still 2.2 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 01:17:38,080 INFO L168 Benchmark]: RCFGBuilder took 3358.12 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 105.0 MB). Peak memory consumption was 105.0 MB. Max. memory is 7.1 GB. [2018-11-07 01:17:38,081 INFO L168 Benchmark]: TraceAbstraction took 254460.19 ms. Allocated memory was 2.2 GB in the beginning and 3.9 GB in the end (delta: 1.7 GB). Free memory was 2.1 GB in the beginning and 2.2 GB in the end (delta: -112.2 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. [2018-11-07 01:17:38,086 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 712.08 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 159.87 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 717.2 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -800.7 MB). Peak memory consumption was 18.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 111.79 ms. Allocated memory is still 2.2 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 3358.12 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 105.0 MB). Peak memory consumption was 105.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 254460.19 ms. Allocated memory was 2.2 GB in the beginning and 3.9 GB in the end (delta: 1.7 GB). Free memory was 2.1 GB in the beginning and 2.2 GB in the end (delta: -112.2 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 514]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 514). Cancelled while BasicCegarLoop was constructing difference of abstraction (1507states) and FLOYD_HOARE automaton (currently 23 states, 18 states before enhancement),while ReachableStatesComputation was computing reachable states (1169 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 237 locations, 1 error locations. TIMEOUT Result, 254.3s OverallTime, 5 OverallIterations, 2 TraceHistogramMax, 151.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 859 SDtfs, 2608 SDslu, 328 SDs, 0 SdLazy, 3251 SolverSat, 753 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 64.0s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 207 GetRequests, 142 SyntacticMatches, 28 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 370 ImplicationChecksByTransitivity, 70.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1507occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 30.5s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9955464950874989 AbsIntWeakeningRatio, 0.1569767441860465 AbsIntAvgWeakeningVarsNumRemoved, 1272.9709302325582 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 4 MinimizatonAttempts, 16 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 735 NumberOfCodeBlocks, 735 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 730 ConstructedInterpolants, 0 QuantifiedInterpolants, 495484 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 113/118 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown