java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label28_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 05:18:32,323 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 05:18:32,325 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 05:18:32,339 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 05:18:32,339 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 05:18:32,340 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 05:18:32,342 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 05:18:32,344 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 05:18:32,347 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 05:18:32,348 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 05:18:32,350 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 05:18:32,350 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 05:18:32,351 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 05:18:32,353 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 05:18:32,355 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 05:18:32,365 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 05:18:32,366 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 05:18:32,368 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 05:18:32,373 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 05:18:32,374 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 05:18:32,377 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 05:18:32,379 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 05:18:32,384 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 05:18:32,384 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 05:18:32,385 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 05:18:32,386 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 05:18:32,387 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 05:18:32,390 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 05:18:32,390 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 05:18:32,391 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 05:18:32,392 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 05:18:32,394 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 05:18:32,396 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 05:18:32,396 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 05:18:32,397 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 05:18:32,399 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 05:18:32,399 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-11-07 05:18:32,419 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 05:18:32,419 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 05:18:32,420 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 05:18:32,420 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 05:18:32,421 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 05:18:32,421 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 05:18:32,421 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-07 05:18:32,421 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 05:18:32,421 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 05:18:32,422 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 05:18:32,422 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 05:18:32,422 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 05:18:32,422 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 05:18:32,422 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 05:18:32,423 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 05:18:32,423 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 05:18:32,424 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 05:18:32,424 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 05:18:32,424 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 05:18:32,424 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 05:18:32,425 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 05:18:32,425 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 05:18:32,425 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 05:18:32,425 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 05:18:32,426 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 05:18:32,426 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 05:18:32,426 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 05:18:32,426 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 05:18:32,426 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 05:18:32,427 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 05:18:32,427 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 05:18:32,427 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 05:18:32,427 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 05:18:32,427 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 05:18:32,428 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 05:18:32,428 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 05:18:32,493 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 05:18:32,509 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 05:18:32,514 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 05:18:32,516 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 05:18:32,516 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 05:18:32,517 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label28_false-unreach-call.c [2018-11-07 05:18:32,583 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a6bf109f/037eca4b9afd4d9a817a8a8cb43fe2ee/FLAG76b6432a7 [2018-11-07 05:18:33,268 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 05:18:33,269 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label28_false-unreach-call.c [2018-11-07 05:18:33,285 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a6bf109f/037eca4b9afd4d9a817a8a8cb43fe2ee/FLAG76b6432a7 [2018-11-07 05:18:33,303 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a6bf109f/037eca4b9afd4d9a817a8a8cb43fe2ee [2018-11-07 05:18:33,314 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 05:18:33,316 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 05:18:33,317 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 05:18:33,317 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 05:18:33,321 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 05:18:33,322 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 05:18:33" (1/1) ... [2018-11-07 05:18:33,325 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2964f187 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:18:33, skipping insertion in model container [2018-11-07 05:18:33,325 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 05:18:33" (1/1) ... [2018-11-07 05:18:33,336 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 05:18:33,419 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 05:18:34,142 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 05:18:34,147 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 05:18:34,417 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 05:18:34,443 INFO L193 MainTranslator]: Completed translation [2018-11-07 05:18:34,444 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:18:34 WrapperNode [2018-11-07 05:18:34,444 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 05:18:34,445 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 05:18:34,445 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 05:18:34,445 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 05:18:34,456 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:18:34" (1/1) ... [2018-11-07 05:18:34,633 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:18:34" (1/1) ... [2018-11-07 05:18:34,644 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 05:18:34,644 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 05:18:34,645 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 05:18:34,645 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 05:18:34,657 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:18:34" (1/1) ... [2018-11-07 05:18:34,657 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:18:34" (1/1) ... [2018-11-07 05:18:34,663 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:18:34" (1/1) ... [2018-11-07 05:18:34,663 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:18:34" (1/1) ... [2018-11-07 05:18:34,743 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:18:34" (1/1) ... [2018-11-07 05:18:34,757 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:18:34" (1/1) ... [2018-11-07 05:18:34,774 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:18:34" (1/1) ... [2018-11-07 05:18:34,787 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 05:18:34,788 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 05:18:34,788 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 05:18:34,788 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 05:18:34,789 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:18:34" (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 05:18:34,855 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 05:18:34,855 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 05:18:34,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 05:18:34,856 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 05:18:34,856 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 05:18:34,856 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 05:18:34,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 05:18:34,857 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 05:18:34,857 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 05:18:39,341 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 05:18:39,342 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 05:18:39 BoogieIcfgContainer [2018-11-07 05:18:39,342 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 05:18:39,343 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 05:18:39,343 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 05:18:39,350 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 05:18:39,353 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 05:18:33" (1/3) ... [2018-11-07 05:18:39,354 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3304c905 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 05:18:39, skipping insertion in model container [2018-11-07 05:18:39,354 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:18:34" (2/3) ... [2018-11-07 05:18:39,355 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3304c905 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 05:18:39, skipping insertion in model container [2018-11-07 05:18:39,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 05:18:39" (3/3) ... [2018-11-07 05:18:39,359 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label28_false-unreach-call.c [2018-11-07 05:18:39,372 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 05:18:39,384 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 05:18:39,405 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 05:18:39,459 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 05:18:39,459 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 05:18:39,459 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 05:18:39,460 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 05:18:39,460 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 05:18:39,460 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 05:18:39,460 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 05:18:39,460 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 05:18:39,504 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2018-11-07 05:18:39,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2018-11-07 05:18:39,528 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 05:18:39,530 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] [2018-11-07 05:18:39,534 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 05:18:39,541 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 05:18:39,542 INFO L82 PathProgramCache]: Analyzing trace with hash 2014682908, now seen corresponding path program 1 times [2018-11-07 05:18:39,545 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 05:18:39,604 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 05:18:39,604 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 05:18:39,605 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 05:18:39,605 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 05:18:39,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 05:18:40,480 WARN L179 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 05:18:40,676 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 05:18:40,678 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 05:18:40,679 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 05:18:40,679 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 05:18:40,685 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 05:18:40,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 05:18:40,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 05:18:40,706 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 3 states. [2018-11-07 05:18:42,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 05:18:42,974 INFO L93 Difference]: Finished difference Result 838 states and 1479 transitions. [2018-11-07 05:18:42,981 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 05:18:42,982 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 159 [2018-11-07 05:18:42,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 05:18:43,006 INFO L225 Difference]: With dead ends: 838 [2018-11-07 05:18:43,006 INFO L226 Difference]: Without dead ends: 524 [2018-11-07 05:18:43,014 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 05:18:43,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2018-11-07 05:18:43,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 522. [2018-11-07 05:18:43,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 522 states. [2018-11-07 05:18:43,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 890 transitions. [2018-11-07 05:18:43,107 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 890 transitions. Word has length 159 [2018-11-07 05:18:43,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 05:18:43,108 INFO L480 AbstractCegarLoop]: Abstraction has 522 states and 890 transitions. [2018-11-07 05:18:43,109 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 05:18:43,109 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 890 transitions. [2018-11-07 05:18:43,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2018-11-07 05:18:43,122 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 05:18:43,126 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 05:18:43,127 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 05:18:43,127 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 05:18:43,127 INFO L82 PathProgramCache]: Analyzing trace with hash -1120639275, now seen corresponding path program 1 times [2018-11-07 05:18:43,128 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 05:18:43,130 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 05:18:43,130 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 05:18:43,131 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 05:18:43,131 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 05:18:43,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 05:18:43,674 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 05:18:43,674 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 05:18:43,675 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 05:18:43,675 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 05:18:43,677 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 05:18:43,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 05:18:43,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 05:18:43,678 INFO L87 Difference]: Start difference. First operand 522 states and 890 transitions. Second operand 6 states. [2018-11-07 05:18:47,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 05:18:47,327 INFO L93 Difference]: Finished difference Result 1581 states and 2759 transitions. [2018-11-07 05:18:47,330 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-07 05:18:47,330 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 169 [2018-11-07 05:18:47,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 05:18:47,340 INFO L225 Difference]: With dead ends: 1581 [2018-11-07 05:18:47,341 INFO L226 Difference]: Without dead ends: 1065 [2018-11-07 05:18:47,344 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 05:18:47,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1065 states. [2018-11-07 05:18:47,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1065 to 1023. [2018-11-07 05:18:47,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1023 states. [2018-11-07 05:18:47,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1023 states to 1023 states and 1733 transitions. [2018-11-07 05:18:47,422 INFO L78 Accepts]: Start accepts. Automaton has 1023 states and 1733 transitions. Word has length 169 [2018-11-07 05:18:47,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 05:18:47,422 INFO L480 AbstractCegarLoop]: Abstraction has 1023 states and 1733 transitions. [2018-11-07 05:18:47,422 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 05:18:47,423 INFO L276 IsEmpty]: Start isEmpty. Operand 1023 states and 1733 transitions. [2018-11-07 05:18:47,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2018-11-07 05:18:47,427 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 05:18:47,428 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] [2018-11-07 05:18:47,428 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 05:18:47,428 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 05:18:47,429 INFO L82 PathProgramCache]: Analyzing trace with hash -362863336, now seen corresponding path program 1 times [2018-11-07 05:18:47,429 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 05:18:47,430 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 05:18:47,430 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 05:18:47,430 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 05:18:47,430 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 05:18:47,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 05:18:47,723 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 05:18:47,724 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 05:18:47,724 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 05:18:47,724 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 05:18:47,725 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 05:18:47,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 05:18:47,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 05:18:47,725 INFO L87 Difference]: Start difference. First operand 1023 states and 1733 transitions. Second operand 3 states. [2018-11-07 05:18:52,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 05:18:52,585 INFO L93 Difference]: Finished difference Result 2887 states and 5063 transitions. [2018-11-07 05:18:52,587 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 05:18:52,587 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 172 [2018-11-07 05:18:52,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 05:18:52,609 INFO L225 Difference]: With dead ends: 2887 [2018-11-07 05:18:52,609 INFO L226 Difference]: Without dead ends: 1870 [2018-11-07 05:18:52,615 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 05:18:52,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1870 states. [2018-11-07 05:18:52,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1870 to 1865. [2018-11-07 05:18:52,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1865 states. [2018-11-07 05:18:52,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1865 states to 1865 states and 3055 transitions. [2018-11-07 05:18:52,691 INFO L78 Accepts]: Start accepts. Automaton has 1865 states and 3055 transitions. Word has length 172 [2018-11-07 05:18:52,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 05:18:52,693 INFO L480 AbstractCegarLoop]: Abstraction has 1865 states and 3055 transitions. [2018-11-07 05:18:52,693 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 05:18:52,693 INFO L276 IsEmpty]: Start isEmpty. Operand 1865 states and 3055 transitions. [2018-11-07 05:18:52,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-11-07 05:18:52,702 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 05:18:52,703 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:18:52,703 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 05:18:52,703 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 05:18:52,704 INFO L82 PathProgramCache]: Analyzing trace with hash 1612799655, now seen corresponding path program 1 times [2018-11-07 05:18:52,704 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 05:18:52,705 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 05:18:52,706 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 05:18:52,706 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 05:18:52,706 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 05:18:52,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 05:18:53,047 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 05:18:53,047 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 05:18:53,047 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 05:18:53,047 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 05:18:53,048 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 05:18:53,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 05:18:53,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 05:18:53,049 INFO L87 Difference]: Start difference. First operand 1865 states and 3055 transitions. Second operand 3 states. [2018-11-07 05:18:54,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 05:18:54,415 INFO L93 Difference]: Finished difference Result 5412 states and 9175 transitions. [2018-11-07 05:18:54,419 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 05:18:54,419 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 192 [2018-11-07 05:18:54,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 05:18:54,450 INFO L225 Difference]: With dead ends: 5412 [2018-11-07 05:18:54,451 INFO L226 Difference]: Without dead ends: 3553 [2018-11-07 05:18:54,462 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 05:18:54,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3553 states. [2018-11-07 05:18:54,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3553 to 3551. [2018-11-07 05:18:54,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3551 states. [2018-11-07 05:18:54,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3551 states to 3551 states and 5637 transitions. [2018-11-07 05:18:54,591 INFO L78 Accepts]: Start accepts. Automaton has 3551 states and 5637 transitions. Word has length 192 [2018-11-07 05:18:54,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 05:18:54,592 INFO L480 AbstractCegarLoop]: Abstraction has 3551 states and 5637 transitions. [2018-11-07 05:18:54,592 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 05:18:54,592 INFO L276 IsEmpty]: Start isEmpty. Operand 3551 states and 5637 transitions. [2018-11-07 05:18:54,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2018-11-07 05:18:54,606 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 05:18:54,606 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:18:54,607 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 05:18:54,607 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 05:18:54,607 INFO L82 PathProgramCache]: Analyzing trace with hash -35084211, now seen corresponding path program 1 times [2018-11-07 05:18:54,607 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 05:18:54,608 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 05:18:54,608 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 05:18:54,608 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 05:18:54,609 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 05:18:54,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 05:18:54,917 WARN L179 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 05:18:54,968 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 05:18:54,968 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 05:18:54,969 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 05:18:54,969 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 05:18:54,969 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 05:18:54,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 05:18:54,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 05:18:54,970 INFO L87 Difference]: Start difference. First operand 3551 states and 5637 transitions. Second operand 6 states. [2018-11-07 05:18:57,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 05:18:57,150 INFO L93 Difference]: Finished difference Result 8962 states and 15042 transitions. [2018-11-07 05:18:57,154 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 05:18:57,154 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 197 [2018-11-07 05:18:57,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 05:18:57,195 INFO L225 Difference]: With dead ends: 8962 [2018-11-07 05:18:57,196 INFO L226 Difference]: Without dead ends: 5417 [2018-11-07 05:18:57,212 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 05:18:57,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5417 states. [2018-11-07 05:18:57,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5417 to 5329. [2018-11-07 05:18:57,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5329 states. [2018-11-07 05:18:57,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5329 states to 5329 states and 7602 transitions. [2018-11-07 05:18:57,386 INFO L78 Accepts]: Start accepts. Automaton has 5329 states and 7602 transitions. Word has length 197 [2018-11-07 05:18:57,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 05:18:57,387 INFO L480 AbstractCegarLoop]: Abstraction has 5329 states and 7602 transitions. [2018-11-07 05:18:57,387 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 05:18:57,387 INFO L276 IsEmpty]: Start isEmpty. Operand 5329 states and 7602 transitions. [2018-11-07 05:18:57,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2018-11-07 05:18:57,406 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 05:18:57,406 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, 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] [2018-11-07 05:18:57,406 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 05:18:57,406 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 05:18:57,407 INFO L82 PathProgramCache]: Analyzing trace with hash -1506539486, now seen corresponding path program 1 times [2018-11-07 05:18:57,407 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 05:18:57,408 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 05:18:57,408 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 05:18:57,408 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 05:18:57,408 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 05:18:57,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 05:18:57,646 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 05:18:57,647 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 05:18:57,647 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 05:18:57,647 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 05:18:57,647 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 05:18:57,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 05:18:57,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 05:18:57,648 INFO L87 Difference]: Start difference. First operand 5329 states and 7602 transitions. Second operand 6 states. [2018-11-07 05:18:59,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 05:18:59,404 INFO L93 Difference]: Finished difference Result 11197 states and 16329 transitions. [2018-11-07 05:18:59,409 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 05:18:59,409 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 218 [2018-11-07 05:18:59,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 05:18:59,440 INFO L225 Difference]: With dead ends: 11197 [2018-11-07 05:18:59,440 INFO L226 Difference]: Without dead ends: 5874 [2018-11-07 05:18:59,463 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 05:18:59,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5874 states. [2018-11-07 05:18:59,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5874 to 5601. [2018-11-07 05:18:59,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5601 states. [2018-11-07 05:18:59,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5601 states to 5601 states and 7541 transitions. [2018-11-07 05:18:59,632 INFO L78 Accepts]: Start accepts. Automaton has 5601 states and 7541 transitions. Word has length 218 [2018-11-07 05:18:59,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 05:18:59,633 INFO L480 AbstractCegarLoop]: Abstraction has 5601 states and 7541 transitions. [2018-11-07 05:18:59,633 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 05:18:59,633 INFO L276 IsEmpty]: Start isEmpty. Operand 5601 states and 7541 transitions. [2018-11-07 05:18:59,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2018-11-07 05:18:59,651 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 05:18:59,652 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 05:18:59,652 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 05:18:59,652 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 05:18:59,652 INFO L82 PathProgramCache]: Analyzing trace with hash -693136218, now seen corresponding path program 1 times [2018-11-07 05:18:59,652 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 05:18:59,656 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 05:18:59,657 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 05:18:59,657 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 05:18:59,658 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 05:18:59,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 05:19:00,117 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 77 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 05:19:00,118 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 05:19:00,118 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 05:19:00,119 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 232 with the following transitions: [2018-11-07 05:19:00,121 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [28], [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], [240], [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], [733], [735], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 05:19:00,200 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 05:19:00,201 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 05:19:01,397 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 05:19:01,399 INFO L272 AbstractInterpreter]: Visited 160 different actions 160 times. Never merged. Never widened. Never found a fixpoint. Largest state had 88 variables. [2018-11-07 05:19:01,458 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 05:19:01,459 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 05:19:02,600 INFO L227 lantSequenceWeakener]: Weakened 222 states. On average, predicates are now at 70.41% of their original sizes. [2018-11-07 05:19:02,600 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 05:19:03,098 INFO L415 sIntCurrentIteration]: We unified 230 AI predicates to 230 [2018-11-07 05:19:03,098 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 05:19:03,099 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 05:19:03,099 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [6] total 17 [2018-11-07 05:19:03,102 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 05:19:03,102 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-07 05:19:03,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-07 05:19:03,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2018-11-07 05:19:03,103 INFO L87 Difference]: Start difference. First operand 5601 states and 7541 transitions. Second operand 13 states. [2018-11-07 05:19:11,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 05:19:11,320 INFO L93 Difference]: Finished difference Result 11406 states and 15355 transitions. [2018-11-07 05:19:11,320 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-07 05:19:11,321 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 231 [2018-11-07 05:19:11,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 05:19:11,345 INFO L225 Difference]: With dead ends: 11406 [2018-11-07 05:19:11,345 INFO L226 Difference]: Without dead ends: 5811 [2018-11-07 05:19:11,360 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 231 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2018-11-07 05:19:11,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5811 states. [2018-11-07 05:19:11,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5811 to 5809. [2018-11-07 05:19:11,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5809 states. [2018-11-07 05:19:11,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5809 states to 5809 states and 7758 transitions. [2018-11-07 05:19:11,507 INFO L78 Accepts]: Start accepts. Automaton has 5809 states and 7758 transitions. Word has length 231 [2018-11-07 05:19:11,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 05:19:11,507 INFO L480 AbstractCegarLoop]: Abstraction has 5809 states and 7758 transitions. [2018-11-07 05:19:11,508 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-07 05:19:11,508 INFO L276 IsEmpty]: Start isEmpty. Operand 5809 states and 7758 transitions. [2018-11-07 05:19:11,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2018-11-07 05:19:11,526 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 05:19:11,527 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 05:19:11,527 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 05:19:11,527 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 05:19:11,528 INFO L82 PathProgramCache]: Analyzing trace with hash -1743759759, now seen corresponding path program 1 times [2018-11-07 05:19:11,528 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 05:19:11,528 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 05:19:11,529 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 05:19:11,529 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 05:19:11,529 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 05:19:11,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 05:19:12,156 WARN L179 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-11-07 05:19:12,266 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 95 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 05:19:12,266 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 05:19:12,266 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 05:19:12,266 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 241 with the following transitions: [2018-11-07 05:19:12,267 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [64], [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], [240], [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], [733], [735], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 05:19:12,277 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 05:19:12,277 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 05:19:13,143 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 05:19:13,143 INFO L272 AbstractInterpreter]: Visited 164 different actions 326 times. Merged at 7 different actions 10 times. Never widened. Found 2 fixpoints after 2 different actions. Largest state had 88 variables. [2018-11-07 05:19:13,151 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 05:19:13,152 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 05:19:13,152 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 05:19:13,152 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 05:19:13,162 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 05:19:13,162 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 05:19:13,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 05:19:13,360 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 05:19:13,635 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 38 proven. 54 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 05:19:13,635 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 05:19:14,064 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 90 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 05:19:14,097 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 05:19:14,098 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 9 [2018-11-07 05:19:14,098 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 05:19:14,099 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-07 05:19:14,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-07 05:19:14,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-11-07 05:19:14,099 INFO L87 Difference]: Start difference. First operand 5809 states and 7758 transitions. Second operand 8 states. [2018-11-07 05:19:22,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 05:19:22,624 INFO L93 Difference]: Finished difference Result 28348 states and 42887 transitions. [2018-11-07 05:19:22,624 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-11-07 05:19:22,625 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 240 [2018-11-07 05:19:22,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 05:19:22,729 INFO L225 Difference]: With dead ends: 28348 [2018-11-07 05:19:22,729 INFO L226 Difference]: Without dead ends: 22753 [2018-11-07 05:19:22,784 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 526 GetRequests, 493 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 307 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=278, Invalid=912, Unknown=0, NotChecked=0, Total=1190 [2018-11-07 05:19:22,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22753 states. [2018-11-07 05:19:23,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22753 to 22213. [2018-11-07 05:19:23,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22213 states. [2018-11-07 05:19:23,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22213 states to 22213 states and 27770 transitions. [2018-11-07 05:19:23,595 INFO L78 Accepts]: Start accepts. Automaton has 22213 states and 27770 transitions. Word has length 240 [2018-11-07 05:19:23,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 05:19:23,596 INFO L480 AbstractCegarLoop]: Abstraction has 22213 states and 27770 transitions. [2018-11-07 05:19:23,596 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-07 05:19:23,596 INFO L276 IsEmpty]: Start isEmpty. Operand 22213 states and 27770 transitions. [2018-11-07 05:19:23,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2018-11-07 05:19:23,647 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 05:19:23,647 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 05:19:23,647 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 05:19:23,648 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 05:19:23,648 INFO L82 PathProgramCache]: Analyzing trace with hash -556279620, now seen corresponding path program 1 times [2018-11-07 05:19:23,648 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 05:19:23,649 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 05:19:23,649 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 05:19:23,649 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 05:19:23,649 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 05:19:23,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 05:19:24,149 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 95 proven. 17 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-11-07 05:19:24,150 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 05:19:24,150 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 05:19:24,150 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 249 with the following transitions: [2018-11-07 05:19:24,151 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [24], [25], [29], [33], [37], [41], [45], [48], [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], [240], [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], [733], [735], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 05:19:24,167 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 05:19:24,168 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 05:19:25,012 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 05:19:25,012 INFO L272 AbstractInterpreter]: Visited 164 different actions 322 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-11-07 05:19:25,046 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 05:19:25,046 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 05:19:25,879 INFO L227 lantSequenceWeakener]: Weakened 245 states. On average, predicates are now at 70.9% of their original sizes. [2018-11-07 05:19:25,880 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 05:19:27,932 INFO L415 sIntCurrentIteration]: We unified 247 AI predicates to 247 [2018-11-07 05:19:27,933 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 05:19:27,933 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 05:19:27,934 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [21] imperfect sequences [6] total 25 [2018-11-07 05:19:27,934 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 05:19:27,935 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-11-07 05:19:27,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-11-07 05:19:27,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=339, Unknown=0, NotChecked=0, Total=420 [2018-11-07 05:19:27,936 INFO L87 Difference]: Start difference. First operand 22213 states and 27770 transitions. Second operand 21 states. [2018-11-07 05:19:41,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 05:19:41,073 INFO L93 Difference]: Finished difference Result 43993 states and 55116 transitions. [2018-11-07 05:19:41,073 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-07 05:19:41,073 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 248 [2018-11-07 05:19:41,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 05:19:41,132 INFO L225 Difference]: With dead ends: 43993 [2018-11-07 05:19:41,132 INFO L226 Difference]: Without dead ends: 22427 [2018-11-07 05:19:41,166 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 256 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=187, Invalid=683, Unknown=0, NotChecked=0, Total=870 [2018-11-07 05:19:41,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22427 states. [2018-11-07 05:19:41,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22427 to 22424. [2018-11-07 05:19:41,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22424 states. [2018-11-07 05:19:41,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22424 states to 22424 states and 28000 transitions. [2018-11-07 05:19:41,609 INFO L78 Accepts]: Start accepts. Automaton has 22424 states and 28000 transitions. Word has length 248 [2018-11-07 05:19:41,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 05:19:41,609 INFO L480 AbstractCegarLoop]: Abstraction has 22424 states and 28000 transitions. [2018-11-07 05:19:41,609 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-11-07 05:19:41,609 INFO L276 IsEmpty]: Start isEmpty. Operand 22424 states and 28000 transitions. [2018-11-07 05:19:41,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2018-11-07 05:19:41,666 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 05:19:41,667 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 05:19:41,667 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 05:19:41,667 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 05:19:41,667 INFO L82 PathProgramCache]: Analyzing trace with hash -1198983913, now seen corresponding path program 1 times [2018-11-07 05:19:41,668 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 05:19:41,668 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 05:19:41,668 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 05:19:41,669 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 05:19:41,669 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 05:19:41,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 05:19:42,231 WARN L179 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-11-07 05:19:42,428 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 142 proven. 14 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-11-07 05:19:42,428 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 05:19:42,429 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 05:19:42,429 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 295 with the following transitions: [2018-11-07 05:19:42,429 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [36], [37], [41], [45], [49], [53], [57], [61], [64], [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], [409], [412], [416], [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], [733], [735], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 05:19:42,441 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 05:19:42,441 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 05:19:43,050 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 05:19:43,050 INFO L272 AbstractInterpreter]: Visited 165 different actions 322 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-11-07 05:19:43,059 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 05:19:43,059 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 05:19:43,059 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 05:19:43,059 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 05:19:43,068 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 05:19:43,068 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 05:19:43,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 05:19:43,275 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 05:19:43,423 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 162 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-11-07 05:19:43,423 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 05:19:43,688 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 162 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-11-07 05:19:43,721 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 05:19:43,722 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2018-11-07 05:19:43,722 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 05:19:43,722 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-07 05:19:43,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-07 05:19:43,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2018-11-07 05:19:43,723 INFO L87 Difference]: Start difference. First operand 22424 states and 28000 transitions. Second operand 9 states. [2018-11-07 05:19:51,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 05:19:51,581 INFO L93 Difference]: Finished difference Result 62328 states and 80009 transitions. [2018-11-07 05:19:51,581 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-11-07 05:19:51,581 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 294 [2018-11-07 05:19:51,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 05:19:51,703 INFO L225 Difference]: With dead ends: 62328 [2018-11-07 05:19:51,704 INFO L226 Difference]: Without dead ends: 40548 [2018-11-07 05:19:51,766 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 681 GetRequests, 626 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1000 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=605, Invalid=2365, Unknown=0, NotChecked=0, Total=2970 [2018-11-07 05:19:51,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40548 states. [2018-11-07 05:19:52,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40548 to 40152. [2018-11-07 05:19:52,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40152 states. [2018-11-07 05:19:52,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40152 states to 40152 states and 46751 transitions. [2018-11-07 05:19:52,495 INFO L78 Accepts]: Start accepts. Automaton has 40152 states and 46751 transitions. Word has length 294 [2018-11-07 05:19:52,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 05:19:52,495 INFO L480 AbstractCegarLoop]: Abstraction has 40152 states and 46751 transitions. [2018-11-07 05:19:52,495 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-07 05:19:52,495 INFO L276 IsEmpty]: Start isEmpty. Operand 40152 states and 46751 transitions. [2018-11-07 05:19:52,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2018-11-07 05:19:52,535 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 05:19:52,536 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 05:19:52,536 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 05:19:52,536 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 05:19:52,536 INFO L82 PathProgramCache]: Analyzing trace with hash 1448489725, now seen corresponding path program 1 times [2018-11-07 05:19:52,536 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 05:19:52,537 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 05:19:52,537 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 05:19:52,537 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 05:19:52,538 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 05:19:52,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 05:19:53,178 WARN L179 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-11-07 05:19:53,359 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 201 proven. 70 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2018-11-07 05:19:53,359 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 05:19:53,359 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 05:19:53,359 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 329 with the following transitions: [2018-11-07 05:19:53,360 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [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], [123], [124], [127], [128], [132], [136], [139], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [240], [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], [733], [735], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 05:19:53,365 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 05:19:53,365 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 05:19:54,219 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 05:19:54,219 INFO L272 AbstractInterpreter]: Visited 166 different actions 504 times. Merged at 9 different actions 29 times. Never widened. Found 7 fixpoints after 3 different actions. Largest state had 88 variables. [2018-11-07 05:19:54,256 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 05:19:54,256 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 05:19:54,257 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 05:19:54,257 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 05:19:54,272 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 05:19:54,272 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 05:19:54,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 05:19:54,566 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 05:19:54,873 WARN L179 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-11-07 05:19:55,002 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 266 proven. 2 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2018-11-07 05:19:55,003 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 05:19:55,388 WARN L179 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2018-11-07 05:19:55,709 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 201 proven. 70 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2018-11-07 05:19:55,730 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 05:19:55,730 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 8 [2018-11-07 05:19:55,730 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 05:19:55,731 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 05:19:55,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 05:19:55,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2018-11-07 05:19:55,731 INFO L87 Difference]: Start difference. First operand 40152 states and 46751 transitions. Second operand 7 states. [2018-11-07 05:19:59,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 05:19:59,226 INFO L93 Difference]: Finished difference Result 91840 states and 108717 transitions. [2018-11-07 05:19:59,226 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-07 05:19:59,226 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 328 [2018-11-07 05:19:59,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 05:19:59,392 INFO L225 Difference]: With dead ends: 91840 [2018-11-07 05:19:59,392 INFO L226 Difference]: Without dead ends: 56286 [2018-11-07 05:19:59,463 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 669 GetRequests, 656 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2018-11-07 05:19:59,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56286 states. [2018-11-07 05:20:00,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56286 to 55301. [2018-11-07 05:20:00,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55301 states. [2018-11-07 05:20:00,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55301 states to 55301 states and 63705 transitions. [2018-11-07 05:20:00,451 INFO L78 Accepts]: Start accepts. Automaton has 55301 states and 63705 transitions. Word has length 328 [2018-11-07 05:20:00,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 05:20:00,452 INFO L480 AbstractCegarLoop]: Abstraction has 55301 states and 63705 transitions. [2018-11-07 05:20:00,452 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 05:20:00,452 INFO L276 IsEmpty]: Start isEmpty. Operand 55301 states and 63705 transitions. [2018-11-07 05:20:00,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2018-11-07 05:20:00,506 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 05:20:00,506 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:20:00,506 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 05:20:00,506 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 05:20:00,507 INFO L82 PathProgramCache]: Analyzing trace with hash 1949708440, now seen corresponding path program 1 times [2018-11-07 05:20:00,507 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 05:20:00,508 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 05:20:00,508 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 05:20:00,508 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 05:20:00,508 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 05:20:00,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 05:20:00,924 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 217 proven. 90 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2018-11-07 05:20:00,924 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 05:20:00,924 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 05:20:00,924 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 359 with the following transitions: [2018-11-07 05:20:00,925 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [64], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [123], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [240], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [350], [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], [733], [735], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 05:20:00,931 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 05:20:00,931 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 05:20:02,326 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 05:20:02,326 INFO L272 AbstractInterpreter]: Visited 166 different actions 664 times. Merged at 9 different actions 34 times. Never widened. Found 10 fixpoints after 2 different actions. Largest state had 88 variables. [2018-11-07 05:20:02,336 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 05:20:02,336 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 05:20:02,336 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 05:20:02,336 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 05:20:02,349 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 05:20:02,349 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 05:20:02,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 05:20:02,598 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 05:20:03,162 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 304 proven. 2 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2018-11-07 05:20:03,163 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 05:20:03,918 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 255 proven. 34 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2018-11-07 05:20:03,938 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 05:20:03,939 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2018-11-07 05:20:03,939 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 05:20:03,940 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-07 05:20:03,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-07 05:20:03,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2018-11-07 05:20:03,940 INFO L87 Difference]: Start difference. First operand 55301 states and 63705 transitions. Second operand 9 states. [2018-11-07 05:20:10,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 05:20:10,388 INFO L93 Difference]: Finished difference Result 115316 states and 141821 transitions. [2018-11-07 05:20:10,388 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-11-07 05:20:10,388 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 358 [2018-11-07 05:20:10,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 05:20:10,580 INFO L225 Difference]: With dead ends: 115316 [2018-11-07 05:20:10,580 INFO L226 Difference]: Without dead ends: 55137 [2018-11-07 05:20:10,719 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 801 GetRequests, 751 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 733 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=518, Invalid=1932, Unknown=0, NotChecked=0, Total=2450 [2018-11-07 05:20:10,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55137 states. [2018-11-07 05:20:12,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55137 to 51725. [2018-11-07 05:20:12,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51725 states. [2018-11-07 05:20:12,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51725 states to 51725 states and 56687 transitions. [2018-11-07 05:20:12,092 INFO L78 Accepts]: Start accepts. Automaton has 51725 states and 56687 transitions. Word has length 358 [2018-11-07 05:20:12,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 05:20:12,092 INFO L480 AbstractCegarLoop]: Abstraction has 51725 states and 56687 transitions. [2018-11-07 05:20:12,092 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-07 05:20:12,092 INFO L276 IsEmpty]: Start isEmpty. Operand 51725 states and 56687 transitions. [2018-11-07 05:20:12,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2018-11-07 05:20:12,120 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 05:20:12,120 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 05:20:12,120 INFO L423 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 05:20:12,120 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 05:20:12,121 INFO L82 PathProgramCache]: Analyzing trace with hash -1002685930, now seen corresponding path program 1 times [2018-11-07 05:20:12,121 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 05:20:12,121 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 05:20:12,122 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 05:20:12,122 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 05:20:12,122 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 05:20:12,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 05:20:12,587 INFO L134 CoverageAnalysis]: Checked inductivity of 384 backedges. 227 proven. 32 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2018-11-07 05:20:12,587 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 05:20:12,587 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 05:20:12,587 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 373 with the following transitions: [2018-11-07 05:20:12,588 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [45], [48], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [123], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [240], [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], [436], [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], [733], [735], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 05:20:12,592 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 05:20:12,593 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 05:20:13,343 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 05:20:13,343 INFO L272 AbstractInterpreter]: Visited 166 different actions 491 times. Merged at 7 different actions 17 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 88 variables. [2018-11-07 05:20:13,350 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 05:20:13,350 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 05:20:13,350 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 05:20:13,350 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 05:20:13,360 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 05:20:13,361 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 05:20:13,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 05:20:13,609 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 05:20:13,756 INFO L134 CoverageAnalysis]: Checked inductivity of 384 backedges. 332 proven. 4 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2018-11-07 05:20:13,757 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 05:20:13,969 INFO L134 CoverageAnalysis]: Checked inductivity of 384 backedges. 332 proven. 4 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2018-11-07 05:20:13,990 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 05:20:13,990 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2018-11-07 05:20:13,990 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 05:20:13,991 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-07 05:20:13,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-07 05:20:13,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-11-07 05:20:13,991 INFO L87 Difference]: Start difference. First operand 51725 states and 56687 transitions. Second operand 9 states. [2018-11-07 05:20:19,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 05:20:19,069 INFO L93 Difference]: Finished difference Result 177770 states and 197807 transitions. [2018-11-07 05:20:19,069 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-07 05:20:19,069 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 372 [2018-11-07 05:20:19,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 05:20:19,354 INFO L225 Difference]: With dead ends: 177770 [2018-11-07 05:20:19,355 INFO L226 Difference]: Without dead ends: 127326 [2018-11-07 05:20:19,420 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 760 GetRequests, 742 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2018-11-07 05:20:19,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127326 states. [2018-11-07 05:20:21,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127326 to 125936. [2018-11-07 05:20:21,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125936 states. [2018-11-07 05:20:21,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125936 states to 125936 states and 137692 transitions. [2018-11-07 05:20:21,762 INFO L78 Accepts]: Start accepts. Automaton has 125936 states and 137692 transitions. Word has length 372 [2018-11-07 05:20:21,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 05:20:21,763 INFO L480 AbstractCegarLoop]: Abstraction has 125936 states and 137692 transitions. [2018-11-07 05:20:21,763 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-07 05:20:21,763 INFO L276 IsEmpty]: Start isEmpty. Operand 125936 states and 137692 transitions. [2018-11-07 05:20:21,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2018-11-07 05:20:21,830 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 05:20:21,830 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 05:20:21,830 INFO L423 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 05:20:21,830 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 05:20:21,831 INFO L82 PathProgramCache]: Analyzing trace with hash -230384311, now seen corresponding path program 1 times [2018-11-07 05:20:21,831 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 05:20:21,832 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 05:20:21,832 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 05:20:21,832 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 05:20:21,832 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 05:20:21,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 05:20:22,543 WARN L179 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-11-07 05:20:22,908 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 255 proven. 70 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2018-11-07 05:20:22,908 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 05:20:22,908 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 05:20:22,908 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 383 with the following transitions: [2018-11-07 05:20:22,909 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [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], [123], [124], [127], [128], [132], [136], [139], [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], [491], [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], [733], [735], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 05:20:22,912 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 05:20:22,912 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 05:20:24,145 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 05:20:24,145 INFO L272 AbstractInterpreter]: Visited 166 different actions 499 times. Merged at 8 different actions 24 times. Never widened. Found 5 fixpoints after 3 different actions. Largest state had 88 variables. [2018-11-07 05:20:24,151 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 05:20:24,151 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 05:20:24,151 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 05:20:24,151 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 05:20:24,160 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 05:20:24,160 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 05:20:24,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 05:20:24,418 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 05:20:24,515 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 287 proven. 2 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2018-11-07 05:20:24,515 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 05:20:24,730 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 224 proven. 125 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-11-07 05:20:24,749 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 05:20:24,750 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2018-11-07 05:20:24,750 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 05:20:24,751 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 05:20:24,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 05:20:24,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2018-11-07 05:20:24,751 INFO L87 Difference]: Start difference. First operand 125936 states and 137692 transitions. Second operand 10 states. [2018-11-07 05:20:29,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 05:20:29,707 INFO L93 Difference]: Finished difference Result 274790 states and 308233 transitions. [2018-11-07 05:20:29,708 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-11-07 05:20:29,708 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 382 [2018-11-07 05:20:29,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 05:20:30,235 INFO L225 Difference]: With dead ends: 274790 [2018-11-07 05:20:30,235 INFO L226 Difference]: Without dead ends: 150137 [2018-11-07 05:20:30,422 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 792 GetRequests, 772 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=134, Invalid=328, Unknown=0, NotChecked=0, Total=462 [2018-11-07 05:20:30,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150137 states. [2018-11-07 05:20:33,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150137 to 145912. [2018-11-07 05:20:33,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145912 states. [2018-11-07 05:20:33,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145912 states to 145912 states and 160215 transitions. [2018-11-07 05:20:33,528 INFO L78 Accepts]: Start accepts. Automaton has 145912 states and 160215 transitions. Word has length 382 [2018-11-07 05:20:33,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 05:20:33,528 INFO L480 AbstractCegarLoop]: Abstraction has 145912 states and 160215 transitions. [2018-11-07 05:20:33,528 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-07 05:20:33,528 INFO L276 IsEmpty]: Start isEmpty. Operand 145912 states and 160215 transitions. [2018-11-07 05:20:33,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2018-11-07 05:20:33,581 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 05:20:33,581 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 05:20:33,581 INFO L423 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 05:20:33,581 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 05:20:33,581 INFO L82 PathProgramCache]: Analyzing trace with hash -932464016, now seen corresponding path program 1 times [2018-11-07 05:20:33,581 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 05:20:33,582 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 05:20:33,582 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 05:20:33,582 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 05:20:33,583 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 05:20:33,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 05:20:34,678 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 330 proven. 97 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2018-11-07 05:20:34,678 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 05:20:34,678 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 05:20:34,678 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 394 with the following transitions: [2018-11-07 05:20:34,679 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [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], [123], [124], [128], [132], [136], [139], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [240], [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], [436], [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], [733], [735], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 05:20:34,683 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 05:20:34,683 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 05:20:36,115 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 05:20:36,115 INFO L272 AbstractInterpreter]: Visited 166 different actions 499 times. Merged at 8 different actions 25 times. Never widened. Found 5 fixpoints after 2 different actions. Largest state had 88 variables. [2018-11-07 05:20:36,122 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 05:20:36,122 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 05:20:36,122 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 05:20:36,122 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 05:20:36,132 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 05:20:36,132 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 05:20:36,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 05:20:36,400 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 05:20:36,593 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 357 proven. 2 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2018-11-07 05:20:36,594 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 05:20:37,121 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 237 proven. 182 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2018-11-07 05:20:37,142 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 05:20:37,143 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 20 [2018-11-07 05:20:37,143 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 05:20:37,144 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-07 05:20:37,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-07 05:20:37,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2018-11-07 05:20:37,144 INFO L87 Difference]: Start difference. First operand 145912 states and 160215 transitions. Second operand 16 states. [2018-11-07 05:20:48,655 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 28 [2018-11-07 05:20:56,596 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-11-07 05:21:05,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 05:21:05,195 INFO L93 Difference]: Finished difference Result 494270 states and 582339 transitions. [2018-11-07 05:21:05,195 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 147 states. [2018-11-07 05:21:05,195 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 393 [2018-11-07 05:21:05,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 05:21:06,275 INFO L225 Difference]: With dead ends: 494270 [2018-11-07 05:21:06,275 INFO L226 Difference]: Without dead ends: 347362 [2018-11-07 05:21:06,535 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1070 GetRequests, 914 SyntacticMatches, 0 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10493 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=3820, Invalid=20986, Unknown=0, NotChecked=0, Total=24806 [2018-11-07 05:21:06,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347362 states. [2018-11-07 05:21:18,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347362 to 321235. [2018-11-07 05:21:18,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 321235 states. [2018-11-07 05:21:19,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321235 states to 321235 states and 351462 transitions. [2018-11-07 05:21:19,270 INFO L78 Accepts]: Start accepts. Automaton has 321235 states and 351462 transitions. Word has length 393 [2018-11-07 05:21:19,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 05:21:19,270 INFO L480 AbstractCegarLoop]: Abstraction has 321235 states and 351462 transitions. [2018-11-07 05:21:19,270 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-11-07 05:21:19,270 INFO L276 IsEmpty]: Start isEmpty. Operand 321235 states and 351462 transitions. [2018-11-07 05:21:19,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2018-11-07 05:21:19,344 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 05:21:19,344 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:21:19,344 INFO L423 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 05:21:19,344 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 05:21:19,345 INFO L82 PathProgramCache]: Analyzing trace with hash -544882633, now seen corresponding path program 1 times [2018-11-07 05:21:19,345 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 05:21:19,345 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 05:21:19,345 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 05:21:19,345 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 05:21:19,346 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 05:21:19,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 05:21:19,804 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 264 proven. 167 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2018-11-07 05:21:19,805 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 05:21:19,805 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 05:21:19,805 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 425 with the following transitions: [2018-11-07 05:21:19,805 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [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], [123], [124], [128], [132], [136], [139], [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], [315], [318], [322], [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], [436], [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], [733], [735], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 05:21:19,809 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 05:21:19,809 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 05:21:20,797 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 05:21:20,797 INFO L272 AbstractInterpreter]: Visited 169 different actions 673 times. Merged at 10 different actions 37 times. Never widened. Found 10 fixpoints after 4 different actions. Largest state had 88 variables. [2018-11-07 05:21:20,804 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 05:21:20,804 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 05:21:20,804 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 05:21:20,804 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 05:21:20,813 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 05:21:20,813 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 05:21:21,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 05:21:21,101 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 05:21:22,010 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 300 proven. 2 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2018-11-07 05:21:22,010 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 05:21:22,208 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-11-07 05:21:22,393 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 273 proven. 143 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2018-11-07 05:21:22,414 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 05:21:22,414 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 14 [2018-11-07 05:21:22,414 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 05:21:22,416 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-07 05:21:22,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-07 05:21:22,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2018-11-07 05:21:22,416 INFO L87 Difference]: Start difference. First operand 321235 states and 351462 transitions. Second operand 12 states. [2018-11-07 05:21:37,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 05:21:37,811 INFO L93 Difference]: Finished difference Result 783883 states and 883132 transitions. [2018-11-07 05:21:37,811 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-11-07 05:21:37,811 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 424 [2018-11-07 05:21:37,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 05:21:39,401 INFO L225 Difference]: With dead ends: 783883 [2018-11-07 05:21:39,402 INFO L226 Difference]: Without dead ends: 463284 [2018-11-07 05:21:39,734 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 913 GetRequests, 872 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 399 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=390, Invalid=1332, Unknown=0, NotChecked=0, Total=1722 [2018-11-07 05:21:40,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463284 states. [2018-11-07 05:21:49,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463284 to 457820. [2018-11-07 05:21:49,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 457820 states. [2018-11-07 05:21:50,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457820 states to 457820 states and 518979 transitions. [2018-11-07 05:21:50,859 INFO L78 Accepts]: Start accepts. Automaton has 457820 states and 518979 transitions. Word has length 424 [2018-11-07 05:21:50,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 05:21:50,860 INFO L480 AbstractCegarLoop]: Abstraction has 457820 states and 518979 transitions. [2018-11-07 05:21:50,860 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-07 05:21:50,860 INFO L276 IsEmpty]: Start isEmpty. Operand 457820 states and 518979 transitions. [2018-11-07 05:21:51,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 442 [2018-11-07 05:21:51,060 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 05:21:51,061 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:21:51,061 INFO L423 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 05:21:51,061 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 05:21:51,061 INFO L82 PathProgramCache]: Analyzing trace with hash -310986813, now seen corresponding path program 1 times [2018-11-07 05:21:51,061 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 05:21:51,062 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 05:21:51,062 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 05:21:51,062 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 05:21:51,062 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 05:21:51,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 05:21:51,723 INFO L134 CoverageAnalysis]: Checked inductivity of 640 backedges. 386 proven. 142 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2018-11-07 05:21:51,723 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 05:21:51,723 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 05:21:51,723 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 442 with the following transitions: [2018-11-07 05:21:51,723 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [99], [100], [104], [108], [112], [116], [120], [123], [124], [128], [132], [136], [139], [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], [315], [318], [322], [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], [436], [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], [733], [735], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 05:21:51,728 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 05:21:51,729 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 05:21:53,617 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 05:21:53,618 INFO L272 AbstractInterpreter]: Visited 167 different actions 509 times. Merged at 9 different actions 32 times. Widened at 1 different actions 1 times. Found 6 fixpoints after 3 different actions. Largest state had 88 variables. [2018-11-07 05:21:53,626 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 05:21:53,626 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 05:21:53,626 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 05:21:53,626 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 05:21:53,636 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 05:21:53,636 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 05:21:53,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 05:21:53,937 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 05:21:54,152 INFO L134 CoverageAnalysis]: Checked inductivity of 640 backedges. 502 proven. 6 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2018-11-07 05:21:54,153 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 05:21:54,528 INFO L134 CoverageAnalysis]: Checked inductivity of 640 backedges. 388 proven. 120 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2018-11-07 05:21:54,549 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 05:21:54,549 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2018-11-07 05:21:54,549 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 05:21:54,550 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 05:21:54,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 05:21:54,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2018-11-07 05:21:54,551 INFO L87 Difference]: Start difference. First operand 457820 states and 518979 transitions. Second operand 10 states. Received shutdown request... [2018-11-07 05:22:02,844 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-11-07 05:22:02,845 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 05:22:02,851 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 05:22:02,851 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 05:22:02 BoogieIcfgContainer [2018-11-07 05:22:02,852 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 05:22:02,853 INFO L168 Benchmark]: Toolchain (without parser) took 209537.79 ms. Allocated memory was 1.5 GB in the beginning and 5.5 GB in the end (delta: 4.0 GB). Free memory was 1.4 GB in the beginning and 4.5 GB in the end (delta: -3.1 GB). Peak memory consumption was 849.2 MB. Max. memory is 7.1 GB. [2018-11-07 05:22:02,854 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 05:22:02,854 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1127.46 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: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. [2018-11-07 05:22:02,855 INFO L168 Benchmark]: Boogie Procedure Inliner took 199.33 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 736.1 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -859.5 MB). Peak memory consumption was 38.8 MB. Max. memory is 7.1 GB. [2018-11-07 05:22:02,855 INFO L168 Benchmark]: Boogie Preprocessor took 143.38 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 05:22:02,856 INFO L168 Benchmark]: RCFGBuilder took 4553.96 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 260.9 MB). Peak memory consumption was 260.9 MB. Max. memory is 7.1 GB. [2018-11-07 05:22:02,862 INFO L168 Benchmark]: TraceAbstraction took 203508.58 ms. Allocated memory was 2.3 GB in the beginning and 5.5 GB in the end (delta: 3.2 GB). Free memory was 1.9 GB in the beginning and 4.5 GB in the end (delta: -2.6 GB). Peak memory consumption was 627.1 MB. Max. memory is 7.1 GB. [2018-11-07 05:22:02,867 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1127.46 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: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 199.33 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 736.1 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -859.5 MB). Peak memory consumption was 38.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 143.38 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 4553.96 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 260.9 MB). Peak memory consumption was 260.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 203508.58 ms. Allocated memory was 2.3 GB in the beginning and 5.5 GB in the end (delta: 3.2 GB). Free memory was 1.9 GB in the beginning and 4.5 GB in the end (delta: -2.6 GB). Peak memory consumption was 627.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 1491]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 1491). Cancelled while BasicCegarLoop was constructing difference of abstraction (457820states) and FLOYD_HOARE automaton (currently 18 states, 10 states before enhancement),while ReachableStatesComputation was computing reachable states (8120 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 312 locations, 1 error locations. TIMEOUT Result, 203.4s OverallTime, 17 OverallIterations, 6 TraceHistogramMax, 131.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3834 SDtfs, 37050 SDslu, 5066 SDs, 0 SdLazy, 45805 SolverSat, 9837 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 67.9s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 7659 GetRequests, 7178 SyntacticMatches, 18 SemanticMatches, 463 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13323 ImplicationChecksByTransitivity, 17.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=457820occurred in iteration=16, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 12.4s AbstIntTime, 11 AbstIntIterations, 2 AbstIntStrong, 0.9990141380642649 AbsIntWeakeningRatio, 0.26834381551362685 AbsIntAvgWeakeningVarsNumRemoved, 57.056603773584904 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 34.4s AutomataMinimizationTime, 16 MinimizatonAttempts, 42956 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.7s SsaConstructionTime, 2.5s SatisfiabilityAnalysisTime, 14.9s InterpolantComputationTime, 8050 NumberOfCodeBlocks, 8050 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 11247 ConstructedInterpolants, 0 QuantifiedInterpolants, 10341851 SizeOfPredicates, 50 NumberOfNonLiveVariables, 13140 ConjunctsInSsa, 92 ConjunctsInUnsatCore, 35 InterpolantComputations, 6 PerfectInterpolantSequences, 9372/10833 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown