java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label09_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 20:25:39,359 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 20:25:39,361 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 20:25:39,379 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 20:25:39,380 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 20:25:39,381 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 20:25:39,385 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 20:25:39,389 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 20:25:39,392 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 20:25:39,393 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 20:25:39,395 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 20:25:39,395 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 20:25:39,396 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 20:25:39,398 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 20:25:39,408 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 20:25:39,409 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 20:25:39,410 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 20:25:39,415 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 20:25:39,419 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 20:25:39,421 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 20:25:39,422 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 20:25:39,423 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 20:25:39,426 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 20:25:39,426 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 20:25:39,426 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 20:25:39,427 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 20:25:39,428 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 20:25:39,429 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 20:25:39,430 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 20:25:39,431 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 20:25:39,431 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 20:25:39,432 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 20:25:39,432 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 20:25:39,432 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 20:25:39,433 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 20:25:39,434 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 20:25:39,434 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf [2018-11-07 20:25:39,451 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 20:25:39,452 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 20:25:39,452 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 20:25:39,455 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 20:25:39,455 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 20:25:39,455 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 20:25:39,455 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-07 20:25:39,456 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 20:25:39,456 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 20:25:39,456 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 20:25:39,456 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 20:25:39,456 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 20:25:39,457 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 20:25:39,457 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 20:25:39,458 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 20:25:39,458 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 20:25:39,458 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 20:25:39,458 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 20:25:39,458 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 20:25:39,459 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 20:25:39,459 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 20:25:39,459 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 20:25:39,459 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 20:25:39,459 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 20:25:39,460 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 20:25:39,460 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 20:25:39,460 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 20:25:39,460 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 20:25:39,460 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 20:25:39,461 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 20:25:39,461 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 20:25:39,461 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 20:25:39,461 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 20:25:39,461 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 20:25:39,461 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 20:25:39,510 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 20:25:39,527 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 20:25:39,534 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 20:25:39,535 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 20:25:39,536 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 20:25:39,537 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label09_true-unreach-call.c [2018-11-07 20:25:39,610 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df849f775/0b477794c3134351b3b7d21dcb4efdad/FLAGfdcb5c057 [2018-11-07 20:25:40,380 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 20:25:40,381 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label09_true-unreach-call.c [2018-11-07 20:25:40,429 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df849f775/0b477794c3134351b3b7d21dcb4efdad/FLAGfdcb5c057 [2018-11-07 20:25:40,454 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df849f775/0b477794c3134351b3b7d21dcb4efdad [2018-11-07 20:25:40,466 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 20:25:40,468 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 20:25:40,470 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 20:25:40,470 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 20:25:40,474 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 20:25:40,476 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:25:40" (1/1) ... [2018-11-07 20:25:40,480 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b71c37f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:25:40, skipping insertion in model container [2018-11-07 20:25:40,480 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:25:40" (1/1) ... [2018-11-07 20:25:40,495 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 20:25:40,685 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 20:25:42,144 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 20:25:42,154 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 20:25:42,911 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 20:25:42,952 INFO L193 MainTranslator]: Completed translation [2018-11-07 20:25:42,953 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:25:42 WrapperNode [2018-11-07 20:25:42,953 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 20:25:42,954 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 20:25:42,954 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 20:25:42,956 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 20:25:42,967 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:25:42" (1/1) ... [2018-11-07 20:25:43,347 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:25:42" (1/1) ... [2018-11-07 20:25:43,358 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 20:25:43,358 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 20:25:43,358 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 20:25:43,358 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 20:25:43,370 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:25:42" (1/1) ... [2018-11-07 20:25:43,370 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:25:42" (1/1) ... [2018-11-07 20:25:43,397 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:25:42" (1/1) ... [2018-11-07 20:25:43,397 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:25:42" (1/1) ... [2018-11-07 20:25:43,499 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:25:42" (1/1) ... [2018-11-07 20:25:43,546 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:25:42" (1/1) ... [2018-11-07 20:25:43,581 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:25:42" (1/1) ... [2018-11-07 20:25:43,613 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 20:25:43,614 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 20:25:43,614 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 20:25:43,614 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 20:25:43,615 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:25:42" (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 20:25:43,689 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 20:25:43,690 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 20:25:43,690 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 20:25:43,690 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-07 20:25:43,690 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-07 20:25:43,691 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 20:25:43,691 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 20:25:43,691 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 20:25:43,691 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 20:25:43,691 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 20:25:43,692 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 20:25:43,692 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 20:25:43,692 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 20:25:43,693 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 20:25:43,693 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 20:25:54,975 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 20:25:54,976 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:25:54 BoogieIcfgContainer [2018-11-07 20:25:54,976 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 20:25:54,977 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 20:25:54,977 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 20:25:54,981 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 20:25:54,981 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 08:25:40" (1/3) ... [2018-11-07 20:25:54,982 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@579b6207 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:25:54, skipping insertion in model container [2018-11-07 20:25:54,982 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:25:42" (2/3) ... [2018-11-07 20:25:54,982 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@579b6207 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:25:54, skipping insertion in model container [2018-11-07 20:25:54,982 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:25:54" (3/3) ... [2018-11-07 20:25:54,984 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label09_true-unreach-call.c [2018-11-07 20:25:54,994 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 20:25:55,005 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 20:25:55,023 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 20:25:55,072 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 20:25:55,072 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 20:25:55,072 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 20:25:55,072 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 20:25:55,073 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 20:25:55,073 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 20:25:55,073 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 20:25:55,073 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 20:25:55,117 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-11-07 20:25:55,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-11-07 20:25:55,128 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:25:55,129 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] [2018-11-07 20:25:55,133 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:25:55,140 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:25:55,140 INFO L82 PathProgramCache]: Analyzing trace with hash 688094243, now seen corresponding path program 1 times [2018-11-07 20:25:55,143 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:25:55,194 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:25:55,194 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:25:55,194 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:25:55,194 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:25:55,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:25:55,736 WARN L179 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 20:25:55,898 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 20:25:55,901 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:25:55,902 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 20:25:55,902 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:25:55,908 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 20:25:55,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 20:25:55,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 20:25:55,930 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 3 states. [2018-11-07 20:26:04,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:26:04,104 INFO L93 Difference]: Finished difference Result 3097 states and 5707 transitions. [2018-11-07 20:26:04,110 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 20:26:04,111 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 67 [2018-11-07 20:26:04,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:26:04,159 INFO L225 Difference]: With dead ends: 3097 [2018-11-07 20:26:04,159 INFO L226 Difference]: Without dead ends: 1975 [2018-11-07 20:26:04,178 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 20:26:04,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1975 states. [2018-11-07 20:26:04,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1975 to 1974. [2018-11-07 20:26:04,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1974 states. [2018-11-07 20:26:04,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1974 states to 1974 states and 3284 transitions. [2018-11-07 20:26:04,354 INFO L78 Accepts]: Start accepts. Automaton has 1974 states and 3284 transitions. Word has length 67 [2018-11-07 20:26:04,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:26:04,355 INFO L480 AbstractCegarLoop]: Abstraction has 1974 states and 3284 transitions. [2018-11-07 20:26:04,355 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 20:26:04,356 INFO L276 IsEmpty]: Start isEmpty. Operand 1974 states and 3284 transitions. [2018-11-07 20:26:04,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-11-07 20:26:04,370 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:26:04,370 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, 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] [2018-11-07 20:26:04,371 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:26:04,371 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:26:04,371 INFO L82 PathProgramCache]: Analyzing trace with hash 758431250, now seen corresponding path program 1 times [2018-11-07 20:26:04,372 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:26:04,373 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:26:04,373 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:26:04,373 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:26:04,374 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:26:04,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:26:04,616 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:26:04,616 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:26:04,616 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 20:26:04,617 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:26:04,619 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 20:26:04,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 20:26:04,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 20:26:04,619 INFO L87 Difference]: Start difference. First operand 1974 states and 3284 transitions. Second operand 5 states. [2018-11-07 20:26:17,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:26:17,997 INFO L93 Difference]: Finished difference Result 5733 states and 9688 transitions. [2018-11-07 20:26:18,000 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 20:26:18,000 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 143 [2018-11-07 20:26:18,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:26:18,024 INFO L225 Difference]: With dead ends: 5733 [2018-11-07 20:26:18,024 INFO L226 Difference]: Without dead ends: 3765 [2018-11-07 20:26:18,032 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 20:26:18,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3765 states. [2018-11-07 20:26:18,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3765 to 3682. [2018-11-07 20:26:18,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3682 states. [2018-11-07 20:26:18,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3682 states to 3682 states and 5656 transitions. [2018-11-07 20:26:18,148 INFO L78 Accepts]: Start accepts. Automaton has 3682 states and 5656 transitions. Word has length 143 [2018-11-07 20:26:18,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:26:18,149 INFO L480 AbstractCegarLoop]: Abstraction has 3682 states and 5656 transitions. [2018-11-07 20:26:18,149 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 20:26:18,149 INFO L276 IsEmpty]: Start isEmpty. Operand 3682 states and 5656 transitions. [2018-11-07 20:26:18,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2018-11-07 20:26:18,155 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:26:18,155 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, 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] [2018-11-07 20:26:18,155 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:26:18,155 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:26:18,156 INFO L82 PathProgramCache]: Analyzing trace with hash 2052836206, now seen corresponding path program 1 times [2018-11-07 20:26:18,156 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:26:18,157 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:26:18,157 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:26:18,157 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:26:18,157 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:26:18,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:26:18,445 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:26:18,445 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:26:18,446 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 20:26:18,446 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:26:18,446 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 20:26:18,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 20:26:18,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 20:26:18,447 INFO L87 Difference]: Start difference. First operand 3682 states and 5656 transitions. Second operand 5 states. [2018-11-07 20:26:35,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:26:35,469 INFO L93 Difference]: Finished difference Result 13649 states and 21728 transitions. [2018-11-07 20:26:35,475 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 20:26:35,475 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 157 [2018-11-07 20:26:35,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:26:35,541 INFO L225 Difference]: With dead ends: 13649 [2018-11-07 20:26:35,541 INFO L226 Difference]: Without dead ends: 9973 [2018-11-07 20:26:35,566 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 20:26:35,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9973 states. [2018-11-07 20:26:35,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9973 to 9786. [2018-11-07 20:26:35,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9786 states. [2018-11-07 20:26:35,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9786 states to 9786 states and 14482 transitions. [2018-11-07 20:26:35,867 INFO L78 Accepts]: Start accepts. Automaton has 9786 states and 14482 transitions. Word has length 157 [2018-11-07 20:26:35,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:26:35,869 INFO L480 AbstractCegarLoop]: Abstraction has 9786 states and 14482 transitions. [2018-11-07 20:26:35,870 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 20:26:35,870 INFO L276 IsEmpty]: Start isEmpty. Operand 9786 states and 14482 transitions. [2018-11-07 20:26:35,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2018-11-07 20:26:35,876 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:26:35,881 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, 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] [2018-11-07 20:26:35,881 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:26:35,881 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:26:35,882 INFO L82 PathProgramCache]: Analyzing trace with hash -2003299502, now seen corresponding path program 1 times [2018-11-07 20:26:35,882 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:26:35,883 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:26:35,883 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:26:35,883 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:26:35,883 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:26:35,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:26:36,229 WARN L179 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 20:26:36,311 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:26:36,311 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:26:36,312 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 20:26:36,312 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:26:36,313 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 20:26:36,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 20:26:36,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 20:26:36,314 INFO L87 Difference]: Start difference. First operand 9786 states and 14482 transitions. Second operand 6 states. [2018-11-07 20:26:48,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:26:48,208 INFO L93 Difference]: Finished difference Result 34080 states and 53558 transitions. [2018-11-07 20:26:48,212 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 20:26:48,212 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 175 [2018-11-07 20:26:48,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:26:48,348 INFO L225 Difference]: With dead ends: 34080 [2018-11-07 20:26:48,349 INFO L226 Difference]: Without dead ends: 24300 [2018-11-07 20:26:48,421 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 20:26:48,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24300 states. [2018-11-07 20:26:48,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24300 to 24072. [2018-11-07 20:26:48,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24072 states. [2018-11-07 20:26:49,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24072 states to 24072 states and 33884 transitions. [2018-11-07 20:26:49,031 INFO L78 Accepts]: Start accepts. Automaton has 24072 states and 33884 transitions. Word has length 175 [2018-11-07 20:26:49,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:26:49,031 INFO L480 AbstractCegarLoop]: Abstraction has 24072 states and 33884 transitions. [2018-11-07 20:26:49,031 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 20:26:49,032 INFO L276 IsEmpty]: Start isEmpty. Operand 24072 states and 33884 transitions. [2018-11-07 20:26:49,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2018-11-07 20:26:49,056 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:26:49,057 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:26:49,057 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:26:49,057 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:26:49,058 INFO L82 PathProgramCache]: Analyzing trace with hash 1822344931, now seen corresponding path program 1 times [2018-11-07 20:26:49,058 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:26:49,059 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:26:49,059 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:26:49,059 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:26:49,059 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:26:49,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:26:49,308 WARN L179 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 20:26:49,722 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 120 proven. 70 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 20:26:49,722 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:26:49,723 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:26:49,724 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 282 with the following transitions: [2018-11-07 20:26:49,726 INFO L202 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2643], [2651], [2659], [2667], [2675], [2683], [2691], [2699], [2707], [2715], [2723], [2731], [2739], [2747], [2755], [2763], [2771], [2779], [2787], [2795], [2803], [2811], [2819], [2827], [2835], [2843], [2851], [2859], [2867], [2875], [2883], [2891], [2899], [2907], [2915], [2923], [2931], [2939], [2947], [2955], [2963], [2971], [2979], [2987], [2995], [3003], [3011], [3019], [3027], [3035], [3043], [3051], [3059], [3063], [3065], [3068], [3076], [3084], [3092], [3100], [3108], [3116], [3121], [3125], [3129], [3133], [3137], [3140], [3143], [3147], [3148], [3152], [3156], [3160], [3164], [3168], [3179], [3183], [3187], [3191], [3195], [3199], [3203], [3207], [3218], [3222], [3226], [3230], [3234], [3238], [3242], [3246], [3250], [3254], [3258], [3262], [3266], [3270], [3274], [3278], [3282], [3286], [3290], [3294], [3305], [3309], [3313], [3317], [3321], [3325], [3329], [3333], [3344], [3355], [3366], [3370], [3374], [3378], [3382], [3386], [3390], [3394], [3398], [3402], [3406], [3410], [3414], [3425], [3429], [3440], [3443], [3448], [3450], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-11-07 20:26:49,780 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:26:49,780 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:26:50,738 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:26:50,740 INFO L272 AbstractInterpreter]: Visited 140 different actions 140 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-11-07 20:26:50,793 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:26:50,793 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:26:51,764 INFO L227 lantSequenceWeakener]: Weakened 255 states. On average, predicates are now at 71.72% of their original sizes. [2018-11-07 20:26:51,765 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:26:52,268 INFO L415 sIntCurrentIteration]: We unified 280 AI predicates to 280 [2018-11-07 20:26:52,269 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:26:52,270 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:26:52,270 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [6] total 15 [2018-11-07 20:26:52,270 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:26:52,271 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-07 20:26:52,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-07 20:26:52,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-11-07 20:26:52,272 INFO L87 Difference]: Start difference. First operand 24072 states and 33884 transitions. Second operand 11 states. [2018-11-07 20:27:05,989 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:28:09,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:28:09,018 INFO L93 Difference]: Finished difference Result 48947 states and 68750 transitions. [2018-11-07 20:28:09,018 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-07 20:28:09,018 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 281 [2018-11-07 20:28:09,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:28:09,111 INFO L225 Difference]: With dead ends: 48947 [2018-11-07 20:28:09,111 INFO L226 Difference]: Without dead ends: 24881 [2018-11-07 20:28:09,152 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 285 GetRequests, 271 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2018-11-07 20:28:09,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24881 states. [2018-11-07 20:28:09,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24881 to 24876. [2018-11-07 20:28:09,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24876 states. [2018-11-07 20:28:09,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24876 states to 24876 states and 34699 transitions. [2018-11-07 20:28:09,713 INFO L78 Accepts]: Start accepts. Automaton has 24876 states and 34699 transitions. Word has length 281 [2018-11-07 20:28:09,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:28:09,713 INFO L480 AbstractCegarLoop]: Abstraction has 24876 states and 34699 transitions. [2018-11-07 20:28:09,714 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-07 20:28:09,714 INFO L276 IsEmpty]: Start isEmpty. Operand 24876 states and 34699 transitions. [2018-11-07 20:28:09,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2018-11-07 20:28:09,743 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:28:09,744 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 3, 3, 3, 3, 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] [2018-11-07 20:28:09,744 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:28:09,744 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:28:09,745 INFO L82 PathProgramCache]: Analyzing trace with hash 948070304, now seen corresponding path program 1 times [2018-11-07 20:28:09,745 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:28:09,746 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:28:09,746 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:28:09,747 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:28:09,747 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:28:09,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:28:10,073 WARN L179 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 20:28:11,391 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 186 proven. 203 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-11-07 20:28:11,391 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:28:11,391 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:28:11,392 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 364 with the following transitions: [2018-11-07 20:28:11,392 INFO L202 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2643], [2651], [2659], [2667], [2675], [2683], [2691], [2699], [2707], [2715], [2723], [2731], [2739], [2747], [2755], [2763], [2771], [2779], [2787], [2795], [2803], [2811], [2819], [2827], [2835], [2843], [2851], [2859], [2867], [2875], [2883], [2891], [2899], [2907], [2915], [2923], [2931], [2939], [2947], [2955], [2963], [2971], [2979], [2987], [2995], [3003], [3011], [3019], [3027], [3035], [3043], [3051], [3059], [3063], [3065], [3068], [3076], [3084], [3092], [3100], [3108], [3116], [3121], [3125], [3129], [3133], [3137], [3148], [3152], [3156], [3160], [3164], [3168], [3179], [3183], [3187], [3191], [3195], [3199], [3203], [3207], [3218], [3221], [3222], [3226], [3230], [3234], [3238], [3242], [3246], [3250], [3254], [3258], [3262], [3265], [3266], [3270], [3274], [3278], [3281], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-11-07 20:28:11,399 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:28:11,399 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:28:11,936 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:28:11,937 INFO L272 AbstractInterpreter]: Visited 114 different actions 329 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-07 20:28:11,973 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:28:11,974 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:28:12,841 INFO L227 lantSequenceWeakener]: Weakened 111 states. On average, predicates are now at 71.36% of their original sizes. [2018-11-07 20:28:12,842 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:28:14,799 INFO L415 sIntCurrentIteration]: We unified 362 AI predicates to 362 [2018-11-07 20:28:14,799 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:28:14,799 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:28:14,800 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [6] total 17 [2018-11-07 20:28:14,800 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:28:14,800 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-07 20:28:14,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-07 20:28:14,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2018-11-07 20:28:14,801 INFO L87 Difference]: Start difference. First operand 24876 states and 34699 transitions. Second operand 13 states. [2018-11-07 20:28:22,293 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-11-07 20:29:04,121 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-11-07 20:29:04,121 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 20:29:04,126 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 20:29:04,126 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 08:29:04 BoogieIcfgContainer [2018-11-07 20:29:04,127 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 20:29:04,127 INFO L168 Benchmark]: Toolchain (without parser) took 203660.54 ms. Allocated memory was 1.5 GB in the beginning and 5.8 GB in the end (delta: 4.3 GB). Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 382.9 MB). Peak memory consumption was 4.7 GB. Max. memory is 7.1 GB. [2018-11-07 20:29:04,129 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 20:29:04,130 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2484.03 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. [2018-11-07 20:29:04,131 INFO L168 Benchmark]: Boogie Procedure Inliner took 403.61 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 803.7 MB). Free memory was 1.1 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 67.6 MB. Max. memory is 7.1 GB. [2018-11-07 20:29:04,132 INFO L168 Benchmark]: Boogie Preprocessor took 255.34 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 36.8 MB). Peak memory consumption was 36.8 MB. Max. memory is 7.1 GB. [2018-11-07 20:29:04,133 INFO L168 Benchmark]: RCFGBuilder took 11362.33 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 158.9 MB). Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 39.2 MB). Peak memory consumption was 670.3 MB. Max. memory is 7.1 GB. [2018-11-07 20:29:04,134 INFO L168 Benchmark]: TraceAbstraction took 189149.62 ms. Allocated memory was 2.5 GB in the beginning and 5.8 GB in the end (delta: 3.4 GB). Free memory was 2.2 GB in the beginning and 1.0 GB in the end (delta: 1.2 GB). Peak memory consumption was 4.5 GB. Max. memory is 7.1 GB. [2018-11-07 20:29:04,139 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2484.03 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 403.61 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 803.7 MB). Free memory was 1.1 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 67.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 255.34 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 36.8 MB). Peak memory consumption was 36.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 11362.33 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 158.9 MB). Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 39.2 MB). Peak memory consumption was 670.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 189149.62 ms. Allocated memory was 2.5 GB in the beginning and 5.8 GB in the end (delta: 3.4 GB). Free memory was 2.2 GB in the beginning and 1.0 GB in the end (delta: 1.2 GB). Peak memory consumption was 4.5 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 192]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 192). Cancelled while BasicCegarLoop was constructing difference of abstraction (24876states) and FLOYD_HOARE automaton (currently 16 states, 13 states before enhancement),while ReachableStatesComputation was computing reachable states (25582 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 1120 locations, 1 error locations. TIMEOUT Result, 189.0s OverallTime, 6 OverallIterations, 4 TraceHistogramMax, 177.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 4001 SDtfs, 17849 SDslu, 3362 SDs, 0 SdLazy, 36049 SolverSat, 5901 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 88.6s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 686 GetRequests, 576 SyntacticMatches, 59 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 3.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24876occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 1.6s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9978987149019656 AbsIntWeakeningRatio, 0.09968847352024922 AbsIntAvgWeakeningVarsNumRemoved, 6.686915887850467 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.7s AutomataMinimizationTime, 5 MinimizatonAttempts, 504 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 1186 NumberOfCodeBlocks, 1186 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 1180 ConstructedInterpolants, 0 QuantifiedInterpolants, 714252 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 563/836 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown