java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label57_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 19:49:34,709 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 19:49:34,711 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 19:49:34,725 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 19:49:34,725 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 19:49:34,726 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 19:49:34,727 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 19:49:34,729 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 19:49:34,731 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 19:49:34,732 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 19:49:34,733 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 19:49:34,733 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 19:49:34,734 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 19:49:34,735 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 19:49:34,736 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 19:49:34,737 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 19:49:34,738 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 19:49:34,740 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 19:49:34,742 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 19:49:34,744 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 19:49:34,745 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 19:49:34,747 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 19:49:34,749 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 19:49:34,749 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 19:49:34,750 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 19:49:34,750 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 19:49:34,752 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 19:49:34,752 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 19:49:34,753 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 19:49:34,754 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 19:49:34,755 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 19:49:34,755 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-24 19:49:34,756 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 19:49:34,756 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 19:49:34,757 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 19:49:34,758 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 19:49:34,758 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-24 19:49:34,775 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 19:49:34,776 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 19:49:34,777 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 19:49:34,777 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 19:49:34,777 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 19:49:34,778 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 19:49:34,778 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 19:49:34,778 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 19:49:34,778 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 19:49:34,778 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 19:49:34,779 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 19:49:34,779 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 19:49:34,780 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 19:49:34,780 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 19:49:34,780 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 19:49:34,780 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 19:49:34,780 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 19:49:34,781 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 19:49:34,781 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 19:49:34,781 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 19:49:34,781 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 19:49:34,781 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 19:49:34,782 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 19:49:34,782 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 19:49:34,782 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 19:49:34,782 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 19:49:34,782 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 19:49:34,783 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 19:49:34,783 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 19:49:34,783 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 19:49:34,783 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 19:49:34,784 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 19:49:34,784 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 19:49:34,784 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 19:49:34,851 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 19:49:34,869 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 19:49:34,874 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 19:49:34,876 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 19:49:34,877 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 19:49:34,878 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label57_true-unreach-call.c [2018-10-24 19:49:34,954 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/135bd652f/5fcecab391504fe3961c9d7eb27ed3fd/FLAG81f9d6d9d [2018-10-24 19:49:35,766 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 19:49:35,767 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label57_true-unreach-call.c [2018-10-24 19:49:35,797 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/135bd652f/5fcecab391504fe3961c9d7eb27ed3fd/FLAG81f9d6d9d [2018-10-24 19:49:35,817 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/135bd652f/5fcecab391504fe3961c9d7eb27ed3fd [2018-10-24 19:49:35,832 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 19:49:35,834 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 19:49:35,837 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 19:49:35,837 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 19:49:35,845 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 19:49:35,846 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:49:35" (1/1) ... [2018-10-24 19:49:35,850 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3323d9c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:49:35, skipping insertion in model container [2018-10-24 19:49:35,851 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:49:35" (1/1) ... [2018-10-24 19:49:35,864 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 19:49:35,970 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 19:49:36,751 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 19:49:36,757 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 19:49:37,011 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 19:49:37,036 INFO L193 MainTranslator]: Completed translation [2018-10-24 19:49:37,037 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:49:37 WrapperNode [2018-10-24 19:49:37,038 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 19:49:37,039 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 19:49:37,039 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 19:49:37,039 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 19:49:37,051 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:49:37" (1/1) ... [2018-10-24 19:49:37,111 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:49:37" (1/1) ... [2018-10-24 19:49:37,425 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 19:49:37,426 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 19:49:37,426 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 19:49:37,426 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 19:49:37,439 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:49:37" (1/1) ... [2018-10-24 19:49:37,440 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:49:37" (1/1) ... [2018-10-24 19:49:37,460 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:49:37" (1/1) ... [2018-10-24 19:49:37,461 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:49:37" (1/1) ... [2018-10-24 19:49:37,544 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:49:37" (1/1) ... [2018-10-24 19:49:37,578 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:49:37" (1/1) ... [2018-10-24 19:49:37,590 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:49:37" (1/1) ... [2018-10-24 19:49:37,602 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 19:49:37,602 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 19:49:37,603 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 19:49:37,603 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 19:49:37,604 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:49:37" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 19:49:37,673 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 19:49:37,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 19:49:37,673 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 19:49:37,673 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 19:49:37,674 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 19:49:37,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 19:49:37,674 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 19:49:37,674 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 19:49:42,958 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 19:49:42,963 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 07:49:42 BoogieIcfgContainer [2018-10-24 19:49:42,964 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 19:49:42,965 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 19:49:42,965 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 19:49:42,975 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 19:49:42,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 07:49:35" (1/3) ... [2018-10-24 19:49:42,977 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fd4fd29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 07:49:42, skipping insertion in model container [2018-10-24 19:49:42,977 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:49:37" (2/3) ... [2018-10-24 19:49:42,977 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fd4fd29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 07:49:42, skipping insertion in model container [2018-10-24 19:49:42,977 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 07:49:42" (3/3) ... [2018-10-24 19:49:42,980 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label57_true-unreach-call.c [2018-10-24 19:49:42,992 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 19:49:43,011 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 19:49:43,030 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 19:49:43,093 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 19:49:43,093 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 19:49:43,094 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 19:49:43,094 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 19:49:43,094 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 19:49:43,094 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 19:49:43,094 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 19:49:43,095 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 19:49:43,146 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2018-10-24 19:49:43,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2018-10-24 19:49:43,165 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:49:43,167 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 19:49:43,170 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:49:43,176 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:49:43,177 INFO L82 PathProgramCache]: Analyzing trace with hash 790095017, now seen corresponding path program 1 times [2018-10-24 19:49:43,179 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:49:43,237 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:49:43,237 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:49:43,237 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:49:43,238 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:49:43,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:49:44,110 WARN L179 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 19:49:44,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:49:44,288 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:49:44,289 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 19:49:44,289 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:49:44,298 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 19:49:44,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 19:49:44,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 19:49:44,322 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 3 states. [2018-10-24 19:49:46,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:49:46,645 INFO L93 Difference]: Finished difference Result 844 states and 1489 transitions. [2018-10-24 19:49:46,648 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 19:49:46,650 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 168 [2018-10-24 19:49:46,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:49:46,675 INFO L225 Difference]: With dead ends: 844 [2018-10-24 19:49:46,675 INFO L226 Difference]: Without dead ends: 530 [2018-10-24 19:49:46,684 INFO L605 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 [2018-10-24 19:49:46,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2018-10-24 19:49:46,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 525. [2018-10-24 19:49:46,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 525 states. [2018-10-24 19:49:46,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 865 transitions. [2018-10-24 19:49:46,788 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 865 transitions. Word has length 168 [2018-10-24 19:49:46,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:49:46,789 INFO L481 AbstractCegarLoop]: Abstraction has 525 states and 865 transitions. [2018-10-24 19:49:46,790 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 19:49:46,790 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 865 transitions. [2018-10-24 19:49:46,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2018-10-24 19:49:46,802 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:49:46,806 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 19:49:46,806 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:49:46,807 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:49:46,807 INFO L82 PathProgramCache]: Analyzing trace with hash -553690579, now seen corresponding path program 1 times [2018-10-24 19:49:46,807 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:49:46,812 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:49:46,812 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:49:46,812 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:49:46,813 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:49:46,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:49:47,362 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:49:47,363 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:49:47,363 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 19:49:47,363 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:49:47,366 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 19:49:47,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 19:49:47,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 19:49:47,367 INFO L87 Difference]: Start difference. First operand 525 states and 865 transitions. Second operand 3 states. [2018-10-24 19:49:49,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:49:49,741 INFO L93 Difference]: Finished difference Result 1473 states and 2496 transitions. [2018-10-24 19:49:49,741 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 19:49:49,742 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 181 [2018-10-24 19:49:49,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:49:49,753 INFO L225 Difference]: With dead ends: 1473 [2018-10-24 19:49:49,753 INFO L226 Difference]: Without dead ends: 954 [2018-10-24 19:49:49,761 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 19:49:49,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 954 states. [2018-10-24 19:49:49,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 954 to 952. [2018-10-24 19:49:49,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 952 states. [2018-10-24 19:49:49,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 952 states to 952 states and 1496 transitions. [2018-10-24 19:49:49,811 INFO L78 Accepts]: Start accepts. Automaton has 952 states and 1496 transitions. Word has length 181 [2018-10-24 19:49:49,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:49:49,812 INFO L481 AbstractCegarLoop]: Abstraction has 952 states and 1496 transitions. [2018-10-24 19:49:49,812 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 19:49:49,812 INFO L276 IsEmpty]: Start isEmpty. Operand 952 states and 1496 transitions. [2018-10-24 19:49:49,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2018-10-24 19:49:49,818 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:49:49,818 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 19:49:49,818 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:49:49,819 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:49:49,819 INFO L82 PathProgramCache]: Analyzing trace with hash 1994788873, now seen corresponding path program 1 times [2018-10-24 19:49:49,819 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:49:49,820 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:49:49,821 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:49:49,821 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:49:49,821 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:49:49,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:49:50,122 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:49:50,123 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:49:50,123 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 19:49:50,123 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:49:50,125 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 19:49:50,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 19:49:50,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 19:49:50,127 INFO L87 Difference]: Start difference. First operand 952 states and 1496 transitions. Second operand 3 states. [2018-10-24 19:49:53,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:49:53,420 INFO L93 Difference]: Finished difference Result 2749 states and 4435 transitions. [2018-10-24 19:49:53,421 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 19:49:53,421 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 183 [2018-10-24 19:49:53,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:49:53,435 INFO L225 Difference]: With dead ends: 2749 [2018-10-24 19:49:53,435 INFO L226 Difference]: Without dead ends: 1803 [2018-10-24 19:49:53,442 INFO L605 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 [2018-10-24 19:49:53,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1803 states. [2018-10-24 19:49:53,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1803 to 1786. [2018-10-24 19:49:53,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1786 states. [2018-10-24 19:49:53,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1786 states to 1786 states and 2786 transitions. [2018-10-24 19:49:53,519 INFO L78 Accepts]: Start accepts. Automaton has 1786 states and 2786 transitions. Word has length 183 [2018-10-24 19:49:53,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:49:53,520 INFO L481 AbstractCegarLoop]: Abstraction has 1786 states and 2786 transitions. [2018-10-24 19:49:53,520 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 19:49:53,520 INFO L276 IsEmpty]: Start isEmpty. Operand 1786 states and 2786 transitions. [2018-10-24 19:49:53,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2018-10-24 19:49:53,529 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:49:53,530 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 19:49:53,530 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:49:53,530 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:49:53,531 INFO L82 PathProgramCache]: Analyzing trace with hash 2119210880, now seen corresponding path program 1 times [2018-10-24 19:49:53,531 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:49:53,533 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:49:53,533 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:49:53,533 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:49:53,533 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:49:53,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:49:53,829 WARN L179 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-10-24 19:49:53,931 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:49:53,931 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:49:53,932 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 19:49:53,932 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:49:53,932 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 19:49:53,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 19:49:53,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 19:49:53,933 INFO L87 Difference]: Start difference. First operand 1786 states and 2786 transitions. Second operand 6 states. [2018-10-24 19:49:57,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:49:57,551 INFO L93 Difference]: Finished difference Result 5451 states and 9148 transitions. [2018-10-24 19:49:57,552 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-24 19:49:57,552 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 186 [2018-10-24 19:49:57,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:49:57,592 INFO L225 Difference]: With dead ends: 5451 [2018-10-24 19:49:57,592 INFO L226 Difference]: Without dead ends: 3671 [2018-10-24 19:49:57,605 INFO L605 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 [2018-10-24 19:49:57,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3671 states. [2018-10-24 19:49:57,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3671 to 3579. [2018-10-24 19:49:57,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3579 states. [2018-10-24 19:49:57,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3579 states to 3579 states and 5696 transitions. [2018-10-24 19:49:57,770 INFO L78 Accepts]: Start accepts. Automaton has 3579 states and 5696 transitions. Word has length 186 [2018-10-24 19:49:57,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:49:57,771 INFO L481 AbstractCegarLoop]: Abstraction has 3579 states and 5696 transitions. [2018-10-24 19:49:57,771 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 19:49:57,771 INFO L276 IsEmpty]: Start isEmpty. Operand 3579 states and 5696 transitions. [2018-10-24 19:49:57,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2018-10-24 19:49:57,786 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:49:57,786 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 19:49:57,787 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:49:57,787 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:49:57,787 INFO L82 PathProgramCache]: Analyzing trace with hash 2107273996, now seen corresponding path program 1 times [2018-10-24 19:49:57,788 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:49:57,789 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:49:57,789 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:49:57,789 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:49:57,789 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:49:57,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:49:58,147 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 31 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:49:58,148 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 19:49:58,148 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 19:49:58,150 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 196 with the following transitions: [2018-10-24 19:49:58,153 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [24], [25], [29], [33], [36], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [805], [807], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-24 19:49:58,255 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 19:49:58,256 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... [2018-10-24 19:54:05,897 WARN L572 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-10-24 19:54:05,898 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-10-24 19:54:05,900 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-24 19:54:05,900 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 19:54:05,900 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 19:54:05,914 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:54:05,914 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 19:54:06,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:54:06,166 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 19:54:06,202 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-10-24 19:54:06,404 WARN L522 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 19:54:06,404 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 19:54:06,410 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 19:54:06,411 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 07:54:06 BoogieIcfgContainer [2018-10-24 19:54:06,411 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 19:54:06,412 INFO L168 Benchmark]: Toolchain (without parser) took 270579.04 ms. Allocated memory was 1.5 GB in the beginning and 3.4 GB in the end (delta: 1.9 GB). Free memory was 1.4 GB in the beginning and 2.7 GB in the end (delta: -1.3 GB). Peak memory consumption was 579.7 MB. Max. memory is 7.1 GB. [2018-10-24 19:54:06,413 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 19:54:06,413 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1200.80 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. [2018-10-24 19:54:06,414 INFO L168 Benchmark]: Boogie Procedure Inliner took 386.49 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 701.5 MB). Free memory was 1.3 GB in the beginning and 2.1 GB in the end (delta: -824.7 MB). Peak memory consumption was 40.2 MB. Max. memory is 7.1 GB. [2018-10-24 19:54:06,416 INFO L168 Benchmark]: Boogie Preprocessor took 176.22 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 14.5 MB). Peak memory consumption was 14.5 MB. Max. memory is 7.1 GB. [2018-10-24 19:54:06,417 INFO L168 Benchmark]: RCFGBuilder took 5361.66 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 1.8 GB in the end (delta: 259.4 MB). Peak memory consumption was 259.4 MB. Max. memory is 7.1 GB. [2018-10-24 19:54:06,418 INFO L168 Benchmark]: TraceAbstraction took 263445.92 ms. Allocated memory was 2.2 GB in the beginning and 3.4 GB in the end (delta: 1.2 GB). Free memory was 1.8 GB in the beginning and 2.7 GB in the end (delta: -878.2 MB). Peak memory consumption was 344.5 MB. Max. memory is 7.1 GB. [2018-10-24 19:54:06,423 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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 1200.80 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 386.49 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 701.5 MB). Free memory was 1.3 GB in the beginning and 2.1 GB in the end (delta: -824.7 MB). Peak memory consumption was 40.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 176.22 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 14.5 MB). Peak memory consumption was 14.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 5361.66 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 1.8 GB in the end (delta: 259.4 MB). Peak memory consumption was 259.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 263445.92 ms. Allocated memory was 2.2 GB in the beginning and 3.4 GB in the end (delta: 1.2 GB). Free memory was 1.8 GB in the beginning and 2.7 GB in the end (delta: -878.2 MB). Peak memory consumption was 344.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 1518]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 1518). Cancelled while BasicCegarLoop was analyzing trace of length 196 with TraceHistMax 3,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 5 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 312 locations, 1 error locations. TIMEOUT Result, 263.3s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 11.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1046 SDtfs, 1612 SDslu, 479 SDs, 0 SdLazy, 3467 SolverSat, 762 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 9.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 4 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3579occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 247.7s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 4 MinimizatonAttempts, 116 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 718 NumberOfCodeBlocks, 718 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 714 ConstructedInterpolants, 0 QuantifiedInterpolants, 354754 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 37/37 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown