./Ultimate.py --spec ../../sv-benchmarks/c/NoOverflows.prp --file ../../sv-benchmarks/c/termination-crafted-lit/aviad_true-termination_true-no-overflow.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_e4389b6b-376c-458f-ad3c-38354753476a/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_e4389b6b-376c-458f-ad3c-38354753476a/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_e4389b6b-376c-458f-ad3c-38354753476a/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_e4389b6b-376c-458f-ad3c-38354753476a/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/aviad_true-termination_true-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_e4389b6b-376c-458f-ad3c-38354753476a/bin-2019/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_e4389b6b-376c-458f-ad3c-38354753476a/bin-2019/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 1c10aefceff4fe6e12a2ebf53b3727fe6584e20c ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-10-27 05:43:47,748 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 05:43:47,749 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 05:43:47,759 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 05:43:47,759 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 05:43:47,760 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 05:43:47,762 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 05:43:47,763 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 05:43:47,766 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 05:43:47,767 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 05:43:47,767 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 05:43:47,768 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 05:43:47,768 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 05:43:47,770 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 05:43:47,771 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 05:43:47,772 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 05:43:47,772 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 05:43:47,774 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 05:43:47,776 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 05:43:47,778 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 05:43:47,779 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 05:43:47,780 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 05:43:47,782 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 05:43:47,782 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 05:43:47,782 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 05:43:47,783 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 05:43:47,784 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 05:43:47,785 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 05:43:47,785 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 05:43:47,786 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 05:43:47,786 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 05:43:47,787 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 05:43:47,787 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 05:43:47,787 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 05:43:47,788 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 05:43:47,789 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 05:43:47,790 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_e4389b6b-376c-458f-ad3c-38354753476a/bin-2019/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf [2018-10-27 05:43:47,802 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 05:43:47,802 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 05:43:47,803 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 05:43:47,803 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 05:43:47,803 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 05:43:47,803 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 05:43:47,804 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 05:43:47,804 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 05:43:47,804 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 05:43:47,804 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 05:43:47,804 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 05:43:47,805 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 05:43:47,806 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-10-27 05:43:47,806 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 05:43:47,806 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 05:43:47,807 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 05:43:47,807 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 05:43:47,807 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 05:43:47,807 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2018-10-27 05:43:47,807 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 05:43:47,807 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 05:43:47,807 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 05:43:47,808 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 05:43:47,808 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 05:43:47,808 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 05:43:47,808 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 05:43:47,808 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 05:43:47,808 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 05:43:47,808 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 05:43:47,809 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 05:43:47,809 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 05:43:47,809 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 05:43:47,809 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 05:43:47,809 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_e4389b6b-376c-458f-ad3c-38354753476a/bin-2019/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1c10aefceff4fe6e12a2ebf53b3727fe6584e20c [2018-10-27 05:43:47,840 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 05:43:47,850 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 05:43:47,853 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 05:43:47,855 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 05:43:47,855 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 05:43:47,856 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_e4389b6b-376c-458f-ad3c-38354753476a/bin-2019/utaipan/../../sv-benchmarks/c/termination-crafted-lit/aviad_true-termination_true-no-overflow.c [2018-10-27 05:43:47,906 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_e4389b6b-376c-458f-ad3c-38354753476a/bin-2019/utaipan/data/12dfbdfa2/facf2bbffd664fe681f09c792ef383d4/FLAG300ceb4c7 [2018-10-27 05:43:48,281 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 05:43:48,281 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_e4389b6b-376c-458f-ad3c-38354753476a/sv-benchmarks/c/termination-crafted-lit/aviad_true-termination_true-no-overflow.c [2018-10-27 05:43:48,288 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_e4389b6b-376c-458f-ad3c-38354753476a/bin-2019/utaipan/data/12dfbdfa2/facf2bbffd664fe681f09c792ef383d4/FLAG300ceb4c7 [2018-10-27 05:43:48,302 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_e4389b6b-376c-458f-ad3c-38354753476a/bin-2019/utaipan/data/12dfbdfa2/facf2bbffd664fe681f09c792ef383d4 [2018-10-27 05:43:48,308 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 05:43:48,309 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-10-27 05:43:48,310 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 05:43:48,311 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 05:43:48,318 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 05:43:48,319 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:43:48" (1/1) ... [2018-10-27 05:43:48,322 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16cdcec4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:43:48, skipping insertion in model container [2018-10-27 05:43:48,322 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:43:48" (1/1) ... [2018-10-27 05:43:48,333 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 05:43:48,351 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 05:43:48,479 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 05:43:48,481 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 05:43:48,492 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 05:43:48,503 INFO L193 MainTranslator]: Completed translation [2018-10-27 05:43:48,504 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:43:48 WrapperNode [2018-10-27 05:43:48,504 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 05:43:48,505 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 05:43:48,505 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 05:43:48,505 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 05:43:48,513 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:43:48" (1/1) ... [2018-10-27 05:43:48,517 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:43:48" (1/1) ... [2018-10-27 05:43:48,522 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 05:43:48,522 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 05:43:48,522 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 05:43:48,522 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 05:43:48,530 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:43:48" (1/1) ... [2018-10-27 05:43:48,530 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:43:48" (1/1) ... [2018-10-27 05:43:48,531 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:43:48" (1/1) ... [2018-10-27 05:43:48,531 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:43:48" (1/1) ... [2018-10-27 05:43:48,534 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:43:48" (1/1) ... [2018-10-27 05:43:48,538 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:43:48" (1/1) ... [2018-10-27 05:43:48,538 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:43:48" (1/1) ... [2018-10-27 05:43:48,539 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 05:43:48,540 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 05:43:48,540 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 05:43:48,540 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 05:43:48,541 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:43:48" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e4389b6b-376c-458f-ad3c-38354753476a/bin-2019/utaipan/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 [2018-10-27 05:43:48,672 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 05:43:48,672 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 05:43:48,672 INFO L130 BoogieDeclarations]: Found specification of procedure f [2018-10-27 05:43:48,672 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2018-10-27 05:43:48,673 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 05:43:48,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 05:43:48,673 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 05:43:48,673 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 05:43:49,010 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 05:43:49,010 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:43:49 BoogieIcfgContainer [2018-10-27 05:43:49,011 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 05:43:49,011 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 05:43:49,011 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 05:43:49,027 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 05:43:49,027 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 05:43:48" (1/3) ... [2018-10-27 05:43:49,028 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3db89258 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:43:49, skipping insertion in model container [2018-10-27 05:43:49,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:43:48" (2/3) ... [2018-10-27 05:43:49,028 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3db89258 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:43:49, skipping insertion in model container [2018-10-27 05:43:49,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:43:49" (3/3) ... [2018-10-27 05:43:49,030 INFO L112 eAbstractionObserver]: Analyzing ICFG aviad_true-termination_true-no-overflow.c [2018-10-27 05:43:49,051 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 05:43:49,058 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2018-10-27 05:43:49,091 INFO L257 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2018-10-27 05:43:49,137 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 05:43:49,139 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 05:43:49,139 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 05:43:49,140 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 05:43:49,140 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 05:43:49,140 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 05:43:49,140 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 05:43:49,140 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 05:43:49,159 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2018-10-27 05:43:49,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-10-27 05:43:49,168 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:43:49,169 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 05:43:49,171 INFO L424 AbstractCegarLoop]: === Iteration 1 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-10-27 05:43:49,179 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:43:49,180 INFO L82 PathProgramCache]: Analyzing trace with hash 667613289, now seen corresponding path program 1 times [2018-10-27 05:43:49,182 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:43:49,233 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:43:49,233 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:43:49,233 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:43:49,233 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:43:49,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:43:49,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 05:43:49,467 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 05:43:49,468 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 05:43:49,468 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 05:43:49,471 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 05:43:49,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 05:43:49,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-27 05:43:49,483 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 5 states. [2018-10-27 05:43:49,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:43:49,629 INFO L93 Difference]: Finished difference Result 39 states and 40 transitions. [2018-10-27 05:43:49,629 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-27 05:43:49,631 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2018-10-27 05:43:49,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:43:49,640 INFO L225 Difference]: With dead ends: 39 [2018-10-27 05:43:49,640 INFO L226 Difference]: Without dead ends: 21 [2018-10-27 05:43:49,643 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-27 05:43:49,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-10-27 05:43:49,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-10-27 05:43:49,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-10-27 05:43:49,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2018-10-27 05:43:49,681 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 11 [2018-10-27 05:43:49,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:43:49,681 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2018-10-27 05:43:49,681 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 05:43:49,681 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2018-10-27 05:43:49,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-10-27 05:43:49,682 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:43:49,682 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 05:43:49,683 INFO L424 AbstractCegarLoop]: === Iteration 2 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-10-27 05:43:49,683 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:43:49,683 INFO L82 PathProgramCache]: Analyzing trace with hash -778824467, now seen corresponding path program 1 times [2018-10-27 05:43:49,683 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:43:49,684 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:43:49,684 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:43:49,685 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:43:49,685 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:43:49,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:43:49,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 05:43:49,726 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 05:43:49,726 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-27 05:43:49,726 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 05:43:49,727 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 05:43:49,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 05:43:49,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 05:43:49,728 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand 3 states. [2018-10-27 05:43:49,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:43:49,776 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2018-10-27 05:43:49,777 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 05:43:49,777 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2018-10-27 05:43:49,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:43:49,778 INFO L225 Difference]: With dead ends: 21 [2018-10-27 05:43:49,778 INFO L226 Difference]: Without dead ends: 19 [2018-10-27 05:43:49,779 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 05:43:49,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-10-27 05:43:49,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-10-27 05:43:49,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-10-27 05:43:49,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2018-10-27 05:43:49,781 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 12 [2018-10-27 05:43:49,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:43:49,782 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2018-10-27 05:43:49,782 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 05:43:49,782 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2018-10-27 05:43:49,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-10-27 05:43:49,782 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:43:49,783 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 05:43:49,783 INFO L424 AbstractCegarLoop]: === Iteration 3 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-10-27 05:43:49,783 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:43:49,783 INFO L82 PathProgramCache]: Analyzing trace with hash -1126001489, now seen corresponding path program 1 times [2018-10-27 05:43:49,784 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:43:49,784 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:43:49,785 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:43:49,785 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:43:49,785 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:43:49,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:43:49,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 05:43:49,835 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 05:43:49,835 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 05:43:49,835 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 05:43:49,836 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 05:43:49,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 05:43:49,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-27 05:43:49,836 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand 4 states. [2018-10-27 05:43:49,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:43:49,946 INFO L93 Difference]: Finished difference Result 31 states and 33 transitions. [2018-10-27 05:43:49,946 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-27 05:43:49,946 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2018-10-27 05:43:49,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:43:49,947 INFO L225 Difference]: With dead ends: 31 [2018-10-27 05:43:49,947 INFO L226 Difference]: Without dead ends: 30 [2018-10-27 05:43:49,948 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-27 05:43:49,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-10-27 05:43:49,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2018-10-27 05:43:49,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-10-27 05:43:49,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2018-10-27 05:43:49,953 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 14 [2018-10-27 05:43:49,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:43:49,953 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2018-10-27 05:43:49,953 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 05:43:49,953 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2018-10-27 05:43:49,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-27 05:43:49,954 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:43:49,954 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 05:43:49,954 INFO L424 AbstractCegarLoop]: === Iteration 4 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-10-27 05:43:49,955 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:43:49,955 INFO L82 PathProgramCache]: Analyzing trace with hash -546307731, now seen corresponding path program 1 times [2018-10-27 05:43:49,955 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:43:49,956 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:43:49,956 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:43:49,956 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:43:49,956 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:43:49,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:43:50,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 05:43:50,094 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 05:43:50,095 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 05:43:50,095 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 05:43:50,095 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 05:43:50,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 05:43:50,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-27 05:43:50,096 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand 4 states. [2018-10-27 05:43:50,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:43:50,139 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2018-10-27 05:43:50,140 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 05:43:50,140 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2018-10-27 05:43:50,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:43:50,141 INFO L225 Difference]: With dead ends: 28 [2018-10-27 05:43:50,141 INFO L226 Difference]: Without dead ends: 27 [2018-10-27 05:43:50,141 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-27 05:43:50,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-10-27 05:43:50,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-10-27 05:43:50,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-10-27 05:43:50,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2018-10-27 05:43:50,145 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 15 [2018-10-27 05:43:50,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:43:50,146 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2018-10-27 05:43:50,146 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 05:43:50,146 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2018-10-27 05:43:50,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-10-27 05:43:50,146 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:43:50,146 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 05:43:50,147 INFO L424 AbstractCegarLoop]: === Iteration 5 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-10-27 05:43:50,147 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:43:50,147 INFO L82 PathProgramCache]: Analyzing trace with hash -2098802301, now seen corresponding path program 1 times [2018-10-27 05:43:50,147 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:43:50,148 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:43:50,148 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:43:50,148 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:43:50,148 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:43:50,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:43:50,263 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 05:43:50,264 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:43:50,264 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 05:43:50,265 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 23 with the following transitions: [2018-10-27 05:43:50,266 INFO L202 CegarAbsIntRunner]: [0], [1], [5], [11], [20], [22], [24], [26], [27], [28], [30], [39], [43], [44], [45], [47] [2018-10-27 05:43:50,317 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-27 05:43:50,317 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 05:43:50,441 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 05:43:50,653 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 05:43:50,654 INFO L272 AbstractInterpreter]: Visited 16 different actions 79 times. Merged at 8 different actions 56 times. Widened at 1 different actions 3 times. Found 1 fixpoints after 1 different actions. Largest state had 5 variables. [2018-10-27 05:43:50,698 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:43:50,698 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 05:43:50,777 INFO L227 lantSequenceWeakener]: Weakened 15 states. On average, predicates are now at 47.22% of their original sizes. [2018-10-27 05:43:50,777 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 05:43:51,152 INFO L415 sIntCurrentIteration]: We unified 21 AI predicates to 21 [2018-10-27 05:43:51,152 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 05:43:51,153 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 05:43:51,153 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [5] total 14 [2018-10-27 05:43:51,153 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 05:43:51,154 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-27 05:43:51,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-27 05:43:51,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-10-27 05:43:51,155 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand 11 states. [2018-10-27 05:43:51,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:43:51,898 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2018-10-27 05:43:51,898 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-27 05:43:51,898 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 22 [2018-10-27 05:43:51,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:43:51,899 INFO L225 Difference]: With dead ends: 27 [2018-10-27 05:43:51,899 INFO L226 Difference]: Without dead ends: 0 [2018-10-27 05:43:51,901 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2018-10-27 05:43:51,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-27 05:43:51,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-27 05:43:51,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-27 05:43:51,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-27 05:43:51,902 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2018-10-27 05:43:51,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:43:51,902 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-27 05:43:51,902 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-27 05:43:51,903 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-27 05:43:51,903 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-27 05:43:51,910 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-10-27 05:43:52,343 WARN L179 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 22 [2018-10-27 05:43:52,345 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-10-27 05:43:52,345 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-10-27 05:43:52,345 INFO L425 ceAbstractionStarter]: For program point fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 13) no Hoare annotation was computed. [2018-10-27 05:43:52,346 INFO L425 ceAbstractionStarter]: For program point fFINAL(lines 9 18) no Hoare annotation was computed. [2018-10-27 05:43:52,346 INFO L425 ceAbstractionStarter]: For program point L15(line 15) no Hoare annotation was computed. [2018-10-27 05:43:52,346 INFO L425 ceAbstractionStarter]: For program point L15-1(line 15) no Hoare annotation was computed. [2018-10-27 05:43:52,346 INFO L425 ceAbstractionStarter]: For program point L13(lines 13 14) no Hoare annotation was computed. [2018-10-27 05:43:52,346 INFO L425 ceAbstractionStarter]: For program point L13-1(line 13) no Hoare annotation was computed. [2018-10-27 05:43:52,346 INFO L425 ceAbstractionStarter]: For program point fErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 15) no Hoare annotation was computed. [2018-10-27 05:43:52,346 INFO L425 ceAbstractionStarter]: For program point L13-2(line 13) no Hoare annotation was computed. [2018-10-27 05:43:52,346 INFO L425 ceAbstractionStarter]: For program point L11-1(lines 11 16) no Hoare annotation was computed. [2018-10-27 05:43:52,347 INFO L425 ceAbstractionStarter]: For program point L13-4(lines 13 14) no Hoare annotation was computed. [2018-10-27 05:43:52,347 INFO L421 ceAbstractionStarter]: At program point L11-3(lines 11 16) the Hoare annotation is: (let ((.cse0 (* 2 |f_#in~a|))) (or (and (<= (+ f_~count~0 f_~a) 2147483647) (<= f_~count~0 (+ f_~a 2147483648)) (<= 0 f_~count~0)) (< (+ .cse0 4294967296) 0) (< 4294967294 .cse0))) [2018-10-27 05:43:52,347 INFO L425 ceAbstractionStarter]: For program point fEXIT(lines 9 18) no Hoare annotation was computed. [2018-10-27 05:43:52,347 INFO L425 ceAbstractionStarter]: For program point L11-4(lines 11 16) no Hoare annotation was computed. [2018-10-27 05:43:52,347 INFO L428 ceAbstractionStarter]: At program point fENTRY(lines 9 18) the Hoare annotation is: true [2018-10-27 05:43:52,348 INFO L425 ceAbstractionStarter]: For program point fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2018-10-27 05:43:52,348 INFO L425 ceAbstractionStarter]: For program point fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 13) no Hoare annotation was computed. [2018-10-27 05:43:52,348 INFO L425 ceAbstractionStarter]: For program point L14(line 14) no Hoare annotation was computed. [2018-10-27 05:43:52,348 INFO L425 ceAbstractionStarter]: For program point L14-1(line 14) no Hoare annotation was computed. [2018-10-27 05:43:52,348 INFO L425 ceAbstractionStarter]: For program point fErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 15) no Hoare annotation was computed. [2018-10-27 05:43:52,348 INFO L425 ceAbstractionStarter]: For program point fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2018-10-27 05:43:52,348 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-10-27 05:43:52,349 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-10-27 05:43:52,349 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-10-27 05:43:52,349 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-10-27 05:43:52,353 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 20 24) the Hoare annotation is: true [2018-10-27 05:43:52,353 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 20 24) no Hoare annotation was computed. [2018-10-27 05:43:52,353 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 20 24) no Hoare annotation was computed. [2018-10-27 05:43:52,354 INFO L421 ceAbstractionStarter]: At program point L22(line 22) the Hoare annotation is: (let ((.cse0 (* 2 main_~x~0))) (and (<= 0 (+ .cse0 4294967296)) (<= .cse0 4294967294))) [2018-10-27 05:43:52,354 INFO L425 ceAbstractionStarter]: For program point L22-1(line 22) no Hoare annotation was computed. [2018-10-27 05:43:52,362 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 05:43:52 BoogieIcfgContainer [2018-10-27 05:43:52,363 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 05:43:52,363 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-27 05:43:52,363 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-27 05:43:52,363 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-27 05:43:52,364 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:43:49" (3/4) ... [2018-10-27 05:43:52,367 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-10-27 05:43:52,373 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-10-27 05:43:52,373 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure f [2018-10-27 05:43:52,374 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-10-27 05:43:52,378 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2018-10-27 05:43:52,378 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-10-27 05:43:52,378 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-10-27 05:43:52,406 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((count + a <= 2147483647 && count <= a + 2147483648) && 0 <= count) || 2 * \old(a) + 4294967296 < 0) || 4294967294 < 2 * \old(a) [2018-10-27 05:43:52,422 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_e4389b6b-376c-458f-ad3c-38354753476a/bin-2019/utaipan/witness.graphml [2018-10-27 05:43:52,422 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-27 05:43:52,423 INFO L168 Benchmark]: Toolchain (without parser) took 4114.60 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 960.7 MB in the beginning and 963.2 MB in the end (delta: -2.5 MB). Peak memory consumption was 139.1 MB. Max. memory is 11.5 GB. [2018-10-27 05:43:52,424 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 05:43:52,424 INFO L168 Benchmark]: CACSL2BoogieTranslator took 193.86 ms. Allocated memory is still 1.0 GB. Free memory was 960.7 MB in the beginning and 950.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-10-27 05:43:52,425 INFO L168 Benchmark]: Boogie Procedure Inliner took 17.23 ms. Allocated memory is still 1.0 GB. Free memory is still 950.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 05:43:52,425 INFO L168 Benchmark]: Boogie Preprocessor took 17.50 ms. Allocated memory is still 1.0 GB. Free memory was 950.0 MB in the beginning and 947.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-10-27 05:43:52,425 INFO L168 Benchmark]: RCFGBuilder took 470.76 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 947.3 MB in the beginning and 1.1 GB in the end (delta: -183.5 MB). Peak memory consumption was 20.0 MB. Max. memory is 11.5 GB. [2018-10-27 05:43:52,426 INFO L168 Benchmark]: TraceAbstraction took 3351.42 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 965.9 MB in the end (delta: 162.3 MB). Peak memory consumption was 162.3 MB. Max. memory is 11.5 GB. [2018-10-27 05:43:52,426 INFO L168 Benchmark]: Witness Printer took 59.19 ms. Allocated memory is still 1.2 GB. Free memory was 965.9 MB in the beginning and 963.2 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-10-27 05:43:52,429 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 193.86 ms. Allocated memory is still 1.0 GB. Free memory was 960.7 MB in the beginning and 950.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 17.23 ms. Allocated memory is still 1.0 GB. Free memory is still 950.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 17.50 ms. Allocated memory is still 1.0 GB. Free memory was 950.0 MB in the beginning and 947.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 470.76 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 947.3 MB in the beginning and 1.1 GB in the end (delta: -183.5 MB). Peak memory consumption was 20.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3351.42 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 965.9 MB in the end (delta: 162.3 MB). Peak memory consumption was 162.3 MB. Max. memory is 11.5 GB. * Witness Printer took 59.19 ms. Allocated memory is still 1.2 GB. Free memory was 965.9 MB in the beginning and 963.2 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 14]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 14]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 13]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 13]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: (((count + a <= 2147483647 && count <= a + 2147483648) && 0 <= count) || 2 * \old(a) + 4294967296 < 0) || 4294967294 < 2 * \old(a) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 31 locations, 6 error locations. SAFE Result, 3.2s OverallTime, 5 OverallIterations, 2 TraceHistogramMax, 1.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.4s HoareAnnotationTime, HoareTripleCheckerStatistics: 74 SDtfs, 83 SDslu, 135 SDs, 0 SdLazy, 62 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 41 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.4s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.8999999999999999 AbsIntWeakeningRatio, 0.47619047619047616 AbsIntAvgWeakeningVarsNumRemoved, 17.095238095238095 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 8 NumberOfFragments, 47 HoareAnnotationTreeSize, 7 FomulaSimplifications, 74 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 58 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 74 NumberOfCodeBlocks, 74 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 69 ConstructedInterpolants, 0 QuantifiedInterpolants, 2249 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 0/7 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...