./Ultimate.py --spec ../../sv-benchmarks/c/NoOverflows.prp --file ../../sv-benchmarks/c/recursive-simple/id_b3_o2_false-unreach-call_true-termination_true-no-overflow.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_08b4fa59-cd0f-44e8-9dc7-700f8ccc0fc7/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_08b4fa59-cd0f-44e8-9dc7-700f8ccc0fc7/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_08b4fa59-cd0f-44e8-9dc7-700f8ccc0fc7/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_08b4fa59-cd0f-44e8-9dc7-700f8ccc0fc7/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/recursive-simple/id_b3_o2_false-unreach-call_true-termination_true-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_08b4fa59-cd0f-44e8-9dc7-700f8ccc0fc7/bin-2019/utaipan/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_08b4fa59-cd0f-44e8-9dc7-700f8ccc0fc7/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 32bit --witnessprinter.graph.data.programhash 3bf945356a28265a842df89cdbf40bfa9a223140 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-11-10 06:01:55,358 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 06:01:55,359 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 06:01:55,366 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 06:01:55,366 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 06:01:55,367 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 06:01:55,368 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 06:01:55,369 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 06:01:55,370 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 06:01:55,370 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 06:01:55,371 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 06:01:55,371 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 06:01:55,372 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 06:01:55,372 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 06:01:55,373 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 06:01:55,374 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 06:01:55,374 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 06:01:55,375 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 06:01:55,377 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 06:01:55,378 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 06:01:55,378 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 06:01:55,379 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 06:01:55,381 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 06:01:55,381 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 06:01:55,381 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 06:01:55,382 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 06:01:55,382 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 06:01:55,383 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 06:01:55,384 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 06:01:55,384 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 06:01:55,384 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 06:01:55,385 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 06:01:55,385 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 06:01:55,385 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 06:01:55,386 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 06:01:55,386 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 06:01:55,386 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_08b4fa59-cd0f-44e8-9dc7-700f8ccc0fc7/bin-2019/utaipan/config/svcomp-Overflow-32bit-Taipan_Default.epf [2018-11-10 06:01:55,396 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 06:01:55,396 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 06:01:55,397 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-10 06:01:55,397 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-10 06:01:55,397 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-10 06:01:55,397 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-10 06:01:55,397 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-10 06:01:55,397 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-10 06:01:55,397 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-10 06:01:55,397 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-10 06:01:55,398 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-10 06:01:55,398 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 06:01:55,398 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-10 06:01:55,398 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-10 06:01:55,399 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-10 06:01:55,399 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-10 06:01:55,399 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 06:01:55,399 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-10 06:01:55,399 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-10 06:01:55,399 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-10 06:01:55,399 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2018-11-10 06:01:55,400 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-10 06:01:55,400 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-10 06:01:55,400 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-10 06:01:55,400 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 06:01:55,400 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-10 06:01:55,400 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-10 06:01:55,400 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-10 06:01:55,400 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 06:01:55,400 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 06:01:55,400 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-10 06:01:55,401 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-10 06:01:55,401 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-10 06:01:55,401 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-10 06:01:55,401 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-10 06:01:55,401 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-10 06:01:55,401 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_08b4fa59-cd0f-44e8-9dc7-700f8ccc0fc7/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 -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3bf945356a28265a842df89cdbf40bfa9a223140 [2018-11-10 06:01:55,422 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 06:01:55,430 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 06:01:55,432 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 06:01:55,433 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 06:01:55,433 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 06:01:55,433 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_08b4fa59-cd0f-44e8-9dc7-700f8ccc0fc7/bin-2019/utaipan/../../sv-benchmarks/c/recursive-simple/id_b3_o2_false-unreach-call_true-termination_true-no-overflow.c [2018-11-10 06:01:55,467 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_08b4fa59-cd0f-44e8-9dc7-700f8ccc0fc7/bin-2019/utaipan/data/c286c8609/2f3af06329814cd9aa33a5daa83fba1e/FLAGe35675055 [2018-11-10 06:01:55,854 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 06:01:55,854 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_08b4fa59-cd0f-44e8-9dc7-700f8ccc0fc7/sv-benchmarks/c/recursive-simple/id_b3_o2_false-unreach-call_true-termination_true-no-overflow.c [2018-11-10 06:01:55,858 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_08b4fa59-cd0f-44e8-9dc7-700f8ccc0fc7/bin-2019/utaipan/data/c286c8609/2f3af06329814cd9aa33a5daa83fba1e/FLAGe35675055 [2018-11-10 06:01:55,867 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_08b4fa59-cd0f-44e8-9dc7-700f8ccc0fc7/bin-2019/utaipan/data/c286c8609/2f3af06329814cd9aa33a5daa83fba1e [2018-11-10 06:01:55,869 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 06:01:55,870 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-10 06:01:55,871 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 06:01:55,871 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 06:01:55,873 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 06:01:55,874 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 06:01:55" (1/1) ... [2018-11-10 06:01:55,875 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@133164ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:01:55, skipping insertion in model container [2018-11-10 06:01:55,875 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 06:01:55" (1/1) ... [2018-11-10 06:01:55,880 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 06:01:55,890 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 06:01:55,978 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 06:01:55,980 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 06:01:55,989 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 06:01:55,997 INFO L193 MainTranslator]: Completed translation [2018-11-10 06:01:55,997 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:01:55 WrapperNode [2018-11-10 06:01:55,997 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 06:01:55,998 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-10 06:01:55,998 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-10 06:01:55,998 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-10 06:01:56,005 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:01:55" (1/1) ... [2018-11-10 06:01:56,010 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:01:55" (1/1) ... [2018-11-10 06:01:56,014 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-10 06:01:56,015 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 06:01:56,015 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 06:01:56,015 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 06:01:56,023 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:01:55" (1/1) ... [2018-11-10 06:01:56,023 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:01:55" (1/1) ... [2018-11-10 06:01:56,023 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:01:55" (1/1) ... [2018-11-10 06:01:56,024 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:01:55" (1/1) ... [2018-11-10 06:01:56,026 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:01:55" (1/1) ... [2018-11-10 06:01:56,028 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:01:55" (1/1) ... [2018-11-10 06:01:56,029 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:01:55" (1/1) ... [2018-11-10 06:01:56,030 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 06:01:56,030 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 06:01:56,030 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 06:01:56,030 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 06:01:56,031 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:01:55" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_08b4fa59-cd0f-44e8-9dc7-700f8ccc0fc7/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 [2018-11-10 06:01:56,110 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-10 06:01:56,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-10 06:01:56,110 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 06:01:56,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 06:01:56,111 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-10 06:01:56,111 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-10 06:01:56,111 INFO L130 BoogieDeclarations]: Found specification of procedure id [2018-11-10 06:01:56,111 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2018-11-10 06:01:56,255 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 06:01:56,256 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 06:01:56 BoogieIcfgContainer [2018-11-10 06:01:56,256 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 06:01:56,257 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-10 06:01:56,257 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-10 06:01:56,260 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-10 06:01:56,260 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 06:01:55" (1/3) ... [2018-11-10 06:01:56,261 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25469b1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 06:01:56, skipping insertion in model container [2018-11-10 06:01:56,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:01:55" (2/3) ... [2018-11-10 06:01:56,262 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25469b1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 06:01:56, skipping insertion in model container [2018-11-10 06:01:56,262 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 06:01:56" (3/3) ... [2018-11-10 06:01:56,264 INFO L112 eAbstractionObserver]: Analyzing ICFG id_b3_o2_false-unreach-call_true-termination_true-no-overflow.c [2018-11-10 06:01:56,274 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-10 06:01:56,281 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2018-11-10 06:01:56,296 INFO L257 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2018-11-10 06:01:56,323 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-10 06:01:56,323 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-10 06:01:56,323 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-10 06:01:56,323 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-10 06:01:56,323 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-10 06:01:56,324 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-10 06:01:56,324 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-10 06:01:56,324 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-10 06:01:56,339 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2018-11-10 06:01:56,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-11-10 06:01:56,344 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 06:01:56,345 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 06:01:56,347 INFO L424 AbstractCegarLoop]: === Iteration 1 === [idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 06:01:56,353 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 06:01:56,353 INFO L82 PathProgramCache]: Analyzing trace with hash 755938958, now seen corresponding path program 1 times [2018-11-10 06:01:56,356 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 06:01:56,387 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 06:01:56,387 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 06:01:56,387 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 06:01:56,388 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 06:01:56,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 06:01:56,484 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-11-10 06:01:56,486 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 06:01:56,486 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-10 06:01:56,486 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-10 06:01:56,490 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-10 06:01:56,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-10 06:01:56,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-10 06:01:56,505 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 4 states. [2018-11-10 06:01:56,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 06:01:56,543 INFO L93 Difference]: Finished difference Result 35 states and 38 transitions. [2018-11-10 06:01:56,543 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-10 06:01:56,544 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2018-11-10 06:01:56,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 06:01:56,550 INFO L225 Difference]: With dead ends: 35 [2018-11-10 06:01:56,551 INFO L226 Difference]: Without dead ends: 22 [2018-11-10 06:01:56,553 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-10 06:01:56,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-11-10 06:01:56,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2018-11-10 06:01:56,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-11-10 06:01:56,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2018-11-10 06:01:56,578 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 18 [2018-11-10 06:01:56,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 06:01:56,578 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2018-11-10 06:01:56,578 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-10 06:01:56,578 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2018-11-10 06:01:56,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-11-10 06:01:56,579 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 06:01:56,579 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 06:01:56,579 INFO L424 AbstractCegarLoop]: === Iteration 2 === [idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 06:01:56,579 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 06:01:56,580 INFO L82 PathProgramCache]: Analyzing trace with hash 323921339, now seen corresponding path program 1 times [2018-11-10 06:01:56,580 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 06:01:56,581 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 06:01:56,581 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 06:01:56,581 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 06:01:56,582 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 06:01:56,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 06:01:56,641 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-11-10 06:01:56,641 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 06:01:56,641 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-10 06:01:56,642 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-10 06:01:56,643 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-10 06:01:56,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-10 06:01:56,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-10 06:01:56,644 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand 5 states. [2018-11-10 06:01:56,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 06:01:56,667 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2018-11-10 06:01:56,667 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-10 06:01:56,667 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2018-11-10 06:01:56,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 06:01:56,669 INFO L225 Difference]: With dead ends: 33 [2018-11-10 06:01:56,669 INFO L226 Difference]: Without dead ends: 25 [2018-11-10 06:01:56,670 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-10 06:01:56,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-11-10 06:01:56,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2018-11-10 06:01:56,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-11-10 06:01:56,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2018-11-10 06:01:56,675 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 24 [2018-11-10 06:01:56,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 06:01:56,675 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2018-11-10 06:01:56,675 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-10 06:01:56,675 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2018-11-10 06:01:56,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-11-10 06:01:56,676 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 06:01:56,676 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 06:01:56,676 INFO L424 AbstractCegarLoop]: === Iteration 3 === [idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 06:01:56,677 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 06:01:56,678 INFO L82 PathProgramCache]: Analyzing trace with hash 324844860, now seen corresponding path program 1 times [2018-11-10 06:01:56,678 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 06:01:56,679 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 06:01:56,679 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 06:01:56,679 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 06:01:56,679 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 06:01:56,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 06:01:56,746 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-11-10 06:01:56,746 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 06:01:56,746 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-10 06:01:56,747 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 25 with the following transitions: [2018-11-10 06:01:56,748 INFO L202 CegarAbsIntRunner]: [0], [4], [16], [19], [20], [22], [23], [24], [26], [30], [31], [32], [33], [34], [36], [38], [39] [2018-11-10 06:01:56,789 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-10 06:01:56,789 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-10 06:01:56,867 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-10 06:01:56,941 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-10 06:01:56,943 INFO L272 AbstractInterpreter]: Visited 17 different actions 68 times. Merged at 6 different actions 24 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 5 variables. [2018-11-10 06:01:56,949 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 06:01:56,949 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-10 06:01:57,025 INFO L227 lantSequenceWeakener]: Weakened 15 states. On average, predicates are now at 63.33% of their original sizes. [2018-11-10 06:01:57,025 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-10 06:01:57,171 INFO L415 sIntCurrentIteration]: We unified 23 AI predicates to 23 [2018-11-10 06:01:57,172 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-10 06:01:57,172 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-10 06:01:57,172 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [6] total 18 [2018-11-10 06:01:57,172 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-10 06:01:57,173 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-11-10 06:01:57,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-11-10 06:01:57,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2018-11-10 06:01:57,173 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 14 states. [2018-11-10 06:01:57,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 06:01:57,513 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2018-11-10 06:01:57,513 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-10 06:01:57,513 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 24 [2018-11-10 06:01:57,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 06:01:57,514 INFO L225 Difference]: With dead ends: 30 [2018-11-10 06:01:57,514 INFO L226 Difference]: Without dead ends: 28 [2018-11-10 06:01:57,515 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 30 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=105, Invalid=315, Unknown=0, NotChecked=0, Total=420 [2018-11-10 06:01:57,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-11-10 06:01:57,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2018-11-10 06:01:57,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-11-10 06:01:57,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2018-11-10 06:01:57,518 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 24 [2018-11-10 06:01:57,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 06:01:57,518 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2018-11-10 06:01:57,518 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-11-10 06:01:57,519 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2018-11-10 06:01:57,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-11-10 06:01:57,519 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 06:01:57,520 INFO L375 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 06:01:57,520 INFO L424 AbstractCegarLoop]: === Iteration 4 === [idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 06:01:57,520 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 06:01:57,520 INFO L82 PathProgramCache]: Analyzing trace with hash 313120041, now seen corresponding path program 1 times [2018-11-10 06:01:57,520 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 06:01:57,521 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 06:01:57,521 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 06:01:57,521 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 06:01:57,521 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 06:01:57,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 06:01:57,549 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2018-11-10 06:01:57,550 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 06:01:57,550 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-10 06:01:57,550 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-10 06:01:57,550 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-10 06:01:57,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-10 06:01:57,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-10 06:01:57,550 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand 4 states. [2018-11-10 06:01:57,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 06:01:57,562 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2018-11-10 06:01:57,563 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-10 06:01:57,563 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2018-11-10 06:01:57,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 06:01:57,564 INFO L225 Difference]: With dead ends: 28 [2018-11-10 06:01:57,564 INFO L226 Difference]: Without dead ends: 27 [2018-11-10 06:01:57,564 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-10 06:01:57,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-11-10 06:01:57,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-11-10 06:01:57,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-11-10 06:01:57,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2018-11-10 06:01:57,569 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 36 [2018-11-10 06:01:57,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 06:01:57,570 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2018-11-10 06:01:57,570 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-10 06:01:57,570 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2018-11-10 06:01:57,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-11-10 06:01:57,571 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 06:01:57,571 INFO L375 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 06:01:57,571 INFO L424 AbstractCegarLoop]: === Iteration 5 === [idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 06:01:57,571 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 06:01:57,572 INFO L82 PathProgramCache]: Analyzing trace with hash 1116786735, now seen corresponding path program 1 times [2018-11-10 06:01:57,572 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 06:01:57,572 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 06:01:57,573 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 06:01:57,575 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 06:01:57,575 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 06:01:57,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 06:01:57,611 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2018-11-10 06:01:57,611 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 06:01:57,612 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-10 06:01:57,612 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-10 06:01:57,612 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-10 06:01:57,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-10 06:01:57,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-10 06:01:57,613 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand 3 states. [2018-11-10 06:01:57,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 06:01:57,619 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2018-11-10 06:01:57,619 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-10 06:01:57,619 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 37 [2018-11-10 06:01:57,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 06:01:57,619 INFO L225 Difference]: With dead ends: 27 [2018-11-10 06:01:57,619 INFO L226 Difference]: Without dead ends: 0 [2018-11-10 06:01:57,620 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 [2018-11-10 06:01:57,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-10 06:01:57,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-10 06:01:57,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-10 06:01:57,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-10 06:01:57,621 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 37 [2018-11-10 06:01:57,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 06:01:57,621 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-10 06:01:57,621 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-10 06:01:57,621 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-10 06:01:57,621 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-10 06:01:57,624 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-10 06:01:57,673 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-10 06:01:57,673 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-10 06:01:57,673 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-10 06:01:57,673 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-10 06:01:57,673 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-10 06:01:57,673 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-10 06:01:57,673 INFO L425 ceAbstractionStarter]: For program point L15(line 15) no Hoare annotation was computed. [2018-11-10 06:01:57,674 INFO L425 ceAbstractionStarter]: For program point L14(lines 14 16) no Hoare annotation was computed. [2018-11-10 06:01:57,674 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 11 17) the Hoare annotation is: true [2018-11-10 06:01:57,674 INFO L421 ceAbstractionStarter]: At program point L13(line 13) the Hoare annotation is: (let ((.cse0 (* 2 main_~input~0))) (and (<= .cse0 4294967294) (<= 0 (+ .cse0 4294967296)))) [2018-11-10 06:01:57,674 INFO L425 ceAbstractionStarter]: For program point L13-1(line 13) no Hoare annotation was computed. [2018-11-10 06:01:57,674 INFO L425 ceAbstractionStarter]: For program point L14-2(lines 11 17) no Hoare annotation was computed. [2018-11-10 06:01:57,674 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 11 17) no Hoare annotation was computed. [2018-11-10 06:01:57,674 INFO L425 ceAbstractionStarter]: For program point idFINAL(lines 4 9) no Hoare annotation was computed. [2018-11-10 06:01:57,674 INFO L425 ceAbstractionStarter]: For program point idEXIT(lines 4 9) no Hoare annotation was computed. [2018-11-10 06:01:57,675 INFO L428 ceAbstractionStarter]: At program point idENTRY(lines 4 9) the Hoare annotation is: true [2018-11-10 06:01:57,675 INFO L425 ceAbstractionStarter]: For program point idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 6) no Hoare annotation was computed. [2018-11-10 06:01:57,675 INFO L425 ceAbstractionStarter]: For program point idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 6) no Hoare annotation was computed. [2018-11-10 06:01:57,675 INFO L425 ceAbstractionStarter]: For program point L7(line 7) no Hoare annotation was computed. [2018-11-10 06:01:57,675 INFO L421 ceAbstractionStarter]: At program point L6(line 6) the Hoare annotation is: (let ((.cse0 (* 2 |id_#in~x|))) (or (< (+ .cse0 4294967296) 0) (< 4294967294 .cse0) (let ((.cse1 (* 2 id_~x))) (and (<= 0 (+ .cse1 4294967296)) (not (= id_~x 0)) (<= .cse1 4294967294))))) [2018-11-10 06:01:57,675 INFO L425 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-11-10 06:01:57,675 INFO L425 ceAbstractionStarter]: For program point L6-1(line 6) no Hoare annotation was computed. [2018-11-10 06:01:57,675 INFO L425 ceAbstractionStarter]: For program point L6-2(line 6) no Hoare annotation was computed. [2018-11-10 06:01:57,676 INFO L425 ceAbstractionStarter]: For program point L6-3(line 6) no Hoare annotation was computed. [2018-11-10 06:01:57,678 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 06:01:57 BoogieIcfgContainer [2018-11-10 06:01:57,678 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-10 06:01:57,678 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-10 06:01:57,678 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-10 06:01:57,678 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-10 06:01:57,679 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 06:01:56" (3/4) ... [2018-11-10 06:01:57,683 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-10 06:01:57,688 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-10 06:01:57,688 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-10 06:01:57,688 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure id [2018-11-10 06:01:57,691 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2018-11-10 06:01:57,691 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-11-10 06:01:57,691 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-10 06:01:57,718 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_08b4fa59-cd0f-44e8-9dc7-700f8ccc0fc7/bin-2019/utaipan/witness.graphml [2018-11-10 06:01:57,718 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-10 06:01:57,719 INFO L168 Benchmark]: Toolchain (without parser) took 1849.81 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 153.6 MB). Free memory was 953.8 MB in the beginning and 983.8 MB in the end (delta: -30.0 MB). Peak memory consumption was 123.6 MB. Max. memory is 11.5 GB. [2018-11-10 06:01:57,720 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 980.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 06:01:57,720 INFO L168 Benchmark]: CACSL2BoogieTranslator took 126.80 ms. Allocated memory is still 1.0 GB. Free memory was 953.8 MB in the beginning and 942.9 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 11.5 GB. [2018-11-10 06:01:57,721 INFO L168 Benchmark]: Boogie Procedure Inliner took 16.83 ms. Allocated memory is still 1.0 GB. Free memory is still 942.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 06:01:57,721 INFO L168 Benchmark]: Boogie Preprocessor took 14.99 ms. Allocated memory is still 1.0 GB. Free memory is still 942.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 06:01:57,721 INFO L168 Benchmark]: RCFGBuilder took 225.95 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 153.6 MB). Free memory was 942.9 MB in the beginning and 1.1 GB in the end (delta: -196.4 MB). Peak memory consumption was 22.6 MB. Max. memory is 11.5 GB. [2018-11-10 06:01:57,722 INFO L168 Benchmark]: TraceAbstraction took 1421.23 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 987.2 MB in the end (delta: 152.1 MB). Peak memory consumption was 152.1 MB. Max. memory is 11.5 GB. [2018-11-10 06:01:57,722 INFO L168 Benchmark]: Witness Printer took 40.37 ms. Allocated memory is still 1.2 GB. Free memory was 987.2 MB in the beginning and 983.8 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. [2018-11-10 06:01:57,725 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 980.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 126.80 ms. Allocated memory is still 1.0 GB. Free memory was 953.8 MB in the beginning and 942.9 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 16.83 ms. Allocated memory is still 1.0 GB. Free memory is still 942.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 14.99 ms. Allocated memory is still 1.0 GB. Free memory is still 942.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 225.95 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 153.6 MB). Free memory was 942.9 MB in the beginning and 1.1 GB in the end (delta: -196.4 MB). Peak memory consumption was 22.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1421.23 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 987.2 MB in the end (delta: 152.1 MB). Peak memory consumption was 152.1 MB. Max. memory is 11.5 GB. * Witness Printer took 40.37 ms. Allocated memory is still 1.2 GB. Free memory was 987.2 MB in the beginning and 983.8 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 6]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 6]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 24 locations, 2 error locations. SAFE Result, 1.3s OverallTime, 5 OverallIterations, 5 TraceHistogramMax, 0.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 81 SDtfs, 65 SDslu, 179 SDs, 0 SdLazy, 53 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 43 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.2s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.8913043478260871 AbsIntWeakeningRatio, 0.5217391304347826 AbsIntAvgWeakeningVarsNumRemoved, 1.3043478260869565 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 9 PreInvPairs, 9 NumberOfFragments, 50 HoareAnnotationTreeSize, 9 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 12 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 139 NumberOfCodeBlocks, 139 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 134 ConstructedInterpolants, 0 QuantifiedInterpolants, 5308 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 107/111 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...