./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/loops/sum01_true-unreach-call_true-termination.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_b696f540-45f8-4b3e-9294-cbb0609ce06c/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_b696f540-45f8-4b3e-9294-cbb0609ce06c/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_b696f540-45f8-4b3e-9294-cbb0609ce06c/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_b696f540-45f8-4b3e-9294-cbb0609ce06c/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loops/sum01_true-unreach-call_true-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_b696f540-45f8-4b3e-9294-cbb0609ce06c/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_b696f540-45f8-4b3e-9294-cbb0609ce06c/bin-2019/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3ef497a13bffaa6a3ec01f2d87f935fee9ff2c5a ....................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-10-26 21:14:57,669 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 21:14:57,670 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 21:14:57,679 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 21:14:57,679 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 21:14:57,680 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 21:14:57,681 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 21:14:57,683 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 21:14:57,684 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 21:14:57,685 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 21:14:57,685 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 21:14:57,686 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 21:14:57,687 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 21:14:57,687 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 21:14:57,688 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 21:14:57,689 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 21:14:57,689 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 21:14:57,692 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 21:14:57,693 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 21:14:57,695 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 21:14:57,696 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 21:14:57,697 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 21:14:57,699 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 21:14:57,699 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 21:14:57,699 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 21:14:57,700 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 21:14:57,701 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 21:14:57,702 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 21:14:57,703 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 21:14:57,704 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 21:14:57,704 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 21:14:57,704 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-26 21:14:57,704 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-26 21:14:57,705 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-26 21:14:57,705 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-26 21:14:57,707 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-26 21:14:57,707 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_b696f540-45f8-4b3e-9294-cbb0609ce06c/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-10-26 21:14:57,718 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 21:14:57,718 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 21:14:57,719 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 21:14:57,719 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-26 21:14:57,719 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-26 21:14:57,719 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-26 21:14:57,720 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-26 21:14:57,720 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-26 21:14:57,720 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-26 21:14:57,720 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-26 21:14:57,720 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-26 21:14:57,721 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 21:14:57,721 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-26 21:14:57,721 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 21:14:57,722 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-26 21:14:57,723 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 21:14:57,723 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 21:14:57,723 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 21:14:57,724 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 21:14:57,724 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-26 21:14:57,724 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 21:14:57,724 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 21:14:57,724 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 21:14:57,725 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 21:14:57,725 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 21:14:57,725 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 21:14:57,725 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 21:14:57,725 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 21:14:57,725 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 21:14:57,726 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 21:14:57,726 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-26 21:14:57,726 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 21:14:57,726 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 21:14:57,726 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-26 21:14:57,726 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_b696f540-45f8-4b3e-9294-cbb0609ce06c/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 ! call(__VERIFIER_error())) ) 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 -> 3ef497a13bffaa6a3ec01f2d87f935fee9ff2c5a [2018-10-26 21:14:57,753 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 21:14:57,763 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 21:14:57,765 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 21:14:57,767 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 21:14:57,767 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 21:14:57,767 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_b696f540-45f8-4b3e-9294-cbb0609ce06c/bin-2019/utaipan/../../sv-benchmarks/c/loops/sum01_true-unreach-call_true-termination.i [2018-10-26 21:14:57,808 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b696f540-45f8-4b3e-9294-cbb0609ce06c/bin-2019/utaipan/data/1b51d27fd/2647e889e17f4c9f9bb54053c9e25bb0/FLAGec0389e9d [2018-10-26 21:14:58,183 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 21:14:58,186 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_b696f540-45f8-4b3e-9294-cbb0609ce06c/sv-benchmarks/c/loops/sum01_true-unreach-call_true-termination.i [2018-10-26 21:14:58,194 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b696f540-45f8-4b3e-9294-cbb0609ce06c/bin-2019/utaipan/data/1b51d27fd/2647e889e17f4c9f9bb54053c9e25bb0/FLAGec0389e9d [2018-10-26 21:14:58,209 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_b696f540-45f8-4b3e-9294-cbb0609ce06c/bin-2019/utaipan/data/1b51d27fd/2647e889e17f4c9f9bb54053c9e25bb0 [2018-10-26 21:14:58,212 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 21:14:58,214 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-10-26 21:14:58,215 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 21:14:58,215 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 21:14:58,225 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 21:14:58,226 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 09:14:58" (1/1) ... [2018-10-26 21:14:58,229 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@250b1434 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:14:58, skipping insertion in model container [2018-10-26 21:14:58,229 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 09:14:58" (1/1) ... [2018-10-26 21:14:58,237 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 21:14:58,251 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 21:14:58,362 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 21:14:58,365 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 21:14:58,376 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 21:14:58,387 INFO L193 MainTranslator]: Completed translation [2018-10-26 21:14:58,387 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:14:58 WrapperNode [2018-10-26 21:14:58,387 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 21:14:58,388 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 21:14:58,388 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 21:14:58,388 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 21:14:58,396 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:14:58" (1/1) ... [2018-10-26 21:14:58,400 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:14:58" (1/1) ... [2018-10-26 21:14:58,404 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 21:14:58,404 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 21:14:58,404 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 21:14:58,404 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 21:14:58,410 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:14:58" (1/1) ... [2018-10-26 21:14:58,410 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:14:58" (1/1) ... [2018-10-26 21:14:58,410 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:14:58" (1/1) ... [2018-10-26 21:14:58,411 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:14:58" (1/1) ... [2018-10-26 21:14:58,413 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:14:58" (1/1) ... [2018-10-26 21:14:58,417 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:14:58" (1/1) ... [2018-10-26 21:14:58,418 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:14:58" (1/1) ... [2018-10-26 21:14:58,419 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 21:14:58,419 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 21:14:58,419 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 21:14:58,419 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 21:14:58,420 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:14:58" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b696f540-45f8-4b3e-9294-cbb0609ce06c/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 [2018-10-26 21:14:58,516 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-26 21:14:58,516 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-26 21:14:58,516 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 21:14:58,517 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 21:14:58,517 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-26 21:14:58,517 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-26 21:14:58,517 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-10-26 21:14:58,517 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-10-26 21:14:58,853 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 21:14:58,854 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:14:58 BoogieIcfgContainer [2018-10-26 21:14:58,854 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 21:14:58,855 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 21:14:58,855 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 21:14:58,862 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 21:14:58,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 09:14:58" (1/3) ... [2018-10-26 21:14:58,870 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b023306 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 09:14:58, skipping insertion in model container [2018-10-26 21:14:58,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:14:58" (2/3) ... [2018-10-26 21:14:58,871 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b023306 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 09:14:58, skipping insertion in model container [2018-10-26 21:14:58,871 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:14:58" (3/3) ... [2018-10-26 21:14:58,872 INFO L112 eAbstractionObserver]: Analyzing ICFG sum01_true-unreach-call_true-termination.i [2018-10-26 21:14:58,890 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 21:14:58,896 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 21:14:58,930 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 21:14:58,978 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 21:14:58,986 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 21:14:58,986 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 21:14:58,986 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 21:14:58,986 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 21:14:58,986 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 21:14:58,986 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 21:14:58,986 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 21:14:59,005 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2018-10-26 21:14:59,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-10-26 21:14:59,022 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:14:59,023 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:14:59,024 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:14:59,029 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:14:59,038 INFO L82 PathProgramCache]: Analyzing trace with hash -1280988026, now seen corresponding path program 1 times [2018-10-26 21:14:59,040 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 21:14:59,092 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:14:59,092 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:14:59,092 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:14:59,092 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 21:14:59,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:14:59,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 21:14:59,153 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:14:59,153 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-26 21:14:59,153 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 21:14:59,158 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-26 21:14:59,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-26 21:14:59,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-26 21:14:59,173 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2018-10-26 21:14:59,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:14:59,193 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2018-10-26 21:14:59,193 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-26 21:14:59,197 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2018-10-26 21:14:59,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:14:59,205 INFO L225 Difference]: With dead ends: 31 [2018-10-26 21:14:59,205 INFO L226 Difference]: Without dead ends: 14 [2018-10-26 21:14:59,211 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-26 21:14:59,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-10-26 21:14:59,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-10-26 21:14:59,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-10-26 21:14:59,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-10-26 21:14:59,243 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 11 [2018-10-26 21:14:59,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:14:59,243 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2018-10-26 21:14:59,244 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-26 21:14:59,244 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2018-10-26 21:14:59,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-10-26 21:14:59,244 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:14:59,244 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:14:59,245 INFO L424 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:14:59,245 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:14:59,245 INFO L82 PathProgramCache]: Analyzing trace with hash -1336229576, now seen corresponding path program 1 times [2018-10-26 21:14:59,245 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 21:14:59,247 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:14:59,247 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:14:59,248 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:14:59,248 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 21:14:59,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:14:59,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 21:14:59,355 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:14:59,356 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-26 21:14:59,356 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 21:14:59,357 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 21:14:59,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 21:14:59,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-26 21:14:59,357 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 5 states. [2018-10-26 21:14:59,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:14:59,440 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2018-10-26 21:14:59,441 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-26 21:14:59,441 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2018-10-26 21:14:59,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:14:59,441 INFO L225 Difference]: With dead ends: 21 [2018-10-26 21:14:59,442 INFO L226 Difference]: Without dead ends: 16 [2018-10-26 21:14:59,442 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-26 21:14:59,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-10-26 21:14:59,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-10-26 21:14:59,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-10-26 21:14:59,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2018-10-26 21:14:59,446 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 12 [2018-10-26 21:14:59,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:14:59,446 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2018-10-26 21:14:59,446 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 21:14:59,446 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2018-10-26 21:14:59,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-26 21:14:59,447 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:14:59,447 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:14:59,447 INFO L424 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:14:59,448 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:14:59,448 INFO L82 PathProgramCache]: Analyzing trace with hash -214348638, now seen corresponding path program 1 times [2018-10-26 21:14:59,448 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 21:14:59,449 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:14:59,449 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:14:59,449 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:14:59,449 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 21:14:59,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:14:59,791 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 14 [2018-10-26 21:14:59,948 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 21:14:59,948 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 21:14:59,949 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-26 21:14:59,949 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 16 with the following transitions: [2018-10-26 21:14:59,951 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [12], [15], [17], [19], [25], [28], [30], [36], [37], [38], [40] [2018-10-26 21:14:59,990 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-26 21:14:59,990 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-26 21:15:00,267 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-26 21:15:00,268 INFO L272 AbstractInterpreter]: Visited 14 different actions 141 times. Merged at 4 different actions 64 times. Widened at 1 different actions 12 times. Found 1 fixpoints after 1 different actions. Largest state had 5 variables. [2018-10-26 21:15:00,298 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:15:00,299 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-26 21:15:00,299 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 21:15:00,299 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b696f540-45f8-4b3e-9294-cbb0609ce06c/bin-2019/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 21:15:00,306 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:15:00,306 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-26 21:15:00,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:15:00,338 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 21:15:00,654 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 21:15:00,654 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-26 21:15:01,121 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 21:15:01,148 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-26 21:15:01,149 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2018-10-26 21:15:01,149 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-26 21:15:01,149 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-26 21:15:01,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-26 21:15:01,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2018-10-26 21:15:01,150 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 13 states. [2018-10-26 21:15:01,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:15:01,358 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2018-10-26 21:15:01,359 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-26 21:15:01,359 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 15 [2018-10-26 21:15:01,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:15:01,359 INFO L225 Difference]: With dead ends: 28 [2018-10-26 21:15:01,360 INFO L226 Difference]: Without dead ends: 22 [2018-10-26 21:15:01,360 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=102, Invalid=404, Unknown=0, NotChecked=0, Total=506 [2018-10-26 21:15:01,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-10-26 21:15:01,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2018-10-26 21:15:01,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-10-26 21:15:01,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2018-10-26 21:15:01,367 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 15 [2018-10-26 21:15:01,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:15:01,367 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2018-10-26 21:15:01,367 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-26 21:15:01,367 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2018-10-26 21:15:01,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-10-26 21:15:01,368 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:15:01,368 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:15:01,368 INFO L424 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:15:01,368 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:15:01,368 INFO L82 PathProgramCache]: Analyzing trace with hash -1462115102, now seen corresponding path program 2 times [2018-10-26 21:15:01,369 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 21:15:01,369 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:15:01,369 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:15:01,369 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:15:01,370 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 21:15:01,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:15:01,601 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-10-26 21:15:01,601 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 21:15:01,601 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-26 21:15:01,601 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-10-26 21:15:01,601 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-26 21:15:01,602 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 21:15:01,602 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b696f540-45f8-4b3e-9294-cbb0609ce06c/bin-2019/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 21:15:01,616 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-26 21:15:01,617 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-10-26 21:15:01,629 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-10-26 21:15:01,629 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-26 21:15:01,631 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 21:15:01,916 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 21:15:01,916 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-26 21:15:02,274 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 21:15:02,290 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-26 21:15:02,290 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13, 13] total 29 [2018-10-26 21:15:02,291 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-26 21:15:02,291 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-26 21:15:02,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-26 21:15:02,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=695, Unknown=0, NotChecked=0, Total=812 [2018-10-26 21:15:02,292 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 18 states. [2018-10-26 21:15:02,716 WARN L179 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 15 [2018-10-26 21:15:02,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:15:02,764 INFO L93 Difference]: Finished difference Result 26 states and 27 transitions. [2018-10-26 21:15:02,764 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-26 21:15:02,764 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 21 [2018-10-26 21:15:02,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:15:02,764 INFO L225 Difference]: With dead ends: 26 [2018-10-26 21:15:02,764 INFO L226 Difference]: Without dead ends: 0 [2018-10-26 21:15:02,765 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=223, Invalid=1259, Unknown=0, NotChecked=0, Total=1482 [2018-10-26 21:15:02,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-26 21:15:02,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-26 21:15:02,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-26 21:15:02,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-26 21:15:02,766 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2018-10-26 21:15:02,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:15:02,766 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-26 21:15:02,766 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-10-26 21:15:02,766 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-26 21:15:02,766 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-26 21:15:02,770 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-10-26 21:15:02,943 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-10-26 21:15:02,944 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-10-26 21:15:02,944 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-10-26 21:15:02,944 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-10-26 21:15:02,944 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-10-26 21:15:02,944 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-10-26 21:15:02,944 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 11 18) the Hoare annotation is: true [2018-10-26 21:15:02,944 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 11 18) no Hoare annotation was computed. [2018-10-26 21:15:02,944 INFO L425 ceAbstractionStarter]: For program point L13(line 13) no Hoare annotation was computed. [2018-10-26 21:15:02,944 INFO L425 ceAbstractionStarter]: For program point L14-1(lines 14 16) no Hoare annotation was computed. [2018-10-26 21:15:02,944 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 11 18) no Hoare annotation was computed. [2018-10-26 21:15:02,944 INFO L425 ceAbstractionStarter]: For program point L14-3(lines 14 16) no Hoare annotation was computed. [2018-10-26 21:15:02,944 INFO L421 ceAbstractionStarter]: At program point L14-4(lines 14 16) the Hoare annotation is: (or (let ((.cse1 (* 2 main_~i~0)) (.cse0 (+ main_~sn~0 2))) (and (<= .cse0 .cse1) (<= .cse1 .cse0) (< main_~sn~0 (+ (* 2 main_~n~0) 1)))) (and (= main_~i~0 1) (= main_~sn~0 0))) [2018-10-26 21:15:02,945 INFO L421 ceAbstractionStarter]: At program point L14-5(lines 14 16) the Hoare annotation is: (or (let ((.cse0 (* 2 main_~n~0))) (and (<= .cse0 main_~sn~0) (< main_~sn~0 (+ .cse0 1)))) (= main_~sn~0 0)) [2018-10-26 21:15:02,945 INFO L428 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 4 9) the Hoare annotation is: true [2018-10-26 21:15:02,945 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6) no Hoare annotation was computed. [2018-10-26 21:15:02,945 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 4 9) no Hoare annotation was computed. [2018-10-26 21:15:02,945 INFO L425 ceAbstractionStarter]: For program point L6(line 6) no Hoare annotation was computed. [2018-10-26 21:15:02,945 INFO L425 ceAbstractionStarter]: For program point L5(lines 5 7) no Hoare annotation was computed. [2018-10-26 21:15:02,945 INFO L425 ceAbstractionStarter]: For program point L5-2(lines 4 9) no Hoare annotation was computed. [2018-10-26 21:15:02,959 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 09:15:02 BoogieIcfgContainer [2018-10-26 21:15:02,959 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 21:15:02,960 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-26 21:15:02,960 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-26 21:15:02,960 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-26 21:15:02,960 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:14:58" (3/4) ... [2018-10-26 21:15:02,964 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-10-26 21:15:02,970 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-10-26 21:15:02,970 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-10-26 21:15:02,970 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2018-10-26 21:15:02,973 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2018-10-26 21:15:02,974 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-10-26 21:15:02,975 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-10-26 21:15:03,010 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_b696f540-45f8-4b3e-9294-cbb0609ce06c/bin-2019/utaipan/witness.graphml [2018-10-26 21:15:03,011 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-26 21:15:03,012 INFO L168 Benchmark]: Toolchain (without parser) took 4798.47 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 163.6 MB). Free memory was 959.3 MB in the beginning and 1.1 GB in the end (delta: -154.4 MB). Peak memory consumption was 9.2 MB. Max. memory is 11.5 GB. [2018-10-26 21:15:03,013 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 21:15:03,013 INFO L168 Benchmark]: CACSL2BoogieTranslator took 172.60 ms. Allocated memory is still 1.0 GB. Free memory was 959.3 MB in the beginning and 948.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-10-26 21:15:03,013 INFO L168 Benchmark]: Boogie Procedure Inliner took 16.14 ms. Allocated memory is still 1.0 GB. Free memory is still 948.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 21:15:03,014 INFO L168 Benchmark]: Boogie Preprocessor took 14.72 ms. Allocated memory is still 1.0 GB. Free memory was 948.5 MB in the beginning and 945.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-10-26 21:15:03,014 INFO L168 Benchmark]: RCFGBuilder took 434.76 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 163.6 MB). Free memory was 945.8 MB in the beginning and 1.2 GB in the end (delta: -207.0 MB). Peak memory consumption was 20.1 MB. Max. memory is 11.5 GB. [2018-10-26 21:15:03,015 INFO L168 Benchmark]: TraceAbstraction took 4104.79 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 35.7 MB). Peak memory consumption was 35.7 MB. Max. memory is 11.5 GB. [2018-10-26 21:15:03,015 INFO L168 Benchmark]: Witness Printer took 51.24 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 11.5 GB. [2018-10-26 21:15:03,020 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 172.60 ms. Allocated memory is still 1.0 GB. Free memory was 959.3 MB in the beginning and 948.5 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 16.14 ms. Allocated memory is still 1.0 GB. Free memory is still 948.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 14.72 ms. Allocated memory is still 1.0 GB. Free memory was 948.5 MB in the beginning and 945.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 434.76 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 163.6 MB). Free memory was 945.8 MB in the beginning and 1.2 GB in the end (delta: -207.0 MB). Peak memory consumption was 20.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4104.79 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 35.7 MB). Peak memory consumption was 35.7 MB. Max. memory is 11.5 GB. * Witness Printer took 51.24 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 6]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ((sn + 2 <= 2 * i && 2 * i <= sn + 2) && sn < 2 * n + 1) || (i == 1 && sn == 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 20 locations, 1 error locations. SAFE Result, 3.9s OverallTime, 4 OverallIterations, 4 TraceHistogramMax, 0.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 55 SDtfs, 12 SDslu, 216 SDs, 0 SdLazy, 195 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 113 GetRequests, 47 SyntacticMatches, 4 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 468 ImplicationChecksByTransitivity, 2.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.3s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 12 PreInvPairs, 21 NumberOfFragments, 52 HoareAnnotationTreeSize, 12 FomulaSimplifications, 61 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 100 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 95 NumberOfCodeBlocks, 95 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 123 ConstructedInterpolants, 12 QuantifiedInterpolants, 17515 SizeOfPredicates, 8 NumberOfNonLiveVariables, 86 ConjunctsInSsa, 38 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 7/51 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...