./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/float-benchs/filter_iir_true-unreach-call.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_194dfe99-171d-42a4-8e3f-ca549ae6adcb/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_194dfe99-171d-42a4-8e3f-ca549ae6adcb/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_194dfe99-171d-42a4-8e3f-ca549ae6adcb/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_194dfe99-171d-42a4-8e3f-ca549ae6adcb/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/filter_iir_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_194dfe99-171d-42a4-8e3f-ca549ae6adcb/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_194dfe99-171d-42a4-8e3f-ca549ae6adcb/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 4d8de78cb0edef97ecd7b2050e9bc61ccb30afeb .................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_194dfe99-171d-42a4-8e3f-ca549ae6adcb/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_194dfe99-171d-42a4-8e3f-ca549ae6adcb/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_194dfe99-171d-42a4-8e3f-ca549ae6adcb/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_194dfe99-171d-42a4-8e3f-ca549ae6adcb/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/filter_iir_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_194dfe99-171d-42a4-8e3f-ca549ae6adcb/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_194dfe99-171d-42a4-8e3f-ca549ae6adcb/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 4d8de78cb0edef97ecd7b2050e9bc61ccb30afeb ................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-5842f4b [2018-11-18 08:51:49,479 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 08:51:49,480 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 08:51:49,487 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 08:51:49,487 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 08:51:49,488 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 08:51:49,489 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 08:51:49,490 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 08:51:49,491 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 08:51:49,492 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 08:51:49,492 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 08:51:49,492 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 08:51:49,493 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 08:51:49,494 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 08:51:49,494 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 08:51:49,495 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 08:51:49,495 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 08:51:49,497 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 08:51:49,498 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 08:51:49,499 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 08:51:49,500 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 08:51:49,500 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 08:51:49,502 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 08:51:49,502 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 08:51:49,502 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 08:51:49,503 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 08:51:49,504 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 08:51:49,504 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 08:51:49,505 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 08:51:49,506 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 08:51:49,506 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 08:51:49,506 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 08:51:49,506 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 08:51:49,506 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 08:51:49,507 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 08:51:49,507 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 08:51:49,507 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_194dfe99-171d-42a4-8e3f-ca549ae6adcb/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-11-18 08:51:49,518 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 08:51:49,518 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 08:51:49,518 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 08:51:49,518 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-18 08:51:49,519 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-18 08:51:49,519 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-18 08:51:49,519 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-18 08:51:49,519 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-18 08:51:49,519 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-18 08:51:49,519 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-18 08:51:49,519 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-18 08:51:49,519 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-18 08:51:49,519 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-18 08:51:49,520 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 08:51:49,520 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 08:51:49,520 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 08:51:49,520 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 08:51:49,520 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 08:51:49,520 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 08:51:49,521 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 08:51:49,521 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 08:51:49,521 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 08:51:49,521 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 08:51:49,521 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 08:51:49,521 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 08:51:49,521 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 08:51:49,521 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 08:51:49,521 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 08:51:49,522 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 08:51:49,522 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 08:51:49,522 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 08:51:49,522 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 08:51:49,522 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 08:51:49,522 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-18 08:51:49,522 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 08:51:49,522 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 08:51:49,522 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-18 08:51:49,522 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_194dfe99-171d-42a4-8e3f-ca549ae6adcb/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 -> 4d8de78cb0edef97ecd7b2050e9bc61ccb30afeb [2018-11-18 08:51:49,543 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 08:51:49,551 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 08:51:49,553 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 08:51:49,554 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 08:51:49,554 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 08:51:49,554 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_194dfe99-171d-42a4-8e3f-ca549ae6adcb/bin-2019/utaipan/../../sv-benchmarks/c/float-benchs/filter_iir_true-unreach-call.c [2018-11-18 08:51:49,590 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_194dfe99-171d-42a4-8e3f-ca549ae6adcb/bin-2019/utaipan/data/417a43733/bf924e52c18a410b8382442e2b9014da/FLAG104badee5 [2018-11-18 08:51:50,005 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 08:51:50,006 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_194dfe99-171d-42a4-8e3f-ca549ae6adcb/sv-benchmarks/c/float-benchs/filter_iir_true-unreach-call.c [2018-11-18 08:51:50,012 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_194dfe99-171d-42a4-8e3f-ca549ae6adcb/bin-2019/utaipan/data/417a43733/bf924e52c18a410b8382442e2b9014da/FLAG104badee5 [2018-11-18 08:51:50,021 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_194dfe99-171d-42a4-8e3f-ca549ae6adcb/bin-2019/utaipan/data/417a43733/bf924e52c18a410b8382442e2b9014da [2018-11-18 08:51:50,023 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 08:51:50,024 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 08:51:50,024 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 08:51:50,025 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 08:51:50,027 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 08:51:50,027 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:51:50" (1/1) ... [2018-11-18 08:51:50,029 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e18d399 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:51:50, skipping insertion in model container [2018-11-18 08:51:50,029 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:51:50" (1/1) ... [2018-11-18 08:51:50,035 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 08:51:50,049 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 08:51:50,169 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 08:51:50,180 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 08:51:50,196 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 08:51:50,206 INFO L195 MainTranslator]: Completed translation [2018-11-18 08:51:50,207 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:51:50 WrapperNode [2018-11-18 08:51:50,207 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 08:51:50,207 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 08:51:50,207 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 08:51:50,207 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 08:51:50,212 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:51:50" (1/1) ... [2018-11-18 08:51:50,218 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:51:50" (1/1) ... [2018-11-18 08:51:50,257 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 08:51:50,258 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 08:51:50,258 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 08:51:50,258 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 08:51:50,263 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:51:50" (1/1) ... [2018-11-18 08:51:50,264 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:51:50" (1/1) ... [2018-11-18 08:51:50,265 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:51:50" (1/1) ... [2018-11-18 08:51:50,265 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:51:50" (1/1) ... [2018-11-18 08:51:50,273 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:51:50" (1/1) ... [2018-11-18 08:51:50,277 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:51:50" (1/1) ... [2018-11-18 08:51:50,278 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:51:50" (1/1) ... [2018-11-18 08:51:50,279 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 08:51:50,279 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 08:51:50,279 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 08:51:50,279 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 08:51:50,280 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:51:50" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_194dfe99-171d-42a4-8e3f-ca549ae6adcb/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 [2018-11-18 08:51:50,312 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2018-11-18 08:51:50,312 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 08:51:50,312 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 08:51:50,313 INFO L130 BoogieDeclarations]: Found specification of procedure iir4 [2018-11-18 08:51:50,313 INFO L138 BoogieDeclarations]: Found implementation of procedure iir4 [2018-11-18 08:51:50,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-11-18 08:51:50,313 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 08:51:50,313 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 08:51:50,313 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 08:51:50,313 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 08:51:50,313 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 08:51:50,313 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-18 08:51:50,314 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-18 08:51:50,314 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2018-11-18 08:51:50,546 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 08:51:50,546 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:51:50 BoogieIcfgContainer [2018-11-18 08:51:50,547 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 08:51:50,547 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 08:51:50,547 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 08:51:50,550 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 08:51:50,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:51:50" (1/3) ... [2018-11-18 08:51:50,550 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37ba1eb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:51:50, skipping insertion in model container [2018-11-18 08:51:50,551 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:51:50" (2/3) ... [2018-11-18 08:51:50,551 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37ba1eb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:51:50, skipping insertion in model container [2018-11-18 08:51:50,551 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:51:50" (3/3) ... [2018-11-18 08:51:50,552 INFO L112 eAbstractionObserver]: Analyzing ICFG filter_iir_true-unreach-call.c [2018-11-18 08:51:50,560 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 08:51:50,567 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 08:51:50,579 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 08:51:50,602 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 08:51:50,602 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 08:51:50,602 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 08:51:50,603 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 08:51:50,603 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 08:51:50,603 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 08:51:50,603 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 08:51:50,603 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 08:51:50,613 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2018-11-18 08:51:50,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-11-18 08:51:50,617 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 08:51:50,618 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 08:51:50,619 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 08:51:50,622 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:51:50,623 INFO L82 PathProgramCache]: Analyzing trace with hash 940251281, now seen corresponding path program 1 times [2018-11-18 08:51:50,624 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 08:51:50,659 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:51:50,660 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 08:51:50,660 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:51:50,660 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 08:51:50,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:51:50,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:51:50,805 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-18 08:51:50,825 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: IntegerLiteral 26 could not be translated for associated CType ARRAY#_2_~DOUBLE# [2018-11-18 08:51:50,826 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: IntegerLiteral 36 could not be translated for associated CType ARRAY#_2_~DOUBLE# [2018-11-18 08:51:50,826 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: IntegerLiteral 33 could not be translated for associated CType ARRAY#_2_~DOUBLE# [2018-11-18 08:51:50,827 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: IntegerLiteral 35 could not be translated for associated CType ARRAY#_3_~DOUBLE# [2018-11-18 08:51:50,827 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: IntegerLiteral 51 could not be translated for associated CType ARRAY#_3_~DOUBLE# [2018-11-18 08:51:50,827 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: IntegerLiteral 30 could not be translated for associated CType ARRAY#_3_~DOUBLE# [2018-11-18 08:51:50,827 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: IntegerLiteral 37 could not be translated for associated CType ARRAY#_3_~DOUBLE# [2018-11-18 08:51:50,828 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: IntegerLiteral 43 could not be translated for associated CType ARRAY#_2_~DOUBLE# [2018-11-18 08:51:50,839 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 08:51:50 BoogieIcfgContainer [2018-11-18 08:51:50,839 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 08:51:50,840 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 08:51:50,840 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 08:51:50,840 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 08:51:50,840 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:51:50" (3/4) ... [2018-11-18 08:51:50,843 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-18 08:51:50,843 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 08:51:50,843 INFO L168 Benchmark]: Toolchain (without parser) took 819.64 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 961.9 MB in the beginning and 1.1 GB in the end (delta: -116.2 MB). Peak memory consumption was 20.2 MB. Max. memory is 11.5 GB. [2018-11-18 08:51:50,844 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 982.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 08:51:50,845 INFO L168 Benchmark]: CACSL2BoogieTranslator took 182.33 ms. Allocated memory is still 1.0 GB. Free memory was 961.9 MB in the beginning and 945.8 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2018-11-18 08:51:50,845 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.39 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -185.2 MB). Peak memory consumption was 14.4 MB. Max. memory is 11.5 GB. [2018-11-18 08:51:50,846 INFO L168 Benchmark]: Boogie Preprocessor took 21.44 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 08:51:50,846 INFO L168 Benchmark]: RCFGBuilder took 267.44 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: 27.7 MB). Peak memory consumption was 27.7 MB. Max. memory is 11.5 GB. [2018-11-18 08:51:50,846 INFO L168 Benchmark]: TraceAbstraction took 292.29 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: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 11.5 GB. [2018-11-18 08:51:50,847 INFO L168 Benchmark]: Witness Printer took 2.96 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 08:51:50,849 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 982.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 182.33 ms. Allocated memory is still 1.0 GB. Free memory was 961.9 MB in the beginning and 945.8 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 50.39 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -185.2 MB). Peak memory consumption was 14.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 21.44 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 267.44 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: 27.7 MB). Peak memory consumption was 27.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 292.29 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: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 11.5 GB. * Witness Printer took 2.96 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IntegerLiteral 26 could not be translated for associated CType ARRAY#_2_~DOUBLE# - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IntegerLiteral 36 could not be translated for associated CType ARRAY#_2_~DOUBLE# - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IntegerLiteral 33 could not be translated for associated CType ARRAY#_2_~DOUBLE# - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IntegerLiteral 35 could not be translated for associated CType ARRAY#_3_~DOUBLE# - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IntegerLiteral 51 could not be translated for associated CType ARRAY#_3_~DOUBLE# - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IntegerLiteral 30 could not be translated for associated CType ARRAY#_3_~DOUBLE# - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IntegerLiteral 37 could not be translated for associated CType ARRAY#_3_~DOUBLE# - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IntegerLiteral 43 could not be translated for associated CType ARRAY#_2_~DOUBLE# * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 8]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 49, overapproximation of to_real at line 11, overapproximation of someBinaryArithmeticDOUBLEoperation at line 23. Possible FailurePath: [L11] FCALL double A1[3] = { 1, 0.5179422053046, 1.0 }; [L12] FCALL double b1[2] = { 1.470767736573, 0.5522073405779 }; [L13] FCALL double A2[3] = { 1, 1.633101801841, 1.0 }; [L14] FCALL double b2[2] = { 1.742319554830, 0.820939679242 }; [L16] FCALL double D1[2], D2[2]; [L17] FCALL double P, X; VAL [\old(A1)=null, \old(A1)=null, \old(A2)=null, \old(A2)=null, \old(b1)=null, \old(b1)=null, \old(b2)=null, \old(b2)=null, \old(D1)=38, \old(D1)=31, \old(D2)=40, \old(D2)=48, \old(P)=44, \old(P)=56, \old(X)=29, \old(X)=52, A1={39:0}, A2={49:0}, b1={42:0}, b2={34:0}, D1={32:0}, D2={45:0}, P={27:0}, X={54:0}] [L38] FCALL D1[0] = 0. [L38] FCALL D1[1] = 0. [L39] FCALL D2[0] = 0. [L39] FCALL D2[1] = 0. [L40] FCALL P = 0. VAL [A1={39:0}, A2={49:0}, b1={42:0}, b2={34:0}, D1={32:0}, D2={45:0}, P={27:0}, X={54:0}] [L42] COND TRUE 1 [L44] FCALL X = __VERIFIER_nondet_double() [L45] EXPR, FCALL \read(X) [L45] X >= -10. && X <= 10. [L45] EXPR, FCALL \read(X) [L45] X >= -10. && X <= 10. VAL [\read(X)=53, \read(X)=53, A1={39:0}, A2={49:0}, b1={42:0}, b2={34:0}, D1={32:0}, D2={45:0}, P={27:0}, X={54:0}, X >= -10. && X <= 10.=1] [L47] CALL iir4(&X, &P) VAL [A1={39:0}, A2={49:0}, b1={42:0}, b2={34:0}, D1={32:0}, D2={45:0}, P={27:0}, x={54:0}, X={54:0}, y={27:0}] [L21] double x1, y1, t1, t2; [L23] EXPR, FCALL \read(*x) [L23] x1 = 0.0117749388721091 * *x [L25] EXPR, FCALL b1[0] [L25] EXPR, FCALL D1[0] [L25] EXPR, FCALL b1[1] [L25] EXPR, FCALL D1[1] [L25] t1 = x1 + b1[0]*D1[0] - b1[1]*D1[1] [L26] EXPR, FCALL A1[0] [L26] EXPR, FCALL A1[1] [L26] EXPR, FCALL D1[0] [L26] EXPR, FCALL A1[2] [L26] EXPR, FCALL D1[1] [L26] y1 = A1[0]*t1 - A1[1]*D1[0] + A1[2]*D1[1] [L27] EXPR, FCALL D1[0] [L27] FCALL D1[1] = D1[0] [L28] FCALL D1[0] = t1 [L30] EXPR, FCALL b2[0] [L30] EXPR, FCALL D2[0] [L30] EXPR, FCALL b2[1] [L30] EXPR, FCALL D2[1] [L30] t2 = y1 + b2[0]*D2[0] - b2[1]*D2[1] [L31] EXPR, FCALL A2[0] [L31] EXPR, FCALL A2[1] [L31] EXPR, FCALL D2[0] [L31] EXPR, FCALL A2[2] [L31] EXPR, FCALL D2[1] [L31] FCALL *y = A2[0]*t2 - A2[1]*D2[0] + A2[2]*D2[1] [L32] EXPR, FCALL D2[0] [L32] FCALL D2[1] = D2[0] [L33] RET, FCALL D2[0] = t2 VAL [A1={39:0}, A2={49:0}, b1={42:0}, b2={34:0}, D1={32:0}, D2={45:0}, P={27:0}, t1=25, t2=50, x={54:0}, X={54:0}, x={54:0}, y={27:0}, y={27:0}] [L47] iir4(&X, &P) VAL [A1={39:0}, A2={49:0}, b1={42:0}, b2={34:0}, D1={32:0}, D2={45:0}, P={27:0}, X={54:0}] [L49] EXPR, FCALL \read(P) [L49] EXPR P >= -1e30 && P <= 1e30 [L49] EXPR, FCALL \read(P) [L49] EXPR P >= -1e30 && P <= 1e30 VAL [\read(P)=28, \read(P)=28, A1={39:0}, A2={49:0}, b1={42:0}, b2={34:0}, D1={32:0}, D2={45:0}, P={27:0}, P >= -1e30 && P <= 1e30=0, X={54:0}] [L49] CALL __VERIFIER_assert(P >= -1e30 && P <= 1e30) VAL [\old(cond)=0, A1={39:0}, A2={49:0}, b1={42:0}, b2={34:0}, D1={32:0}, D2={45:0}, P={27:0}, X={54:0}] [L8] COND TRUE !(cond) VAL [\old(cond)=0, A1={39:0}, A2={49:0}, b1={42:0}, b2={34:0}, cond=0, D1={32:0}, D2={45:0}, P={27:0}, X={54:0}] [L8] __VERIFIER_error() VAL [\old(cond)=0, A1={39:0}, A2={49:0}, b1={42:0}, b2={34:0}, cond=0, D1={32:0}, D2={45:0}, P={27:0}, X={54:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 29 locations, 1 error locations. UNSAFE Result, 0.2s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.23-5842f4b [2018-11-18 08:51:52,214 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 08:51:52,216 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 08:51:52,224 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 08:51:52,224 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 08:51:52,225 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 08:51:52,226 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 08:51:52,227 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 08:51:52,228 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 08:51:52,228 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 08:51:52,229 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 08:51:52,229 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 08:51:52,230 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 08:51:52,231 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 08:51:52,232 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 08:51:52,232 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 08:51:52,233 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 08:51:52,234 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 08:51:52,236 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 08:51:52,237 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 08:51:52,237 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 08:51:52,238 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 08:51:52,240 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 08:51:52,240 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 08:51:52,240 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 08:51:52,241 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 08:51:52,242 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 08:51:52,242 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 08:51:52,243 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 08:51:52,244 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 08:51:52,244 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 08:51:52,244 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 08:51:52,244 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 08:51:52,244 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 08:51:52,245 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 08:51:52,245 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 08:51:52,246 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_194dfe99-171d-42a4-8e3f-ca549ae6adcb/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-11-18 08:51:52,255 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 08:51:52,255 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 08:51:52,256 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 08:51:52,256 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-18 08:51:52,256 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-18 08:51:52,256 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-18 08:51:52,256 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-18 08:51:52,257 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-18 08:51:52,257 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-18 08:51:52,257 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-18 08:51:52,257 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 08:51:52,257 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 08:51:52,258 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 08:51:52,258 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 08:51:52,258 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 08:51:52,259 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 08:51:52,259 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 08:51:52,259 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-18 08:51:52,260 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-18 08:51:52,260 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 08:51:52,260 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 08:51:52,260 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 08:51:52,260 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 08:51:52,260 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 08:51:52,260 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 08:51:52,261 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 08:51:52,261 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 08:51:52,261 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 08:51:52,261 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 08:51:52,261 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 08:51:52,261 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 08:51:52,261 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-11-18 08:51:52,261 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 08:51:52,261 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-11-18 08:51:52,262 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-18 08:51:52,262 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true 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_194dfe99-171d-42a4-8e3f-ca549ae6adcb/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 -> 4d8de78cb0edef97ecd7b2050e9bc61ccb30afeb [2018-11-18 08:51:52,293 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 08:51:52,302 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 08:51:52,304 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 08:51:52,305 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 08:51:52,306 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 08:51:52,306 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_194dfe99-171d-42a4-8e3f-ca549ae6adcb/bin-2019/utaipan/../../sv-benchmarks/c/float-benchs/filter_iir_true-unreach-call.c [2018-11-18 08:51:52,349 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_194dfe99-171d-42a4-8e3f-ca549ae6adcb/bin-2019/utaipan/data/2fbda9185/e9afc802154f4a56b744e4f2b99039ab/FLAG08563f977 [2018-11-18 08:51:52,668 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 08:51:52,669 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_194dfe99-171d-42a4-8e3f-ca549ae6adcb/sv-benchmarks/c/float-benchs/filter_iir_true-unreach-call.c [2018-11-18 08:51:52,674 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_194dfe99-171d-42a4-8e3f-ca549ae6adcb/bin-2019/utaipan/data/2fbda9185/e9afc802154f4a56b744e4f2b99039ab/FLAG08563f977 [2018-11-18 08:51:53,105 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_194dfe99-171d-42a4-8e3f-ca549ae6adcb/bin-2019/utaipan/data/2fbda9185/e9afc802154f4a56b744e4f2b99039ab [2018-11-18 08:51:53,108 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 08:51:53,108 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 08:51:53,109 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 08:51:53,109 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 08:51:53,112 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 08:51:53,113 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:51:53" (1/1) ... [2018-11-18 08:51:53,115 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1dd0158d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:51:53, skipping insertion in model container [2018-11-18 08:51:53,115 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:51:53" (1/1) ... [2018-11-18 08:51:53,122 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 08:51:53,137 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 08:51:53,266 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 08:51:53,284 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 08:51:53,306 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 08:51:53,319 INFO L195 MainTranslator]: Completed translation [2018-11-18 08:51:53,319 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:51:53 WrapperNode [2018-11-18 08:51:53,319 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 08:51:53,320 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 08:51:53,320 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 08:51:53,320 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 08:51:53,325 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:51:53" (1/1) ... [2018-11-18 08:51:53,333 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:51:53" (1/1) ... [2018-11-18 08:51:53,337 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 08:51:53,338 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 08:51:53,338 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 08:51:53,338 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 08:51:53,344 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:51:53" (1/1) ... [2018-11-18 08:51:53,344 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:51:53" (1/1) ... [2018-11-18 08:51:53,346 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:51:53" (1/1) ... [2018-11-18 08:51:53,347 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:51:53" (1/1) ... [2018-11-18 08:51:53,358 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:51:53" (1/1) ... [2018-11-18 08:51:53,405 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:51:53" (1/1) ... [2018-11-18 08:51:53,408 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:51:53" (1/1) ... [2018-11-18 08:51:53,410 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 08:51:53,411 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 08:51:53,411 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 08:51:53,411 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 08:51:53,412 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:51:53" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_194dfe99-171d-42a4-8e3f-ca549ae6adcb/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 [2018-11-18 08:51:53,458 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2018-11-18 08:51:53,458 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 08:51:53,459 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 08:51:53,459 INFO L130 BoogieDeclarations]: Found specification of procedure iir4 [2018-11-18 08:51:53,459 INFO L138 BoogieDeclarations]: Found implementation of procedure iir4 [2018-11-18 08:51:53,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE8 [2018-11-18 08:51:53,459 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 08:51:53,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2018-11-18 08:51:53,459 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 08:51:53,459 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 08:51:53,459 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 08:51:53,459 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 08:51:53,460 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-18 08:51:53,460 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-18 08:51:53,660 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-18 08:51:56,029 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-18 08:51:56,110 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-18 08:51:56,122 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-18 08:51:56,163 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 08:51:56,163 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:51:56 BoogieIcfgContainer [2018-11-18 08:51:56,163 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 08:51:56,164 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 08:51:56,164 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 08:51:56,165 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 08:51:56,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:51:53" (1/3) ... [2018-11-18 08:51:56,166 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6215491c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:51:56, skipping insertion in model container [2018-11-18 08:51:56,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:51:53" (2/3) ... [2018-11-18 08:51:56,166 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6215491c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:51:56, skipping insertion in model container [2018-11-18 08:51:56,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:51:56" (3/3) ... [2018-11-18 08:51:56,167 INFO L112 eAbstractionObserver]: Analyzing ICFG filter_iir_true-unreach-call.c [2018-11-18 08:51:56,173 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 08:51:56,178 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 08:51:56,186 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 08:51:56,205 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 08:51:56,206 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 08:51:56,206 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 08:51:56,206 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 08:51:56,206 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 08:51:56,206 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 08:51:56,207 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 08:51:56,207 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 08:51:56,207 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 08:51:56,217 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2018-11-18 08:51:56,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-11-18 08:51:56,221 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 08:51:56,222 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 08:51:56,223 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 08:51:56,226 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:51:56,227 INFO L82 PathProgramCache]: Analyzing trace with hash 940251281, now seen corresponding path program 1 times [2018-11-18 08:51:56,230 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 08:51:56,230 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_194dfe99-171d-42a4-8e3f-ca549ae6adcb/bin-2019/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2018-11-18 08:51:56,235 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 08:51:58,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:51:59,089 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 08:51:59,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 08:51:59,101 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 08:51:59,142 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 08:51:59,142 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 08:51:59,144 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 08:51:59,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 08:51:59,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 08:51:59,154 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 2 states. [2018-11-18 08:51:59,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 08:51:59,164 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2018-11-18 08:51:59,164 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 08:51:59,166 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 20 [2018-11-18 08:51:59,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 08:51:59,171 INFO L225 Difference]: With dead ends: 29 [2018-11-18 08:51:59,171 INFO L226 Difference]: Without dead ends: 0 [2018-11-18 08:51:59,174 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 08:51:59,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-18 08:51:59,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-18 08:51:59,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-18 08:51:59,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-18 08:51:59,193 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2018-11-18 08:51:59,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 08:51:59,193 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 08:51:59,193 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 08:51:59,193 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-18 08:51:59,194 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-18 08:51:59,196 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-18 08:51:59,236 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-11-18 08:51:59,236 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-11-18 08:51:59,236 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-18 08:51:59,236 INFO L425 ceAbstractionStarter]: For program point iir4FINAL(lines 19 34) no Hoare annotation was computed. [2018-11-18 08:51:59,236 INFO L425 ceAbstractionStarter]: For program point iir4EXIT(lines 19 34) no Hoare annotation was computed. [2018-11-18 08:51:59,236 INFO L428 ceAbstractionStarter]: At program point iir4ENTRY(lines 19 34) the Hoare annotation is: true [2018-11-18 08:51:59,236 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-18 08:51:59,237 INFO L421 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: false [2018-11-18 08:51:59,237 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-18 08:51:59,237 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-18 08:51:59,237 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 36 52) no Hoare annotation was computed. [2018-11-18 08:51:59,237 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 36 52) no Hoare annotation was computed. [2018-11-18 08:51:59,237 INFO L425 ceAbstractionStarter]: For program point L42-1(lines 42 50) no Hoare annotation was computed. [2018-11-18 08:51:59,237 INFO L428 ceAbstractionStarter]: At program point L42-3(lines 42 50) the Hoare annotation is: true [2018-11-18 08:51:59,237 INFO L425 ceAbstractionStarter]: For program point L42-4(lines 42 50) no Hoare annotation was computed. [2018-11-18 08:51:59,237 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 36 52) the Hoare annotation is: true [2018-11-18 08:51:59,238 INFO L425 ceAbstractionStarter]: For program point L49(line 49) no Hoare annotation was computed. [2018-11-18 08:51:59,238 INFO L428 ceAbstractionStarter]: At program point L47(line 47) the Hoare annotation is: true [2018-11-18 08:51:59,238 INFO L428 ceAbstractionStarter]: At program point L49-2(line 49) the Hoare annotation is: true [2018-11-18 08:51:59,238 INFO L425 ceAbstractionStarter]: For program point L47-1(line 47) no Hoare annotation was computed. [2018-11-18 08:51:59,238 INFO L425 ceAbstractionStarter]: For program point L49-3(line 49) no Hoare annotation was computed. [2018-11-18 08:51:59,238 INFO L425 ceAbstractionStarter]: For program point L45(line 45) no Hoare annotation was computed. [2018-11-18 08:51:59,238 INFO L425 ceAbstractionStarter]: For program point L45-2(line 45) no Hoare annotation was computed. [2018-11-18 08:51:59,238 INFO L428 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(line 8) the Hoare annotation is: true [2018-11-18 08:51:59,239 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2018-11-18 08:51:59,239 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(line 8) no Hoare annotation was computed. [2018-11-18 08:51:59,239 INFO L425 ceAbstractionStarter]: For program point L8(line 8) no Hoare annotation was computed. [2018-11-18 08:51:59,239 INFO L425 ceAbstractionStarter]: For program point L8-1(line 8) no Hoare annotation was computed. [2018-11-18 08:51:59,239 INFO L425 ceAbstractionStarter]: For program point L8-3(line 8) no Hoare annotation was computed. [2018-11-18 08:51:59,244 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 08:51:59 BoogieIcfgContainer [2018-11-18 08:51:59,244 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 08:51:59,244 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 08:51:59,244 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 08:51:59,244 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 08:51:59,245 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:51:56" (3/4) ... [2018-11-18 08:51:59,247 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-18 08:51:59,252 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-18 08:51:59,252 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure iir4 [2018-11-18 08:51:59,252 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-18 08:51:59,252 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2018-11-18 08:51:59,256 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 27 nodes and edges [2018-11-18 08:51:59,257 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2018-11-18 08:51:59,257 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2018-11-18 08:51:59,257 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-18 08:51:59,296 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_194dfe99-171d-42a4-8e3f-ca549ae6adcb/bin-2019/utaipan/witness.graphml [2018-11-18 08:51:59,296 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 08:51:59,297 INFO L168 Benchmark]: Toolchain (without parser) took 6189.08 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.2 MB). Free memory was 948.7 MB in the beginning and 1.1 GB in the end (delta: -102.1 MB). Peak memory consumption was 43.2 MB. Max. memory is 11.5 GB. [2018-11-18 08:51:59,298 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 08:51:59,298 INFO L168 Benchmark]: CACSL2BoogieTranslator took 210.58 ms. Allocated memory is still 1.0 GB. Free memory was 948.7 MB in the beginning and 932.5 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2018-11-18 08:51:59,298 INFO L168 Benchmark]: Boogie Procedure Inliner took 17.58 ms. Allocated memory is still 1.0 GB. Free memory is still 932.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 08:51:59,299 INFO L168 Benchmark]: Boogie Preprocessor took 72.83 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.2 MB). Free memory was 932.5 MB in the beginning and 1.1 GB in the end (delta: -201.0 MB). Peak memory consumption was 20.9 MB. Max. memory is 11.5 GB. [2018-11-18 08:51:59,299 INFO L168 Benchmark]: RCFGBuilder took 2752.53 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: 38.3 MB). Peak memory consumption was 38.3 MB. Max. memory is 11.5 GB. [2018-11-18 08:51:59,299 INFO L168 Benchmark]: TraceAbstraction took 3080.30 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: 44.6 MB). Peak memory consumption was 44.6 MB. Max. memory is 11.5 GB. [2018-11-18 08:51:59,299 INFO L168 Benchmark]: Witness Printer took 52.37 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 08:51:59,301 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 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 210.58 ms. Allocated memory is still 1.0 GB. Free memory was 948.7 MB in the beginning and 932.5 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 17.58 ms. Allocated memory is still 1.0 GB. Free memory is still 932.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 72.83 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.2 MB). Free memory was 932.5 MB in the beginning and 1.1 GB in the end (delta: -201.0 MB). Peak memory consumption was 20.9 MB. Max. memory is 11.5 GB. * RCFGBuilder took 2752.53 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: 38.3 MB). Peak memory consumption was 38.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3080.30 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: 44.6 MB). Peak memory consumption was 44.6 MB. Max. memory is 11.5 GB. * Witness Printer took 52.37 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: 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: 42]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 29 locations, 1 error locations. SAFE Result, 3.0s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 9 PreInvPairs, 9 NumberOfFragments, 9 HoareAnnotationTreeSize, 9 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 2.5s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 19 ConstructedInterpolants, 0 QuantifiedInterpolants, 361 SizeOfPredicates, 0 NumberOfNonLiveVariables, 110 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...