./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_0682b.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_238e362a-f1b4-440c-9905-b49a723178d0/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_238e362a-f1b4-440c-9905-b49a723178d0/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_238e362a-f1b4-440c-9905-b49a723178d0/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_238e362a-f1b4-440c-9905-b49a723178d0/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_0682b.c -s /tmp/vcloud-vcloud-master/worker/working_dir_238e362a-f1b4-440c-9905-b49a723178d0/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_238e362a-f1b4-440c-9905-b49a723178d0/bin/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 a90ab4b5fd896d7fe8c91ee95d37e83b559389ba .................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_238e362a-f1b4-440c-9905-b49a723178d0/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_238e362a-f1b4-440c-9905-b49a723178d0/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_238e362a-f1b4-440c-9905-b49a723178d0/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_238e362a-f1b4-440c-9905-b49a723178d0/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_0682b.c -s /tmp/vcloud-vcloud-master/worker/working_dir_238e362a-f1b4-440c-9905-b49a723178d0/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_238e362a-f1b4-440c-9905-b49a723178d0/bin/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 a90ab4b5fd896d7fe8c91ee95d37e83b559389ba ................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: NullPointerException: null --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-10-22 11:21:25,299 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 11:21:25,300 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 11:21:25,309 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 11:21:25,309 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 11:21:25,310 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 11:21:25,311 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 11:21:25,312 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 11:21:25,314 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 11:21:25,314 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 11:21:25,315 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 11:21:25,316 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 11:21:25,316 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 11:21:25,317 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 11:21:25,318 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 11:21:25,318 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 11:21:25,319 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 11:21:25,320 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 11:21:25,321 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 11:21:25,322 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 11:21:25,324 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 11:21:25,324 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 11:21:25,325 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 11:21:25,326 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 11:21:25,328 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 11:21:25,328 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 11:21:25,328 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 11:21:25,329 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 11:21:25,329 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 11:21:25,330 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 11:21:25,330 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 11:21:25,331 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 11:21:25,331 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 11:21:25,332 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 11:21:25,333 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 11:21:25,333 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 11:21:25,334 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 11:21:25,334 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 11:21:25,334 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 11:21:25,335 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 11:21:25,335 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 11:21:25,336 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_238e362a-f1b4-440c-9905-b49a723178d0/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-10-22 11:21:25,346 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 11:21:25,346 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 11:21:25,347 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 11:21:25,347 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-22 11:21:25,347 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-22 11:21:25,347 INFO L138 SettingsManager]: * Explicit value domain=true [2019-10-22 11:21:25,348 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-10-22 11:21:25,348 INFO L138 SettingsManager]: * Octagon Domain=false [2019-10-22 11:21:25,348 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-10-22 11:21:25,348 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-10-22 11:21:25,348 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-10-22 11:21:25,348 INFO L138 SettingsManager]: * Interval Domain=false [2019-10-22 11:21:25,349 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 11:21:25,349 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 11:21:25,349 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 11:21:25,350 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 11:21:25,350 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 11:21:25,350 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 11:21:25,350 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 11:21:25,350 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 11:21:25,350 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 11:21:25,351 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 11:21:25,351 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 11:21:25,351 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 11:21:25,351 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 11:21:25,352 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 11:21:25,352 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 11:21:25,352 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:21:25,352 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 11:21:25,352 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 11:21:25,352 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 11:21:25,353 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-22 11:21:25,353 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 11:21:25,353 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 11:21:25,353 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 11:21:25,353 INFO L138 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_238e362a-f1b4-440c-9905-b49a723178d0/bin/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 -> a90ab4b5fd896d7fe8c91ee95d37e83b559389ba [2019-10-22 11:21:25,376 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 11:21:25,385 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 11:21:25,388 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 11:21:25,389 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 11:21:25,389 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 11:21:25,390 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_238e362a-f1b4-440c-9905-b49a723178d0/bin/utaipan/../../sv-benchmarks/c/float-newlib/double_req_bl_0682b.c [2019-10-22 11:21:25,433 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_238e362a-f1b4-440c-9905-b49a723178d0/bin/utaipan/data/d860e930b/f86fc9b4e50a44f58d082602c0ce0fe3/FLAGdaeefbeab [2019-10-22 11:21:25,833 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 11:21:25,834 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_238e362a-f1b4-440c-9905-b49a723178d0/sv-benchmarks/c/float-newlib/double_req_bl_0682b.c [2019-10-22 11:21:25,840 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_238e362a-f1b4-440c-9905-b49a723178d0/bin/utaipan/data/d860e930b/f86fc9b4e50a44f58d082602c0ce0fe3/FLAGdaeefbeab [2019-10-22 11:21:26,211 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_238e362a-f1b4-440c-9905-b49a723178d0/bin/utaipan/data/d860e930b/f86fc9b4e50a44f58d082602c0ce0fe3 [2019-10-22 11:21:26,213 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 11:21:26,214 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 11:21:26,215 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 11:21:26,228 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 11:21:26,230 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 11:21:26,231 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:21:26" (1/1) ... [2019-10-22 11:21:26,233 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e47d9c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:26, skipping insertion in model container [2019-10-22 11:21:26,233 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:21:26" (1/1) ... [2019-10-22 11:21:26,240 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 11:21:26,262 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 11:21:26,511 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:21:26,519 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 11:21:26,586 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:21:26,604 INFO L192 MainTranslator]: Completed translation [2019-10-22 11:21:26,604 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:26 WrapperNode [2019-10-22 11:21:26,604 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 11:21:26,604 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 11:21:26,605 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 11:21:26,605 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 11:21:26,612 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:26" (1/1) ... [2019-10-22 11:21:26,624 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:26" (1/1) ... [2019-10-22 11:21:26,671 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 11:21:26,672 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 11:21:26,672 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 11:21:26,672 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 11:21:26,680 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:26" (1/1) ... [2019-10-22 11:21:26,681 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:26" (1/1) ... [2019-10-22 11:21:26,688 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:26" (1/1) ... [2019-10-22 11:21:26,688 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:26" (1/1) ... [2019-10-22 11:21:26,707 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:26" (1/1) ... [2019-10-22 11:21:26,722 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:26" (1/1) ... [2019-10-22 11:21:26,725 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:26" (1/1) ... [2019-10-22 11:21:26,730 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 11:21:26,730 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 11:21:26,730 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 11:21:26,730 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 11:21:26,731 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:26" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_238e362a-f1b4-440c-9905-b49a723178d0/bin/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 [2019-10-22 11:21:26,794 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 11:21:26,795 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2019-10-22 11:21:26,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-22 11:21:26,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-10-22 11:21:26,795 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 11:21:26,795 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 11:21:26,795 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-22 11:21:26,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2019-10-22 11:21:26,796 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-22 11:21:27,384 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 11:21:27,384 INFO L284 CfgBuilder]: Removed 52 assume(true) statements. [2019-10-22 11:21:27,385 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:21:27 BoogieIcfgContainer [2019-10-22 11:21:27,385 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 11:21:27,386 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 11:21:27,386 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 11:21:27,389 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 11:21:27,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 11:21:26" (1/3) ... [2019-10-22 11:21:27,389 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44023e1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:21:27, skipping insertion in model container [2019-10-22 11:21:27,390 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:26" (2/3) ... [2019-10-22 11:21:27,390 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44023e1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:21:27, skipping insertion in model container [2019-10-22 11:21:27,390 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:21:27" (3/3) ... [2019-10-22 11:21:27,392 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_0682b.c [2019-10-22 11:21:27,400 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 11:21:27,406 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-22 11:21:27,415 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-22 11:21:27,435 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 11:21:27,435 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 11:21:27,435 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 11:21:27,435 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 11:21:27,436 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 11:21:27,436 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 11:21:27,436 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 11:21:27,436 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 11:21:27,450 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states. [2019-10-22 11:21:27,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-10-22 11:21:27,455 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:21:27,456 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:21:27,458 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:21:27,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:21:27,462 INFO L82 PathProgramCache]: Analyzing trace with hash -617567418, now seen corresponding path program 1 times [2019-10-22 11:21:27,470 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:21:27,470 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879805740] [2019-10-22 11:21:27,470 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:21:27,471 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:21:27,471 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:21:27,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:21:27,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:21:27,599 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879805740] [2019-10-22 11:21:27,601 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:21:27,603 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 11:21:27,603 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807902510] [2019-10-22 11:21:27,606 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-22 11:21:27,607 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:21:27,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-22 11:21:27,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 11:21:27,619 INFO L87 Difference]: Start difference. First operand 124 states. Second operand 2 states. [2019-10-22 11:21:27,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:21:27,647 INFO L93 Difference]: Finished difference Result 246 states and 412 transitions. [2019-10-22 11:21:27,648 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-22 11:21:27,649 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 15 [2019-10-22 11:21:27,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:21:27,659 INFO L225 Difference]: With dead ends: 246 [2019-10-22 11:21:27,659 INFO L226 Difference]: Without dead ends: 120 [2019-10-22 11:21:27,662 INFO L600 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 [2019-10-22 11:21:27,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2019-10-22 11:21:27,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2019-10-22 11:21:27,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2019-10-22 11:21:27,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 169 transitions. [2019-10-22 11:21:27,698 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 169 transitions. Word has length 15 [2019-10-22 11:21:27,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:21:27,699 INFO L462 AbstractCegarLoop]: Abstraction has 120 states and 169 transitions. [2019-10-22 11:21:27,699 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-22 11:21:27,699 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 169 transitions. [2019-10-22 11:21:27,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-10-22 11:21:27,699 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:21:27,700 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:21:27,700 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:21:27,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:21:27,700 INFO L82 PathProgramCache]: Analyzing trace with hash -397782484, now seen corresponding path program 1 times [2019-10-22 11:21:27,701 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:21:27,701 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695266615] [2019-10-22 11:21:27,701 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:21:27,701 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:21:27,701 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:21:27,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:21:27,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:21:27,781 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695266615] [2019-10-22 11:21:27,781 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:21:27,781 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 11:21:27,781 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43084325] [2019-10-22 11:21:27,782 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:21:27,783 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:21:27,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:21:27,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:21:27,783 INFO L87 Difference]: Start difference. First operand 120 states and 169 transitions. Second operand 3 states. [2019-10-22 11:21:27,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:21:27,806 INFO L93 Difference]: Finished difference Result 229 states and 326 transitions. [2019-10-22 11:21:27,806 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:21:27,806 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2019-10-22 11:21:27,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:21:27,807 INFO L225 Difference]: With dead ends: 229 [2019-10-22 11:21:27,808 INFO L226 Difference]: Without dead ends: 120 [2019-10-22 11:21:27,809 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:21:27,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2019-10-22 11:21:27,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2019-10-22 11:21:27,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2019-10-22 11:21:27,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 168 transitions. [2019-10-22 11:21:27,817 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 168 transitions. Word has length 18 [2019-10-22 11:21:27,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:21:27,817 INFO L462 AbstractCegarLoop]: Abstraction has 120 states and 168 transitions. [2019-10-22 11:21:27,817 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:21:27,818 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 168 transitions. [2019-10-22 11:21:27,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-10-22 11:21:27,818 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:21:27,818 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:21:27,818 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:21:27,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:21:27,819 INFO L82 PathProgramCache]: Analyzing trace with hash -1006577033, now seen corresponding path program 1 times [2019-10-22 11:21:27,819 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:21:27,819 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812758630] [2019-10-22 11:21:27,819 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:21:27,819 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:21:27,820 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:21:28,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 11:21:28,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 11:21:28,312 INFO L168 tionRefinementEngine]: Strategy TAIPAN found a feasible trace [2019-10-22 11:21:28,313 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-10-22 11:21:28,353 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 11:21:28 BoogieIcfgContainer [2019-10-22 11:21:28,354 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 11:21:28,354 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 11:21:28,354 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 11:21:28,355 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 11:21:28,355 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:21:27" (3/4) ... [2019-10-22 11:21:28,362 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-10-22 11:21:28,362 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 11:21:28,364 INFO L168 Benchmark]: Toolchain (without parser) took 2149.30 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 112.7 MB). Free memory was 944.5 MB in the beginning and 892.3 MB in the end (delta: 52.3 MB). Peak memory consumption was 165.0 MB. Max. memory is 11.5 GB. [2019-10-22 11:21:28,365 INFO L168 Benchmark]: CDTParser took 1.84 ms. Allocated memory is still 1.0 GB. Free memory is still 967.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:21:28,365 INFO L168 Benchmark]: CACSL2BoogieTranslator took 388.68 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 112.7 MB). Free memory was 944.5 MB in the beginning and 1.1 GB in the end (delta: -150.5 MB). Peak memory consumption was 22.6 MB. Max. memory is 11.5 GB. [2019-10-22 11:21:28,366 INFO L168 Benchmark]: Boogie Procedure Inliner took 67.07 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:21:28,366 INFO L168 Benchmark]: Boogie Preprocessor took 58.22 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. [2019-10-22 11:21:28,367 INFO L168 Benchmark]: RCFGBuilder took 655.00 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 63.7 MB). Peak memory consumption was 63.7 MB. Max. memory is 11.5 GB. [2019-10-22 11:21:28,367 INFO L168 Benchmark]: TraceAbstraction took 967.88 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 892.3 MB in the end (delta: 132.1 MB). Peak memory consumption was 132.1 MB. Max. memory is 11.5 GB. [2019-10-22 11:21:28,368 INFO L168 Benchmark]: Witness Printer took 8.19 ms. Allocated memory is still 1.1 GB. Free memory is still 892.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:21:28,370 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.84 ms. Allocated memory is still 1.0 GB. Free memory is still 967.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 388.68 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 112.7 MB). Free memory was 944.5 MB in the beginning and 1.1 GB in the end (delta: -150.5 MB). Peak memory consumption was 22.6 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 67.07 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 58.22 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. * RCFGBuilder took 655.00 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 63.7 MB). Peak memory consumption was 63.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 967.88 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 892.3 MB in the end (delta: 132.1 MB). Peak memory consumption was 132.1 MB. Max. memory is 11.5 GB. * Witness Printer took 8.19 ms. Allocated memory is still 1.1 GB. Free memory is still 892.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 285]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 162, overapproximation of someUnaryDOUBLEoperation at line 52, overapproximation of someBinaryArithmeticDOUBLEoperation at line 163, overapproximation of bitwiseAnd at line 160, overapproximation of someBinaryDOUBLEComparisonOperation at line 284. Possible FailurePath: [L37-L42] static const double atanhi_atan[] = { 4.63647609000806093515e-01, 7.85398163397448278999e-01, 9.82793723247329054082e-01, 1.57079632679489655800e+00, }; [L44-L49] static const double atanlo_atan[] = { 2.26987774529616870924e-17, 3.06161699786838301793e-17, 1.39033110312309984516e-17, 6.12323399573676603587e-17, }; [L51-L58] static const double aT_atan[] = { 3.33333333333329318027e-01, -1.99999999998764832476e-01, 1.42857142725034663711e-01, -1.11111104054623557880e-01, 9.09088713343650656196e-02, -7.69187620504482999495e-02, 6.66107313738753120669e-02, -5.83357013379057348645e-02, 4.97687799461593236017e-02, -3.65315727442169155270e-02, 1.62858201153657823623e-02, }; [L60-L62] static const double one_atan = 1.0, pi_o_4 = 7.8539816339744827900E-01, pi_o_2 = 1.5707963267948965580E+00, pi = 3.1415926535897931160E+00, huge_atan = 1.0e300; [L139-L140] static const double tiny_atan2 = 1.0e-300, zero_atan2 = 0.0, pi_lo_atan2 = 1.2246467991473531772E-16; VAL [aT_atan={1:0}, atanhi_atan={-5:0}, atanlo_atan={-10:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, zero_atan2=0] [L276] double x = -1.0 / 0.0; [L277] double y = __VERIFIER_nondet_double(); [L246] __int32_t hx, lx; VAL [aT_atan={1:0}, atanhi_atan={-5:0}, atanlo_atan={-10:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, zero_atan2=0] [L248] ieee_double_shape_type ew_u; [L249] ew_u.value = (x) [L250] EXPR ew_u.parts.msw [L250] (hx) = ew_u.parts.msw [L251] EXPR ew_u.parts.lsw [L251] (lx) = ew_u.parts.lsw [L253] hx &= 0x7fffffff [L254] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L255] hx = 0x7ff00000 - hx [L256] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); VAL [aT_atan={1:0}, atanhi_atan={-5:0}, atanlo_atan={-10:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, zero_atan2=0] [L279] EXPR isinf_double(x) && isfinite_double(y) [L260] __int32_t hx; VAL [aT_atan={1:0}, atanhi_atan={-5:0}, atanlo_atan={-10:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, zero_atan2=0] [L262] ieee_double_shape_type gh_u; [L263] gh_u.value = (x) [L264] EXPR gh_u.parts.msw [L264] (hx) = gh_u.parts.msw [L266] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); VAL [aT_atan={1:0}, atanhi_atan={-5:0}, atanlo_atan={-10:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, zero_atan2=0] [L279] EXPR isinf_double(x) && isfinite_double(y) VAL [aT_atan={1:0}, atanhi_atan={-5:0}, atanlo_atan={-10:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, zero_atan2=0] [L279] COND TRUE isinf_double(x) && isfinite_double(y) && y > 0.0 [L143] double z; [L144] __int32_t k, m, hx, hy, ix, iy; [L145] __uint32_t lx, ly; VAL [aT_atan={1:0}, atanhi_atan={-5:0}, atanlo_atan={-10:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, zero_atan2=0] [L148] ieee_double_shape_type ew_u; [L149] ew_u.value = (x) [L150] EXPR ew_u.parts.msw [L150] (hx) = ew_u.parts.msw [L151] EXPR ew_u.parts.lsw [L151] (lx) = ew_u.parts.lsw [L153] ix = hx & 0x7fffffff VAL [aT_atan={1:0}, atanhi_atan={-5:0}, atanlo_atan={-10:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, zero_atan2=0] [L155] ieee_double_shape_type ew_u; [L156] ew_u.value = (y) [L157] EXPR ew_u.parts.msw [L157] (hy) = ew_u.parts.msw [L158] EXPR ew_u.parts.lsw [L158] (ly) = ew_u.parts.lsw [L160] iy = hy & 0x7fffffff VAL [aT_atan={1:0}, atanhi_atan={-5:0}, atanlo_atan={-10:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, zero_atan2=0] [L161-L162] COND TRUE ((ix | ((lx | -lx) >> 31)) > 0x7ff00000) || ((iy | ((ly | -ly) >> 31)) > 0x7ff00000) [L163] return x + y; VAL [aT_atan={1:0}, atanhi_atan={-5:0}, atanlo_atan={-10:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, zero_atan2=0] [L281] double res = __ieee754_atan2(y, x); [L284] COND TRUE res != pi VAL [aT_atan={1:0}, atanhi_atan={-5:0}, atanlo_atan={-10:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, zero_atan2=0] [L285] __VERIFIER_error() VAL [aT_atan={1:0}, atanhi_atan={-5:0}, atanlo_atan={-10:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, zero_atan2=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 124 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.9s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 343 SDtfs, 0 SDslu, 163 SDs, 0 SdLazy, 5 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=124occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 55 NumberOfCodeBlocks, 55 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 31 ConstructedInterpolants, 0 QuantifiedInterpolants, 502 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: 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 0.1.24-cad4683 [2019-10-22 11:21:30,356 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 11:21:30,357 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 11:21:30,366 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 11:21:30,366 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 11:21:30,367 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 11:21:30,368 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 11:21:30,370 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 11:21:30,371 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 11:21:30,372 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 11:21:30,373 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 11:21:30,373 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 11:21:30,374 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 11:21:30,374 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 11:21:30,375 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 11:21:30,376 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 11:21:30,377 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 11:21:30,377 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 11:21:30,379 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 11:21:30,380 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 11:21:30,381 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 11:21:30,382 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 11:21:30,383 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 11:21:30,384 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 11:21:30,385 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 11:21:30,386 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 11:21:30,386 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 11:21:30,387 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 11:21:30,387 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 11:21:30,388 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 11:21:30,388 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 11:21:30,389 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 11:21:30,389 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 11:21:30,390 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 11:21:30,390 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 11:21:30,391 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 11:21:30,391 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 11:21:30,391 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 11:21:30,392 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 11:21:30,392 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 11:21:30,393 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 11:21:30,394 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_238e362a-f1b4-440c-9905-b49a723178d0/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2019-10-22 11:21:30,409 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 11:21:30,409 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 11:21:30,410 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 11:21:30,410 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-22 11:21:30,410 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-22 11:21:30,410 INFO L138 SettingsManager]: * Explicit value domain=true [2019-10-22 11:21:30,410 INFO L138 SettingsManager]: * Octagon Domain=false [2019-10-22 11:21:30,411 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-10-22 11:21:30,411 INFO L138 SettingsManager]: * Interval Domain=false [2019-10-22 11:21:30,411 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 11:21:30,411 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 11:21:30,415 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 11:21:30,415 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 11:21:30,416 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 11:21:30,416 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 11:21:30,416 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 11:21:30,416 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-10-22 11:21:30,416 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-10-22 11:21:30,416 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 11:21:30,417 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 11:21:30,417 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 11:21:30,417 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 11:21:30,417 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 11:21:30,417 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 11:21:30,417 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 11:21:30,417 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 11:21:30,418 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:21:30,418 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 11:21:30,418 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 11:21:30,418 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 11:21:30,418 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2019-10-22 11:21:30,418 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-10-22 11:21:30,419 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 11:21:30,419 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 11:21:30,419 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_238e362a-f1b4-440c-9905-b49a723178d0/bin/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 -> a90ab4b5fd896d7fe8c91ee95d37e83b559389ba [2019-10-22 11:21:30,447 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 11:21:30,456 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 11:21:30,459 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 11:21:30,460 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 11:21:30,461 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 11:21:30,461 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_238e362a-f1b4-440c-9905-b49a723178d0/bin/utaipan/../../sv-benchmarks/c/float-newlib/double_req_bl_0682b.c [2019-10-22 11:21:30,517 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_238e362a-f1b4-440c-9905-b49a723178d0/bin/utaipan/data/70d0726d6/76666ae1366744e5b969b67d54be3757/FLAG976196132 [2019-10-22 11:21:30,927 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 11:21:30,927 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_238e362a-f1b4-440c-9905-b49a723178d0/sv-benchmarks/c/float-newlib/double_req_bl_0682b.c [2019-10-22 11:21:30,934 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_238e362a-f1b4-440c-9905-b49a723178d0/bin/utaipan/data/70d0726d6/76666ae1366744e5b969b67d54be3757/FLAG976196132 [2019-10-22 11:21:30,946 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_238e362a-f1b4-440c-9905-b49a723178d0/bin/utaipan/data/70d0726d6/76666ae1366744e5b969b67d54be3757 [2019-10-22 11:21:30,949 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 11:21:30,950 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 11:21:30,951 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 11:21:30,952 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 11:21:30,955 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 11:21:30,956 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:21:30" (1/1) ... [2019-10-22 11:21:30,958 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6fad9d76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:30, skipping insertion in model container [2019-10-22 11:21:30,958 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:21:30" (1/1) ... [2019-10-22 11:21:30,965 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 11:21:30,990 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 11:21:31,202 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:21:31,211 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 11:21:31,348 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:21:31,377 INFO L192 MainTranslator]: Completed translation [2019-10-22 11:21:31,377 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:31 WrapperNode [2019-10-22 11:21:31,377 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 11:21:31,378 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 11:21:31,378 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 11:21:31,379 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 11:21:31,387 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:31" (1/1) ... [2019-10-22 11:21:31,403 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:31" (1/1) ... [2019-10-22 11:21:31,441 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 11:21:31,441 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 11:21:31,441 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 11:21:31,441 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 11:21:31,450 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:31" (1/1) ... [2019-10-22 11:21:31,451 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:31" (1/1) ... [2019-10-22 11:21:31,458 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:31" (1/1) ... [2019-10-22 11:21:31,459 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:31" (1/1) ... [2019-10-22 11:21:31,484 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:31" (1/1) ... [2019-10-22 11:21:31,493 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:31" (1/1) ... [2019-10-22 11:21:31,497 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:31" (1/1) ... [2019-10-22 11:21:31,502 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 11:21:31,503 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 11:21:31,503 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 11:21:31,503 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 11:21:31,504 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:31" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_238e362a-f1b4-440c-9905-b49a723178d0/bin/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 [2019-10-22 11:21:31,572 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2019-10-22 11:21:31,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2019-10-22 11:21:31,573 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 11:21:31,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8 [2019-10-22 11:21:31,575 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-10-22 11:21:31,575 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 11:21:31,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 11:21:31,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-10-22 11:21:31,575 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-22 11:22:07,965 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 11:22:07,966 INFO L284 CfgBuilder]: Removed 52 assume(true) statements. [2019-10-22 11:22:07,967 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:22:07 BoogieIcfgContainer [2019-10-22 11:22:07,967 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 11:22:07,968 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 11:22:07,968 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 11:22:07,971 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 11:22:07,971 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 11:21:30" (1/3) ... [2019-10-22 11:22:07,972 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10c14665 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:22:07, skipping insertion in model container [2019-10-22 11:22:07,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:31" (2/3) ... [2019-10-22 11:22:07,973 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10c14665 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:22:07, skipping insertion in model container [2019-10-22 11:22:07,973 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:22:07" (3/3) ... [2019-10-22 11:22:07,974 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_0682b.c [2019-10-22 11:22:07,983 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 11:22:07,992 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-22 11:22:08,002 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-22 11:22:08,030 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 11:22:08,030 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 11:22:08,031 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 11:22:08,031 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 11:22:08,031 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 11:22:08,031 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 11:22:08,032 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 11:22:08,032 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 11:22:08,049 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states. [2019-10-22 11:22:08,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-10-22 11:22:08,056 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:22:08,057 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:22:08,059 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:22:08,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:22:08,066 INFO L82 PathProgramCache]: Analyzing trace with hash -617567418, now seen corresponding path program 1 times [2019-10-22 11:22:08,078 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:22:08,078 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [535840237] [2019-10-22 11:22:08,079 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_238e362a-f1b4-440c-9905-b49a723178d0/bin/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 [2019-10-22 11:22:08,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:22:08,427 INFO L256 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 1 conjunts are in the unsatisfiable core [2019-10-22 11:22:08,431 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:22:08,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:22:08,447 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:22:08,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:22:08,456 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [535840237] [2019-10-22 11:22:08,457 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:22:08,458 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-10-22 11:22:08,458 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962507712] [2019-10-22 11:22:08,462 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-22 11:22:08,463 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:22:08,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-22 11:22:08,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 11:22:08,478 INFO L87 Difference]: Start difference. First operand 124 states. Second operand 2 states. [2019-10-22 11:22:08,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:22:08,505 INFO L93 Difference]: Finished difference Result 246 states and 412 transitions. [2019-10-22 11:22:08,505 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-22 11:22:08,506 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 15 [2019-10-22 11:22:08,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:22:08,518 INFO L225 Difference]: With dead ends: 246 [2019-10-22 11:22:08,518 INFO L226 Difference]: Without dead ends: 120 [2019-10-22 11:22:08,521 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 11:22:08,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2019-10-22 11:22:08,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2019-10-22 11:22:08,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2019-10-22 11:22:08,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 169 transitions. [2019-10-22 11:22:08,559 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 169 transitions. Word has length 15 [2019-10-22 11:22:08,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:22:08,559 INFO L462 AbstractCegarLoop]: Abstraction has 120 states and 169 transitions. [2019-10-22 11:22:08,559 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-22 11:22:08,559 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 169 transitions. [2019-10-22 11:22:08,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-10-22 11:22:08,560 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:22:08,560 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:22:08,761 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-10-22 11:22:08,761 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:22:08,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:22:08,761 INFO L82 PathProgramCache]: Analyzing trace with hash -397782484, now seen corresponding path program 1 times [2019-10-22 11:22:08,762 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:22:08,762 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [835199502] [2019-10-22 11:22:08,763 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_238e362a-f1b4-440c-9905-b49a723178d0/bin/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2019-10-22 11:22:09,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:22:09,161 INFO L256 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 11:22:09,163 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:22:09,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:22:09,175 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:22:09,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:22:09,178 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [835199502] [2019-10-22 11:22:09,178 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:22:09,178 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-10-22 11:22:09,178 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107935819] [2019-10-22 11:22:09,183 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:22:09,184 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:22:09,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:22:09,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:22:09,184 INFO L87 Difference]: Start difference. First operand 120 states and 169 transitions. Second operand 3 states. [2019-10-22 11:22:09,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:22:09,214 INFO L93 Difference]: Finished difference Result 229 states and 326 transitions. [2019-10-22 11:22:09,215 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:22:09,215 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2019-10-22 11:22:09,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:22:09,217 INFO L225 Difference]: With dead ends: 229 [2019-10-22 11:22:09,217 INFO L226 Difference]: Without dead ends: 120 [2019-10-22 11:22:09,218 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:22:09,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2019-10-22 11:22:09,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2019-10-22 11:22:09,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2019-10-22 11:22:09,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 168 transitions. [2019-10-22 11:22:09,227 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 168 transitions. Word has length 18 [2019-10-22 11:22:09,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:22:09,228 INFO L462 AbstractCegarLoop]: Abstraction has 120 states and 168 transitions. [2019-10-22 11:22:09,228 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:22:09,228 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 168 transitions. [2019-10-22 11:22:09,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-10-22 11:22:09,228 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:22:09,229 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:22:09,429 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-10-22 11:22:09,429 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:22:09,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:22:09,430 INFO L82 PathProgramCache]: Analyzing trace with hash -1006577033, now seen corresponding path program 1 times [2019-10-22 11:22:09,430 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:22:09,431 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [327796025] [2019-10-22 11:22:09,431 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_238e362a-f1b4-440c-9905-b49a723178d0/bin/utaipan/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2019-10-22 11:22:09,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:22:09,947 INFO L256 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 28 conjunts are in the unsatisfiable core [2019-10-22 11:22:09,951 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:22:10,074 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 11:22:10,286 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-22 11:22:10,310 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 47 [2019-10-22 11:22:10,329 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2019-10-22 11:22:10,330 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-22 11:22:10,344 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-22 11:22:10,354 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-10-22 11:22:10,355 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 9 [2019-10-22 11:22:10,355 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-10-22 11:22:10,358 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-22 11:22:10,358 INFO L496 ElimStorePlain]: Start of recursive call 2: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-22 11:22:10,395 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-22 11:22:10,396 INFO L496 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2019-10-22 11:22:10,396 INFO L221 ElimStorePlain]: Needed 4 recursive calls to eliminate 5 variables, input treesize:93, output treesize:52 [2019-10-22 11:22:11,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:22:11,465 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:22:11,735 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 11:22:12,042 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 11:22:12,255 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-10-22 11:22:12,256 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis$ArrOccFinder$MyWalker.walk(ArrayOccurrenceAnalysis.java:277) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive$TermWalker.walk(NonRecursive.java:139) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis$ArrOccFinder$MyWalker.walk(ArrayOccurrenceAnalysis.java:195) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis$ArrOccFinder.(ArrayOccurrenceAnalysis.java:181) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis.(ArrayOccurrenceAnalysis.java:83) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis.downgradeDimensionsIfNecessary(ArrayOccurrenceAnalysis.java:171) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayIndexBasedCostEstimation.computeCostEstimation(ArrayIndexBasedCostEstimation.java:132) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayIndexBasedCostEstimation.(ArrayIndexBasedCostEstimation.java:64) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.computeCostEstimation(ElimStorePlain.java:519) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:390) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.startRecursiveElimination(ElimStorePlain.java:216) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:306) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.tryToEliminate(PartialQuantifierElimination.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:245) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:439) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:418) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:290) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:335) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.checkFeasibility(TraceAbstractionRefinementEngine.java:244) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:160) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-10-22 11:22:12,260 INFO L168 Benchmark]: Toolchain (without parser) took 41309.49 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 166.7 MB). Free memory was 951.0 MB in the beginning and 893.8 MB in the end (delta: 57.2 MB). Peak memory consumption was 223.9 MB. Max. memory is 11.5 GB. [2019-10-22 11:22:12,260 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 977.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:22:12,261 INFO L168 Benchmark]: CACSL2BoogieTranslator took 426.41 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 166.7 MB). Free memory was 951.0 MB in the beginning and 1.2 GB in the end (delta: -204.5 MB). Peak memory consumption was 29.3 MB. Max. memory is 11.5 GB. [2019-10-22 11:22:12,262 INFO L168 Benchmark]: Boogie Procedure Inliner took 62.81 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-10-22 11:22:12,262 INFO L168 Benchmark]: Boogie Preprocessor took 61.20 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-10-22 11:22:12,263 INFO L168 Benchmark]: RCFGBuilder took 36464.51 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: 79.5 MB). Peak memory consumption was 79.5 MB. Max. memory is 11.5 GB. [2019-10-22 11:22:12,263 INFO L168 Benchmark]: TraceAbstraction took 4290.25 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 893.8 MB in the end (delta: 169.0 MB). Peak memory consumption was 169.0 MB. Max. memory is 11.5 GB. [2019-10-22 11:22:12,266 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 977.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 426.41 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 166.7 MB). Free memory was 951.0 MB in the beginning and 1.2 GB in the end (delta: -204.5 MB). Peak memory consumption was 29.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 62.81 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 61.20 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 36464.51 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: 79.5 MB). Peak memory consumption was 79.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4290.25 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 893.8 MB in the end (delta: 169.0 MB). Peak memory consumption was 169.0 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis$ArrOccFinder$MyWalker.walk(ArrayOccurrenceAnalysis.java:277) RESULT: Ultimate could not prove your program: Toolchain returned no result. [MP z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process Received shutdown request...