./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_0710.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_fd76f013-f79f-4373-a8e7-48704c75691d/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_fd76f013-f79f-4373-a8e7-48704c75691d/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_fd76f013-f79f-4373-a8e7-48704c75691d/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_fd76f013-f79f-4373-a8e7-48704c75691d/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0710.c -s /tmp/vcloud-vcloud-master/worker/run_dir_fd76f013-f79f-4373-a8e7-48704c75691d/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_fd76f013-f79f-4373-a8e7-48704c75691d/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 1ff4e8ff973f803d8fa94df33d1e2314e0626318 ........................................................................................................................................................................................................................................................................................... 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/run_dir_fd76f013-f79f-4373-a8e7-48704c75691d/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_fd76f013-f79f-4373-a8e7-48704c75691d/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_fd76f013-f79f-4373-a8e7-48704c75691d/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_fd76f013-f79f-4373-a8e7-48704c75691d/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0710.c -s /tmp/vcloud-vcloud-master/worker/run_dir_fd76f013-f79f-4373-a8e7-48704c75691d/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_fd76f013-f79f-4373-a8e7-48704c75691d/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 1ff4e8ff973f803d8fa94df33d1e2314e0626318 ....................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") --- Real Ultimate output --- This is Ultimate 0.1.24-6b5699a [2019-11-26 02:59:56,453 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:59:56,455 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:59:56,471 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 02:59:56,471 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 02:59:56,473 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 02:59:56,475 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 02:59:56,485 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 02:59:56,490 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 02:59:56,494 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 02:59:56,495 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 02:59:56,497 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 02:59:56,497 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:59:56,500 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:59:56,501 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:59:56,502 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:59:56,504 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:59:56,506 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:59:56,509 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:59:56,513 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:59:56,517 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:59:56,520 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:59:56,521 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:59:56,523 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:59:56,525 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 02:59:56,525 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 02:59:56,526 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 02:59:56,527 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 02:59:56,528 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 02:59:56,529 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 02:59:56,529 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:59:56,530 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:59:56,531 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:59:56,531 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:59:56,532 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:59:56,533 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:59:56,533 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:59:56,534 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:59:56,534 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:59:56,535 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:59:56,536 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:59:56,537 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_fd76f013-f79f-4373-a8e7-48704c75691d/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-11-26 02:59:56,566 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:59:56,566 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:59:56,577 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:59:56,578 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 02:59:56,578 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 02:59:56,578 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 02:59:56,578 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-26 02:59:56,579 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 02:59:56,579 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 02:59:56,579 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-26 02:59:56,579 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-26 02:59:56,579 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 02:59:56,580 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-26 02:59:56,580 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-26 02:59:56,580 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-26 02:59:56,581 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:59:56,581 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-26 02:59:56,581 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-26 02:59:56,581 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-26 02:59:56,582 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:59:56,582 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-26 02:59:56,582 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:59:56,582 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-26 02:59:56,583 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-26 02:59:56,583 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-26 02:59:56,583 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-26 02:59:56,583 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:59:56,583 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:59:56,584 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 02:59:56,585 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:59:56,585 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:59:56,586 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:59:56,586 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-26 02:59:56,586 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-26 02:59:56,586 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-26 02:59:56,587 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-26 02:59:56,587 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 02:59:56,587 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/run_dir_fd76f013-f79f-4373-a8e7-48704c75691d/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 -> 1ff4e8ff973f803d8fa94df33d1e2314e0626318 [2019-11-26 02:59:56,779 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:59:56,794 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:59:56,797 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:59:56,799 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:59:56,799 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:59:56,800 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_fd76f013-f79f-4373-a8e7-48704c75691d/bin/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_0710.c [2019-11-26 02:59:56,869 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_fd76f013-f79f-4373-a8e7-48704c75691d/bin/utaipan/data/16c9700c3/179e3862a6a34e379c89b455e6448048/FLAG301cb2fd8 [2019-11-26 02:59:57,297 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:59:57,298 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_fd76f013-f79f-4373-a8e7-48704c75691d/sv-benchmarks/c/float-newlib/float_req_bl_0710.c [2019-11-26 02:59:57,306 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_fd76f013-f79f-4373-a8e7-48704c75691d/bin/utaipan/data/16c9700c3/179e3862a6a34e379c89b455e6448048/FLAG301cb2fd8 [2019-11-26 02:59:57,685 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_fd76f013-f79f-4373-a8e7-48704c75691d/bin/utaipan/data/16c9700c3/179e3862a6a34e379c89b455e6448048 [2019-11-26 02:59:57,688 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:59:57,689 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:59:57,691 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:59:57,691 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:59:57,695 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:59:57,696 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:59:57" (1/1) ... [2019-11-26 02:59:57,699 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d2b1b34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:59:57, skipping insertion in model container [2019-11-26 02:59:57,699 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:59:57" (1/1) ... [2019-11-26 02:59:57,707 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:59:57,727 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:59:57,988 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:59:57,991 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:59:58,020 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:59:58,041 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:59:58,042 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:59:58 WrapperNode [2019-11-26 02:59:58,042 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:59:58,043 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:59:58,043 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:59:58,043 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:59:58,051 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:59:58" (1/1) ... [2019-11-26 02:59:58,062 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:59:58" (1/1) ... [2019-11-26 02:59:58,107 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:59:58,108 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:59:58,108 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:59:58,109 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:59:58,120 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:59:58" (1/1) ... [2019-11-26 02:59:58,120 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:59:58" (1/1) ... [2019-11-26 02:59:58,136 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:59:58" (1/1) ... [2019-11-26 02:59:58,138 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:59:58" (1/1) ... [2019-11-26 02:59:58,147 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:59:58" (1/1) ... [2019-11-26 02:59:58,168 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:59:58" (1/1) ... [2019-11-26 02:59:58,171 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:59:58" (1/1) ... [2019-11-26 02:59:58,182 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:59:58,187 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:59:58,187 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:59:58,188 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:59:58,189 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:59:58" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fd76f013-f79f-4373-a8e7-48704c75691d/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 [2019-11-26 02:59:58,284 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-26 02:59:58,286 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2019-11-26 02:59:58,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-26 02:59:58,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-11-26 02:59:58,287 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:59:58,287 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:59:58,287 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-26 02:59:58,287 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-26 02:59:58,943 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:59:58,944 INFO L284 CfgBuilder]: Removed 14 assume(true) statements. [2019-11-26 02:59:58,945 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:59:58 BoogieIcfgContainer [2019-11-26 02:59:58,945 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:59:58,946 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 02:59:58,946 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 02:59:58,949 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 02:59:58,950 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 02:59:57" (1/3) ... [2019-11-26 02:59:58,951 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cd06f68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:59:58, skipping insertion in model container [2019-11-26 02:59:58,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:59:58" (2/3) ... [2019-11-26 02:59:58,951 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cd06f68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:59:58, skipping insertion in model container [2019-11-26 02:59:58,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:59:58" (3/3) ... [2019-11-26 02:59:58,956 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_0710.c [2019-11-26 02:59:58,967 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 02:59:58,975 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-26 02:59:58,988 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-26 02:59:59,015 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 02:59:59,016 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-26 02:59:59,016 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 02:59:59,016 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 02:59:59,016 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 02:59:59,017 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 02:59:59,017 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 02:59:59,017 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 02:59:59,035 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2019-11-26 02:59:59,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-26 02:59:59,042 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:59:59,043 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:59:59,044 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:59:59,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:59:59,050 INFO L82 PathProgramCache]: Analyzing trace with hash -514569130, now seen corresponding path program 1 times [2019-11-26 02:59:59,060 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:59:59,061 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790593739] [2019-11-26 02:59:59,062 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:59:59,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:59:59,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:59:59,176 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790593739] [2019-11-26 02:59:59,177 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:59:59,177 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-26 02:59:59,178 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457105869] [2019-11-26 02:59:59,181 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-26 02:59:59,182 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:59:59,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-26 02:59:59,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-26 02:59:59,194 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 2 states. [2019-11-26 02:59:59,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:59:59,209 INFO L93 Difference]: Finished difference Result 42 states and 63 transitions. [2019-11-26 02:59:59,210 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-26 02:59:59,211 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2019-11-26 02:59:59,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:59:59,221 INFO L225 Difference]: With dead ends: 42 [2019-11-26 02:59:59,221 INFO L226 Difference]: Without dead ends: 19 [2019-11-26 02:59:59,224 INFO L630 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 [2019-11-26 02:59:59,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2019-11-26 02:59:59,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2019-11-26 02:59:59,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-11-26 02:59:59,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 24 transitions. [2019-11-26 02:59:59,260 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 24 transitions. Word has length 8 [2019-11-26 02:59:59,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:59:59,260 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 24 transitions. [2019-11-26 02:59:59,260 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-26 02:59:59,260 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 24 transitions. [2019-11-26 02:59:59,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-26 02:59:59,261 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:59:59,261 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:59:59,261 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:59:59,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:59:59,262 INFO L82 PathProgramCache]: Analyzing trace with hash -838571684, now seen corresponding path program 1 times [2019-11-26 02:59:59,262 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:59:59,262 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105678776] [2019-11-26 02:59:59,262 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:59:59,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-26 02:59:59,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-26 02:59:59,356 INFO L174 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2019-11-26 02:59:59,356 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-26 02:59:59,381 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 02:59:59 BoogieIcfgContainer [2019-11-26 02:59:59,381 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-26 02:59:59,382 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-26 02:59:59,382 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-26 02:59:59,382 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-26 02:59:59,382 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:59:58" (3/4) ... [2019-11-26 02:59:59,386 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-26 02:59:59,386 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-26 02:59:59,388 INFO L168 Benchmark]: Toolchain (without parser) took 1698.39 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 123.7 MB). Free memory was 951.5 MB in the beginning and 1.0 GB in the end (delta: -92.3 MB). Peak memory consumption was 31.4 MB. Max. memory is 11.5 GB. [2019-11-26 02:59:59,389 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:59:59,390 INFO L168 Benchmark]: CACSL2BoogieTranslator took 351.73 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 123.7 MB). Free memory was 951.5 MB in the beginning and 1.1 GB in the end (delta: -163.5 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. [2019-11-26 02:59:59,390 INFO L168 Benchmark]: Boogie Procedure Inliner took 65.26 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:59:59,391 INFO L168 Benchmark]: Boogie Preprocessor took 78.71 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: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2019-11-26 02:59:59,391 INFO L168 Benchmark]: RCFGBuilder took 758.03 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: 37.0 MB). Peak memory consumption was 37.0 MB. Max. memory is 11.5 GB. [2019-11-26 02:59:59,392 INFO L168 Benchmark]: TraceAbstraction took 435.33 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 27.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 11.5 GB. [2019-11-26 02:59:59,392 INFO L168 Benchmark]: Witness Printer took 4.71 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:59:59,396 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 351.73 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 123.7 MB). Free memory was 951.5 MB in the beginning and 1.1 GB in the end (delta: -163.5 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 65.26 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 78.71 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: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * RCFGBuilder took 758.03 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: 37.0 MB). Peak memory consumption was 37.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 435.33 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 27.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 11.5 GB. * Witness Printer took 4.71 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 98]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 13, overapproximation of bitwiseAnd at line 27, overapproximation of someBinaryArithmeticFLOAToperation at line 30. Possible FailurePath: [L15] static const float one_sqrt = 1.0, tiny_sqrt = 1.0e-30; [L91] float x = __VERIFIER_nondet_float(); [L92] COND TRUE x < -0.0f [L18] float z; [L19] __uint32_t r, hx; [L20] __int32_t ix, s, q, m, t, i; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000] [L23] ieee_float_shape_type gf_u; [L24] gf_u.value = (x) [L25] EXPR gf_u.word [L25] (ix) = gf_u.word [L27] hx = ix & 0x7fffffff VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000] [L29] COND TRUE !((hx) < 0x7f800000L) [L30] return x * x + x; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000] [L94] float res = __ieee754_sqrtf(x); [L13] return x != x; [L97] COND TRUE !isnan_float(res) [L98] __VERIFIER_error() VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 22 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 28 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 49 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 0.1.24-6b5699a [2019-11-26 03:00:01,266 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 03:00:01,268 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 03:00:01,279 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 03:00:01,280 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 03:00:01,281 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 03:00:01,282 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 03:00:01,285 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 03:00:01,287 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 03:00:01,287 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 03:00:01,289 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 03:00:01,290 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 03:00:01,290 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 03:00:01,291 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 03:00:01,292 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 03:00:01,293 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 03:00:01,294 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 03:00:01,295 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 03:00:01,297 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 03:00:01,299 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 03:00:01,301 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 03:00:01,302 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 03:00:01,304 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 03:00:01,304 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 03:00:01,307 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 03:00:01,308 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 03:00:01,308 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 03:00:01,309 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 03:00:01,309 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 03:00:01,310 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 03:00:01,310 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 03:00:01,311 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 03:00:01,312 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 03:00:01,313 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 03:00:01,314 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 03:00:01,314 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 03:00:01,315 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 03:00:01,315 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 03:00:01,315 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 03:00:01,316 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 03:00:01,317 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 03:00:01,318 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_fd76f013-f79f-4373-a8e7-48704c75691d/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2019-11-26 03:00:01,333 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 03:00:01,334 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 03:00:01,334 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 03:00:01,335 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 03:00:01,335 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 03:00:01,335 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 03:00:01,335 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 03:00:01,336 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 03:00:01,336 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 03:00:01,337 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 03:00:01,337 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-26 03:00:01,337 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-26 03:00:01,337 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 03:00:01,337 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-26 03:00:01,338 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 03:00:01,338 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-26 03:00:01,338 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-26 03:00:01,338 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-26 03:00:01,339 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-26 03:00:01,339 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-26 03:00:01,339 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-26 03:00:01,339 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-26 03:00:01,339 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-26 03:00:01,340 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 03:00:01,340 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-26 03:00:01,340 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 03:00:01,340 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 03:00:01,341 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 03:00:01,341 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 03:00:01,341 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 03:00:01,341 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-26 03:00:01,342 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2019-11-26 03:00:01,342 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-26 03:00:01,342 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-26 03:00:01,342 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 03:00:01,342 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/run_dir_fd76f013-f79f-4373-a8e7-48704c75691d/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 -> 1ff4e8ff973f803d8fa94df33d1e2314e0626318 [2019-11-26 03:00:01,668 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 03:00:01,681 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 03:00:01,684 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 03:00:01,686 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 03:00:01,686 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 03:00:01,687 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_fd76f013-f79f-4373-a8e7-48704c75691d/bin/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_0710.c [2019-11-26 03:00:01,743 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_fd76f013-f79f-4373-a8e7-48704c75691d/bin/utaipan/data/8047a7093/e89e9ca435be445095ec63d97a1fbd0c/FLAG26dc14245 [2019-11-26 03:00:02,193 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 03:00:02,193 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_fd76f013-f79f-4373-a8e7-48704c75691d/sv-benchmarks/c/float-newlib/float_req_bl_0710.c [2019-11-26 03:00:02,201 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_fd76f013-f79f-4373-a8e7-48704c75691d/bin/utaipan/data/8047a7093/e89e9ca435be445095ec63d97a1fbd0c/FLAG26dc14245 [2019-11-26 03:00:02,565 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_fd76f013-f79f-4373-a8e7-48704c75691d/bin/utaipan/data/8047a7093/e89e9ca435be445095ec63d97a1fbd0c [2019-11-26 03:00:02,568 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 03:00:02,570 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 03:00:02,571 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 03:00:02,571 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 03:00:02,575 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 03:00:02,576 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 03:00:02" (1/1) ... [2019-11-26 03:00:02,579 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5260cef5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 03:00:02, skipping insertion in model container [2019-11-26 03:00:02,579 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 03:00:02" (1/1) ... [2019-11-26 03:00:02,587 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 03:00:02,609 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 03:00:02,846 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 03:00:02,852 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 03:00:02,904 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 03:00:02,933 INFO L205 MainTranslator]: Completed translation [2019-11-26 03:00:02,933 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 03:00:02 WrapperNode [2019-11-26 03:00:02,934 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 03:00:02,935 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 03:00:02,935 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 03:00:02,935 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 03:00:02,998 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 03:00:02" (1/1) ... [2019-11-26 03:00:03,026 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 03:00:02" (1/1) ... [2019-11-26 03:00:03,049 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 03:00:03,050 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 03:00:03,050 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 03:00:03,050 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 03:00:03,058 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 03:00:02" (1/1) ... [2019-11-26 03:00:03,058 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 03:00:02" (1/1) ... [2019-11-26 03:00:03,063 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 03:00:02" (1/1) ... [2019-11-26 03:00:03,063 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 03:00:02" (1/1) ... [2019-11-26 03:00:03,073 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 03:00:02" (1/1) ... [2019-11-26 03:00:03,079 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 03:00:02" (1/1) ... [2019-11-26 03:00:03,081 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 03:00:02" (1/1) ... [2019-11-26 03:00:03,086 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 03:00:03,086 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 03:00:03,086 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 03:00:03,087 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 03:00:03,087 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 03:00:02" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fd76f013-f79f-4373-a8e7-48704c75691d/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 [2019-11-26 03:00:03,171 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-26 03:00:03,172 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2019-11-26 03:00:03,172 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-26 03:00:03,174 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 03:00:03,175 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 03:00:03,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2019-11-26 03:00:03,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-26 03:00:03,175 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-26 03:00:04,134 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 03:00:04,134 INFO L284 CfgBuilder]: Removed 14 assume(true) statements. [2019-11-26 03:00:04,135 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 03:00:04 BoogieIcfgContainer [2019-11-26 03:00:04,135 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 03:00:04,136 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 03:00:04,136 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 03:00:04,139 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 03:00:04,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 03:00:02" (1/3) ... [2019-11-26 03:00:04,139 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@762936fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 03:00:04, skipping insertion in model container [2019-11-26 03:00:04,140 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 03:00:02" (2/3) ... [2019-11-26 03:00:04,140 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@762936fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 03:00:04, skipping insertion in model container [2019-11-26 03:00:04,140 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 03:00:04" (3/3) ... [2019-11-26 03:00:04,142 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_0710.c [2019-11-26 03:00:04,150 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 03:00:04,155 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-26 03:00:04,164 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-26 03:00:04,185 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 03:00:04,185 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-26 03:00:04,185 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 03:00:04,185 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 03:00:04,185 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 03:00:04,186 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 03:00:04,186 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 03:00:04,186 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 03:00:04,199 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2019-11-26 03:00:04,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-26 03:00:04,205 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 03:00:04,206 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 03:00:04,206 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 03:00:04,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 03:00:04,211 INFO L82 PathProgramCache]: Analyzing trace with hash 860611220, now seen corresponding path program 1 times [2019-11-26 03:00:04,221 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 03:00:04,222 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1092218731] [2019-11-26 03:00:04,222 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fd76f013-f79f-4373-a8e7-48704c75691d/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 [2019-11-26 03:00:04,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 03:00:04,411 INFO L255 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 1 conjunts are in the unsatisfiable core [2019-11-26 03:00:04,415 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 03:00:04,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 03:00:04,425 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 03:00:04,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 03:00:04,433 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1092218731] [2019-11-26 03:00:04,433 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 03:00:04,434 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-26 03:00:04,434 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006548029] [2019-11-26 03:00:04,437 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-26 03:00:04,438 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 03:00:04,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-26 03:00:04,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-26 03:00:04,449 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 2 states. [2019-11-26 03:00:04,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 03:00:04,464 INFO L93 Difference]: Finished difference Result 67 states and 102 transitions. [2019-11-26 03:00:04,464 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-26 03:00:04,465 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-11-26 03:00:04,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 03:00:04,474 INFO L225 Difference]: With dead ends: 67 [2019-11-26 03:00:04,475 INFO L226 Difference]: Without dead ends: 31 [2019-11-26 03:00:04,477 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-26 03:00:04,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-11-26 03:00:04,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2019-11-26 03:00:04,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-26 03:00:04,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 41 transitions. [2019-11-26 03:00:04,508 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 41 transitions. Word has length 10 [2019-11-26 03:00:04,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 03:00:04,508 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 41 transitions. [2019-11-26 03:00:04,508 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-26 03:00:04,508 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 41 transitions. [2019-11-26 03:00:04,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-26 03:00:04,509 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 03:00:04,509 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 03:00:04,716 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-26 03:00:04,716 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 03:00:04,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 03:00:04,717 INFO L82 PathProgramCache]: Analyzing trace with hash 1279985196, now seen corresponding path program 1 times [2019-11-26 03:00:04,717 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 03:00:04,718 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [594659316] [2019-11-26 03:00:04,718 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fd76f013-f79f-4373-a8e7-48704c75691d/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 [2019-11-26 03:00:04,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 03:00:04,890 INFO L255 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 16 conjunts are in the unsatisfiable core [2019-11-26 03:00:04,892 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 03:00:14,088 WARN L194 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2019-11-26 03:00:14,289 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-11-26 03:00:14,290 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:208) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:225) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:153) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.managedscript.ManagedScript.checkSat(ManagedScript.java:140) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:84) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:934) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.(PredicateUnifier.java:773) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:345) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:305) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp$UnifyPostprocessor.postprocess(TraceCheckSpWp.java:576) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:440) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:201) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:291) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:177) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.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.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:242) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:166) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:463) 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:333) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:171) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:123) 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$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1461) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:654) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:419) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:205) ... 41 more [2019-11-26 03:00:14,295 INFO L168 Benchmark]: Toolchain (without parser) took 11724.64 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 149.4 MB). Free memory was 957.8 MB in the beginning and 1.1 GB in the end (delta: -102.3 MB). Peak memory consumption was 47.1 MB. Max. memory is 11.5 GB. [2019-11-26 03:00:14,295 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 1.0 GB. Free memory is still 987.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 03:00:14,296 INFO L168 Benchmark]: CACSL2BoogieTranslator took 363.13 ms. Allocated memory is still 1.0 GB. Free memory was 957.8 MB in the beginning and 941.7 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2019-11-26 03:00:14,296 INFO L168 Benchmark]: Boogie Procedure Inliner took 114.86 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 149.4 MB). Free memory was 941.7 MB in the beginning and 1.1 GB in the end (delta: -198.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 11.5 GB. [2019-11-26 03:00:14,297 INFO L168 Benchmark]: Boogie Preprocessor took 36.26 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 03:00:14,297 INFO L168 Benchmark]: RCFGBuilder took 1049.29 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 30.1 MB). Peak memory consumption was 30.1 MB. Max. memory is 11.5 GB. [2019-11-26 03:00:14,298 INFO L168 Benchmark]: TraceAbstraction took 10156.37 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: 49.5 MB). Peak memory consumption was 49.5 MB. Max. memory is 11.5 GB. [2019-11-26 03:00:14,302 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 1.0 GB. Free memory is still 987.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 363.13 ms. Allocated memory is still 1.0 GB. Free memory was 957.8 MB in the beginning and 941.7 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 114.86 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 149.4 MB). Free memory was 941.7 MB in the beginning and 1.1 GB in the end (delta: -198.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 36.26 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 1049.29 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 30.1 MB). Peak memory consumption was 30.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 10156.37 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: 49.5 MB). Peak memory consumption was 49.5 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:208) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...