./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 f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_adb20942-02ac-4af4-9d6c-b2ba9a3ddc86/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_adb20942-02ac-4af4-9d6c-b2ba9a3ddc86/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_adb20942-02ac-4af4-9d6c-b2ba9a3ddc86/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_adb20942-02ac-4af4-9d6c-b2ba9a3ddc86/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0710.c -s /tmp/vcloud-vcloud-master/worker/run_dir_adb20942-02ac-4af4-9d6c-b2ba9a3ddc86/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_adb20942-02ac-4af4-9d6c-b2ba9a3ddc86/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_adb20942-02ac-4af4-9d6c-b2ba9a3ddc86/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_adb20942-02ac-4af4-9d6c-b2ba9a3ddc86/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_adb20942-02ac-4af4-9d6c-b2ba9a3ddc86/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_adb20942-02ac-4af4-9d6c-b2ba9a3ddc86/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0710.c -s /tmp/vcloud-vcloud-master/worker/run_dir_adb20942-02ac-4af4-9d6c-b2ba9a3ddc86/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_adb20942-02ac-4af4-9d6c-b2ba9a3ddc86/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: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 11:16:01,835 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 11:16:01,836 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 11:16:01,844 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 11:16:01,844 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 11:16:01,845 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 11:16:01,846 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 11:16:01,847 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 11:16:01,848 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 11:16:01,849 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 11:16:01,849 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 11:16:01,850 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 11:16:01,850 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 11:16:01,851 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 11:16:01,852 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 11:16:01,853 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 11:16:01,853 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 11:16:01,854 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 11:16:01,855 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 11:16:01,857 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 11:16:01,858 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 11:16:01,858 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 11:16:01,859 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 11:16:01,860 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 11:16:01,861 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 11:16:01,861 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 11:16:01,862 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 11:16:01,862 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 11:16:01,862 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 11:16:01,863 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 11:16:01,863 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 11:16:01,864 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 11:16:01,864 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 11:16:01,864 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 11:16:01,865 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 11:16:01,865 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 11:16:01,866 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 11:16:01,866 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 11:16:01,866 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 11:16:01,866 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 11:16:01,867 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 11:16:01,867 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_adb20942-02ac-4af4-9d6c-b2ba9a3ddc86/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-12-07 11:16:01,876 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 11:16:01,877 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 11:16:01,877 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 11:16:01,877 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 11:16:01,877 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 11:16:01,878 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 11:16:01,878 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-12-07 11:16:01,878 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 11:16:01,878 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 11:16:01,878 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-12-07 11:16:01,878 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-12-07 11:16:01,878 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 11:16:01,878 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-12-07 11:16:01,879 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-12-07 11:16:01,879 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-12-07 11:16:01,879 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 11:16:01,879 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 11:16:01,879 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 11:16:01,879 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 11:16:01,880 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 11:16:01,880 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 11:16:01,880 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 11:16:01,880 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 11:16:01,880 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 11:16:01,880 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 11:16:01,880 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 11:16:01,880 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 11:16:01,880 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 11:16:01,881 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 11:16:01,881 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 11:16:01,881 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 11:16:01,881 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 11:16:01,881 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 11:16:01,881 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 11:16:01,882 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 11:16:01,882 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-12-07 11:16:01,882 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 11:16:01,882 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 11:16:01,882 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 11:16:01,882 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 11:16:01,882 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_adb20942-02ac-4af4-9d6c-b2ba9a3ddc86/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 [2019-12-07 11:16:01,982 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 11:16:01,992 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 11:16:01,995 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 11:16:01,996 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 11:16:01,997 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 11:16:01,997 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_adb20942-02ac-4af4-9d6c-b2ba9a3ddc86/bin/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_0710.c [2019-12-07 11:16:02,040 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_adb20942-02ac-4af4-9d6c-b2ba9a3ddc86/bin/utaipan/data/90238d419/ae3462a379dd481c8d10aac23ad3f4a9/FLAG50dd59376 [2019-12-07 11:16:02,457 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 11:16:02,458 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_adb20942-02ac-4af4-9d6c-b2ba9a3ddc86/sv-benchmarks/c/float-newlib/float_req_bl_0710.c [2019-12-07 11:16:02,462 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_adb20942-02ac-4af4-9d6c-b2ba9a3ddc86/bin/utaipan/data/90238d419/ae3462a379dd481c8d10aac23ad3f4a9/FLAG50dd59376 [2019-12-07 11:16:02,471 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_adb20942-02ac-4af4-9d6c-b2ba9a3ddc86/bin/utaipan/data/90238d419/ae3462a379dd481c8d10aac23ad3f4a9 [2019-12-07 11:16:02,473 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 11:16:02,474 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 11:16:02,475 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 11:16:02,475 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 11:16:02,478 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 11:16:02,479 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 11:16:02" (1/1) ... [2019-12-07 11:16:02,481 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@408e5454 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:16:02, skipping insertion in model container [2019-12-07 11:16:02,481 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 11:16:02" (1/1) ... [2019-12-07 11:16:02,488 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 11:16:02,505 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 11:16:02,653 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 11:16:02,655 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 11:16:02,674 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 11:16:02,687 INFO L208 MainTranslator]: Completed translation [2019-12-07 11:16:02,688 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:16:02 WrapperNode [2019-12-07 11:16:02,688 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 11:16:02,688 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 11:16:02,688 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 11:16:02,689 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 11:16:02,694 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:16:02" (1/1) ... [2019-12-07 11:16:02,700 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:16:02" (1/1) ... [2019-12-07 11:16:02,716 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 11:16:02,717 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 11:16:02,717 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 11:16:02,717 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 11:16:02,723 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:16:02" (1/1) ... [2019-12-07 11:16:02,723 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:16:02" (1/1) ... [2019-12-07 11:16:02,725 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:16:02" (1/1) ... [2019-12-07 11:16:02,725 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:16:02" (1/1) ... [2019-12-07 11:16:02,730 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:16:02" (1/1) ... [2019-12-07 11:16:02,733 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:16:02" (1/1) ... [2019-12-07 11:16:02,735 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:16:02" (1/1) ... [2019-12-07 11:16:02,737 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 11:16:02,737 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 11:16:02,737 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 11:16:02,737 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 11:16:02,738 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:16:02" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_adb20942-02ac-4af4-9d6c-b2ba9a3ddc86/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 [2019-12-07 11:16:02,779 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 11:16:02,779 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2019-12-07 11:16:02,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-07 11:16:02,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-12-07 11:16:02,779 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 11:16:02,779 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 11:16:02,779 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-07 11:16:02,779 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 11:16:03,059 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 11:16:03,059 INFO L287 CfgBuilder]: Removed 14 assume(true) statements. [2019-12-07 11:16:03,060 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 11:16:03 BoogieIcfgContainer [2019-12-07 11:16:03,060 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 11:16:03,061 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 11:16:03,061 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 11:16:03,063 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 11:16:03,063 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 11:16:02" (1/3) ... [2019-12-07 11:16:03,064 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e40f16d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 11:16:03, skipping insertion in model container [2019-12-07 11:16:03,064 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:16:02" (2/3) ... [2019-12-07 11:16:03,064 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e40f16d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 11:16:03, skipping insertion in model container [2019-12-07 11:16:03,064 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 11:16:03" (3/3) ... [2019-12-07 11:16:03,065 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_0710.c [2019-12-07 11:16:03,071 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 11:16:03,076 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 11:16:03,083 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 11:16:03,098 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 11:16:03,098 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 11:16:03,098 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 11:16:03,098 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 11:16:03,098 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 11:16:03,098 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 11:16:03,098 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 11:16:03,098 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 11:16:03,108 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2019-12-07 11:16:03,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-07 11:16:03,112 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 11:16:03,112 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 11:16:03,112 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 11:16:03,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:16:03,116 INFO L82 PathProgramCache]: Analyzing trace with hash -514569130, now seen corresponding path program 1 times [2019-12-07 11:16:03,122 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 11:16:03,122 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6845661] [2019-12-07 11:16:03,122 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:16:03,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:16:03,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 11:16:03,195 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6845661] [2019-12-07 11:16:03,195 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 11:16:03,196 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 11:16:03,196 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337908636] [2019-12-07 11:16:03,199 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-07 11:16:03,199 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 11:16:03,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-07 11:16:03,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 11:16:03,209 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 2 states. [2019-12-07 11:16:03,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:16:03,221 INFO L93 Difference]: Finished difference Result 42 states and 63 transitions. [2019-12-07 11:16:03,221 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-07 11:16:03,222 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2019-12-07 11:16:03,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 11:16:03,228 INFO L225 Difference]: With dead ends: 42 [2019-12-07 11:16:03,228 INFO L226 Difference]: Without dead ends: 19 [2019-12-07 11:16:03,230 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 [2019-12-07 11:16:03,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2019-12-07 11:16:03,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2019-12-07 11:16:03,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-12-07 11:16:03,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 24 transitions. [2019-12-07 11:16:03,252 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 24 transitions. Word has length 8 [2019-12-07 11:16:03,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 11:16:03,252 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 24 transitions. [2019-12-07 11:16:03,252 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-07 11:16:03,252 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 24 transitions. [2019-12-07 11:16:03,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-07 11:16:03,252 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 11:16:03,252 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 11:16:03,253 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 11:16:03,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:16:03,253 INFO L82 PathProgramCache]: Analyzing trace with hash -838571684, now seen corresponding path program 1 times [2019-12-07 11:16:03,253 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 11:16:03,253 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307818721] [2019-12-07 11:16:03,253 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:16:03,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:16:03,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:16:03,308 INFO L174 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2019-12-07 11:16:03,308 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 11:16:03,325 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 11:16:03 BoogieIcfgContainer [2019-12-07 11:16:03,326 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 11:16:03,326 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 11:16:03,326 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 11:16:03,326 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 11:16:03,326 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 11:16:03" (3/4) ... [2019-12-07 11:16:03,329 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-12-07 11:16:03,329 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 11:16:03,330 INFO L168 Benchmark]: Toolchain (without parser) took 856.03 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 98.0 MB). Free memory was 940.9 MB in the beginning and 1.0 GB in the end (delta: -85.1 MB). Peak memory consumption was 13.0 MB. Max. memory is 11.5 GB. [2019-12-07 11:16:03,330 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 955.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 11:16:03,331 INFO L168 Benchmark]: CACSL2BoogieTranslator took 213.14 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 98.0 MB). Free memory was 940.9 MB in the beginning and 1.1 GB in the end (delta: -152.1 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. [2019-12-07 11:16:03,331 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.05 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-12-07 11:16:03,332 INFO L168 Benchmark]: Boogie Preprocessor took 20.12 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. [2019-12-07 11:16:03,332 INFO L168 Benchmark]: RCFGBuilder took 323.38 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: 39.1 MB). Peak memory consumption was 39.1 MB. Max. memory is 11.5 GB. [2019-12-07 11:16:03,333 INFO L168 Benchmark]: TraceAbstraction took 264.89 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 22.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 11.5 GB. [2019-12-07 11:16:03,333 INFO L168 Benchmark]: Witness Printer took 2.81 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 11:16:03,335 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 955.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 213.14 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 98.0 MB). Free memory was 940.9 MB in the beginning and 1.1 GB in the end (delta: -152.1 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 28.05 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 20.12 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. * RCFGBuilder took 323.38 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: 39.1 MB). Peak memory consumption was 39.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 264.89 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 22.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 11.5 GB. * Witness Printer took 2.81 ms. Allocated memory is still 1.1 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: 0.2s, 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 0.1.25-f470102 [2019-12-07 11:16:04,737 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 11:16:04,738 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 11:16:04,746 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 11:16:04,746 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 11:16:04,747 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 11:16:04,748 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 11:16:04,749 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 11:16:04,750 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 11:16:04,751 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 11:16:04,752 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 11:16:04,752 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 11:16:04,753 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 11:16:04,753 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 11:16:04,754 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 11:16:04,755 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 11:16:04,755 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 11:16:04,756 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 11:16:04,757 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 11:16:04,759 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 11:16:04,760 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 11:16:04,761 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 11:16:04,761 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 11:16:04,762 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 11:16:04,764 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 11:16:04,764 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 11:16:04,764 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 11:16:04,765 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 11:16:04,765 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 11:16:04,765 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 11:16:04,766 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 11:16:04,766 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 11:16:04,767 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 11:16:04,767 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 11:16:04,768 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 11:16:04,768 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 11:16:04,768 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 11:16:04,768 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 11:16:04,769 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 11:16:04,769 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 11:16:04,770 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 11:16:04,770 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_adb20942-02ac-4af4-9d6c-b2ba9a3ddc86/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2019-12-07 11:16:04,780 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 11:16:04,780 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 11:16:04,781 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 11:16:04,781 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 11:16:04,781 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 11:16:04,781 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 11:16:04,781 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 11:16:04,782 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 11:16:04,782 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 11:16:04,782 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 11:16:04,782 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 11:16:04,782 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 11:16:04,783 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 11:16:04,783 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 11:16:04,783 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 11:16:04,783 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 11:16:04,783 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 11:16:04,783 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-12-07 11:16:04,783 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-12-07 11:16:04,783 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 11:16:04,784 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 11:16:04,784 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 11:16:04,784 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 11:16:04,784 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 11:16:04,784 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 11:16:04,784 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 11:16:04,784 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 11:16:04,784 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 11:16:04,785 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 11:16:04,785 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 11:16:04,785 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 11:16:04,785 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2019-12-07 11:16:04,785 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-12-07 11:16:04,785 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 11:16:04,785 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 11:16:04,785 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 11:16:04,786 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_adb20942-02ac-4af4-9d6c-b2ba9a3ddc86/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 [2019-12-07 11:16:04,961 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 11:16:04,969 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 11:16:04,971 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 11:16:04,972 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 11:16:04,972 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 11:16:04,973 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_adb20942-02ac-4af4-9d6c-b2ba9a3ddc86/bin/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_0710.c [2019-12-07 11:16:05,009 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_adb20942-02ac-4af4-9d6c-b2ba9a3ddc86/bin/utaipan/data/b0b702467/ea9cf6af49c045b4beed1568e1373f95/FLAGcf7d29bf9 [2019-12-07 11:16:05,342 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 11:16:05,343 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_adb20942-02ac-4af4-9d6c-b2ba9a3ddc86/sv-benchmarks/c/float-newlib/float_req_bl_0710.c [2019-12-07 11:16:05,347 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_adb20942-02ac-4af4-9d6c-b2ba9a3ddc86/bin/utaipan/data/b0b702467/ea9cf6af49c045b4beed1568e1373f95/FLAGcf7d29bf9 [2019-12-07 11:16:05,356 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_adb20942-02ac-4af4-9d6c-b2ba9a3ddc86/bin/utaipan/data/b0b702467/ea9cf6af49c045b4beed1568e1373f95 [2019-12-07 11:16:05,358 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 11:16:05,358 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 11:16:05,359 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 11:16:05,359 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 11:16:05,361 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 11:16:05,362 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 11:16:05" (1/1) ... [2019-12-07 11:16:05,363 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41944eff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:16:05, skipping insertion in model container [2019-12-07 11:16:05,364 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 11:16:05" (1/1) ... [2019-12-07 11:16:05,368 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 11:16:05,381 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 11:16:05,495 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 11:16:05,499 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 11:16:05,520 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 11:16:05,536 INFO L208 MainTranslator]: Completed translation [2019-12-07 11:16:05,536 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:16:05 WrapperNode [2019-12-07 11:16:05,537 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 11:16:05,537 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 11:16:05,537 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 11:16:05,537 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 11:16:05,572 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:16:05" (1/1) ... [2019-12-07 11:16:05,580 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:16:05" (1/1) ... [2019-12-07 11:16:05,595 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 11:16:05,595 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 11:16:05,595 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 11:16:05,595 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 11:16:05,602 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:16:05" (1/1) ... [2019-12-07 11:16:05,602 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:16:05" (1/1) ... [2019-12-07 11:16:05,605 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:16:05" (1/1) ... [2019-12-07 11:16:05,605 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:16:05" (1/1) ... [2019-12-07 11:16:05,611 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:16:05" (1/1) ... [2019-12-07 11:16:05,615 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:16:05" (1/1) ... [2019-12-07 11:16:05,617 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:16:05" (1/1) ... [2019-12-07 11:16:05,619 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 11:16:05,619 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 11:16:05,620 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 11:16:05,620 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 11:16:05,620 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:16:05" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_adb20942-02ac-4af4-9d6c-b2ba9a3ddc86/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 [2019-12-07 11:16:05,659 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 11:16:05,659 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2019-12-07 11:16:05,659 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-12-07 11:16:05,659 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 11:16:05,659 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 11:16:05,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2019-12-07 11:16:05,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-12-07 11:16:05,660 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 11:16:06,518 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 11:16:06,518 INFO L287 CfgBuilder]: Removed 14 assume(true) statements. [2019-12-07 11:16:06,519 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 11:16:06 BoogieIcfgContainer [2019-12-07 11:16:06,519 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 11:16:06,520 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 11:16:06,520 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 11:16:06,522 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 11:16:06,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 11:16:05" (1/3) ... [2019-12-07 11:16:06,522 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13bb2c61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 11:16:06, skipping insertion in model container [2019-12-07 11:16:06,523 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:16:05" (2/3) ... [2019-12-07 11:16:06,523 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13bb2c61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 11:16:06, skipping insertion in model container [2019-12-07 11:16:06,523 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 11:16:06" (3/3) ... [2019-12-07 11:16:06,524 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_0710.c [2019-12-07 11:16:06,530 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 11:16:06,535 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 11:16:06,542 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 11:16:06,557 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 11:16:06,557 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 11:16:06,557 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 11:16:06,557 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 11:16:06,557 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 11:16:06,557 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 11:16:06,557 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 11:16:06,557 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 11:16:06,566 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2019-12-07 11:16:06,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 11:16:06,570 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 11:16:06,571 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 11:16:06,571 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 11:16:06,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:16:06,575 INFO L82 PathProgramCache]: Analyzing trace with hash 860611220, now seen corresponding path program 1 times [2019-12-07 11:16:06,582 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 11:16:06,582 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [495860143] [2019-12-07 11:16:06,582 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_adb20942-02ac-4af4-9d6c-b2ba9a3ddc86/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 [2019-12-07 11:16:06,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:16:06,714 INFO L264 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 1 conjunts are in the unsatisfiable core [2019-12-07 11:16:06,717 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:16:06,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 11:16:06,726 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 11:16:06,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 11:16:06,730 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [495860143] [2019-12-07 11:16:06,730 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 11:16:06,730 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-12-07 11:16:06,731 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632536637] [2019-12-07 11:16:06,734 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-07 11:16:06,734 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 11:16:06,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-07 11:16:06,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 11:16:06,744 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 2 states. [2019-12-07 11:16:06,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:16:06,757 INFO L93 Difference]: Finished difference Result 67 states and 102 transitions. [2019-12-07 11:16:06,757 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-07 11:16:06,758 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-12-07 11:16:06,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 11:16:06,765 INFO L225 Difference]: With dead ends: 67 [2019-12-07 11:16:06,765 INFO L226 Difference]: Without dead ends: 31 [2019-12-07 11:16:06,767 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 [2019-12-07 11:16:06,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-12-07 11:16:06,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2019-12-07 11:16:06,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-12-07 11:16:06,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 41 transitions. [2019-12-07 11:16:06,791 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 41 transitions. Word has length 10 [2019-12-07 11:16:06,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 11:16:06,791 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 41 transitions. [2019-12-07 11:16:06,791 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-07 11:16:06,791 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 41 transitions. [2019-12-07 11:16:06,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 11:16:06,792 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 11:16:06,792 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 11:16:06,993 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-12-07 11:16:06,993 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 11:16:06,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:16:06,994 INFO L82 PathProgramCache]: Analyzing trace with hash 1279985196, now seen corresponding path program 1 times [2019-12-07 11:16:06,995 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 11:16:06,996 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [883236915] [2019-12-07 11:16:06,996 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_adb20942-02ac-4af4-9d6c-b2ba9a3ddc86/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 [2019-12-07 11:16:07,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:16:07,172 INFO L264 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 16 conjunts are in the unsatisfiable core [2019-12-07 11:16:07,174 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:16:16,134 WARN L194 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2019-12-07 11:16:16,134 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [883236915] [2019-12-07 11:16:16,135 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") [2019-12-07 11:16:16,135 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1652250984] [2019-12-07 11:16:16,135 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_adb20942-02ac-4af4-9d6c-b2ba9a3ddc86/bin/utaipan/cvc4 Starting monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-12-07 11:16:16,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:16:16,475 INFO L264 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 15 conjunts are in the unsatisfiable core [2019-12-07 11:16:16,476 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@36127155 [2019-12-07 11:16:16,476 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1639616030] [2019-12-07 11:16:16,476 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_adb20942-02ac-4af4-9d6c-b2ba9a3ddc86/bin/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 11:16:16,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:16:16,574 INFO L264 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 15 conjunts are in the unsatisfiable core [2019-12-07 11:16:16,575 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@36127155 [2019-12-07 11:16:16,575 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2019-12-07 11:16:16,575 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2019-12-07 11:16:16,575 ERROR L206 FreeRefinementEngine]: Strategy WALRUS failed to provide any proof altough trace is infeasible [2019-12-07 11:16:16,575 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 11:16:17,180 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk,3 mathsat -unsat_core_generation=3,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 11:16:17,197 WARN L229 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2019-12-07 11:16:17,198 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 11:16:17 BoogieIcfgContainer [2019-12-07 11:16:17,198 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 11:16:17,199 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 11:16:17,199 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 11:16:17,199 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 11:16:17,199 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 11:16:06" (3/4) ... [2019-12-07 11:16:17,202 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-12-07 11:16:17,202 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 11:16:17,204 INFO L168 Benchmark]: Toolchain (without parser) took 11844.86 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.5 MB). Free memory was 953.7 MB in the beginning and 1.0 GB in the end (delta: -59.2 MB). Peak memory consumption was 70.3 MB. Max. memory is 11.5 GB. [2019-12-07 11:16:17,204 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 11:16:17,205 INFO L168 Benchmark]: CACSL2BoogieTranslator took 177.77 ms. Allocated memory is still 1.0 GB. Free memory was 953.7 MB in the beginning and 937.6 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2019-12-07 11:16:17,205 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.09 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.5 MB). Free memory was 937.6 MB in the beginning and 1.1 GB in the end (delta: -180.7 MB). Peak memory consumption was 10.1 MB. Max. memory is 11.5 GB. [2019-12-07 11:16:17,206 INFO L168 Benchmark]: Boogie Preprocessor took 24.10 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. [2019-12-07 11:16:17,206 INFO L168 Benchmark]: RCFGBuilder took 899.65 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: 28.6 MB). Peak memory consumption was 28.6 MB. Max. memory is 11.5 GB. [2019-12-07 11:16:17,207 INFO L168 Benchmark]: TraceAbstraction took 10678.47 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: 76.8 MB). Peak memory consumption was 76.8 MB. Max. memory is 11.5 GB. [2019-12-07 11:16:17,207 INFO L168 Benchmark]: Witness Printer took 3.72 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. [2019-12-07 11:16:17,210 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 177.77 ms. Allocated memory is still 1.0 GB. Free memory was 953.7 MB in the beginning and 937.6 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 58.09 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.5 MB). Free memory was 937.6 MB in the beginning and 1.1 GB in the end (delta: -180.7 MB). Peak memory consumption was 10.1 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 24.10 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 899.65 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: 28.6 MB). Peak memory consumption was 28.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 10678.47 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: 76.8 MB). Peak memory consumption was 76.8 MB. Max. memory is 11.5 GB. * Witness Printer took 3.72 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: unable to decide satisfiability of path constraint. 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; [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 [L29] COND TRUE !((hx) < 0x7f800000L) [L30] return x * x + x; [L94] float res = __ieee754_sqrtf(x); [L13] return x != x; [L97] COND TRUE !isnan_float(res) [L98] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 35 locations, 1 error locations. Result: UNKNOWN, OverallTime: 10.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 46 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred 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, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 162 SizeOfPredicates, 0 NumberOfNonLiveVariables, 24 ConjunctsInSsa, 1 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...