./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1130a.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_d1dfda68-97b7-4aad-9579-8b0d893236b9/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_d1dfda68-97b7-4aad-9579-8b0d893236b9/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_d1dfda68-97b7-4aad-9579-8b0d893236b9/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_d1dfda68-97b7-4aad-9579-8b0d893236b9/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1130a.c -s /tmp/vcloud-vcloud-master/worker/run_dir_d1dfda68-97b7-4aad-9579-8b0d893236b9/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_d1dfda68-97b7-4aad-9579-8b0d893236b9/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0234da8cdb9a2c3c5c10a76d147ba9cd027ddd81 ......................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_d1dfda68-97b7-4aad-9579-8b0d893236b9/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_d1dfda68-97b7-4aad-9579-8b0d893236b9/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_d1dfda68-97b7-4aad-9579-8b0d893236b9/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_d1dfda68-97b7-4aad-9579-8b0d893236b9/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1130a.c -s /tmp/vcloud-vcloud-master/worker/run_dir_d1dfda68-97b7-4aad-9579-8b0d893236b9/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_d1dfda68-97b7-4aad-9579-8b0d893236b9/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0234da8cdb9a2c3c5c10a76d147ba9cd027ddd81 ................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 07:43:04,741 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:43:04,743 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:43:04,794 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:43:04,795 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:43:04,799 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:43:04,803 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:43:04,822 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:43:04,824 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:43:04,825 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:43:04,826 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:43:04,827 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:43:04,828 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:43:04,829 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:43:04,831 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:43:04,832 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:43:04,833 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:43:04,835 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:43:04,837 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:43:04,839 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:43:04,847 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:43:04,852 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:43:04,854 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:43:04,855 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:43:04,858 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:43:04,858 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:43:04,859 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:43:04,860 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:43:04,860 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:43:04,862 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:43:04,862 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:43:04,863 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:43:04,864 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:43:04,871 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:43:04,873 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:43:04,873 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:43:04,874 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:43:04,874 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:43:04,874 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:43:04,876 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:43:04,877 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:43:04,880 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_d1dfda68-97b7-4aad-9579-8b0d893236b9/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-28 07:43:04,931 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:43:04,932 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:43:04,933 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:43:04,933 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:43:04,933 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:43:04,933 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:43:04,933 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:43:04,934 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:43:04,934 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:43:04,934 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:43:04,934 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:43:04,934 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:43:04,935 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:43:04,935 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:43:04,935 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:43:04,936 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:43:04,936 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:43:04,936 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:43:04,936 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:43:04,937 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:43:04,937 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:43:04,937 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:43:04,937 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:43:04,937 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:43:04,937 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:43:04,938 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:43:04,938 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:43:04,938 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:43:04,938 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:43:04,938 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:43:04,939 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:43:04,939 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:43:04,939 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:43:04,939 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:43:04,940 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:43:04,940 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:43:04,940 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:43:04,940 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:43:04,943 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:43:04,943 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:43:04,943 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_d1dfda68-97b7-4aad-9579-8b0d893236b9/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_d1dfda68-97b7-4aad-9579-8b0d893236b9/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0234da8cdb9a2c3c5c10a76d147ba9cd027ddd81 [2020-11-28 07:43:05,191 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:43:05,227 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:43:05,232 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:43:05,233 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:43:05,234 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:43:05,236 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_d1dfda68-97b7-4aad-9579-8b0d893236b9/bin/utaipan/../../sv-benchmarks/c/float-newlib/double_req_bl_1130a.c [2020-11-28 07:43:05,309 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d1dfda68-97b7-4aad-9579-8b0d893236b9/bin/utaipan/data/d09674804/283aa0512a294329af99146d3934c715/FLAG88a3df10a [2020-11-28 07:43:05,778 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:43:05,782 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_d1dfda68-97b7-4aad-9579-8b0d893236b9/sv-benchmarks/c/float-newlib/double_req_bl_1130a.c [2020-11-28 07:43:05,791 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d1dfda68-97b7-4aad-9579-8b0d893236b9/bin/utaipan/data/d09674804/283aa0512a294329af99146d3934c715/FLAG88a3df10a [2020-11-28 07:43:06,147 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_d1dfda68-97b7-4aad-9579-8b0d893236b9/bin/utaipan/data/d09674804/283aa0512a294329af99146d3934c715 [2020-11-28 07:43:06,149 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:43:06,151 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:43:06,152 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:43:06,153 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:43:06,156 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:43:06,156 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:43:06" (1/1) ... [2020-11-28 07:43:06,158 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26c774a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:06, skipping insertion in model container [2020-11-28 07:43:06,159 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:43:06" (1/1) ... [2020-11-28 07:43:06,167 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:43:06,190 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:43:06,432 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:43:06,440 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:43:06,490 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:43:06,518 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:43:06,520 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:06 WrapperNode [2020-11-28 07:43:06,520 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:43:06,521 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:43:06,522 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:43:06,522 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:43:06,531 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:06" (1/1) ... [2020-11-28 07:43:06,543 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:06" (1/1) ... [2020-11-28 07:43:06,583 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:43:06,584 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:43:06,584 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:43:06,584 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:43:06,594 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:06" (1/1) ... [2020-11-28 07:43:06,594 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:06" (1/1) ... [2020-11-28 07:43:06,600 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:06" (1/1) ... [2020-11-28 07:43:06,601 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:06" (1/1) ... [2020-11-28 07:43:06,614 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:06" (1/1) ... [2020-11-28 07:43:06,621 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:06" (1/1) ... [2020-11-28 07:43:06,625 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:06" (1/1) ... [2020-11-28 07:43:06,630 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:43:06,631 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:43:06,631 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:43:06,632 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:43:06,649 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:06" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d1dfda68-97b7-4aad-9579-8b0d893236b9/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 [2020-11-28 07:43:06,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 07:43:06,778 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:43:06,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 07:43:06,779 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-11-28 07:43:06,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-28 07:43:06,779 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:43:06,779 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:43:06,779 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-28 07:43:06,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-11-28 07:43:06,781 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 07:43:07,965 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:43:07,966 INFO L298 CfgBuilder]: Removed 26 assume(true) statements. [2020-11-28 07:43:07,968 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:43:07 BoogieIcfgContainer [2020-11-28 07:43:07,968 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:43:07,969 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:43:07,969 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:43:07,973 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:43:07,973 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:43:06" (1/3) ... [2020-11-28 07:43:07,974 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b52882b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:43:07, skipping insertion in model container [2020-11-28 07:43:07,974 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:06" (2/3) ... [2020-11-28 07:43:07,975 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b52882b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:43:07, skipping insertion in model container [2020-11-28 07:43:07,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:43:07" (3/3) ... [2020-11-28 07:43:07,976 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1130a.c [2020-11-28 07:43:07,987 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:43:07,992 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 07:43:08,004 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 07:43:08,028 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:43:08,028 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:43:08,029 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:43:08,029 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:43:08,029 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:43:08,029 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:43:08,029 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:43:08,030 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:43:08,043 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-11-28 07:43:08,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 07:43:08,049 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:43:08,049 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:43:08,050 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:43:08,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:43:08,055 INFO L82 PathProgramCache]: Analyzing trace with hash -2026615160, now seen corresponding path program 1 times [2020-11-28 07:43:08,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:43:08,065 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050272229] [2020-11-28 07:43:08,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:43:08,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:43:08,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:43:08,200 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050272229] [2020-11-28 07:43:08,201 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:43:08,201 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:43:08,202 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887557561] [2020-11-28 07:43:08,206 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 07:43:08,207 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:43:08,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 07:43:08,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 07:43:08,224 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 2 states. [2020-11-28 07:43:08,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:43:08,252 INFO L93 Difference]: Finished difference Result 88 states and 149 transitions. [2020-11-28 07:43:08,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 07:43:08,253 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-11-28 07:43:08,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:43:08,274 INFO L225 Difference]: With dead ends: 88 [2020-11-28 07:43:08,274 INFO L226 Difference]: Without dead ends: 42 [2020-11-28 07:43:08,282 INFO L677 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 [2020-11-28 07:43:08,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-11-28 07:43:08,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-11-28 07:43:08,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-11-28 07:43:08,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 60 transitions. [2020-11-28 07:43:08,329 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 60 transitions. Word has length 10 [2020-11-28 07:43:08,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:43:08,329 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 60 transitions. [2020-11-28 07:43:08,330 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 07:43:08,330 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 60 transitions. [2020-11-28 07:43:08,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-28 07:43:08,332 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:43:08,332 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:43:08,333 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 07:43:08,333 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:43:08,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:43:08,336 INFO L82 PathProgramCache]: Analyzing trace with hash -344485851, now seen corresponding path program 1 times [2020-11-28 07:43:08,336 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:43:08,336 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741570483] [2020-11-28 07:43:08,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:43:08,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:43:08,434 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:43:08,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:43:08,508 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:43:08,543 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-28 07:43:08,543 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 07:43:08,545 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 07:43:08,595 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:43:08 BoogieIcfgContainer [2020-11-28 07:43:08,595 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:43:08,596 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:43:08,596 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:43:08,596 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:43:08,597 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:43:07" (3/4) ... [2020-11-28 07:43:08,600 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-28 07:43:08,601 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:43:08,604 INFO L168 Benchmark]: Toolchain (without parser) took 2451.36 ms. Allocated memory was 98.6 MB in the beginning and 140.5 MB in the end (delta: 41.9 MB). Free memory was 72.2 MB in the beginning and 67.5 MB in the end (delta: 4.7 MB). Peak memory consumption was 43.2 MB. Max. memory is 16.1 GB. [2020-11-28 07:43:08,605 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 98.6 MB. Free memory is still 55.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:43:08,606 INFO L168 Benchmark]: CACSL2BoogieTranslator took 368.19 ms. Allocated memory was 98.6 MB in the beginning and 140.5 MB in the end (delta: 41.9 MB). Free memory was 72.0 MB in the beginning and 113.2 MB in the end (delta: -41.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 07:43:08,607 INFO L168 Benchmark]: Boogie Procedure Inliner took 61.85 ms. Allocated memory is still 140.5 MB. Free memory was 113.2 MB in the beginning and 110.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:43:08,608 INFO L168 Benchmark]: Boogie Preprocessor took 46.50 ms. Allocated memory is still 140.5 MB. Free memory was 110.7 MB in the beginning and 108.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:43:08,609 INFO L168 Benchmark]: RCFGBuilder took 1336.67 ms. Allocated memory is still 140.5 MB. Free memory was 108.6 MB in the beginning and 93.8 MB in the end (delta: 14.8 MB). Peak memory consumption was 36.4 MB. Max. memory is 16.1 GB. [2020-11-28 07:43:08,610 INFO L168 Benchmark]: TraceAbstraction took 625.84 ms. Allocated memory is still 140.5 MB. Free memory was 93.2 MB in the beginning and 67.5 MB in the end (delta: 25.7 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. [2020-11-28 07:43:08,611 INFO L168 Benchmark]: Witness Printer took 5.37 ms. Allocated memory is still 140.5 MB. Free memory is still 67.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:43:08,620 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 98.6 MB. Free memory is still 55.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 368.19 ms. Allocated memory was 98.6 MB in the beginning and 140.5 MB in the end (delta: 41.9 MB). Free memory was 72.0 MB in the beginning and 113.2 MB in the end (delta: -41.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 61.85 ms. Allocated memory is still 140.5 MB. Free memory was 113.2 MB in the beginning and 110.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 46.50 ms. Allocated memory is still 140.5 MB. Free memory was 110.7 MB in the beginning and 108.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1336.67 ms. Allocated memory is still 140.5 MB. Free memory was 108.6 MB in the beginning and 93.8 MB in the end (delta: 14.8 MB). Peak memory consumption was 36.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 625.84 ms. Allocated memory is still 140.5 MB. Free memory was 93.2 MB in the beginning and 67.5 MB in the end (delta: 25.7 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. * Witness Printer took 5.37 ms. Allocated memory is still 140.5 MB. Free memory is still 67.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 46, overapproximation of someUnaryDOUBLEoperation at line 22, overapproximation of bitwiseAnd at line 41, overapproximation of someBinaryArithmeticDOUBLEoperation at line 47, overapproximation of someBinaryDOUBLEComparisonOperation at line 192, overapproximation of bitwiseXor at line 42. Possible FailurePath: [L20-L23] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L184] double x = 0.0; [L185] double y = __VERIFIER_nondet_double(); [L187] COND TRUE y < 0.0 || y > 0.0 [L26] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L27] __uint32_t lx, ly, lz; VAL [one_fmod=1, Zero_fmod={6:0}] [L30] ieee_double_shape_type ew_u; [L31] ew_u.value = (x) [L32] EXPR ew_u.parts.msw [L32] (hx) = ew_u.parts.msw [L33] EXPR ew_u.parts.lsw [L33] (lx) = ew_u.parts.lsw [L36] ieee_double_shape_type ew_u; [L37] ew_u.value = (y) [L38] EXPR ew_u.parts.msw [L38] (hy) = ew_u.parts.msw [L39] EXPR ew_u.parts.lsw [L39] (ly) = ew_u.parts.lsw [L41] sx = hx & 0x80000000 [L42] hx ^= sx [L43] hy &= 0x7fffffff VAL [one_fmod=1, Zero_fmod={6:0}] [L45-L46] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L47] return (x * y) / (x * y); VAL [one_fmod=1, Zero_fmod={6:0}] [L189] double res = fmod_double(x, y); [L192] EXPR res == 0.0 && __signbit_double(res) == 0 VAL [one_fmod=1, Zero_fmod={6:0}] [L192] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L3] __assert_fail("0", "double_req_bl_1130a.c", 3, "reach_error") VAL [one_fmod=1, Zero_fmod={6:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 45 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 64 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=45occurred 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, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 81 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, ACCELERATED_INTERPOLATION: 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 0.2.0-a4ecdab [2020-11-28 07:43:11,218 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:43:11,220 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:43:11,278 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:43:11,279 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:43:11,286 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:43:11,289 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:43:11,294 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:43:11,296 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:43:11,298 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:43:11,299 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:43:11,301 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:43:11,301 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:43:11,303 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:43:11,304 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:43:11,306 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:43:11,307 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:43:11,308 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:43:11,310 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:43:11,313 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:43:11,315 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:43:11,317 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:43:11,319 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:43:11,320 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:43:11,324 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:43:11,324 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:43:11,325 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:43:11,326 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:43:11,326 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:43:11,328 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:43:11,328 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:43:11,333 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:43:11,335 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:43:11,337 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:43:11,338 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:43:11,339 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:43:11,340 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:43:11,340 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:43:11,340 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:43:11,344 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:43:11,345 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:43:11,346 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_d1dfda68-97b7-4aad-9579-8b0d893236b9/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-11-28 07:43:11,394 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:43:11,398 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:43:11,400 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:43:11,400 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:43:11,400 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:43:11,400 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:43:11,401 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:43:11,401 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:43:11,401 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:43:11,403 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:43:11,404 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:43:11,404 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:43:11,404 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:43:11,405 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:43:11,405 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:43:11,405 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:43:11,405 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:43:11,405 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-28 07:43:11,406 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-28 07:43:11,406 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:43:11,406 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:43:11,406 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:43:11,407 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:43:11,407 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:43:11,407 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 07:43:11,407 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:43:11,408 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:43:11,408 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:43:11,408 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:43:11,408 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:43:11,409 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:43:11,409 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-11-28 07:43:11,409 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-28 07:43:11,409 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:43:11,410 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:43:11,410 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:43:11,410 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_d1dfda68-97b7-4aad-9579-8b0d893236b9/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_d1dfda68-97b7-4aad-9579-8b0d893236b9/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0234da8cdb9a2c3c5c10a76d147ba9cd027ddd81 [2020-11-28 07:43:11,835 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:43:11,864 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:43:11,868 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:43:11,870 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:43:11,872 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:43:11,873 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_d1dfda68-97b7-4aad-9579-8b0d893236b9/bin/utaipan/../../sv-benchmarks/c/float-newlib/double_req_bl_1130a.c [2020-11-28 07:43:11,961 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d1dfda68-97b7-4aad-9579-8b0d893236b9/bin/utaipan/data/f6ff4075e/9b36edfde93841a2a9f11c1ef7329a43/FLAG98fda63df [2020-11-28 07:43:12,474 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:43:12,477 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_d1dfda68-97b7-4aad-9579-8b0d893236b9/sv-benchmarks/c/float-newlib/double_req_bl_1130a.c [2020-11-28 07:43:12,488 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d1dfda68-97b7-4aad-9579-8b0d893236b9/bin/utaipan/data/f6ff4075e/9b36edfde93841a2a9f11c1ef7329a43/FLAG98fda63df [2020-11-28 07:43:12,790 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_d1dfda68-97b7-4aad-9579-8b0d893236b9/bin/utaipan/data/f6ff4075e/9b36edfde93841a2a9f11c1ef7329a43 [2020-11-28 07:43:12,792 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:43:12,793 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:43:12,795 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:43:12,795 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:43:12,798 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:43:12,799 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:43:12" (1/1) ... [2020-11-28 07:43:12,801 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@303ee1b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:12, skipping insertion in model container [2020-11-28 07:43:12,801 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:43:12" (1/1) ... [2020-11-28 07:43:12,820 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:43:12,844 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:43:13,026 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:43:13,080 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:43:13,155 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:43:13,181 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:43:13,182 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:13 WrapperNode [2020-11-28 07:43:13,182 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:43:13,184 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:43:13,184 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:43:13,184 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:43:13,192 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:13" (1/1) ... [2020-11-28 07:43:13,219 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:13" (1/1) ... [2020-11-28 07:43:13,250 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:43:13,251 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:43:13,251 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:43:13,251 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:43:13,260 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:13" (1/1) ... [2020-11-28 07:43:13,260 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:13" (1/1) ... [2020-11-28 07:43:13,265 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:13" (1/1) ... [2020-11-28 07:43:13,266 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:13" (1/1) ... [2020-11-28 07:43:13,279 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:13" (1/1) ... [2020-11-28 07:43:13,287 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:13" (1/1) ... [2020-11-28 07:43:13,290 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:13" (1/1) ... [2020-11-28 07:43:13,308 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:43:13,310 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:43:13,310 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:43:13,310 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:43:13,313 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:13" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d1dfda68-97b7-4aad-9579-8b0d893236b9/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 [2020-11-28 07:43:13,395 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2020-11-28 07:43:13,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-11-28 07:43:13,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-28 07:43:13,398 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:43:13,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8 [2020-11-28 07:43:13,398 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-28 07:43:13,399 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:43:13,399 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:43:13,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-11-28 07:43:13,399 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 07:43:18,014 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:43:18,014 INFO L298 CfgBuilder]: Removed 26 assume(true) statements. [2020-11-28 07:43:18,016 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:43:18 BoogieIcfgContainer [2020-11-28 07:43:18,016 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:43:18,018 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:43:18,018 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:43:18,021 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:43:18,021 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:43:12" (1/3) ... [2020-11-28 07:43:18,050 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a9cdb77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:43:18, skipping insertion in model container [2020-11-28 07:43:18,050 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:13" (2/3) ... [2020-11-28 07:43:18,050 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a9cdb77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:43:18, skipping insertion in model container [2020-11-28 07:43:18,050 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:43:18" (3/3) ... [2020-11-28 07:43:18,052 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1130a.c [2020-11-28 07:43:18,062 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:43:18,072 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 07:43:18,086 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 07:43:18,118 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:43:18,118 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:43:18,119 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:43:18,119 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:43:18,119 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:43:18,119 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:43:18,119 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:43:18,119 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:43:18,152 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states. [2020-11-28 07:43:18,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 07:43:18,162 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:43:18,162 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:43:18,163 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:43:18,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:43:18,183 INFO L82 PathProgramCache]: Analyzing trace with hash 464220005, now seen corresponding path program 1 times [2020-11-28 07:43:18,202 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:43:18,203 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [701517319] [2020-11-28 07:43:18,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d1dfda68-97b7-4aad-9579-8b0d893236b9/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 [2020-11-28 07:43:19,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:43:19,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-28 07:43:19,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:43:19,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:43:19,287 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:43:19,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:43:19,292 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [701517319] [2020-11-28 07:43:19,293 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:43:19,293 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-28 07:43:19,294 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420949826] [2020-11-28 07:43:19,298 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 07:43:19,298 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:43:19,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 07:43:19,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 07:43:19,314 INFO L87 Difference]: Start difference. First operand 62 states. Second operand 2 states. [2020-11-28 07:43:19,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:43:19,337 INFO L93 Difference]: Finished difference Result 120 states and 209 transitions. [2020-11-28 07:43:19,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 07:43:19,339 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-11-28 07:43:19,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:43:19,349 INFO L225 Difference]: With dead ends: 120 [2020-11-28 07:43:19,349 INFO L226 Difference]: Without dead ends: 57 [2020-11-28 07:43:19,352 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 07:43:19,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-11-28 07:43:19,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2020-11-28 07:43:19,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-11-28 07:43:19,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 84 transitions. [2020-11-28 07:43:19,386 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 84 transitions. Word has length 11 [2020-11-28 07:43:19,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:43:19,386 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 84 transitions. [2020-11-28 07:43:19,387 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 07:43:19,387 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 84 transitions. [2020-11-28 07:43:19,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-28 07:43:19,387 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:43:19,388 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:43:19,608 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-28 07:43:19,609 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:43:19,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:43:19,610 INFO L82 PathProgramCache]: Analyzing trace with hash 1051323842, now seen corresponding path program 1 times [2020-11-28 07:43:19,611 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:43:19,612 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [452569548] [2020-11-28 07:43:19,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d1dfda68-97b7-4aad-9579-8b0d893236b9/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 [2020-11-28 07:43:21,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:43:21,249 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:43:22,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:43:22,873 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:43:23,005 INFO L173 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2020-11-28 07:43:23,006 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 07:43:23,207 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-28 07:43:23,249 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:43:23 BoogieIcfgContainer [2020-11-28 07:43:23,249 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:43:23,250 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:43:23,250 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:43:23,251 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:43:23,251 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:43:18" (3/4) ... [2020-11-28 07:43:23,253 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-28 07:43:23,304 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_d1dfda68-97b7-4aad-9579-8b0d893236b9/bin/utaipan/witness.graphml [2020-11-28 07:43:23,304 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:43:23,306 INFO L168 Benchmark]: Toolchain (without parser) took 10511.69 ms. Allocated memory was 62.9 MB in the beginning and 83.9 MB in the end (delta: 21.0 MB). Free memory was 43.8 MB in the beginning and 49.5 MB in the end (delta: -5.7 MB). Peak memory consumption was 14.9 MB. Max. memory is 16.1 GB. [2020-11-28 07:43:23,307 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 62.9 MB. Free memory is still 45.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:43:23,308 INFO L168 Benchmark]: CACSL2BoogieTranslator took 388.06 ms. Allocated memory is still 62.9 MB. Free memory was 43.6 MB in the beginning and 43.2 MB in the end (delta: 451.0 kB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-28 07:43:23,308 INFO L168 Benchmark]: Boogie Procedure Inliner took 66.50 ms. Allocated memory is still 62.9 MB. Free memory was 43.2 MB in the beginning and 40.9 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:43:23,309 INFO L168 Benchmark]: Boogie Preprocessor took 57.93 ms. Allocated memory is still 62.9 MB. Free memory was 40.9 MB in the beginning and 38.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:43:23,313 INFO L168 Benchmark]: RCFGBuilder took 4706.55 ms. Allocated memory was 62.9 MB in the beginning and 83.9 MB in the end (delta: 21.0 MB). Free memory was 38.4 MB in the beginning and 42.0 MB in the end (delta: -3.6 MB). Peak memory consumption was 18.8 MB. Max. memory is 16.1 GB. [2020-11-28 07:43:23,313 INFO L168 Benchmark]: TraceAbstraction took 5231.83 ms. Allocated memory is still 83.9 MB. Free memory was 41.3 MB in the beginning and 52.2 MB in the end (delta: -10.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:43:23,314 INFO L168 Benchmark]: Witness Printer took 53.87 ms. Allocated memory is still 83.9 MB. Free memory was 51.6 MB in the beginning and 49.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:43:23,317 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 62.9 MB. Free memory is still 45.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 388.06 ms. Allocated memory is still 62.9 MB. Free memory was 43.6 MB in the beginning and 43.2 MB in the end (delta: 451.0 kB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 66.50 ms. Allocated memory is still 62.9 MB. Free memory was 43.2 MB in the beginning and 40.9 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 57.93 ms. Allocated memory is still 62.9 MB. Free memory was 40.9 MB in the beginning and 38.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 4706.55 ms. Allocated memory was 62.9 MB in the beginning and 83.9 MB in the end (delta: 21.0 MB). Free memory was 38.4 MB in the beginning and 42.0 MB in the end (delta: -3.6 MB). Peak memory consumption was 18.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5231.83 ms. Allocated memory is still 83.9 MB. Free memory was 41.3 MB in the beginning and 52.2 MB in the end (delta: -10.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 53.87 ms. Allocated memory is still 83.9 MB. Free memory was 51.6 MB in the beginning and 49.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L20-L23] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; VAL [one_fmod=1.0, Zero_fmod={2:0}] [L184] double x = 0.0; [L185] double y = __VERIFIER_nondet_double(); [L187] COND TRUE y < 0.0 || y > 0.0 [L26] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L27] __uint32_t lx, ly, lz; VAL [one_fmod=1.0, Zero_fmod={2:0}] [L30] ieee_double_shape_type ew_u; [L31] ew_u.value = (x) [L32] EXPR ew_u.parts.msw [L32] (hx) = ew_u.parts.msw [L33] EXPR ew_u.parts.lsw [L33] (lx) = ew_u.parts.lsw [L36] ieee_double_shape_type ew_u; [L37] ew_u.value = (y) [L38] EXPR ew_u.parts.msw [L38] (hy) = ew_u.parts.msw [L39] EXPR ew_u.parts.lsw [L39] (ly) = ew_u.parts.lsw [L41] sx = hx & 0x80000000 [L42] hx ^= sx [L43] hy &= 0x7fffffff VAL [one_fmod=1.0, Zero_fmod={2:0}] [L45-L46] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L47] return (x * y) / (x * y); VAL [one_fmod=1.0, Zero_fmod={2:0}] [L189] double res = fmod_double(x, y); [L192] EXPR res == 0.0 && __signbit_double(res) == 0 VAL [one_fmod=1.0, Zero_fmod={2:0}] [L192] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L3] __assert_fail("0", "double_req_bl_1130a.c", 3, "reach_error") VAL [one_fmod=1.0, Zero_fmod={2:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 62 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 5.0s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 89 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 20 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=62occurred 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, 2.5s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 200 SizeOfPredicates, 0 NumberOfNonLiveVariables, 52 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, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...