./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cbmc-regression/float-no-simp7.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_8281970d-2941-41c4-8e0c-836675fd378b/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_8281970d-2941-41c4-8e0c-836675fd378b/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_8281970d-2941-41c4-8e0c-836675fd378b/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_8281970d-2941-41c4-8e0c-836675fd378b/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float-no-simp7.c -s /tmp/vcloud-vcloud-master/worker/run_dir_8281970d-2941-41c4-8e0c-836675fd378b/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_8281970d-2941-41c4-8e0c-836675fd378b/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 ad220425e59782d2842875bc5488a6e9ea4ef5ae ............................................................................................................................................................................................................................................... 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_8281970d-2941-41c4-8e0c-836675fd378b/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_8281970d-2941-41c4-8e0c-836675fd378b/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_8281970d-2941-41c4-8e0c-836675fd378b/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_8281970d-2941-41c4-8e0c-836675fd378b/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float-no-simp7.c -s /tmp/vcloud-vcloud-master/worker/run_dir_8281970d-2941-41c4-8e0c-836675fd378b/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_8281970d-2941-41c4-8e0c-836675fd378b/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 ad220425e59782d2842875bc5488a6e9ea4ef5ae ........................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 09:39:06,884 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 09:39:06,886 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 09:39:06,923 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 09:39:06,924 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 09:39:06,925 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 09:39:06,927 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 09:39:06,929 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 09:39:06,931 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 09:39:06,932 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 09:39:06,933 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 09:39:06,934 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 09:39:06,934 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 09:39:06,936 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 09:39:06,937 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 09:39:06,938 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 09:39:06,939 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 09:39:06,940 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 09:39:06,942 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 09:39:06,944 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 09:39:06,946 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 09:39:06,947 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 09:39:06,948 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 09:39:06,949 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 09:39:06,952 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 09:39:06,953 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 09:39:06,953 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 09:39:06,954 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 09:39:06,955 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 09:39:06,956 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 09:39:06,956 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 09:39:06,957 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 09:39:06,958 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 09:39:06,959 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 09:39:06,960 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 09:39:06,960 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 09:39:06,961 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 09:39:06,961 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 09:39:06,962 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 09:39:06,962 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 09:39:06,963 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 09:39:06,964 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_8281970d-2941-41c4-8e0c-836675fd378b/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 09:39:06,986 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 09:39:06,986 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 09:39:06,987 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 09:39:06,987 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 09:39:06,987 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 09:39:06,987 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 09:39:06,987 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 09:39:06,988 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 09:39:06,988 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 09:39:06,988 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 09:39:06,988 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 09:39:06,988 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 09:39:06,988 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 09:39:06,988 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 09:39:06,989 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 09:39:06,989 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 09:39:06,989 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 09:39:06,989 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 09:39:06,990 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 09:39:06,990 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 09:39:06,990 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 09:39:06,990 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 09:39:06,990 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 09:39:06,990 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 09:39:06,990 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 09:39:06,990 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 09:39:06,990 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 09:39:06,990 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 09:39:06,991 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 09:39:06,991 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 09:39:06,991 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 09:39:06,991 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 09:39:06,991 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 09:39:06,991 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 09:39:06,991 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 09:39:06,991 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 09:39:06,992 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 09:39:06,992 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 09:39:06,992 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 09:39:06,992 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_8281970d-2941-41c4-8e0c-836675fd378b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_8281970d-2941-41c4-8e0c-836675fd378b/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ad220425e59782d2842875bc5488a6e9ea4ef5ae [2020-12-09 09:39:07,192 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 09:39:07,211 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 09:39:07,214 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 09:39:07,214 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 09:39:07,215 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 09:39:07,216 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_8281970d-2941-41c4-8e0c-836675fd378b/bin/utaipan/../../sv-benchmarks/c/floats-cbmc-regression/float-no-simp7.c [2020-12-09 09:39:07,258 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8281970d-2941-41c4-8e0c-836675fd378b/bin/utaipan/data/8f26c5b1f/3e20b2c8e2e94d259a5e8efaa9c00a59/FLAGaf9667ac0 [2020-12-09 09:39:07,622 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 09:39:07,622 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_8281970d-2941-41c4-8e0c-836675fd378b/sv-benchmarks/c/floats-cbmc-regression/float-no-simp7.c [2020-12-09 09:39:07,627 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8281970d-2941-41c4-8e0c-836675fd378b/bin/utaipan/data/8f26c5b1f/3e20b2c8e2e94d259a5e8efaa9c00a59/FLAGaf9667ac0 [2020-12-09 09:39:07,637 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_8281970d-2941-41c4-8e0c-836675fd378b/bin/utaipan/data/8f26c5b1f/3e20b2c8e2e94d259a5e8efaa9c00a59 [2020-12-09 09:39:07,638 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 09:39:07,639 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 09:39:07,640 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 09:39:07,641 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 09:39:07,643 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 09:39:07,643 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 09:39:07" (1/1) ... [2020-12-09 09:39:07,645 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49e4b29e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:39:07, skipping insertion in model container [2020-12-09 09:39:07,645 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 09:39:07" (1/1) ... [2020-12-09 09:39:07,650 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 09:39:07,658 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 09:39:07,763 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_8281970d-2941-41c4-8e0c-836675fd378b/sv-benchmarks/c/floats-cbmc-regression/float-no-simp7.c[440,453] [2020-12-09 09:39:07,767 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 09:39:07,775 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 09:39:07,787 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_8281970d-2941-41c4-8e0c-836675fd378b/sv-benchmarks/c/floats-cbmc-regression/float-no-simp7.c[440,453] [2020-12-09 09:39:07,788 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 09:39:07,797 INFO L208 MainTranslator]: Completed translation [2020-12-09 09:39:07,797 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:39:07 WrapperNode [2020-12-09 09:39:07,797 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 09:39:07,798 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 09:39:07,798 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 09:39:07,798 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 09:39:07,804 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:39:07" (1/1) ... [2020-12-09 09:39:07,809 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:39:07" (1/1) ... [2020-12-09 09:39:07,821 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 09:39:07,822 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 09:39:07,822 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 09:39:07,822 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 09:39:07,828 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:39:07" (1/1) ... [2020-12-09 09:39:07,828 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:39:07" (1/1) ... [2020-12-09 09:39:07,829 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:39:07" (1/1) ... [2020-12-09 09:39:07,829 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:39:07" (1/1) ... [2020-12-09 09:39:07,832 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:39:07" (1/1) ... [2020-12-09 09:39:07,834 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:39:07" (1/1) ... [2020-12-09 09:39:07,835 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:39:07" (1/1) ... [2020-12-09 09:39:07,836 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 09:39:07,837 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 09:39:07,837 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 09:39:07,837 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 09:39:07,838 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:39:07" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8281970d-2941-41c4-8e0c-836675fd378b/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 [2020-12-09 09:39:07,899 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 09:39:07,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 09:39:07,899 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 09:39:07,899 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 09:39:08,039 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 09:39:08,040 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-09 09:39:08,042 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 09:39:08 BoogieIcfgContainer [2020-12-09 09:39:08,042 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 09:39:08,043 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 09:39:08,044 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 09:39:08,047 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 09:39:08,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 09:39:07" (1/3) ... [2020-12-09 09:39:08,048 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@afc395f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 09:39:08, skipping insertion in model container [2020-12-09 09:39:08,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:39:07" (2/3) ... [2020-12-09 09:39:08,048 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@afc395f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 09:39:08, skipping insertion in model container [2020-12-09 09:39:08,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 09:39:08" (3/3) ... [2020-12-09 09:39:08,050 INFO L111 eAbstractionObserver]: Analyzing ICFG float-no-simp7.c [2020-12-09 09:39:08,063 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 09:39:08,065 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 09:39:08,073 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 09:39:08,092 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 09:39:08,092 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 09:39:08,092 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 09:39:08,092 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 09:39:08,092 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 09:39:08,092 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 09:39:08,092 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 09:39:08,092 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 09:39:08,102 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2020-12-09 09:39:08,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-12-09 09:39:08,105 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:39:08,106 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-12-09 09:39:08,106 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 09:39:08,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:39:08,110 INFO L82 PathProgramCache]: Analyzing trace with hash 44367, now seen corresponding path program 1 times [2020-12-09 09:39:08,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 09:39:08,117 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194348728] [2020-12-09 09:39:08,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 09:39:08,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 09:39:08,194 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 09:39:08,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 09:39:08,212 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 09:39:08,230 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-12-09 09:39:08,230 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-09 09:39:08,231 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 09:39:08,247 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 09:39:08 BoogieIcfgContainer [2020-12-09 09:39:08,247 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 09:39:08,247 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 09:39:08,247 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 09:39:08,248 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 09:39:08,248 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 09:39:08" (3/4) ... [2020-12-09 09:39:08,250 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-09 09:39:08,250 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 09:39:08,253 INFO L168 Benchmark]: Toolchain (without parser) took 611.86 ms. Allocated memory is still 96.5 MB. Free memory was 55.3 MB in the beginning and 54.3 MB in the end (delta: 954.5 kB). Peak memory consumption was 1.7 MB. Max. memory is 16.1 GB. [2020-12-09 09:39:08,253 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 96.5 MB. Free memory is still 71.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 09:39:08,254 INFO L168 Benchmark]: CACSL2BoogieTranslator took 157.18 ms. Allocated memory is still 96.5 MB. Free memory was 55.0 MB in the beginning and 69.6 MB in the end (delta: -14.5 MB). Peak memory consumption was 6.8 MB. Max. memory is 16.1 GB. [2020-12-09 09:39:08,255 INFO L168 Benchmark]: Boogie Procedure Inliner took 22.99 ms. Allocated memory is still 96.5 MB. Free memory was 69.6 MB in the beginning and 68.2 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 09:39:08,256 INFO L168 Benchmark]: Boogie Preprocessor took 14.61 ms. Allocated memory is still 96.5 MB. Free memory was 68.2 MB in the beginning and 67.1 MB in the end (delta: 1.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-09 09:39:08,257 INFO L168 Benchmark]: RCFGBuilder took 204.66 ms. Allocated memory is still 96.5 MB. Free memory was 67.1 MB in the beginning and 66.7 MB in the end (delta: 379.0 kB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-12-09 09:39:08,257 INFO L168 Benchmark]: TraceAbstraction took 203.42 ms. Allocated memory is still 96.5 MB. Free memory was 66.2 MB in the beginning and 54.6 MB in the end (delta: 11.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-12-09 09:39:08,258 INFO L168 Benchmark]: Witness Printer took 3.19 ms. Allocated memory is still 96.5 MB. Free memory was 54.6 MB in the beginning and 54.3 MB in the end (delta: 253.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 09:39:08,262 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 96.5 MB. Free memory is still 71.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 157.18 ms. Allocated memory is still 96.5 MB. Free memory was 55.0 MB in the beginning and 69.6 MB in the end (delta: -14.5 MB). Peak memory consumption was 6.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 22.99 ms. Allocated memory is still 96.5 MB. Free memory was 69.6 MB in the beginning and 68.2 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 14.61 ms. Allocated memory is still 96.5 MB. Free memory was 68.2 MB in the beginning and 67.1 MB in the end (delta: 1.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 204.66 ms. Allocated memory is still 96.5 MB. Free memory was 67.1 MB in the beginning and 66.7 MB in the end (delta: 379.0 kB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 203.42 ms. Allocated memory is still 96.5 MB. Free memory was 66.2 MB in the beginning and 54.6 MB in the end (delta: 11.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Witness Printer took 3.19 ms. Allocated memory is still 96.5 MB. Free memory was 54.6 MB in the beginning and 54.3 MB in the end (delta: 253.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 12]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 12, overapproximation of someBinaryArithmeticFLOAToperation at line 10, overapproximation of someUnaryFLOAToperation at line 7. Possible FailurePath: [L6] float f = 0x1.9e0c22p-101f; [L7] float g = -0x1.3c9014p-50f; [L8] float target = -0x1p-149f; [L10] float result = f * g; [L12] COND TRUE !(result == target) [L12] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.1s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6occurred 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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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 0.2.0-7b2dab5 [2020-12-09 09:39:09,796 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 09:39:09,798 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 09:39:09,820 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 09:39:09,820 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 09:39:09,821 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 09:39:09,823 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 09:39:09,824 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 09:39:09,826 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 09:39:09,827 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 09:39:09,828 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 09:39:09,836 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 09:39:09,836 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 09:39:09,838 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 09:39:09,839 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 09:39:09,840 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 09:39:09,841 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 09:39:09,842 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 09:39:09,844 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 09:39:09,847 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 09:39:09,849 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 09:39:09,850 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 09:39:09,852 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 09:39:09,852 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 09:39:09,855 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 09:39:09,856 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 09:39:09,856 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 09:39:09,857 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 09:39:09,857 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 09:39:09,858 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 09:39:09,858 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 09:39:09,859 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 09:39:09,860 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 09:39:09,861 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 09:39:09,861 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 09:39:09,862 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 09:39:09,862 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 09:39:09,862 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 09:39:09,862 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 09:39:09,863 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 09:39:09,864 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 09:39:09,864 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_8281970d-2941-41c4-8e0c-836675fd378b/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-12-09 09:39:09,882 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 09:39:09,882 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 09:39:09,883 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 09:39:09,883 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 09:39:09,883 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 09:39:09,883 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 09:39:09,883 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 09:39:09,884 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 09:39:09,884 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 09:39:09,884 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 09:39:09,884 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 09:39:09,885 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 09:39:09,885 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 09:39:09,885 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 09:39:09,885 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 09:39:09,885 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 09:39:09,885 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 09:39:09,886 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-09 09:39:09,886 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-09 09:39:09,886 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 09:39:09,886 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 09:39:09,886 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 09:39:09,886 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 09:39:09,886 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 09:39:09,887 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-09 09:39:09,887 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 09:39:09,887 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 09:39:09,887 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 09:39:09,887 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 09:39:09,887 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 09:39:09,887 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-12-09 09:39:09,888 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2020-12-09 09:39:09,888 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 09:39:09,888 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 09:39:09,888 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 09:39:09,888 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_8281970d-2941-41c4-8e0c-836675fd378b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_8281970d-2941-41c4-8e0c-836675fd378b/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ad220425e59782d2842875bc5488a6e9ea4ef5ae [2020-12-09 09:39:10,154 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 09:39:10,173 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 09:39:10,174 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 09:39:10,175 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 09:39:10,176 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 09:39:10,176 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_8281970d-2941-41c4-8e0c-836675fd378b/bin/utaipan/../../sv-benchmarks/c/floats-cbmc-regression/float-no-simp7.c [2020-12-09 09:39:10,218 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8281970d-2941-41c4-8e0c-836675fd378b/bin/utaipan/data/48f9a9da8/ff764f18ceee45288242020b1a1f89f9/FLAG83e65a827 [2020-12-09 09:39:10,574 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 09:39:10,574 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_8281970d-2941-41c4-8e0c-836675fd378b/sv-benchmarks/c/floats-cbmc-regression/float-no-simp7.c [2020-12-09 09:39:10,579 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8281970d-2941-41c4-8e0c-836675fd378b/bin/utaipan/data/48f9a9da8/ff764f18ceee45288242020b1a1f89f9/FLAG83e65a827 [2020-12-09 09:39:10,588 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_8281970d-2941-41c4-8e0c-836675fd378b/bin/utaipan/data/48f9a9da8/ff764f18ceee45288242020b1a1f89f9 [2020-12-09 09:39:10,590 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 09:39:10,591 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 09:39:10,592 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 09:39:10,592 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 09:39:10,595 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 09:39:10,595 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 09:39:10" (1/1) ... [2020-12-09 09:39:10,597 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d9750f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:39:10, skipping insertion in model container [2020-12-09 09:39:10,597 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 09:39:10" (1/1) ... [2020-12-09 09:39:10,604 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 09:39:10,613 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 09:39:10,717 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_8281970d-2941-41c4-8e0c-836675fd378b/sv-benchmarks/c/floats-cbmc-regression/float-no-simp7.c[440,453] [2020-12-09 09:39:10,721 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 09:39:10,733 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 09:39:10,748 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_8281970d-2941-41c4-8e0c-836675fd378b/sv-benchmarks/c/floats-cbmc-regression/float-no-simp7.c[440,453] [2020-12-09 09:39:10,749 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 09:39:10,767 INFO L208 MainTranslator]: Completed translation [2020-12-09 09:39:10,768 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:39:10 WrapperNode [2020-12-09 09:39:10,768 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 09:39:10,768 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 09:39:10,769 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 09:39:10,769 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 09:39:10,774 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:39:10" (1/1) ... [2020-12-09 09:39:10,781 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:39:10" (1/1) ... [2020-12-09 09:39:10,798 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 09:39:10,801 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 09:39:10,801 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 09:39:10,802 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 09:39:10,809 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:39:10" (1/1) ... [2020-12-09 09:39:10,809 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:39:10" (1/1) ... [2020-12-09 09:39:10,811 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:39:10" (1/1) ... [2020-12-09 09:39:10,811 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:39:10" (1/1) ... [2020-12-09 09:39:10,815 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:39:10" (1/1) ... [2020-12-09 09:39:10,816 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:39:10" (1/1) ... [2020-12-09 09:39:10,817 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:39:10" (1/1) ... [2020-12-09 09:39:10,819 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 09:39:10,820 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 09:39:10,820 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 09:39:10,820 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 09:39:10,821 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:39:10" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8281970d-2941-41c4-8e0c-836675fd378b/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 [2020-12-09 09:39:10,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 09:39:10,873 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 09:39:10,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-12-09 09:39:10,874 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 09:39:11,202 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 09:39:11,203 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-09 09:39:11,204 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 09:39:11 BoogieIcfgContainer [2020-12-09 09:39:11,204 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 09:39:11,206 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 09:39:11,206 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 09:39:11,209 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 09:39:11,209 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 09:39:10" (1/3) ... [2020-12-09 09:39:11,210 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ef37230 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 09:39:11, skipping insertion in model container [2020-12-09 09:39:11,210 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:39:10" (2/3) ... [2020-12-09 09:39:11,210 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ef37230 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 09:39:11, skipping insertion in model container [2020-12-09 09:39:11,210 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 09:39:11" (3/3) ... [2020-12-09 09:39:11,212 INFO L111 eAbstractionObserver]: Analyzing ICFG float-no-simp7.c [2020-12-09 09:39:11,224 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 09:39:11,226 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 09:39:11,234 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 09:39:11,251 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 09:39:11,251 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 09:39:11,251 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 09:39:11,251 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 09:39:11,251 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 09:39:11,251 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 09:39:11,251 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 09:39:11,251 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 09:39:11,260 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2020-12-09 09:39:11,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-12-09 09:39:11,263 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:39:11,263 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-12-09 09:39:11,264 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 09:39:11,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:39:11,268 INFO L82 PathProgramCache]: Analyzing trace with hash 925604, now seen corresponding path program 1 times [2020-12-09 09:39:11,276 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 09:39:11,277 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [704526635] [2020-12-09 09:39:11,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8281970d-2941-41c4-8e0c-836675fd378b/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 [2020-12-09 09:39:11,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:39:11,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-09 09:39:11,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 09:39:11,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 09:39:11,432 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 09:39:11,433 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [704526635] [2020-12-09 09:39:11,433 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 09:39:11,433 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 09:39:11,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508412434] [2020-12-09 09:39:11,437 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 09:39:11,437 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 09:39:11,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 09:39:11,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 09:39:11,448 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 4 states. [2020-12-09 09:39:11,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:39:11,556 INFO L93 Difference]: Finished difference Result 13 states and 12 transitions. [2020-12-09 09:39:11,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 09:39:11,558 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2020-12-09 09:39:11,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:39:11,562 INFO L225 Difference]: With dead ends: 13 [2020-12-09 09:39:11,562 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 09:39:11,564 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 09:39:11,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 09:39:11,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 09:39:11,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 09:39:11,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 09:39:11,580 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 4 [2020-12-09 09:39:11,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:39:11,580 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 09:39:11,580 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 09:39:11,580 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 09:39:11,580 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 09:39:11,781 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-09 09:39:11,786 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-09 09:39:11,881 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-09 09:39:11,881 INFO L262 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-09 09:39:11,881 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-09 09:39:11,881 INFO L262 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-09 09:39:11,881 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-12-09 09:39:11,882 INFO L258 CegarLoopResult]: At program point L14(lines 5 15) the Hoare annotation is: (and (= (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 13567505.0 21267647932558653966460912964485513216.0)) (fp.neg ((_ to_fp 8 24) roundNearestTiesToEven (/ 5186565.0 4722366482869645213696.0)))) ULTIMATE.start_main_~result~0) (= currentRoundingMode roundNearestTiesToEven) (= ULTIMATE.start_main_~target~0 (fp.neg ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 713623846352979940529142984724747568191373312.0))))) [2020-12-09 09:39:11,882 INFO L262 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-12-09 09:39:11,882 INFO L262 CegarLoopResult]: For program point L12-1(line 12) no Hoare annotation was computed. [2020-12-09 09:39:11,882 INFO L262 CegarLoopResult]: For program point L12-3(line 12) no Hoare annotation was computed. [2020-12-09 09:39:11,888 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-09 09:39:11,888 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-09 09:39:11,888 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-09 09:39:11,888 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-09 09:39:11,889 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-09 09:39:11,891 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-09 09:39:11,891 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-09 09:39:11,891 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-09 09:39:11,891 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-09 09:39:11,891 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-09 09:39:11,893 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 09:39:11 BoogieIcfgContainer [2020-12-09 09:39:11,893 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 09:39:11,893 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 09:39:11,893 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 09:39:11,894 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 09:39:11,894 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 09:39:11" (3/4) ... [2020-12-09 09:39:11,896 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 09:39:11,902 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-12-09 09:39:11,902 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2020-12-09 09:39:11,902 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-12-09 09:39:11,902 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 09:39:11,922 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_8281970d-2941-41c4-8e0c-836675fd378b/bin/utaipan/witness.graphml [2020-12-09 09:39:11,923 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 09:39:11,924 INFO L168 Benchmark]: Toolchain (without parser) took 1332.50 ms. Allocated memory was 52.4 MB in the beginning and 71.3 MB in the end (delta: 18.9 MB). Free memory was 34.1 MB in the beginning and 38.8 MB in the end (delta: -4.6 MB). Peak memory consumption was 12.9 MB. Max. memory is 16.1 GB. [2020-12-09 09:39:11,924 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 52.4 MB. Free memory was 34.6 MB in the beginning and 34.5 MB in the end (delta: 111.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 09:39:11,925 INFO L168 Benchmark]: CACSL2BoogieTranslator took 176.37 ms. Allocated memory is still 52.4 MB. Free memory was 34.0 MB in the beginning and 36.9 MB in the end (delta: -2.9 MB). Peak memory consumption was 11.6 MB. Max. memory is 16.1 GB. [2020-12-09 09:39:11,925 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.46 ms. Allocated memory was 52.4 MB in the beginning and 71.3 MB in the end (delta: 18.9 MB). Free memory was 36.9 MB in the beginning and 56.0 MB in the end (delta: -19.2 MB). Peak memory consumption was 4.0 MB. Max. memory is 16.1 GB. [2020-12-09 09:39:11,926 INFO L168 Benchmark]: Boogie Preprocessor took 18.15 ms. Allocated memory is still 71.3 MB. Free memory was 56.0 MB in the beginning and 54.7 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 09:39:11,926 INFO L168 Benchmark]: RCFGBuilder took 384.27 ms. Allocated memory is still 71.3 MB. Free memory was 54.7 MB in the beginning and 43.5 MB in the end (delta: 11.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-09 09:39:11,927 INFO L168 Benchmark]: TraceAbstraction took 686.95 ms. Allocated memory is still 71.3 MB. Free memory was 43.1 MB in the beginning and 40.8 MB in the end (delta: 2.3 MB). Peak memory consumption was 3.6 MB. Max. memory is 16.1 GB. [2020-12-09 09:39:11,927 INFO L168 Benchmark]: Witness Printer took 29.29 ms. Allocated memory is still 71.3 MB. Free memory was 40.8 MB in the beginning and 38.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 09:39:11,930 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 52.4 MB. Free memory was 34.6 MB in the beginning and 34.5 MB in the end (delta: 111.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 176.37 ms. Allocated memory is still 52.4 MB. Free memory was 34.0 MB in the beginning and 36.9 MB in the end (delta: -2.9 MB). Peak memory consumption was 11.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 29.46 ms. Allocated memory was 52.4 MB in the beginning and 71.3 MB in the end (delta: 18.9 MB). Free memory was 36.9 MB in the beginning and 56.0 MB in the end (delta: -19.2 MB). Peak memory consumption was 4.0 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 18.15 ms. Allocated memory is still 71.3 MB. Free memory was 56.0 MB in the beginning and 54.7 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 384.27 ms. Allocated memory is still 71.3 MB. Free memory was 54.7 MB in the beginning and 43.5 MB in the end (delta: 11.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 686.95 ms. Allocated memory is still 71.3 MB. Free memory was 43.1 MB in the beginning and 40.8 MB in the end (delta: 2.3 MB). Peak memory consumption was 3.6 MB. Max. memory is 16.1 GB. * Witness Printer took 29.29 ms. Allocated memory is still 71.3 MB. Free memory was 40.8 MB in the beginning and 38.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 5]: Loop Invariant [2020-12-09 09:39:11,935 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-09 09:39:11,935 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-09 09:39:11,935 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-09 09:39:11,935 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-09 09:39:11,936 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-09 09:39:11,936 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-09 09:39:11,936 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-09 09:39:11,936 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-09 09:39:11,936 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-09 09:39:11,936 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: (~fp.mul~FLOAT(~roundNearestTiesToEven, ~to_fp~LONGDOUBLE(~roundNearestTiesToEven, 13567505/21267647932558653966460912964485513216), ~fp.neg~FLOAT(~to_fp~LONGDOUBLE(~roundNearestTiesToEven, 5186565/4722366482869645213696))) == result && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && target == ~fp.neg~FLOAT(~to_fp~LONGDOUBLE(~roundNearestTiesToEven, 1/713623846352979940529142984724747568191373312)) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.5s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 4 SDtfs, 9 SDslu, 1 SDs, 0 SdLazy, 2 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred 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: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 2 NumberOfFragments, 21 HoareAnnotationTreeSize, 1 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 3 ConstructedInterpolants, 0 QuantifiedInterpolants, 66 SizeOfPredicates, 5 NumberOfNonLiveVariables, 34 ConjunctsInSsa, 6 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 proved your program to be correct! Received shutdown request...