./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_0920a.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_c436ae02-883d-41b9-b97a-74780dfe9784/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_c436ae02-883d-41b9-b97a-74780dfe9784/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_c436ae02-883d-41b9-b97a-74780dfe9784/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_c436ae02-883d-41b9-b97a-74780dfe9784/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0920a.c -s /tmp/vcloud-vcloud-master/worker/run_dir_c436ae02-883d-41b9-b97a-74780dfe9784/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_c436ae02-883d-41b9-b97a-74780dfe9784/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 8aa1a92a1779a20f74a516c833d3b843eed96e54 .............................................................................................................................................................................................................................................................................................................................................................. 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_c436ae02-883d-41b9-b97a-74780dfe9784/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_c436ae02-883d-41b9-b97a-74780dfe9784/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_c436ae02-883d-41b9-b97a-74780dfe9784/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_c436ae02-883d-41b9-b97a-74780dfe9784/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0920a.c -s /tmp/vcloud-vcloud-master/worker/run_dir_c436ae02-883d-41b9-b97a-74780dfe9784/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_c436ae02-883d-41b9-b97a-74780dfe9784/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 8aa1a92a1779a20f74a516c833d3b843eed96e54 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 19:33:50,763 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 19:33:50,765 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 19:33:50,786 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 19:33:50,787 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 19:33:50,788 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 19:33:50,789 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 19:33:50,791 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 19:33:50,793 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 19:33:50,794 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 19:33:50,795 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 19:33:50,796 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 19:33:50,796 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 19:33:50,797 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 19:33:50,798 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 19:33:50,799 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 19:33:50,800 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 19:33:50,800 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 19:33:50,802 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 19:33:50,808 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 19:33:50,810 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 19:33:50,811 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 19:33:50,812 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 19:33:50,812 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 19:33:50,815 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 19:33:50,815 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 19:33:50,815 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 19:33:50,816 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 19:33:50,816 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 19:33:50,817 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 19:33:50,818 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 19:33:50,818 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 19:33:50,819 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 19:33:50,819 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 19:33:50,820 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 19:33:50,820 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 19:33:50,821 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 19:33:50,825 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 19:33:50,825 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 19:33:50,826 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 19:33:50,826 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 19:33:50,827 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_c436ae02-883d-41b9-b97a-74780dfe9784/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 19:33:50,854 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 19:33:50,854 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 19:33:50,854 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 19:33:50,854 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 19:33:50,854 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 19:33:50,855 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 19:33:50,855 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 19:33:50,855 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 19:33:50,855 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 19:33:50,855 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 19:33:50,855 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 19:33:50,855 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 19:33:50,855 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 19:33:50,855 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 19:33:50,856 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 19:33:50,856 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 19:33:50,856 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 19:33:50,856 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 19:33:50,856 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 19:33:50,856 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 19:33:50,857 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 19:33:50,857 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 19:33:50,857 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 19:33:50,857 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 19:33:50,857 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 19:33:50,857 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 19:33:50,857 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 19:33:50,857 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 19:33:50,857 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 19:33:50,858 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 19:33:50,858 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 19:33:50,858 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 19:33:50,858 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 19:33:50,858 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 19:33:50,858 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 19:33:50,858 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 19:33:50,858 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 19:33:50,858 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 19:33:50,858 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 19:33:50,859 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_c436ae02-883d-41b9-b97a-74780dfe9784/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_c436ae02-883d-41b9-b97a-74780dfe9784/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8aa1a92a1779a20f74a516c833d3b843eed96e54 [2020-12-09 19:33:51,016 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 19:33:51,032 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 19:33:51,034 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 19:33:51,035 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 19:33:51,036 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 19:33:51,036 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_c436ae02-883d-41b9-b97a-74780dfe9784/bin/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_0920a.c [2020-12-09 19:33:51,084 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c436ae02-883d-41b9-b97a-74780dfe9784/bin/utaipan/data/0089d2c7c/5e556cf6f7574206a4c7add19bd089f0/FLAG308b11f1e [2020-12-09 19:33:51,473 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 19:33:51,473 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_c436ae02-883d-41b9-b97a-74780dfe9784/sv-benchmarks/c/float-newlib/float_req_bl_0920a.c [2020-12-09 19:33:51,481 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c436ae02-883d-41b9-b97a-74780dfe9784/bin/utaipan/data/0089d2c7c/5e556cf6f7574206a4c7add19bd089f0/FLAG308b11f1e [2020-12-09 19:33:51,490 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_c436ae02-883d-41b9-b97a-74780dfe9784/bin/utaipan/data/0089d2c7c/5e556cf6f7574206a4c7add19bd089f0 [2020-12-09 19:33:51,492 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 19:33:51,493 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 19:33:51,494 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 19:33:51,494 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 19:33:51,497 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 19:33:51,497 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:33:51" (1/1) ... [2020-12-09 19:33:51,498 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e0d3779 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:33:51, skipping insertion in model container [2020-12-09 19:33:51,498 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:33:51" (1/1) ... [2020-12-09 19:33:51,505 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 19:33:51,523 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 19:33:51,654 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_c436ae02-883d-41b9-b97a-74780dfe9784/sv-benchmarks/c/float-newlib/float_req_bl_0920a.c[3541,3554] [2020-12-09 19:33:51,656 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 19:33:51,663 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 19:33:51,689 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_c436ae02-883d-41b9-b97a-74780dfe9784/sv-benchmarks/c/float-newlib/float_req_bl_0920a.c[3541,3554] [2020-12-09 19:33:51,690 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 19:33:51,701 INFO L208 MainTranslator]: Completed translation [2020-12-09 19:33:51,702 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:33:51 WrapperNode [2020-12-09 19:33:51,702 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 19:33:51,703 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 19:33:51,703 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 19:33:51,703 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 19:33:51,709 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:33:51" (1/1) ... [2020-12-09 19:33:51,716 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:33:51" (1/1) ... [2020-12-09 19:33:51,733 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 19:33:51,734 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 19:33:51,734 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 19:33:51,734 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 19:33:51,740 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:33:51" (1/1) ... [2020-12-09 19:33:51,741 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:33:51" (1/1) ... [2020-12-09 19:33:51,743 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:33:51" (1/1) ... [2020-12-09 19:33:51,743 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:33:51" (1/1) ... [2020-12-09 19:33:51,749 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:33:51" (1/1) ... [2020-12-09 19:33:51,753 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:33:51" (1/1) ... [2020-12-09 19:33:51,755 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:33:51" (1/1) ... [2020-12-09 19:33:51,757 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 19:33:51,758 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 19:33:51,758 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 19:33:51,758 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 19:33:51,759 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:33:51" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c436ae02-883d-41b9-b97a-74780dfe9784/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 19:33:51,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 19:33:51,811 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 19:33:51,811 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-12-09 19:33:51,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-09 19:33:51,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-12-09 19:33:51,812 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 19:33:51,812 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 19:33:51,812 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-09 19:33:51,812 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-09 19:33:52,174 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 19:33:52,174 INFO L299 CfgBuilder]: Removed 18 assume(true) statements. [2020-12-09 19:33:52,176 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:33:52 BoogieIcfgContainer [2020-12-09 19:33:52,176 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 19:33:52,177 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 19:33:52,177 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 19:33:52,180 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 19:33:52,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 07:33:51" (1/3) ... [2020-12-09 19:33:52,180 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f41bac1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:33:52, skipping insertion in model container [2020-12-09 19:33:52,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:33:51" (2/3) ... [2020-12-09 19:33:52,181 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f41bac1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:33:52, skipping insertion in model container [2020-12-09 19:33:52,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:33:52" (3/3) ... [2020-12-09 19:33:52,182 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0920a.c [2020-12-09 19:33:52,191 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 19:33:52,194 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 19:33:52,201 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 19:33:52,218 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 19:33:52,218 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 19:33:52,218 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 19:33:52,218 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 19:33:52,219 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 19:33:52,219 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 19:33:52,219 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 19:33:52,219 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 19:33:52,228 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2020-12-09 19:33:52,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-09 19:33:52,232 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:33:52,232 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 19:33:52,232 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 19:33:52,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:33:52,236 INFO L82 PathProgramCache]: Analyzing trace with hash -1747967499, now seen corresponding path program 1 times [2020-12-09 19:33:52,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:33:52,243 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156321574] [2020-12-09 19:33:52,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:33:52,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:33:52,344 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 19:33:52,344 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156321574] [2020-12-09 19:33:52,345 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:33:52,345 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 19:33:52,345 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787093545] [2020-12-09 19:33:52,348 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-09 19:33:52,348 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 19:33:52,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-09 19:33:52,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 19:33:52,359 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 2 states. [2020-12-09 19:33:52,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:33:52,371 INFO L93 Difference]: Finished difference Result 50 states and 77 transitions. [2020-12-09 19:33:52,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-09 19:33:52,372 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2020-12-09 19:33:52,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:33:52,378 INFO L225 Difference]: With dead ends: 50 [2020-12-09 19:33:52,378 INFO L226 Difference]: Without dead ends: 23 [2020-12-09 19:33:52,380 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 [2020-12-09 19:33:52,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-12-09 19:33:52,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-12-09 19:33:52,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-12-09 19:33:52,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2020-12-09 19:33:52,403 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 9 [2020-12-09 19:33:52,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:33:52,403 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2020-12-09 19:33:52,403 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-09 19:33:52,404 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2020-12-09 19:33:52,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 19:33:52,404 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:33:52,404 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 19:33:52,404 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 19:33:52,404 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 19:33:52,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:33:52,405 INFO L82 PathProgramCache]: Analyzing trace with hash -418829128, now seen corresponding path program 1 times [2020-12-09 19:33:52,405 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:33:52,406 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579473552] [2020-12-09 19:33:52,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:33:52,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:33:52,442 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 19:33:52,442 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579473552] [2020-12-09 19:33:52,443 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:33:52,443 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 19:33:52,443 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364950224] [2020-12-09 19:33:52,444 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 19:33:52,444 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 19:33:52,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 19:33:52,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 19:33:52,445 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand 3 states. [2020-12-09 19:33:52,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:33:52,459 INFO L93 Difference]: Finished difference Result 41 states and 48 transitions. [2020-12-09 19:33:52,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 19:33:52,460 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-12-09 19:33:52,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:33:52,460 INFO L225 Difference]: With dead ends: 41 [2020-12-09 19:33:52,461 INFO L226 Difference]: Without dead ends: 23 [2020-12-09 19:33:52,461 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 19:33:52,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-12-09 19:33:52,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-12-09 19:33:52,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-12-09 19:33:52,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2020-12-09 19:33:52,466 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 10 [2020-12-09 19:33:52,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:33:52,466 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2020-12-09 19:33:52,466 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 19:33:52,466 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2020-12-09 19:33:52,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-09 19:33:52,467 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:33:52,467 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 19:33:52,467 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 19:33:52,467 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 19:33:52,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:33:52,468 INFO L82 PathProgramCache]: Analyzing trace with hash 1439776733, now seen corresponding path program 1 times [2020-12-09 19:33:52,468 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:33:52,468 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561384126] [2020-12-09 19:33:52,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:33:52,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 19:33:52,527 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 19:33:52,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 19:33:52,564 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 19:33:52,590 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-12-09 19:33:52,590 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-09 19:33:52,591 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-09 19:33:52,621 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 07:33:52 BoogieIcfgContainer [2020-12-09 19:33:52,621 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 19:33:52,621 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 19:33:52,622 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 19:33:52,622 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 19:33:52,622 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:33:52" (3/4) ... [2020-12-09 19:33:52,624 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-09 19:33:52,624 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 19:33:52,626 INFO L168 Benchmark]: Toolchain (without parser) took 1131.32 ms. Allocated memory is still 115.3 MB. Free memory was 93.5 MB in the beginning and 39.1 MB in the end (delta: 54.4 MB). Peak memory consumption was 55.0 MB. Max. memory is 16.1 GB. [2020-12-09 19:33:52,626 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 69.2 MB. Free memory is still 39.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 19:33:52,626 INFO L168 Benchmark]: CACSL2BoogieTranslator took 207.97 ms. Allocated memory is still 115.3 MB. Free memory was 93.2 MB in the beginning and 81.0 MB in the end (delta: 12.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-09 19:33:52,627 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.87 ms. Allocated memory is still 115.3 MB. Free memory was 81.0 MB in the beginning and 78.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 19:33:52,627 INFO L168 Benchmark]: Boogie Preprocessor took 23.45 ms. Allocated memory is still 115.3 MB. Free memory was 78.9 MB in the beginning and 77.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 19:33:52,628 INFO L168 Benchmark]: RCFGBuilder took 418.00 ms. Allocated memory is still 115.3 MB. Free memory was 77.4 MB in the beginning and 71.1 MB in the end (delta: 6.2 MB). Peak memory consumption was 19.3 MB. Max. memory is 16.1 GB. [2020-12-09 19:33:52,628 INFO L168 Benchmark]: TraceAbstraction took 444.03 ms. Allocated memory is still 115.3 MB. Free memory was 71.1 MB in the beginning and 39.1 MB in the end (delta: 32.0 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.1 GB. [2020-12-09 19:33:52,629 INFO L168 Benchmark]: Witness Printer took 2.71 ms. Allocated memory is still 115.3 MB. Free memory is still 39.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 19:33:52,632 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 69.2 MB. Free memory is still 39.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 207.97 ms. Allocated memory is still 115.3 MB. Free memory was 93.2 MB in the beginning and 81.0 MB in the end (delta: 12.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 30.87 ms. Allocated memory is still 115.3 MB. Free memory was 81.0 MB in the beginning and 78.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 23.45 ms. Allocated memory is still 115.3 MB. Free memory was 78.9 MB in the beginning and 77.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 418.00 ms. Allocated memory is still 115.3 MB. Free memory was 77.4 MB in the beginning and 71.1 MB in the end (delta: 6.2 MB). Peak memory consumption was 19.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 444.03 ms. Allocated memory is still 115.3 MB. Free memory was 71.1 MB in the beginning and 39.1 MB in the end (delta: 32.0 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.1 GB. * Witness Printer took 2.71 ms. Allocated memory is still 115.3 MB. Free memory is still 39.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 142]: 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 113, overapproximation of bitwiseAnd at line 45, overapproximation of someBinaryArithmeticFLOAToperation at line 46. Possible FailurePath: [L26-L30] static const float ln2_hi_log = 6.9313812256e-01, ln2_lo_log = 9.0580006145e-06, two25_log = 3.355443200e+07, Lg1_log = 6.6666668653e-01, Lg2_log = 4.0000000596e-01, Lg3_log = 2.8571429849e-01, Lg4_log = 2.2222198546e-01, Lg5_log = 1.8183572590e-01, Lg6_log = 1.5313838422e-01, Lg7_log = 1.4798198640e-01; [L32] static const float zero_log = 0.0; [L134] float x = __VERIFIER_nondet_float(); [L136] EXPR x < 0 && isfinite_float(x) [L117] __int32_t ix; VAL [Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, zero_log=0] [L119] ieee_float_shape_type gf_u; [L120] gf_u.value = (x) [L121] EXPR gf_u.word [L121] (ix) = gf_u.word [L123] ix &= 0x7fffffff [L124] return (((ix) < 0x7f800000L)); [L136] EXPR x < 0 && isfinite_float(x) VAL [Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, zero_log=0] [L136] COND TRUE (x < 0 && isfinite_float(x)) [L35] float hfsq, f, s, z, R, w, t1, t2, dk; [L36] __int32_t k, ix, i, j; VAL [Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, zero_log=0] [L39] ieee_float_shape_type gf_u; [L40] gf_u.value = (x) [L41] EXPR gf_u.word [L41] (ix) = gf_u.word [L44] k = 0 VAL [Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, zero_log=0] [L45] COND TRUE ((ix & 0x7fffffff) == 0) [L46] return -two25_log / zero_log; VAL [Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, zero_log=0] [L138] float res = __ieee754_logf(x); [L113] return x != x; [L141] COND TRUE !isnan_float(res) [L142] reach_error() VAL [Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, zero_log=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.3s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 58 SDtfs, 0 SDslu, 22 SDs, 0 SdLazy, 4 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 32 NumberOfCodeBlocks, 32 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 154 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, 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 19:33:54,233 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 19:33:54,235 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 19:33:54,265 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 19:33:54,266 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 19:33:54,267 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 19:33:54,269 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 19:33:54,271 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 19:33:54,273 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 19:33:54,274 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 19:33:54,275 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 19:33:54,277 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 19:33:54,277 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 19:33:54,278 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 19:33:54,279 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 19:33:54,281 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 19:33:54,282 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 19:33:54,283 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 19:33:54,285 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 19:33:54,287 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 19:33:54,289 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 19:33:54,290 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 19:33:54,292 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 19:33:54,293 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 19:33:54,296 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 19:33:54,296 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 19:33:54,297 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 19:33:54,298 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 19:33:54,298 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 19:33:54,299 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 19:33:54,300 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 19:33:54,301 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 19:33:54,302 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 19:33:54,303 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 19:33:54,304 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 19:33:54,304 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 19:33:54,305 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 19:33:54,305 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 19:33:54,305 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 19:33:54,306 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 19:33:54,307 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 19:33:54,308 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_c436ae02-883d-41b9-b97a-74780dfe9784/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-12-09 19:33:54,337 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 19:33:54,337 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 19:33:54,338 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 19:33:54,338 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 19:33:54,338 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 19:33:54,338 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 19:33:54,338 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 19:33:54,339 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 19:33:54,339 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 19:33:54,339 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 19:33:54,339 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 19:33:54,340 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 19:33:54,340 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 19:33:54,340 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 19:33:54,340 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 19:33:54,340 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 19:33:54,341 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 19:33:54,341 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-09 19:33:54,341 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-09 19:33:54,341 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 19:33:54,341 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 19:33:54,341 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 19:33:54,341 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 19:33:54,342 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 19:33:54,342 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-09 19:33:54,342 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 19:33:54,342 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 19:33:54,342 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 19:33:54,342 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 19:33:54,342 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 19:33:54,342 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-12-09 19:33:54,343 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2020-12-09 19:33:54,343 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 19:33:54,343 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 19:33:54,343 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 19:33:54,343 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_c436ae02-883d-41b9-b97a-74780dfe9784/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_c436ae02-883d-41b9-b97a-74780dfe9784/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8aa1a92a1779a20f74a516c833d3b843eed96e54 [2020-12-09 19:33:54,587 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 19:33:54,603 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 19:33:54,605 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 19:33:54,607 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 19:33:54,607 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 19:33:54,608 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_c436ae02-883d-41b9-b97a-74780dfe9784/bin/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_0920a.c [2020-12-09 19:33:54,654 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c436ae02-883d-41b9-b97a-74780dfe9784/bin/utaipan/data/dcdf5243c/fd691941e0fc4295b7e7426b5d59b0a5/FLAG789e424fc [2020-12-09 19:33:55,060 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 19:33:55,061 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_c436ae02-883d-41b9-b97a-74780dfe9784/sv-benchmarks/c/float-newlib/float_req_bl_0920a.c [2020-12-09 19:33:55,068 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c436ae02-883d-41b9-b97a-74780dfe9784/bin/utaipan/data/dcdf5243c/fd691941e0fc4295b7e7426b5d59b0a5/FLAG789e424fc [2020-12-09 19:33:55,081 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_c436ae02-883d-41b9-b97a-74780dfe9784/bin/utaipan/data/dcdf5243c/fd691941e0fc4295b7e7426b5d59b0a5 [2020-12-09 19:33:55,083 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 19:33:55,084 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 19:33:55,086 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 19:33:55,086 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 19:33:55,089 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 19:33:55,089 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:33:55" (1/1) ... [2020-12-09 19:33:55,091 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40e52e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:33:55, skipping insertion in model container [2020-12-09 19:33:55,091 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:33:55" (1/1) ... [2020-12-09 19:33:55,097 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 19:33:55,114 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 19:33:55,255 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_c436ae02-883d-41b9-b97a-74780dfe9784/sv-benchmarks/c/float-newlib/float_req_bl_0920a.c[3541,3554] [2020-12-09 19:33:55,263 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 19:33:55,273 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 19:33:55,302 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_c436ae02-883d-41b9-b97a-74780dfe9784/sv-benchmarks/c/float-newlib/float_req_bl_0920a.c[3541,3554] [2020-12-09 19:33:55,303 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 19:33:55,317 INFO L208 MainTranslator]: Completed translation [2020-12-09 19:33:55,317 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:33:55 WrapperNode [2020-12-09 19:33:55,317 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 19:33:55,318 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 19:33:55,318 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 19:33:55,318 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 19:33:55,324 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:33:55" (1/1) ... [2020-12-09 19:33:55,333 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:33:55" (1/1) ... [2020-12-09 19:33:55,353 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 19:33:55,353 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 19:33:55,353 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 19:33:55,353 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 19:33:55,360 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:33:55" (1/1) ... [2020-12-09 19:33:55,360 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:33:55" (1/1) ... [2020-12-09 19:33:55,364 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:33:55" (1/1) ... [2020-12-09 19:33:55,364 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:33:55" (1/1) ... [2020-12-09 19:33:55,373 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:33:55" (1/1) ... [2020-12-09 19:33:55,377 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:33:55" (1/1) ... [2020-12-09 19:33:55,379 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:33:55" (1/1) ... [2020-12-09 19:33:55,382 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 19:33:55,383 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 19:33:55,383 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 19:33:55,383 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 19:33:55,384 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:33:55" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c436ae02-883d-41b9-b97a-74780dfe9784/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 19:33:55,445 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-12-09 19:33:55,445 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 19:33:55,445 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2020-12-09 19:33:55,445 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-12-09 19:33:55,445 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 19:33:55,446 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 19:33:55,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2020-12-09 19:33:55,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-12-09 19:33:55,446 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-09 19:34:15,644 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 19:34:15,645 INFO L299 CfgBuilder]: Removed 18 assume(true) statements. [2020-12-09 19:34:15,646 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:34:15 BoogieIcfgContainer [2020-12-09 19:34:15,646 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 19:34:15,647 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 19:34:15,647 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 19:34:15,650 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 19:34:15,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 07:33:55" (1/3) ... [2020-12-09 19:34:15,650 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16816a03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:34:15, skipping insertion in model container [2020-12-09 19:34:15,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:33:55" (2/3) ... [2020-12-09 19:34:15,651 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16816a03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:34:15, skipping insertion in model container [2020-12-09 19:34:15,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:34:15" (3/3) ... [2020-12-09 19:34:15,652 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0920a.c [2020-12-09 19:34:15,661 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 19:34:15,664 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 19:34:15,671 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 19:34:15,687 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 19:34:15,687 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 19:34:15,688 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 19:34:15,688 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 19:34:15,688 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 19:34:15,688 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 19:34:15,688 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 19:34:15,688 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 19:34:15,696 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-12-09 19:34:15,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-09 19:34:15,699 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:34:15,700 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 19:34:15,700 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 19:34:15,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:34:15,704 INFO L82 PathProgramCache]: Analyzing trace with hash 627170052, now seen corresponding path program 1 times [2020-12-09 19:34:15,712 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 19:34:15,712 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [103875900] [2020-12-09 19:34:15,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c436ae02-883d-41b9-b97a-74780dfe9784/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 19:34:16,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:34:16,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 1 conjunts are in the unsatisfiable core [2020-12-09 19:34:16,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 19:34:16,172 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 19:34:16,172 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 19:34:16,172 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [103875900] [2020-12-09 19:34:16,173 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:34:16,173 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 19:34:16,173 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630518957] [2020-12-09 19:34:16,176 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-09 19:34:16,176 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 19:34:16,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-09 19:34:16,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 19:34:16,186 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 2 states. [2020-12-09 19:34:16,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:34:16,198 INFO L93 Difference]: Finished difference Result 71 states and 112 transitions. [2020-12-09 19:34:16,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-09 19:34:16,199 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-12-09 19:34:16,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:34:16,205 INFO L225 Difference]: With dead ends: 71 [2020-12-09 19:34:16,205 INFO L226 Difference]: Without dead ends: 33 [2020-12-09 19:34:16,207 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 19:34:16,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-12-09 19:34:16,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-12-09 19:34:16,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-12-09 19:34:16,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 44 transitions. [2020-12-09 19:34:16,229 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 44 transitions. Word has length 11 [2020-12-09 19:34:16,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:34:16,229 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 44 transitions. [2020-12-09 19:34:16,229 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-09 19:34:16,229 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 44 transitions. [2020-12-09 19:34:16,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-09 19:34:16,230 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:34:16,230 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 19:34:16,431 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-09 19:34:16,432 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 19:34:16,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:34:16,435 INFO L82 PathProgramCache]: Analyzing trace with hash -1650641455, now seen corresponding path program 1 times [2020-12-09 19:34:16,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 19:34:16,438 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1609180127] [2020-12-09 19:34:16,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c436ae02-883d-41b9-b97a-74780dfe9784/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 [2020-12-09 19:34:16,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:34:16,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 19:34:16,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 19:34:16,914 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 19:34:16,914 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 19:34:16,914 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1609180127] [2020-12-09 19:34:16,914 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:34:16,915 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 19:34:16,915 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397085459] [2020-12-09 19:34:16,916 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 19:34:16,916 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 19:34:16,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 19:34:16,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 19:34:16,917 INFO L87 Difference]: Start difference. First operand 33 states and 44 transitions. Second operand 3 states. [2020-12-09 19:34:16,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:34:16,954 INFO L93 Difference]: Finished difference Result 59 states and 80 transitions. [2020-12-09 19:34:16,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 19:34:16,955 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-12-09 19:34:16,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:34:16,956 INFO L225 Difference]: With dead ends: 59 [2020-12-09 19:34:16,956 INFO L226 Difference]: Without dead ends: 33 [2020-12-09 19:34:16,957 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 19:34:16,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-12-09 19:34:16,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-12-09 19:34:16,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-12-09 19:34:16,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 43 transitions. [2020-12-09 19:34:16,962 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 43 transitions. Word has length 12 [2020-12-09 19:34:16,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:34:16,962 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 43 transitions. [2020-12-09 19:34:16,962 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 19:34:16,962 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 43 transitions. [2020-12-09 19:34:16,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-09 19:34:16,963 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:34:16,963 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 19:34:17,164 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-09 19:34:17,165 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 19:34:17,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:34:17,168 INFO L82 PathProgramCache]: Analyzing trace with hash 1227406364, now seen corresponding path program 1 times [2020-12-09 19:34:17,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 19:34:17,171 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1562634705] [2020-12-09 19:34:17,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c436ae02-883d-41b9-b97a-74780dfe9784/bin/utaipan/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-12-09 19:34:17,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:34:17,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-09 19:34:17,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 19:34:17,792 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-12-09 19:34:17,990 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 19:34:17,990 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 19:34:17,990 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1562634705] [2020-12-09 19:34:17,991 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:34:17,991 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-09 19:34:17,991 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061904108] [2020-12-09 19:34:17,991 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 19:34:17,991 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 19:34:17,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 19:34:17,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-09 19:34:17,993 INFO L87 Difference]: Start difference. First operand 33 states and 43 transitions. Second operand 6 states. [2020-12-09 19:34:18,184 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 8 [2020-12-09 19:34:20,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:34:20,484 INFO L93 Difference]: Finished difference Result 38 states and 47 transitions. [2020-12-09 19:34:20,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 19:34:20,516 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-12-09 19:34:20,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:34:20,516 INFO L225 Difference]: With dead ends: 38 [2020-12-09 19:34:20,516 INFO L226 Difference]: Without dead ends: 18 [2020-12-09 19:34:20,517 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-12-09 19:34:20,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-12-09 19:34:20,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-12-09 19:34:20,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-12-09 19:34:20,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 17 transitions. [2020-12-09 19:34:20,520 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 17 transitions. Word has length 16 [2020-12-09 19:34:20,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:34:20,520 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 17 transitions. [2020-12-09 19:34:20,520 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 19:34:20,520 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 17 transitions. [2020-12-09 19:34:20,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-09 19:34:20,521 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:34:20,521 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 19:34:20,721 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-12-09 19:34:20,723 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 19:34:20,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:34:20,725 INFO L82 PathProgramCache]: Analyzing trace with hash -618100041, now seen corresponding path program 1 times [2020-12-09 19:34:20,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 19:34:20,728 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [697517241] [2020-12-09 19:34:20,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c436ae02-883d-41b9-b97a-74780dfe9784/bin/utaipan/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-12-09 19:34:21,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:34:21,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-09 19:34:21,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 19:34:21,767 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 19:34:21,767 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 19:34:21,767 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [697517241] [2020-12-09 19:34:21,768 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:34:21,768 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 19:34:21,768 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367649486] [2020-12-09 19:34:21,768 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 19:34:21,768 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 19:34:21,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 19:34:21,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-09 19:34:21,769 INFO L87 Difference]: Start difference. First operand 18 states and 17 transitions. Second operand 6 states. [2020-12-09 19:34:22,420 WARN L197 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2020-12-09 19:34:22,907 WARN L197 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2020-12-09 19:34:23,267 WARN L197 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-12-09 19:34:23,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:34:23,268 INFO L93 Difference]: Finished difference Result 18 states and 17 transitions. [2020-12-09 19:34:23,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 19:34:23,268 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-12-09 19:34:23,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:34:23,269 INFO L225 Difference]: With dead ends: 18 [2020-12-09 19:34:23,269 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 19:34:23,269 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-09 19:34:23,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 19:34:23,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 19:34:23,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 19:34:23,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 19:34:23,270 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-12-09 19:34:23,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:34:23,271 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 19:34:23,271 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 19:34:23,271 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 19:34:23,271 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 19:34:23,472 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-12-09 19:34:23,477 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-09 19:34:23,757 WARN L197 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2020-12-09 19:34:23,988 WARN L197 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2020-12-09 19:34:24,116 INFO L262 CegarLoopResult]: For program point L118-1(lines 118 122) no Hoare annotation was computed. [2020-12-09 19:34:24,116 INFO L258 CegarLoopResult]: At program point L118-2(lines 118 122) the Hoare annotation is: (and (= currentRoundingMode roundNearestTiesToEven) (exists ((v_prenex_1 RoundingMode)) (fp.lt ULTIMATE.start_main_~x~0 ((_ to_fp 8 24) v_prenex_1 (_ bv0 32)))) (= ((_ to_fp 8 24) currentRoundingMode (_ +zero 11 53)) ~zero_log~0) |ULTIMATE.start_main_#t~short14|) [2020-12-09 19:34:24,116 INFO L262 CegarLoopResult]: For program point L118-3(lines 118 122) no Hoare annotation was computed. [2020-12-09 19:34:24,116 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-09 19:34:24,116 INFO L262 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-09 19:34:24,117 INFO L262 CegarLoopResult]: For program point L45(lines 45 46) no Hoare annotation was computed. [2020-12-09 19:34:24,117 INFO L262 CegarLoopResult]: For program point L136(line 136) no Hoare annotation was computed. [2020-12-09 19:34:24,117 INFO L262 CegarLoopResult]: For program point L136-2(lines 136 145) no Hoare annotation was computed. [2020-12-09 19:34:24,117 INFO L262 CegarLoopResult]: For program point L70(lines 70 86) no Hoare annotation was computed. [2020-12-09 19:34:24,117 INFO L262 CegarLoopResult]: For program point L136-4(lines 136 145) no Hoare annotation was computed. [2020-12-09 19:34:24,117 INFO L262 CegarLoopResult]: For program point L54-1(lines 54 58) no Hoare annotation was computed. [2020-12-09 19:34:24,117 INFO L258 CegarLoopResult]: At program point L54-2(lines 54 58) the Hoare annotation is: false [2020-12-09 19:34:24,117 INFO L262 CegarLoopResult]: For program point L71(lines 71 78) no Hoare annotation was computed. [2020-12-09 19:34:24,117 INFO L262 CegarLoopResult]: For program point L38-1(lines 38 42) no Hoare annotation was computed. [2020-12-09 19:34:24,118 INFO L258 CegarLoopResult]: At program point L38-2(lines 38 42) the Hoare annotation is: (and (= currentRoundingMode roundNearestTiesToEven) (exists ((v_prenex_1 RoundingMode)) (fp.lt ULTIMATE.start___ieee754_logf_~x ((_ to_fp 8 24) v_prenex_1 (_ bv0 32)))) (exists ((v_prenex_1 RoundingMode)) (fp.lt ULTIMATE.start_main_~x~0 ((_ to_fp 8 24) v_prenex_1 (_ bv0 32)))) (= ((_ to_fp 8 24) currentRoundingMode (_ +zero 11 53)) ~zero_log~0)) [2020-12-09 19:34:24,118 INFO L262 CegarLoopResult]: For program point L38-3(lines 38 42) no Hoare annotation was computed. [2020-12-09 19:34:24,118 INFO L262 CegarLoopResult]: For program point L63-1(lines 63 67) no Hoare annotation was computed. [2020-12-09 19:34:24,118 INFO L258 CegarLoopResult]: At program point L63-2(lines 63 67) the Hoare annotation is: false [2020-12-09 19:34:24,118 INFO L262 CegarLoopResult]: For program point L63-3(lines 63 67) no Hoare annotation was computed. [2020-12-09 19:34:24,118 INFO L258 CegarLoopResult]: At program point L113(line 113) the Hoare annotation is: (and (= currentRoundingMode roundNearestTiesToEven) (exists ((ULTIMATE.start___ieee754_logf_~x (_ FloatingPoint 8 24))) (= (fp.div roundNearestTiesToEven (fp.sub roundNearestTiesToEven ULTIMATE.start___ieee754_logf_~x ULTIMATE.start___ieee754_logf_~x) ((_ to_fp 8 24) roundNearestTiesToEven (_ +zero 11 53))) |ULTIMATE.start___ieee754_logf_#res|)) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (= ((_ to_fp 8 24) currentRoundingMode (_ +zero 11 53)) ~zero_log~0)) [2020-12-09 19:34:24,118 INFO L262 CegarLoopResult]: For program point L80(lines 80 85) no Hoare annotation was computed. [2020-12-09 19:34:24,118 INFO L262 CegarLoopResult]: For program point L47(lines 47 48) no Hoare annotation was computed. [2020-12-09 19:34:24,119 INFO L262 CegarLoopResult]: For program point L105(lines 105 108) no Hoare annotation was computed. [2020-12-09 19:34:24,119 INFO L262 CegarLoopResult]: For program point L72(lines 72 77) no Hoare annotation was computed. [2020-12-09 19:34:24,119 INFO L262 CegarLoopResult]: For program point L97(lines 97 109) no Hoare annotation was computed. [2020-12-09 19:34:24,119 INFO L265 CegarLoopResult]: At program point L147(lines 127 148) the Hoare annotation is: true [2020-12-09 19:34:24,119 INFO L262 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-09 19:34:24,119 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 142) no Hoare annotation was computed. [2020-12-09 19:34:24,120 INFO L262 CegarLoopResult]: For program point L49(lines 49 50) no Hoare annotation was computed. [2020-12-09 19:34:24,120 INFO L262 CegarLoopResult]: For program point L99(lines 99 103) no Hoare annotation was computed. [2020-12-09 19:34:24,120 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-09 19:34:24,120 INFO L258 CegarLoopResult]: At program point L124(lines 116 125) the Hoare annotation is: (and (= currentRoundingMode roundNearestTiesToEven) (exists ((v_prenex_1 RoundingMode)) (fp.lt ULTIMATE.start_main_~x~0 ((_ to_fp 8 24) v_prenex_1 (_ bv0 32)))) (= ((_ to_fp 8 24) currentRoundingMode (_ +zero 11 53)) ~zero_log~0) |ULTIMATE.start_main_#t~short14|) [2020-12-09 19:34:24,120 INFO L262 CegarLoopResult]: For program point L141(lines 141 144) no Hoare annotation was computed. [2020-12-09 19:34:24,120 INFO L258 CegarLoopResult]: At program point L108(lines 34 110) the Hoare annotation is: (and (= currentRoundingMode roundNearestTiesToEven) (exists ((ULTIMATE.start___ieee754_logf_~x (_ FloatingPoint 8 24))) (= (fp.div roundNearestTiesToEven (fp.sub roundNearestTiesToEven ULTIMATE.start___ieee754_logf_~x ULTIMATE.start___ieee754_logf_~x) ((_ to_fp 8 24) roundNearestTiesToEven (_ +zero 11 53))) |ULTIMATE.start___ieee754_logf_#res|)) (= ((_ to_fp 8 24) currentRoundingMode (_ +zero 11 53)) ~zero_log~0)) [2020-12-09 19:34:24,121 INFO L262 CegarLoopResult]: For program point L51(lines 51 59) no Hoare annotation was computed. [2020-12-09 19:34:24,121 INFO L262 CegarLoopResult]: For program point L51-1(lines 51 59) no Hoare annotation was computed. [2020-12-09 19:34:24,121 INFO L262 CegarLoopResult]: For program point L142(line 142) no Hoare annotation was computed. [2020-12-09 19:34:24,129 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-09 19:34:24,130 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-09 19:34:24,130 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-09 19:34:24,130 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_logf_~x,QUANTIFIED] [2020-12-09 19:34:24,130 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_logf_~x,QUANTIFIED] [2020-12-09 19:34:24,131 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-09 19:34:24,134 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-09 19:34:24,135 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-09 19:34:24,135 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-09 19:34:24,135 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_logf_~x,QUANTIFIED] [2020-12-09 19:34:24,135 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_logf_~x,QUANTIFIED] [2020-12-09 19:34:24,135 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-09 19:34:24,137 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-09 19:34:24,137 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_1,QUANTIFIED] [2020-12-09 19:34:24,137 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-09 19:34:24,138 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_1,QUANTIFIED] [2020-12-09 19:34:24,138 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-09 19:34:24,138 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-09 19:34:24,139 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-09 19:34:24,139 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_logf_~x,QUANTIFIED] [2020-12-09 19:34:24,139 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_logf_~x,QUANTIFIED] [2020-12-09 19:34:24,139 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-09 19:34:24,140 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-09 19:34:24,140 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-09 19:34:24,140 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-09 19:34:24,140 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_logf_~x,QUANTIFIED] [2020-12-09 19:34:24,141 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_logf_~x,QUANTIFIED] [2020-12-09 19:34:24,141 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-09 19:34:24,141 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-09 19:34:24,142 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_1,QUANTIFIED] [2020-12-09 19:34:24,142 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-09 19:34:24,142 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_1,QUANTIFIED] [2020-12-09 19:34:24,143 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-09 19:34:24,143 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_1,QUANTIFIED] [2020-12-09 19:34:24,144 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_1,QUANTIFIED] [2020-12-09 19:34:24,144 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-09 19:34:24,144 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_1,QUANTIFIED] [2020-12-09 19:34:24,144 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_1,QUANTIFIED] [2020-12-09 19:34:24,146 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 07:34:24 BoogieIcfgContainer [2020-12-09 19:34:24,146 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 19:34:24,147 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 19:34:24,147 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 19:34:24,147 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 19:34:24,147 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:34:15" (3/4) ... [2020-12-09 19:34:24,150 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 19:34:24,158 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2020-12-09 19:34:24,159 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-12-09 19:34:24,159 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 19:34:24,159 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 19:34:24,177 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven && (\exists v_prenex_1 : FloatRoundingMode :: ~fp.lt~FLOAT(x, ~to_fp~LONGDOUBLE(v_prenex_1, 0bv32)))) && ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~Pluszero~LONGDOUBLE()) == zero_log) && aux-x < 0 && isfinite_float(x)-aux [2020-12-09 19:34:24,177 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven && (\exists v_prenex_1 : FloatRoundingMode :: ~fp.lt~FLOAT(x, ~to_fp~LONGDOUBLE(v_prenex_1, 0bv32)))) && ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~Pluszero~LONGDOUBLE()) == zero_log) && aux-x < 0 && isfinite_float(x)-aux [2020-12-09 19:34:24,178 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven && (\exists v_prenex_1 : FloatRoundingMode :: ~fp.lt~FLOAT(x, ~to_fp~LONGDOUBLE(v_prenex_1, 0bv32)))) && (\exists v_prenex_1 : FloatRoundingMode :: ~fp.lt~FLOAT(x, ~to_fp~LONGDOUBLE(v_prenex_1, 0bv32)))) && ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~Pluszero~LONGDOUBLE()) == zero_log [2020-12-09 19:34:24,178 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven && (\exists ULTIMATE.start___ieee754_logf_~x : C_FLOAT :: ~fp.div~FLOAT(~roundNearestTiesToEven, ~fp.sub~FLOAT(~roundNearestTiesToEven, ULTIMATE.start___ieee754_logf_~x, ULTIMATE.start___ieee754_logf_~x), ~to_fp~LONGDOUBLE(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE())) == \result)) && ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~Pluszero~LONGDOUBLE()) == zero_log [2020-12-09 19:34:24,178 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven && (\exists ULTIMATE.start___ieee754_logf_~x : C_FLOAT :: ~fp.div~FLOAT(~roundNearestTiesToEven, ~fp.sub~FLOAT(~roundNearestTiesToEven, ULTIMATE.start___ieee754_logf_~x, ULTIMATE.start___ieee754_logf_~x), ~to_fp~LONGDOUBLE(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE())) == \result)) && 1bv32 == \result) && ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~Pluszero~LONGDOUBLE()) == zero_log [2020-12-09 19:34:24,215 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_c436ae02-883d-41b9-b97a-74780dfe9784/bin/utaipan/witness.graphml [2020-12-09 19:34:24,215 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 19:34:24,216 INFO L168 Benchmark]: Toolchain (without parser) took 29131.11 ms. Allocated memory was 58.7 MB in the beginning and 75.5 MB in the end (delta: 16.8 MB). Free memory was 40.0 MB in the beginning and 56.4 MB in the end (delta: -16.4 MB). Peak memory consumption was 27.5 MB. Max. memory is 16.1 GB. [2020-12-09 19:34:24,216 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 58.7 MB. Free memory is still 41.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 19:34:24,217 INFO L168 Benchmark]: CACSL2BoogieTranslator took 232.04 ms. Allocated memory is still 58.7 MB. Free memory was 39.7 MB in the beginning and 39.3 MB in the end (delta: 435.0 kB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-09 19:34:24,217 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.61 ms. Allocated memory is still 58.7 MB. Free memory was 39.3 MB in the beginning and 37.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 19:34:24,217 INFO L168 Benchmark]: Boogie Preprocessor took 29.46 ms. Allocated memory is still 58.7 MB. Free memory was 37.2 MB in the beginning and 35.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 19:34:24,218 INFO L168 Benchmark]: RCFGBuilder took 20262.92 ms. Allocated memory was 58.7 MB in the beginning and 75.5 MB in the end (delta: 16.8 MB). Free memory was 35.1 MB in the beginning and 42.2 MB in the end (delta: -7.1 MB). Peak memory consumption was 12.4 MB. Max. memory is 16.1 GB. [2020-12-09 19:34:24,218 INFO L168 Benchmark]: TraceAbstraction took 8499.00 ms. Allocated memory is still 75.5 MB. Free memory was 41.8 MB in the beginning and 34.3 MB in the end (delta: 7.5 MB). Peak memory consumption was 5.9 MB. Max. memory is 16.1 GB. [2020-12-09 19:34:24,218 INFO L168 Benchmark]: Witness Printer took 68.28 ms. Allocated memory is still 75.5 MB. Free memory was 34.3 MB in the beginning and 56.4 MB in the end (delta: -22.1 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-12-09 19:34:24,220 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 58.7 MB. Free memory is still 41.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 232.04 ms. Allocated memory is still 58.7 MB. Free memory was 39.7 MB in the beginning and 39.3 MB in the end (delta: 435.0 kB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 34.61 ms. Allocated memory is still 58.7 MB. Free memory was 39.3 MB in the beginning and 37.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 29.46 ms. Allocated memory is still 58.7 MB. Free memory was 37.2 MB in the beginning and 35.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 20262.92 ms. Allocated memory was 58.7 MB in the beginning and 75.5 MB in the end (delta: 16.8 MB). Free memory was 35.1 MB in the beginning and 42.2 MB in the end (delta: -7.1 MB). Peak memory consumption was 12.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 8499.00 ms. Allocated memory is still 75.5 MB. Free memory was 41.8 MB in the beginning and 34.3 MB in the end (delta: 7.5 MB). Peak memory consumption was 5.9 MB. Max. memory is 16.1 GB. * Witness Printer took 68.28 ms. Allocated memory is still 75.5 MB. Free memory was 34.3 MB in the beginning and 56.4 MB in the end (delta: -22.1 MB). Peak memory consumption was 6.3 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 Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_logf_~x,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_logf_~x,QUANTIFIED] - 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 Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_logf_~x,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_logf_~x,QUANTIFIED] - 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 Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_1,QUANTIFIED] - 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 Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_logf_~x,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_logf_~x,QUANTIFIED] - 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 Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_logf_~x,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_logf_~x,QUANTIFIED] - 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 Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_1,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 142]: 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: 113]: Loop Invariant [2020-12-09 19:34:24,225 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-09 19:34:24,225 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-09 19:34:24,225 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-09 19:34:24,225 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_logf_~x,QUANTIFIED] [2020-12-09 19:34:24,225 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_logf_~x,QUANTIFIED] [2020-12-09 19:34:24,226 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-09 19:34:24,226 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-09 19:34:24,226 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-09 19:34:24,226 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-09 19:34:24,227 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_logf_~x,QUANTIFIED] [2020-12-09 19:34:24,227 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_logf_~x,QUANTIFIED] [2020-12-09 19:34:24,227 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: ((unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven && (\exists ULTIMATE.start___ieee754_logf_~x : C_FLOAT :: ~fp.div~FLOAT(~roundNearestTiesToEven, ~fp.sub~FLOAT(~roundNearestTiesToEven, ULTIMATE.start___ieee754_logf_~x, ULTIMATE.start___ieee754_logf_~x), ~to_fp~LONGDOUBLE(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE())) == \result)) && 1bv32 == \result) && ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~Pluszero~LONGDOUBLE()) == zero_log - InvariantResult [Line: 116]: Loop Invariant [2020-12-09 19:34:24,227 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-09 19:34:24,228 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_1,QUANTIFIED] [2020-12-09 19:34:24,228 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-09 19:34:24,228 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_1,QUANTIFIED] Derived loop invariant: ((unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven && (\exists v_prenex_1 : FloatRoundingMode :: ~fp.lt~FLOAT(x, ~to_fp~LONGDOUBLE(v_prenex_1, 0bv32)))) && ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~Pluszero~LONGDOUBLE()) == zero_log) && aux-x < 0 && isfinite_float(x)-aux - InvariantResult [Line: 34]: Loop Invariant [2020-12-09 19:34:24,229 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-09 19:34:24,229 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-09 19:34:24,229 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-09 19:34:24,229 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_logf_~x,QUANTIFIED] [2020-12-09 19:34:24,229 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_logf_~x,QUANTIFIED] [2020-12-09 19:34:24,229 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-09 19:34:24,230 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-09 19:34:24,230 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-09 19:34:24,230 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-09 19:34:24,230 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_logf_~x,QUANTIFIED] [2020-12-09 19:34:24,231 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start___ieee754_logf_~x,QUANTIFIED] [2020-12-09 19:34:24,231 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: (unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven && (\exists ULTIMATE.start___ieee754_logf_~x : C_FLOAT :: ~fp.div~FLOAT(~roundNearestTiesToEven, ~fp.sub~FLOAT(~roundNearestTiesToEven, ULTIMATE.start___ieee754_logf_~x, ULTIMATE.start___ieee754_logf_~x), ~to_fp~LONGDOUBLE(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE())) == \result)) && ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~Pluszero~LONGDOUBLE()) == zero_log - InvariantResult [Line: 63]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 127]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 118]: Loop Invariant [2020-12-09 19:34:24,231 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-09 19:34:24,231 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_1,QUANTIFIED] [2020-12-09 19:34:24,232 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-09 19:34:24,232 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_1,QUANTIFIED] Derived loop invariant: ((unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven && (\exists v_prenex_1 : FloatRoundingMode :: ~fp.lt~FLOAT(x, ~to_fp~LONGDOUBLE(v_prenex_1, 0bv32)))) && ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~Pluszero~LONGDOUBLE()) == zero_log) && aux-x < 0 && isfinite_float(x)-aux - InvariantResult [Line: 38]: Loop Invariant [2020-12-09 19:34:24,232 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-09 19:34:24,233 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_1,QUANTIFIED] [2020-12-09 19:34:24,233 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_1,QUANTIFIED] [2020-12-09 19:34:24,233 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-09 19:34:24,233 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_1,QUANTIFIED] [2020-12-09 19:34:24,233 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_1,QUANTIFIED] Derived loop invariant: ((unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven && (\exists v_prenex_1 : FloatRoundingMode :: ~fp.lt~FLOAT(x, ~to_fp~LONGDOUBLE(v_prenex_1, 0bv32)))) && (\exists v_prenex_1 : FloatRoundingMode :: ~fp.lt~FLOAT(x, ~to_fp~LONGDOUBLE(v_prenex_1, 0bv32)))) && ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~Pluszero~LONGDOUBLE()) == zero_log - InvariantResult [Line: 54]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 37 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 7.7s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 4.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 116 SDtfs, 20 SDslu, 103 SDs, 0 SdLazy, 27 SolverSat, 1 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 2.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 58 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred 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, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 8 PreInvPairs, 14 NumberOfFragments, 101 HoareAnnotationTreeSize, 8 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 1.6s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 56 NumberOfCodeBlocks, 56 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 52 ConstructedInterpolants, 11 QuantifiedInterpolants, 3704 SizeOfPredicates, 15 NumberOfNonLiveVariables, 255 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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...