./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/sqrt_poly.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3eb733a-2389-4f8f-8ee4-1ce2da12e72a/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3eb733a-2389-4f8f-8ee4-1ce2da12e72a/bin/utaipan-SDwSMHVbGG/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3eb733a-2389-4f8f-8ee4-1ce2da12e72a/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3eb733a-2389-4f8f-8ee4-1ce2da12e72a/bin/utaipan-SDwSMHVbGG/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/sqrt_poly.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3eb733a-2389-4f8f-8ee4-1ce2da12e72a/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3eb733a-2389-4f8f-8ee4-1ce2da12e72a/bin/utaipan-SDwSMHVbGG --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 9ff417092ff6ab1dae16b3d719851bc30771c0c1117076f87d0e779624eadca8 ..................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3eb733a-2389-4f8f-8ee4-1ce2da12e72a/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3eb733a-2389-4f8f-8ee4-1ce2da12e72a/bin/utaipan-SDwSMHVbGG/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3eb733a-2389-4f8f-8ee4-1ce2da12e72a/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3eb733a-2389-4f8f-8ee4-1ce2da12e72a/bin/utaipan-SDwSMHVbGG/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/sqrt_poly.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3eb733a-2389-4f8f-8ee4-1ce2da12e72a/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3eb733a-2389-4f8f-8ee4-1ce2da12e72a/bin/utaipan-SDwSMHVbGG --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 9ff417092ff6ab1dae16b3d719851bc30771c0c1117076f87d0e779624eadca8 ......................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-29 05:08:51,885 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 05:08:51,887 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 05:08:51,927 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 05:08:51,928 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 05:08:51,929 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 05:08:51,932 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 05:08:51,935 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 05:08:51,938 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 05:08:51,939 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 05:08:51,941 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 05:08:51,943 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 05:08:51,944 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 05:08:51,945 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 05:08:51,947 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 05:08:51,950 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 05:08:51,951 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 05:08:51,953 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 05:08:51,956 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 05:08:51,959 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 05:08:51,962 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 05:08:51,964 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 05:08:51,966 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 05:08:51,967 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 05:08:51,972 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 05:08:51,972 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 05:08:51,973 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 05:08:51,974 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 05:08:51,975 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 05:08:51,977 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 05:08:51,977 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 05:08:51,978 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 05:08:51,979 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 05:08:51,981 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 05:08:51,982 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 05:08:51,983 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 05:08:51,984 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 05:08:51,984 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 05:08:51,985 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 05:08:51,986 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 05:08:51,987 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 05:08:51,988 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3eb733a-2389-4f8f-8ee4-1ce2da12e72a/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-29 05:08:52,017 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 05:08:52,018 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 05:08:52,019 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 05:08:52,019 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 05:08:52,019 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 05:08:52,019 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 05:08:52,020 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-29 05:08:52,020 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 05:08:52,020 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 05:08:52,020 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-29 05:08:52,021 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-29 05:08:52,021 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 05:08:52,021 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-29 05:08:52,021 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-29 05:08:52,022 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-29 05:08:52,023 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 05:08:52,023 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 05:08:52,023 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 05:08:52,023 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 05:08:52,024 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 05:08:52,024 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 05:08:52,024 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 05:08:52,024 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 05:08:52,025 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 05:08:52,025 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 05:08:52,025 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 05:08:52,025 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 05:08:52,025 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 05:08:52,026 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 05:08:52,026 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 05:08:52,026 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:08:52,027 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 05:08:52,027 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 05:08:52,027 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 05:08:52,027 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-29 05:08:52,028 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-29 05:08:52,028 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 05:08:52,028 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 05:08:52,028 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 05:08:52,029 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_worker_vcloud-master_on_vcloud-master/run_dir_a3eb733a-2389-4f8f-8ee4-1ce2da12e72a/bin/utaipan-SDwSMHVbGG/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3eb733a-2389-4f8f-8ee4-1ce2da12e72a/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9ff417092ff6ab1dae16b3d719851bc30771c0c1117076f87d0e779624eadca8 [2021-10-29 05:08:52,350 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 05:08:52,380 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 05:08:52,385 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 05:08:52,387 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 05:08:52,388 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 05:08:52,389 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3eb733a-2389-4f8f-8ee4-1ce2da12e72a/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/float-benchs/sqrt_poly.c [2021-10-29 05:08:52,467 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3eb733a-2389-4f8f-8ee4-1ce2da12e72a/bin/utaipan-SDwSMHVbGG/data/401c4b20a/460fd4b91a0e4ad19a04e9ce0be7379d/FLAG548e71108 [2021-10-29 05:08:53,025 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 05:08:53,026 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3eb733a-2389-4f8f-8ee4-1ce2da12e72a/sv-benchmarks/c/float-benchs/sqrt_poly.c [2021-10-29 05:08:53,040 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3eb733a-2389-4f8f-8ee4-1ce2da12e72a/bin/utaipan-SDwSMHVbGG/data/401c4b20a/460fd4b91a0e4ad19a04e9ce0be7379d/FLAG548e71108 [2021-10-29 05:08:53,372 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3eb733a-2389-4f8f-8ee4-1ce2da12e72a/bin/utaipan-SDwSMHVbGG/data/401c4b20a/460fd4b91a0e4ad19a04e9ce0be7379d [2021-10-29 05:08:53,376 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 05:08:53,378 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 05:08:53,385 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 05:08:53,386 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 05:08:53,390 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 05:08:53,391 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:08:53" (1/1) ... [2021-10-29 05:08:53,392 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ee34c8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:08:53, skipping insertion in model container [2021-10-29 05:08:53,392 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:08:53" (1/1) ... [2021-10-29 05:08:53,405 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 05:08:53,428 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 05:08:53,632 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3eb733a-2389-4f8f-8ee4-1ce2da12e72a/sv-benchmarks/c/float-benchs/sqrt_poly.c[671,684] [2021-10-29 05:08:53,649 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:08:53,659 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 05:08:53,673 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3eb733a-2389-4f8f-8ee4-1ce2da12e72a/sv-benchmarks/c/float-benchs/sqrt_poly.c[671,684] [2021-10-29 05:08:53,678 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:08:53,692 INFO L208 MainTranslator]: Completed translation [2021-10-29 05:08:53,693 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:08:53 WrapperNode [2021-10-29 05:08:53,693 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 05:08:53,694 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 05:08:53,694 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 05:08:53,695 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 05:08:53,709 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:08:53" (1/1) ... [2021-10-29 05:08:53,719 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:08:53" (1/1) ... [2021-10-29 05:08:53,739 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 05:08:53,740 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 05:08:53,741 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 05:08:53,741 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 05:08:53,750 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:08:53" (1/1) ... [2021-10-29 05:08:53,750 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:08:53" (1/1) ... [2021-10-29 05:08:53,752 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:08:53" (1/1) ... [2021-10-29 05:08:53,752 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:08:53" (1/1) ... [2021-10-29 05:08:53,767 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:08:53" (1/1) ... [2021-10-29 05:08:53,769 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:08:53" (1/1) ... [2021-10-29 05:08:53,770 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:08:53" (1/1) ... [2021-10-29 05:08:53,772 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 05:08:53,773 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 05:08:53,773 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 05:08:53,773 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 05:08:53,775 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:08:53" (1/1) ... [2021-10-29 05:08:53,783 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:08:53,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3eb733a-2389-4f8f-8ee4-1ce2da12e72a/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:08:53,826 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3eb733a-2389-4f8f-8ee4-1ce2da12e72a/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 05:08:53,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3eb733a-2389-4f8f-8ee4-1ce2da12e72a/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 05:08:53,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-29 05:08:53,876 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 05:08:53,876 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 05:08:53,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 05:08:54,203 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 05:08:54,204 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-10-29 05:08:54,206 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:08:54 BoogieIcfgContainer [2021-10-29 05:08:54,207 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 05:08:54,209 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 05:08:54,209 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 05:08:54,212 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 05:08:54,213 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:08:53" (1/3) ... [2021-10-29 05:08:54,214 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@204c4ef9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:08:54, skipping insertion in model container [2021-10-29 05:08:54,214 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:08:53" (2/3) ... [2021-10-29 05:08:54,214 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@204c4ef9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:08:54, skipping insertion in model container [2021-10-29 05:08:54,215 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:08:54" (3/3) ... [2021-10-29 05:08:54,216 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt_poly.c [2021-10-29 05:08:54,222 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 05:08:54,222 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-29 05:08:54,278 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 05:08:54,286 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-29 05:08:54,286 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-29 05:08:54,307 INFO L276 IsEmpty]: Start isEmpty. Operand has 6 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:08:54,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-29 05:08:54,327 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:08:54,327 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-29 05:08:54,328 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:08:54,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:08:54,335 INFO L85 PathProgramCache]: Analyzing trace with hash 65926, now seen corresponding path program 1 times [2021-10-29 05:08:54,347 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:08:54,348 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566841796] [2021-10-29 05:08:54,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:08:54,349 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:08:54,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 05:08:54,486 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 05:08:54,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 05:08:54,539 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-29 05:08:54,542 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-29 05:08:54,543 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:08:54,546 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-29 05:08:54,550 INFO L731 BasicCegarLoop]: Path program histogram: [1] [2021-10-29 05:08:54,554 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 05:08:54,576 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 05:08:54 BoogieIcfgContainer [2021-10-29 05:08:54,576 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 05:08:54,577 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 05:08:54,577 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 05:08:54,578 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 05:08:54,578 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:08:54" (3/4) ... [2021-10-29 05:08:54,582 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-29 05:08:54,582 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 05:08:54,585 INFO L168 Benchmark]: Toolchain (without parser) took 1205.58 ms. Allocated memory is still 94.4 MB. Free memory was 53.3 MB in the beginning and 41.7 MB in the end (delta: 11.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-29 05:08:54,586 INFO L168 Benchmark]: CDTParser took 1.23 ms. Allocated memory is still 94.4 MB. Free memory is still 69.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:08:54,587 INFO L168 Benchmark]: CACSL2BoogieTranslator took 307.88 ms. Allocated memory is still 94.4 MB. Free memory was 53.1 MB in the beginning and 70.3 MB in the end (delta: -17.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-29 05:08:54,588 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.42 ms. Allocated memory is still 94.4 MB. Free memory was 70.3 MB in the beginning and 69.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:08:54,589 INFO L168 Benchmark]: Boogie Preprocessor took 31.86 ms. Allocated memory is still 94.4 MB. Free memory was 68.7 MB in the beginning and 67.9 MB in the end (delta: 866.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:08:54,590 INFO L168 Benchmark]: RCFGBuilder took 434.00 ms. Allocated memory is still 94.4 MB. Free memory was 67.9 MB in the beginning and 55.9 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-29 05:08:54,591 INFO L168 Benchmark]: TraceAbstraction took 367.73 ms. Allocated memory is still 94.4 MB. Free memory was 55.4 MB in the beginning and 42.3 MB in the end (delta: 13.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-29 05:08:54,592 INFO L168 Benchmark]: Witness Printer took 5.43 ms. Allocated memory is still 94.4 MB. Free memory was 42.2 MB in the beginning and 42.0 MB in the end (delta: 254.4 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:08:54,596 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.23 ms. Allocated memory is still 94.4 MB. Free memory is still 69.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 307.88 ms. Allocated memory is still 94.4 MB. Free memory was 53.1 MB in the beginning and 70.3 MB in the end (delta: -17.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 45.42 ms. Allocated memory is still 94.4 MB. Free memory was 70.3 MB in the beginning and 69.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 31.86 ms. Allocated memory is still 94.4 MB. Free memory was 68.7 MB in the beginning and 67.9 MB in the end (delta: 866.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 434.00 ms. Allocated memory is still 94.4 MB. Free memory was 67.9 MB in the beginning and 55.9 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 367.73 ms. Allocated memory is still 94.4 MB. Free memory was 55.4 MB in the beginning and 42.3 MB in the end (delta: 13.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Witness Printer took 5.43 ms. Allocated memory is still 94.4 MB. Free memory was 42.2 MB in the beginning and 42.0 MB in the end (delta: 254.4 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 16]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 25, overapproximation of someBinaryArithmeticDOUBLEoperation at line 27. Possible FailurePath: [L18] double sqrt2 = 1.414213538169860839843750; [L22] double S, I; [L24] I = __VERIFIER_nondet_double() [L14] COND FALSE !(!cond) [L27] COND TRUE I >= 2. [L27] S = sqrt2 * (1.+(I/2.- 1.)*(.5-0.125*(I/2.-1.))) [L16] COND TRUE !(cond) VAL [sqrt2=11863283/8388608] [L16] reach_error() VAL [sqrt2=11863283/8388608] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-29 05:08:54,659 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3eb733a-2389-4f8f-8ee4-1ce2da12e72a/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-b2eff8b [2021-10-29 05:08:57,438 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 05:08:57,443 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 05:08:57,517 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 05:08:57,518 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 05:08:57,523 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 05:08:57,526 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 05:08:57,531 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 05:08:57,535 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 05:08:57,545 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 05:08:57,547 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 05:08:57,549 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 05:08:57,550 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 05:08:57,553 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 05:08:57,555 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 05:08:57,560 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 05:08:57,563 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 05:08:57,564 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 05:08:57,566 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 05:08:57,576 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 05:08:57,578 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 05:08:57,580 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 05:08:57,584 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 05:08:57,587 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 05:08:57,598 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 05:08:57,599 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 05:08:57,599 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 05:08:57,602 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 05:08:57,603 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 05:08:57,604 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 05:08:57,605 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 05:08:57,606 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 05:08:57,608 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 05:08:57,609 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 05:08:57,611 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 05:08:57,612 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 05:08:57,613 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 05:08:57,613 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 05:08:57,613 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 05:08:57,616 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 05:08:57,617 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 05:08:57,623 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3eb733a-2389-4f8f-8ee4-1ce2da12e72a/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-29 05:08:57,669 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 05:08:57,671 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 05:08:57,672 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 05:08:57,673 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 05:08:57,673 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 05:08:57,673 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 05:08:57,673 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 05:08:57,674 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 05:08:57,674 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 05:08:57,676 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 05:08:57,677 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 05:08:57,677 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 05:08:57,678 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 05:08:57,678 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 05:08:57,678 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 05:08:57,678 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 05:08:57,679 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 05:08:57,679 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-29 05:08:57,679 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-29 05:08:57,679 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 05:08:57,680 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 05:08:57,680 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 05:08:57,680 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 05:08:57,680 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 05:08:57,681 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-29 05:08:57,681 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 05:08:57,681 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:08:57,681 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 05:08:57,682 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 05:08:57,682 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 05:08:57,682 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-29 05:08:57,682 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-29 05:08:57,683 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 05:08:57,683 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 05:08:57,684 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 05:08:57,684 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_worker_vcloud-master_on_vcloud-master/run_dir_a3eb733a-2389-4f8f-8ee4-1ce2da12e72a/bin/utaipan-SDwSMHVbGG/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3eb733a-2389-4f8f-8ee4-1ce2da12e72a/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9ff417092ff6ab1dae16b3d719851bc30771c0c1117076f87d0e779624eadca8 [2021-10-29 05:08:58,153 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 05:08:58,176 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 05:08:58,180 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 05:08:58,181 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 05:08:58,181 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 05:08:58,183 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3eb733a-2389-4f8f-8ee4-1ce2da12e72a/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/float-benchs/sqrt_poly.c [2021-10-29 05:08:58,268 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3eb733a-2389-4f8f-8ee4-1ce2da12e72a/bin/utaipan-SDwSMHVbGG/data/79f43ae19/6882fde9fd5f4b3e8b453e9baf9050b4/FLAGb154cb5e5 [2021-10-29 05:08:58,835 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 05:08:58,836 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3eb733a-2389-4f8f-8ee4-1ce2da12e72a/sv-benchmarks/c/float-benchs/sqrt_poly.c [2021-10-29 05:08:58,848 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3eb733a-2389-4f8f-8ee4-1ce2da12e72a/bin/utaipan-SDwSMHVbGG/data/79f43ae19/6882fde9fd5f4b3e8b453e9baf9050b4/FLAGb154cb5e5 [2021-10-29 05:08:59,188 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3eb733a-2389-4f8f-8ee4-1ce2da12e72a/bin/utaipan-SDwSMHVbGG/data/79f43ae19/6882fde9fd5f4b3e8b453e9baf9050b4 [2021-10-29 05:08:59,195 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 05:08:59,198 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 05:08:59,203 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 05:08:59,203 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 05:08:59,207 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 05:08:59,208 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:08:59" (1/1) ... [2021-10-29 05:08:59,211 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ecfee57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:08:59, skipping insertion in model container [2021-10-29 05:08:59,211 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:08:59" (1/1) ... [2021-10-29 05:08:59,223 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 05:08:59,242 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 05:08:59,437 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3eb733a-2389-4f8f-8ee4-1ce2da12e72a/sv-benchmarks/c/float-benchs/sqrt_poly.c[671,684] [2021-10-29 05:08:59,452 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:08:59,470 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 05:08:59,520 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3eb733a-2389-4f8f-8ee4-1ce2da12e72a/sv-benchmarks/c/float-benchs/sqrt_poly.c[671,684] [2021-10-29 05:08:59,534 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:08:59,552 INFO L208 MainTranslator]: Completed translation [2021-10-29 05:08:59,553 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:08:59 WrapperNode [2021-10-29 05:08:59,553 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 05:08:59,555 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 05:08:59,555 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 05:08:59,555 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 05:08:59,564 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:08:59" (1/1) ... [2021-10-29 05:08:59,574 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:08:59" (1/1) ... [2021-10-29 05:08:59,597 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 05:08:59,598 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 05:08:59,599 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 05:08:59,599 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 05:08:59,609 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:08:59" (1/1) ... [2021-10-29 05:08:59,610 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:08:59" (1/1) ... [2021-10-29 05:08:59,614 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:08:59" (1/1) ... [2021-10-29 05:08:59,614 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:08:59" (1/1) ... [2021-10-29 05:08:59,624 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:08:59" (1/1) ... [2021-10-29 05:08:59,626 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:08:59" (1/1) ... [2021-10-29 05:08:59,629 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:08:59" (1/1) ... [2021-10-29 05:08:59,632 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 05:08:59,634 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 05:08:59,634 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 05:08:59,634 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 05:08:59,635 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:08:59" (1/1) ... [2021-10-29 05:08:59,644 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:08:59,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3eb733a-2389-4f8f-8ee4-1ce2da12e72a/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:08:59,678 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3eb733a-2389-4f8f-8ee4-1ce2da12e72a/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 05:08:59,685 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3eb733a-2389-4f8f-8ee4-1ce2da12e72a/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 05:08:59,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-29 05:08:59,739 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 05:08:59,739 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 05:08:59,739 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 05:09:04,298 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 05:09:04,299 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-10-29 05:09:04,301 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:09:04 BoogieIcfgContainer [2021-10-29 05:09:04,301 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 05:09:04,303 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 05:09:04,304 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 05:09:04,307 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 05:09:04,308 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:08:59" (1/3) ... [2021-10-29 05:09:04,309 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43caa4a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:09:04, skipping insertion in model container [2021-10-29 05:09:04,309 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:08:59" (2/3) ... [2021-10-29 05:09:04,309 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43caa4a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:09:04, skipping insertion in model container [2021-10-29 05:09:04,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:09:04" (3/3) ... [2021-10-29 05:09:04,311 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt_poly.c [2021-10-29 05:09:04,318 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 05:09:04,318 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-29 05:09:04,374 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 05:09:04,382 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-29 05:09:04,382 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-29 05:09:04,397 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:09:04,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-29 05:09:04,403 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:09:04,404 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:09:04,404 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:09:04,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:09:04,411 INFO L85 PathProgramCache]: Analyzing trace with hash 1805028936, now seen corresponding path program 1 times [2021-10-29 05:09:04,423 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:09:04,424 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2078186136] [2021-10-29 05:09:04,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:09:04,426 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:09:04,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3eb733a-2389-4f8f-8ee4-1ce2da12e72a/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:09:04,442 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3eb733a-2389-4f8f-8ee4-1ce2da12e72a/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:09:04,519 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3eb733a-2389-4f8f-8ee4-1ce2da12e72a/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-29 05:09:05,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:09:05,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-29 05:09:05,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:09:05,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:09:05,512 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:09:05,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:09:05,601 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:09:05,602 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2078186136] [2021-10-29 05:09:05,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2078186136] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:09:05,603 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:09:05,603 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-29 05:09:05,606 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643609687] [2021-10-29 05:09:05,611 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-29 05:09:05,612 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:09:05,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-29 05:09:05,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-29 05:09:05,631 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:09:05,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:09:05,647 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2021-10-29 05:09:05,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-29 05:09:05,649 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-29 05:09:05,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:09:05,658 INFO L225 Difference]: With dead ends: 21 [2021-10-29 05:09:05,658 INFO L226 Difference]: Without dead ends: 8 [2021-10-29 05:09:05,661 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-29 05:09:05,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2021-10-29 05:09:05,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2021-10-29 05:09:05,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:09:05,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2021-10-29 05:09:05,687 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 7 [2021-10-29 05:09:05,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:09:05,688 INFO L470 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2021-10-29 05:09:05,688 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:09:05,688 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2021-10-29 05:09:05,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-29 05:09:05,689 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:09:05,689 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:09:05,719 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3eb733a-2389-4f8f-8ee4-1ce2da12e72a/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-29 05:09:05,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3eb733a-2389-4f8f-8ee4-1ce2da12e72a/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:09:05,892 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:09:05,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:09:05,894 INFO L85 PathProgramCache]: Analyzing trace with hash 1806875978, now seen corresponding path program 1 times [2021-10-29 05:09:05,894 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:09:05,895 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1060962617] [2021-10-29 05:09:05,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:09:05,895 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:09:05,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3eb733a-2389-4f8f-8ee4-1ce2da12e72a/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:09:05,897 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3eb733a-2389-4f8f-8ee4-1ce2da12e72a/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:09:05,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3eb733a-2389-4f8f-8ee4-1ce2da12e72a/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-29 05:09:07,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:09:07,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-29 05:09:07,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:09:24,765 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((ULTIMATE.start_main_~I~0 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 2.0))) (and (fp.geq ULTIMATE.start_main_~I~0 .cse0) (= (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 11863283.0 8388608.0)) (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (fp.add c_currentRoundingMode .cse1 (let ((.cse2 (fp.sub c_currentRoundingMode (fp.div c_currentRoundingMode ULTIMATE.start_main_~I~0 .cse0) .cse1))) (fp.mul c_currentRoundingMode .cse2 (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 2.0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 8.0)) .cse2))))))) c_ULTIMATE.start_main_~S~0) (fp.leq ULTIMATE.start_main_~I~0 ((_ to_fp 11 53) c_currentRoundingMode 3.0))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-10-29 05:11:11,983 WARN L838 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_main_~I~0 (_ FloatingPoint 11 53))) (let ((.cse3 ((_ to_fp 11 53) roundNearestTiesToEven 2.0))) (and (fp.leq ULTIMATE.start_main_~I~0 ((_ to_fp 11 53) roundNearestTiesToEven 3.0)) (let ((.cse4 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (let ((.cse2 (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 11863283.0 8388608.0)) (fp.add roundNearestTiesToEven .cse4 (let ((.cse5 (fp.sub roundNearestTiesToEven (fp.div roundNearestTiesToEven ULTIMATE.start_main_~I~0 .cse3) .cse4))) (fp.mul roundNearestTiesToEven .cse5 (fp.sub roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 2.0)) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 8.0)) .cse5)))))))) (let ((.cse0 (fp.geq .cse2 .cse4)) (.cse1 (fp.leq .cse2 .cse3))) (or (and (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32)) .cse0 .cse1) (and (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)) (or (not .cse0) (not .cse1))))))) (fp.geq ULTIMATE.start_main_~I~0 .cse3)))) is different from false [2021-10-29 05:11:14,061 WARN L860 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_main_~I~0 (_ FloatingPoint 11 53))) (let ((.cse3 ((_ to_fp 11 53) roundNearestTiesToEven 2.0))) (and (fp.leq ULTIMATE.start_main_~I~0 ((_ to_fp 11 53) roundNearestTiesToEven 3.0)) (let ((.cse4 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (let ((.cse2 (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 11863283.0 8388608.0)) (fp.add roundNearestTiesToEven .cse4 (let ((.cse5 (fp.sub roundNearestTiesToEven (fp.div roundNearestTiesToEven ULTIMATE.start_main_~I~0 .cse3) .cse4))) (fp.mul roundNearestTiesToEven .cse5 (fp.sub roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 2.0)) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 8.0)) .cse5)))))))) (let ((.cse0 (fp.geq .cse2 .cse4)) (.cse1 (fp.leq .cse2 .cse3))) (or (and (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32)) .cse0 .cse1) (and (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)) (or (not .cse0) (not .cse1))))))) (fp.geq ULTIMATE.start_main_~I~0 .cse3)))) is different from true [2021-10-29 05:12:06,341 WARN L838 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_main_~I~0 (_ FloatingPoint 11 53))) (let ((.cse2 ((_ to_fp 11 53) roundNearestTiesToEven 2.0))) (and (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (let ((.cse0 (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 11863283.0 8388608.0)) (fp.add roundNearestTiesToEven .cse1 (let ((.cse3 (fp.sub roundNearestTiesToEven (fp.div roundNearestTiesToEven ULTIMATE.start_main_~I~0 .cse2) .cse1))) (fp.mul roundNearestTiesToEven .cse3 (fp.sub roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 2.0)) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 8.0)) .cse3)))))))) (or (not (fp.geq .cse0 .cse1)) (not (fp.leq .cse0 .cse2))))) (fp.leq ULTIMATE.start_main_~I~0 ((_ to_fp 11 53) roundNearestTiesToEven 3.0)) (fp.geq ULTIMATE.start_main_~I~0 .cse2)))) is different from false [2021-10-29 05:12:08,416 WARN L860 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_main_~I~0 (_ FloatingPoint 11 53))) (let ((.cse2 ((_ to_fp 11 53) roundNearestTiesToEven 2.0))) (and (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (let ((.cse0 (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 11863283.0 8388608.0)) (fp.add roundNearestTiesToEven .cse1 (let ((.cse3 (fp.sub roundNearestTiesToEven (fp.div roundNearestTiesToEven ULTIMATE.start_main_~I~0 .cse2) .cse1))) (fp.mul roundNearestTiesToEven .cse3 (fp.sub roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 2.0)) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 8.0)) .cse3)))))))) (or (not (fp.geq .cse0 .cse1)) (not (fp.leq .cse0 .cse2))))) (fp.leq ULTIMATE.start_main_~I~0 ((_ to_fp 11 53) roundNearestTiesToEven 3.0)) (fp.geq ULTIMATE.start_main_~I~0 .cse2)))) is different from true [2021-10-29 05:12:08,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:12:08,417 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:12:24,342 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 2.0))) (or (not (fp.geq c_ULTIMATE.start_main_~I~0 .cse0)) (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse1 (fp.mul c_currentRoundingMode c_~sqrt2~0 (fp.add c_currentRoundingMode .cse2 (let ((.cse3 (fp.sub c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~I~0 .cse0) .cse2))) (fp.mul c_currentRoundingMode .cse3 (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 2.0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 8.0)) .cse3)))))))) (and (fp.geq .cse1 .cse2) (fp.leq .cse1 .cse0)))))) is different from false [2021-10-29 05:12:26,487 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 2.0))) (or (not (fp.geq c_ULTIMATE.start_main_~I~0 .cse0)) (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse1 (fp.mul c_currentRoundingMode c_~sqrt2~0 (fp.add c_currentRoundingMode .cse2 (let ((.cse3 (fp.sub c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~I~0 .cse0) .cse2))) (fp.mul c_currentRoundingMode .cse3 (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 2.0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 8.0)) .cse3)))))))) (and (fp.geq .cse1 .cse2) (fp.leq .cse1 .cse0)))))) is different from true [2021-10-29 05:12:46,625 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 2.0))) (or (= c_ULTIMATE.start_assume_abort_if_not_~cond (_ bv0 32)) (not (fp.geq c_ULTIMATE.start_main_~I~0 .cse0)) (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse1 (fp.mul c_currentRoundingMode c_~sqrt2~0 (fp.add c_currentRoundingMode .cse2 (let ((.cse3 (fp.sub c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~I~0 .cse0) .cse2))) (fp.mul c_currentRoundingMode .cse3 (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 2.0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 8.0)) .cse3)))))))) (and (fp.geq .cse1 .cse2) (fp.leq .cse1 .cse0)))))) is different from false [2021-10-29 05:12:48,766 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 2.0))) (or (= c_ULTIMATE.start_assume_abort_if_not_~cond (_ bv0 32)) (not (fp.geq c_ULTIMATE.start_main_~I~0 .cse0)) (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse1 (fp.mul c_currentRoundingMode c_~sqrt2~0 (fp.add c_currentRoundingMode .cse2 (let ((.cse3 (fp.sub c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~I~0 .cse0) .cse2))) (fp.mul c_currentRoundingMode .cse3 (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 2.0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 8.0)) .cse3)))))))) (and (fp.geq .cse1 .cse2) (fp.leq .cse1 .cse0)))))) is different from true [2021-10-29 05:13:43,630 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~I~0_8 (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 2.0))) (or (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse0 (fp.mul c_currentRoundingMode c_~sqrt2~0 (fp.add c_currentRoundingMode .cse2 (let ((.cse3 (fp.sub c_currentRoundingMode (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~I~0_8 .cse1) .cse2))) (fp.mul c_currentRoundingMode .cse3 (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 2.0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 8.0)) .cse3)))))))) (and (fp.leq .cse0 .cse1) (fp.geq .cse0 .cse2)))) (not (fp.leq v_ULTIMATE.start_main_~I~0_8 ((_ to_fp 11 53) c_currentRoundingMode 3.0))) (not (fp.geq v_ULTIMATE.start_main_~I~0_8 .cse1))))) is different from false [2021-10-29 05:13:45,806 WARN L860 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~I~0_8 (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 2.0))) (or (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse0 (fp.mul c_currentRoundingMode c_~sqrt2~0 (fp.add c_currentRoundingMode .cse2 (let ((.cse3 (fp.sub c_currentRoundingMode (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~I~0_8 .cse1) .cse2))) (fp.mul c_currentRoundingMode .cse3 (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 2.0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 8.0)) .cse3)))))))) (and (fp.leq .cse0 .cse1) (fp.geq .cse0 .cse2)))) (not (fp.leq v_ULTIMATE.start_main_~I~0_8 ((_ to_fp 11 53) c_currentRoundingMode 3.0))) (not (fp.geq v_ULTIMATE.start_main_~I~0_8 .cse1))))) is different from true [2021-10-29 05:13:45,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:13:45,807 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:13:45,807 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1060962617] [2021-10-29 05:13:45,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1060962617] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:13:45,808 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:13:45,808 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 12 [2021-10-29 05:13:45,808 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355949696] [2021-10-29 05:13:45,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-29 05:13:45,810 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:13:45,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-29 05:13:45,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=30, Unknown=11, NotChecked=90, Total=156 [2021-10-29 05:13:45,812 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand has 13 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:13:47,930 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ULTIMATE.start_main_~I~0_8 (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 2.0))) (or (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse0 (fp.mul c_currentRoundingMode c_~sqrt2~0 (fp.add c_currentRoundingMode .cse2 (let ((.cse3 (fp.sub c_currentRoundingMode (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~I~0_8 .cse1) .cse2))) (fp.mul c_currentRoundingMode .cse3 (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 2.0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 8.0)) .cse3)))))))) (and (fp.leq .cse0 .cse1) (fp.geq .cse0 .cse2)))) (not (fp.leq v_ULTIMATE.start_main_~I~0_8 ((_ to_fp 11 53) c_currentRoundingMode 3.0))) (not (fp.geq v_ULTIMATE.start_main_~I~0_8 .cse1))))) (= c_~sqrt2~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 11863283.0 8388608.0))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-10-29 05:13:50,095 WARN L860 $PredicateComparison]: unable to prove that (and (forall ((v_ULTIMATE.start_main_~I~0_8 (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 2.0))) (or (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse0 (fp.mul c_currentRoundingMode c_~sqrt2~0 (fp.add c_currentRoundingMode .cse2 (let ((.cse3 (fp.sub c_currentRoundingMode (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~I~0_8 .cse1) .cse2))) (fp.mul c_currentRoundingMode .cse3 (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 2.0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 8.0)) .cse3)))))))) (and (fp.leq .cse0 .cse1) (fp.geq .cse0 .cse2)))) (not (fp.leq v_ULTIMATE.start_main_~I~0_8 ((_ to_fp 11 53) c_currentRoundingMode 3.0))) (not (fp.geq v_ULTIMATE.start_main_~I~0_8 .cse1))))) (= c_~sqrt2~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 11863283.0 8388608.0))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-10-29 05:13:52,213 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (= c_ULTIMATE.start_assume_abort_if_not_~cond (_ bv0 32))) (.cse3 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 2.0))) (or .cse0 (not (fp.geq c_ULTIMATE.start_main_~I~0 .cse1)) (let ((.cse2 (fp.mul c_currentRoundingMode c_~sqrt2~0 (fp.add c_currentRoundingMode .cse3 (let ((.cse4 (fp.sub c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~I~0 .cse1) .cse3))) (fp.mul c_currentRoundingMode .cse4 (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 2.0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 8.0)) .cse4)))))))) (and (fp.geq .cse2 .cse3) (fp.leq .cse2 .cse1))))) (= c_~sqrt2~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 11863283.0 8388608.0))) (= c_currentRoundingMode roundNearestTiesToEven) (let ((.cse5 (fp.leq c_ULTIMATE.start_main_~I~0 ((_ to_fp 11 53) c_currentRoundingMode 3.0))) (.cse6 (fp.geq c_ULTIMATE.start_main_~I~0 .cse3))) (or (and .cse0 (or (not .cse5) (not .cse6))) (and (= c_ULTIMATE.start_assume_abort_if_not_~cond (_ bv1 32)) .cse5 .cse6))))) is different from false [2021-10-29 05:13:54,348 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (= c_ULTIMATE.start_assume_abort_if_not_~cond (_ bv0 32))) (.cse3 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 2.0))) (or .cse0 (not (fp.geq c_ULTIMATE.start_main_~I~0 .cse1)) (let ((.cse2 (fp.mul c_currentRoundingMode c_~sqrt2~0 (fp.add c_currentRoundingMode .cse3 (let ((.cse4 (fp.sub c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~I~0 .cse1) .cse3))) (fp.mul c_currentRoundingMode .cse4 (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 2.0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 8.0)) .cse4)))))))) (and (fp.geq .cse2 .cse3) (fp.leq .cse2 .cse1))))) (= c_~sqrt2~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 11863283.0 8388608.0))) (= c_currentRoundingMode roundNearestTiesToEven) (let ((.cse5 (fp.leq c_ULTIMATE.start_main_~I~0 ((_ to_fp 11 53) c_currentRoundingMode 3.0))) (.cse6 (fp.geq c_ULTIMATE.start_main_~I~0 .cse3))) (or (and .cse0 (or (not .cse5) (not .cse6))) (and (= c_ULTIMATE.start_assume_abort_if_not_~cond (_ bv1 32)) .cse5 .cse6))))) is different from true [2021-10-29 05:13:56,472 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (fp.leq c_ULTIMATE.start_main_~I~0 ((_ to_fp 11 53) c_currentRoundingMode 3.0)) (fp.geq c_ULTIMATE.start_main_~I~0 .cse0) (= c_~sqrt2~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 11863283.0 8388608.0))) (= c_currentRoundingMode roundNearestTiesToEven) (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 2.0))) (or (not (fp.geq c_ULTIMATE.start_main_~I~0 .cse1)) (let ((.cse2 (fp.mul c_currentRoundingMode c_~sqrt2~0 (fp.add c_currentRoundingMode .cse0 (let ((.cse3 (fp.sub c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~I~0 .cse1) .cse0))) (fp.mul c_currentRoundingMode .cse3 (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 2.0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 8.0)) .cse3)))))))) (and (fp.geq .cse2 .cse0) (fp.leq .cse2 .cse1))))))) is different from false [2021-10-29 05:13:58,623 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (fp.leq c_ULTIMATE.start_main_~I~0 ((_ to_fp 11 53) c_currentRoundingMode 3.0)) (fp.geq c_ULTIMATE.start_main_~I~0 .cse0) (= c_~sqrt2~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 11863283.0 8388608.0))) (= c_currentRoundingMode roundNearestTiesToEven) (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 2.0))) (or (not (fp.geq c_ULTIMATE.start_main_~I~0 .cse1)) (let ((.cse2 (fp.mul c_currentRoundingMode c_~sqrt2~0 (fp.add c_currentRoundingMode .cse0 (let ((.cse3 (fp.sub c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~I~0 .cse1) .cse0))) (fp.mul c_currentRoundingMode .cse3 (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 2.0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 8.0)) .cse3)))))))) (and (fp.geq .cse2 .cse0) (fp.leq .cse2 .cse1))))))) is different from true [2021-10-29 05:14:00,752 WARN L838 $PredicateComparison]: unable to prove that (and (fp.geq c_ULTIMATE.start_main_~S~0 ((_ to_fp 11 53) c_currentRoundingMode 1.0)) (exists ((ULTIMATE.start_main_~I~0 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 2.0))) (and (fp.geq ULTIMATE.start_main_~I~0 .cse0) (= (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 11863283.0 8388608.0)) (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (fp.add c_currentRoundingMode .cse1 (let ((.cse2 (fp.sub c_currentRoundingMode (fp.div c_currentRoundingMode ULTIMATE.start_main_~I~0 .cse0) .cse1))) (fp.mul c_currentRoundingMode .cse2 (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 2.0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 8.0)) .cse2))))))) c_ULTIMATE.start_main_~S~0) (fp.leq ULTIMATE.start_main_~I~0 ((_ to_fp 11 53) c_currentRoundingMode 3.0))))) (fp.leq c_ULTIMATE.start_main_~S~0 ((_ to_fp 11 53) c_currentRoundingMode 2.0)) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-10-29 05:14:02,880 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((ULTIMATE.start_main_~I~0 (_ FloatingPoint 11 53))) (let ((.cse3 ((_ to_fp 11 53) roundNearestTiesToEven 2.0))) (and (fp.leq ULTIMATE.start_main_~I~0 ((_ to_fp 11 53) roundNearestTiesToEven 3.0)) (let ((.cse4 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (let ((.cse2 (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 11863283.0 8388608.0)) (fp.add roundNearestTiesToEven .cse4 (let ((.cse5 (fp.sub roundNearestTiesToEven (fp.div roundNearestTiesToEven ULTIMATE.start_main_~I~0 .cse3) .cse4))) (fp.mul roundNearestTiesToEven .cse5 (fp.sub roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 2.0)) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 8.0)) .cse5)))))))) (let ((.cse0 (fp.geq .cse2 .cse4)) (.cse1 (fp.leq .cse2 .cse3))) (or (and (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32)) .cse0 .cse1) (and (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)) (or (not .cse0) (not .cse1))))))) (fp.geq ULTIMATE.start_main_~I~0 .cse3)))) (not (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)))) is different from false [2021-10-29 05:14:02,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:14:02,946 INFO L93 Difference]: Finished difference Result 12 states and 11 transitions. [2021-10-29 05:14:02,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-29 05:14:02,946 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-29 05:14:02,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:14:02,947 INFO L225 Difference]: With dead ends: 12 [2021-10-29 05:14:02,947 INFO L226 Difference]: Without dead ends: 8 [2021-10-29 05:14:02,949 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 11 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 40.9s TimeCoverageRelationStatistics Valid=35, Invalid=32, Unknown=19, NotChecked=220, Total=306 [2021-10-29 05:14:02,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2021-10-29 05:14:02,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2021-10-29 05:14:02,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.0) internal successors, (7), 7 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:14:02,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 7 transitions. [2021-10-29 05:14:02,951 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 7 transitions. Word has length 7 [2021-10-29 05:14:02,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:14:02,951 INFO L470 AbstractCegarLoop]: Abstraction has 8 states and 7 transitions. [2021-10-29 05:14:02,952 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:14:02,952 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 7 transitions. [2021-10-29 05:14:02,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-29 05:14:02,953 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:14:02,953 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:14:02,979 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3eb733a-2389-4f8f-8ee4-1ce2da12e72a/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-29 05:14:03,153 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3eb733a-2389-4f8f-8ee4-1ce2da12e72a/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:14:03,154 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:14:03,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:14:03,155 INFO L85 PathProgramCache]: Analyzing trace with hash 1806935560, now seen corresponding path program 1 times [2021-10-29 05:14:03,155 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:14:03,156 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1813981188] [2021-10-29 05:14:03,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:14:03,156 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:14:03,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3eb733a-2389-4f8f-8ee4-1ce2da12e72a/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:14:03,158 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3eb733a-2389-4f8f-8ee4-1ce2da12e72a/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:14:03,161 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3eb733a-2389-4f8f-8ee4-1ce2da12e72a/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-29 05:14:15,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:14:15,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-29 05:14:15,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:14:52,331 WARN L207 SmtUtils]: Spent 10.70 s on a formula simplification that was a NOOP. DAG size: 30 [2021-10-29 05:16:38,626 WARN L838 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_main_~I~0 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven 2.0)) (.cse4 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (and (not (fp.geq ULTIMATE.start_main_~I~0 .cse0)) (let ((.cse3 (fp.add roundNearestTiesToEven .cse4 (let ((.cse5 (fp.sub roundNearestTiesToEven ULTIMATE.start_main_~I~0 .cse4))) (fp.mul roundNearestTiesToEven .cse5 (fp.add roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 2.0)) (fp.mul roundNearestTiesToEven .cse5 (fp.add roundNearestTiesToEven (fp.neg ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 8.0))) (fp.mul roundNearestTiesToEven .cse5 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 16.0))))))))))) (let ((.cse1 (fp.leq .cse3 .cse0)) (.cse2 (fp.geq .cse3 .cse4))) (or (and .cse1 (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32)) .cse2) (and (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)) (or (not .cse1) (not .cse2)))))) (fp.geq ULTIMATE.start_main_~I~0 .cse4)))) is different from false [2021-10-29 05:16:40,704 WARN L860 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_main_~I~0 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven 2.0)) (.cse4 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (and (not (fp.geq ULTIMATE.start_main_~I~0 .cse0)) (let ((.cse3 (fp.add roundNearestTiesToEven .cse4 (let ((.cse5 (fp.sub roundNearestTiesToEven ULTIMATE.start_main_~I~0 .cse4))) (fp.mul roundNearestTiesToEven .cse5 (fp.add roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 2.0)) (fp.mul roundNearestTiesToEven .cse5 (fp.add roundNearestTiesToEven (fp.neg ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 8.0))) (fp.mul roundNearestTiesToEven .cse5 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 16.0))))))))))) (let ((.cse1 (fp.leq .cse3 .cse0)) (.cse2 (fp.geq .cse3 .cse4))) (or (and .cse1 (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32)) .cse2) (and (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)) (or (not .cse1) (not .cse2)))))) (fp.geq ULTIMATE.start_main_~I~0 .cse4)))) is different from true [2021-10-29 05:17:32,914 WARN L838 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_main_~I~0 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven 2.0)) (.cse2 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (and (not (fp.geq ULTIMATE.start_main_~I~0 .cse0)) (let ((.cse1 (fp.add roundNearestTiesToEven .cse2 (let ((.cse3 (fp.sub roundNearestTiesToEven ULTIMATE.start_main_~I~0 .cse2))) (fp.mul roundNearestTiesToEven .cse3 (fp.add roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 2.0)) (fp.mul roundNearestTiesToEven .cse3 (fp.add roundNearestTiesToEven (fp.neg ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 8.0))) (fp.mul roundNearestTiesToEven .cse3 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 16.0))))))))))) (or (not (fp.leq .cse1 .cse0)) (not (fp.geq .cse1 .cse2)))) (fp.geq ULTIMATE.start_main_~I~0 .cse2)))) is different from false [2021-10-29 05:17:34,988 WARN L860 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_main_~I~0 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven 2.0)) (.cse2 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (and (not (fp.geq ULTIMATE.start_main_~I~0 .cse0)) (let ((.cse1 (fp.add roundNearestTiesToEven .cse2 (let ((.cse3 (fp.sub roundNearestTiesToEven ULTIMATE.start_main_~I~0 .cse2))) (fp.mul roundNearestTiesToEven .cse3 (fp.add roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 2.0)) (fp.mul roundNearestTiesToEven .cse3 (fp.add roundNearestTiesToEven (fp.neg ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 8.0))) (fp.mul roundNearestTiesToEven .cse3 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 16.0))))))))))) (or (not (fp.leq .cse1 .cse0)) (not (fp.geq .cse1 .cse2)))) (fp.geq ULTIMATE.start_main_~I~0 .cse2)))) is different from true [2021-10-29 05:17:34,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:17:34,989 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:17:54,897 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 2.0))) (or (fp.geq c_ULTIMATE.start_main_~I~0 .cse0) (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse1 (fp.add c_currentRoundingMode .cse2 (let ((.cse3 (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~I~0 .cse2))) (fp.mul c_currentRoundingMode .cse3 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 2.0)) (fp.mul c_currentRoundingMode .cse3 (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 8.0))) (fp.mul c_currentRoundingMode .cse3 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 16.0))))))))))) (and (fp.geq .cse1 .cse2) (fp.leq .cse1 .cse0)))))) is different from false [2021-10-29 05:17:57,034 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 2.0))) (or (fp.geq c_ULTIMATE.start_main_~I~0 .cse0) (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse1 (fp.add c_currentRoundingMode .cse2 (let ((.cse3 (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~I~0 .cse2))) (fp.mul c_currentRoundingMode .cse3 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 2.0)) (fp.mul c_currentRoundingMode .cse3 (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 8.0))) (fp.mul c_currentRoundingMode .cse3 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 16.0))))))))))) (and (fp.geq .cse1 .cse2) (fp.leq .cse1 .cse0)))))) is different from true [2021-10-29 05:18:16,872 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 2.0))) (or (fp.geq c_ULTIMATE.start_main_~I~0 .cse0) (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse1 (fp.add c_currentRoundingMode .cse2 (let ((.cse3 (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~I~0 .cse2))) (fp.mul c_currentRoundingMode .cse3 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 2.0)) (fp.mul c_currentRoundingMode .cse3 (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 8.0))) (fp.mul c_currentRoundingMode .cse3 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 16.0))))))))))) (and (fp.geq .cse1 .cse2) (fp.leq .cse1 .cse0)))) (= c_ULTIMATE.start_assume_abort_if_not_~cond (_ bv0 32)))) is different from false [2021-10-29 05:18:18,992 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 2.0))) (or (fp.geq c_ULTIMATE.start_main_~I~0 .cse0) (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse1 (fp.add c_currentRoundingMode .cse2 (let ((.cse3 (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~I~0 .cse2))) (fp.mul c_currentRoundingMode .cse3 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 2.0)) (fp.mul c_currentRoundingMode .cse3 (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 8.0))) (fp.mul c_currentRoundingMode .cse3 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 16.0))))))))))) (and (fp.geq .cse1 .cse2) (fp.leq .cse1 .cse0)))) (= c_ULTIMATE.start_assume_abort_if_not_~cond (_ bv0 32)))) is different from true [2021-10-29 05:19:12,468 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~I~0_9 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 2.0)) (.cse2 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (or (fp.geq v_ULTIMATE.start_main_~I~0_9 .cse0) (let ((.cse1 (fp.add c_currentRoundingMode .cse2 (let ((.cse3 (fp.sub c_currentRoundingMode v_ULTIMATE.start_main_~I~0_9 .cse2))) (fp.mul c_currentRoundingMode .cse3 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 2.0)) (fp.mul c_currentRoundingMode .cse3 (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 8.0))) (fp.mul c_currentRoundingMode .cse3 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 16.0))))))))))) (and (fp.geq .cse1 .cse2) (fp.leq .cse1 .cse0))) (not (fp.geq v_ULTIMATE.start_main_~I~0_9 .cse2))))) is different from false [2021-10-29 05:19:14,599 WARN L860 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~I~0_9 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 2.0)) (.cse2 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (or (fp.geq v_ULTIMATE.start_main_~I~0_9 .cse0) (let ((.cse1 (fp.add c_currentRoundingMode .cse2 (let ((.cse3 (fp.sub c_currentRoundingMode v_ULTIMATE.start_main_~I~0_9 .cse2))) (fp.mul c_currentRoundingMode .cse3 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 2.0)) (fp.mul c_currentRoundingMode .cse3 (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 8.0))) (fp.mul c_currentRoundingMode .cse3 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 16.0))))))))))) (and (fp.geq .cse1 .cse2) (fp.leq .cse1 .cse0))) (not (fp.geq v_ULTIMATE.start_main_~I~0_9 .cse2))))) is different from true [2021-10-29 05:19:14,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:19:14,599 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:19:14,600 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1813981188] [2021-10-29 05:19:14,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1813981188] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:19:14,600 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:19:14,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 12 [2021-10-29 05:19:14,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834069154] [2021-10-29 05:19:14,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-29 05:19:14,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:19:14,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-29 05:19:14,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=33, Unknown=17, NotChecked=80, Total=156 [2021-10-29 05:19:14,602 INFO L87 Difference]: Start difference. First operand 8 states and 7 transitions. Second operand has 13 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:19:18,804 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ULTIMATE.start_main_~I~0_9 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 2.0)) (.cse2 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (or (fp.geq v_ULTIMATE.start_main_~I~0_9 .cse0) (let ((.cse1 (fp.add c_currentRoundingMode .cse2 (let ((.cse3 (fp.sub c_currentRoundingMode v_ULTIMATE.start_main_~I~0_9 .cse2))) (fp.mul c_currentRoundingMode .cse3 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 2.0)) (fp.mul c_currentRoundingMode .cse3 (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 8.0))) (fp.mul c_currentRoundingMode .cse3 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 16.0))))))))))) (and (fp.geq .cse1 .cse2) (fp.leq .cse1 .cse0))) (not (fp.geq v_ULTIMATE.start_main_~I~0_9 .cse2))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-10-29 05:19:20,932 WARN L860 $PredicateComparison]: unable to prove that (and (forall ((v_ULTIMATE.start_main_~I~0_9 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 2.0)) (.cse2 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (or (fp.geq v_ULTIMATE.start_main_~I~0_9 .cse0) (let ((.cse1 (fp.add c_currentRoundingMode .cse2 (let ((.cse3 (fp.sub c_currentRoundingMode v_ULTIMATE.start_main_~I~0_9 .cse2))) (fp.mul c_currentRoundingMode .cse3 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 2.0)) (fp.mul c_currentRoundingMode .cse3 (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 8.0))) (fp.mul c_currentRoundingMode .cse3 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 16.0))))))))))) (and (fp.geq .cse1 .cse2) (fp.leq .cse1 .cse0))) (not (fp.geq v_ULTIMATE.start_main_~I~0_9 .cse2))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-10-29 05:19:23,064 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse4 (= c_ULTIMATE.start_assume_abort_if_not_~cond (_ bv0 32))) (.cse2 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 2.0))) (or (fp.geq c_ULTIMATE.start_main_~I~0 .cse0) (let ((.cse1 (fp.add c_currentRoundingMode .cse2 (let ((.cse3 (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~I~0 .cse2))) (fp.mul c_currentRoundingMode .cse3 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 2.0)) (fp.mul c_currentRoundingMode .cse3 (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 8.0))) (fp.mul c_currentRoundingMode .cse3 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 16.0))))))))))) (and (fp.geq .cse1 .cse2) (fp.leq .cse1 .cse0))) .cse4)) (= c_currentRoundingMode roundNearestTiesToEven) (let ((.cse5 (fp.leq c_ULTIMATE.start_main_~I~0 ((_ to_fp 11 53) c_currentRoundingMode 3.0))) (.cse6 (fp.geq c_ULTIMATE.start_main_~I~0 .cse2))) (or (and .cse4 (or (not .cse5) (not .cse6))) (and (= c_ULTIMATE.start_assume_abort_if_not_~cond (_ bv1 32)) .cse5 .cse6))))) is different from false [2021-10-29 05:19:25,198 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse4 (= c_ULTIMATE.start_assume_abort_if_not_~cond (_ bv0 32))) (.cse2 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 2.0))) (or (fp.geq c_ULTIMATE.start_main_~I~0 .cse0) (let ((.cse1 (fp.add c_currentRoundingMode .cse2 (let ((.cse3 (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~I~0 .cse2))) (fp.mul c_currentRoundingMode .cse3 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 2.0)) (fp.mul c_currentRoundingMode .cse3 (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 8.0))) (fp.mul c_currentRoundingMode .cse3 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 16.0))))))))))) (and (fp.geq .cse1 .cse2) (fp.leq .cse1 .cse0))) .cse4)) (= c_currentRoundingMode roundNearestTiesToEven) (let ((.cse5 (fp.leq c_ULTIMATE.start_main_~I~0 ((_ to_fp 11 53) c_currentRoundingMode 3.0))) (.cse6 (fp.geq c_ULTIMATE.start_main_~I~0 .cse2))) (or (and .cse4 (or (not .cse5) (not .cse6))) (and (= c_ULTIMATE.start_assume_abort_if_not_~cond (_ bv1 32)) .cse5 .cse6))))) is different from true [2021-10-29 05:19:27,346 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 2.0))) (or (fp.geq c_ULTIMATE.start_main_~I~0 .cse0) (let ((.cse1 (fp.add c_currentRoundingMode .cse2 (let ((.cse3 (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~I~0 .cse2))) (fp.mul c_currentRoundingMode .cse3 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 2.0)) (fp.mul c_currentRoundingMode .cse3 (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 8.0))) (fp.mul c_currentRoundingMode .cse3 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 16.0))))))))))) (and (fp.geq .cse1 .cse2) (fp.leq .cse1 .cse0))))) (fp.leq c_ULTIMATE.start_main_~I~0 ((_ to_fp 11 53) c_currentRoundingMode 3.0)) (fp.geq c_ULTIMATE.start_main_~I~0 .cse2) (= c_currentRoundingMode roundNearestTiesToEven))) is different from false [2021-10-29 05:19:29,486 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 2.0))) (or (fp.geq c_ULTIMATE.start_main_~I~0 .cse0) (let ((.cse1 (fp.add c_currentRoundingMode .cse2 (let ((.cse3 (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~I~0 .cse2))) (fp.mul c_currentRoundingMode .cse3 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 2.0)) (fp.mul c_currentRoundingMode .cse3 (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 8.0))) (fp.mul c_currentRoundingMode .cse3 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 16.0))))))))))) (and (fp.geq .cse1 .cse2) (fp.leq .cse1 .cse0))))) (fp.leq c_ULTIMATE.start_main_~I~0 ((_ to_fp 11 53) c_currentRoundingMode 3.0)) (fp.geq c_ULTIMATE.start_main_~I~0 .cse2) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-10-29 05:19:31,634 WARN L838 $PredicateComparison]: unable to prove that (and (fp.geq c_ULTIMATE.start_main_~S~0 ((_ to_fp 11 53) c_currentRoundingMode 1.0)) (exists ((ULTIMATE.start_main_~I~0 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (fp.geq ULTIMATE.start_main_~I~0 .cse0) (= c_ULTIMATE.start_main_~S~0 (fp.add c_currentRoundingMode .cse0 (let ((.cse1 (fp.sub c_currentRoundingMode ULTIMATE.start_main_~I~0 .cse0))) (fp.mul c_currentRoundingMode .cse1 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 2.0)) (fp.mul c_currentRoundingMode .cse1 (fp.add c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 8.0))) (fp.mul c_currentRoundingMode .cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 16.0)))))))))) (not (fp.geq ULTIMATE.start_main_~I~0 ((_ to_fp 11 53) c_currentRoundingMode 2.0)))))) (fp.leq c_ULTIMATE.start_main_~S~0 ((_ to_fp 11 53) c_currentRoundingMode 2.0)) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-10-29 05:19:33,778 WARN L838 $PredicateComparison]: unable to prove that (and (not (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32))) (exists ((ULTIMATE.start_main_~I~0 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven 2.0)) (.cse4 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (and (not (fp.geq ULTIMATE.start_main_~I~0 .cse0)) (let ((.cse3 (fp.add roundNearestTiesToEven .cse4 (let ((.cse5 (fp.sub roundNearestTiesToEven ULTIMATE.start_main_~I~0 .cse4))) (fp.mul roundNearestTiesToEven .cse5 (fp.add roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 2.0)) (fp.mul roundNearestTiesToEven .cse5 (fp.add roundNearestTiesToEven (fp.neg ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 8.0))) (fp.mul roundNearestTiesToEven .cse5 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 16.0))))))))))) (let ((.cse1 (fp.leq .cse3 .cse0)) (.cse2 (fp.geq .cse3 .cse4))) (or (and .cse1 (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32)) .cse2) (and (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)) (or (not .cse1) (not .cse2)))))) (fp.geq ULTIMATE.start_main_~I~0 .cse4))))) is different from false [2021-10-29 05:19:33,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:19:33,791 INFO L93 Difference]: Finished difference Result 8 states and 7 transitions. [2021-10-29 05:19:33,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-29 05:19:33,791 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-29 05:19:33,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:19:33,791 INFO L225 Difference]: With dead ends: 8 [2021-10-29 05:19:33,791 INFO L226 Difference]: Without dead ends: 0 [2021-10-29 05:19:33,792 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 10 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 65.5s TimeCoverageRelationStatistics Valid=36, Invalid=35, Unknown=25, NotChecked=210, Total=306 [2021-10-29 05:19:33,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-29 05:19:33,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-29 05:19:33,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:19:33,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-29 05:19:33,793 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2021-10-29 05:19:33,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:19:33,793 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-29 05:19:33,793 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:19:33,793 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-29 05:19:33,793 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-29 05:19:33,796 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:19:33,816 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3eb733a-2389-4f8f-8ee4-1ce2da12e72a/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-29 05:19:33,997 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3eb733a-2389-4f8f-8ee4-1ce2da12e72a/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:19:33,999 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-29 05:19:34,002 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:19:34,025 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:19:34,029 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-29 05:19:34,029 INFO L860 garLoopResultBuilder]: At program point L31(lines 20 32) the Hoare annotation is: true [2021-10-29 05:19:34,030 INFO L857 garLoopResultBuilder]: For program point L27-1(lines 27 28) no Hoare annotation was computed. [2021-10-29 05:19:34,030 INFO L857 garLoopResultBuilder]: For program point L13(lines 27 28) no Hoare annotation was computed. [2021-10-29 05:19:34,030 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-29 05:19:34,030 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-29 05:19:34,030 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-29 05:19:34,031 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2021-10-29 05:19:34,031 INFO L857 garLoopResultBuilder]: For program point L16(line 16) no Hoare annotation was computed. [2021-10-29 05:19:34,031 INFO L857 garLoopResultBuilder]: For program point L16-1(line 16) no Hoare annotation was computed. [2021-10-29 05:19:34,031 INFO L857 garLoopResultBuilder]: For program point L14(line 14) no Hoare annotation was computed. [2021-10-29 05:19:34,031 INFO L860 garLoopResultBuilder]: At program point L16-3(line 16) the Hoare annotation is: true [2021-10-29 05:19:34,034 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-10-29 05:19:34,036 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 05:19:34,040 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 05:19:34 BoogieIcfgContainer [2021-10-29 05:19:34,040 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 05:19:34,041 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 05:19:34,041 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 05:19:34,041 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 05:19:34,042 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:09:04" (3/4) ... [2021-10-29 05:19:34,045 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-29 05:19:34,055 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2021-10-29 05:19:34,055 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-10-29 05:19:34,055 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-29 05:19:34,055 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-29 05:19:34,090 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3eb733a-2389-4f8f-8ee4-1ce2da12e72a/bin/utaipan-SDwSMHVbGG/witness.graphml [2021-10-29 05:19:34,090 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 05:19:34,091 INFO L168 Benchmark]: Toolchain (without parser) took 634892.94 ms. Allocated memory was 67.1 MB in the beginning and 81.8 MB in the end (delta: 14.7 MB). Free memory was 47.1 MB in the beginning and 51.5 MB in the end (delta: -4.5 MB). Peak memory consumption was 9.8 MB. Max. memory is 16.1 GB. [2021-10-29 05:19:34,092 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 67.1 MB. Free memory is still 48.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:19:34,092 INFO L168 Benchmark]: CACSL2BoogieTranslator took 351.11 ms. Allocated memory is still 67.1 MB. Free memory was 46.9 MB in the beginning and 49.4 MB in the end (delta: -2.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-29 05:19:34,093 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.01 ms. Allocated memory is still 67.1 MB. Free memory was 49.4 MB in the beginning and 47.8 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:19:34,093 INFO L168 Benchmark]: Boogie Preprocessor took 34.30 ms. Allocated memory is still 67.1 MB. Free memory was 47.8 MB in the beginning and 46.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:19:34,094 INFO L168 Benchmark]: RCFGBuilder took 4667.85 ms. Allocated memory is still 67.1 MB. Free memory was 46.5 MB in the beginning and 37.1 MB in the end (delta: 9.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-29 05:19:34,095 INFO L168 Benchmark]: TraceAbstraction took 629737.13 ms. Allocated memory was 67.1 MB in the beginning and 81.8 MB in the end (delta: 14.7 MB). Free memory was 36.6 MB in the beginning and 54.3 MB in the end (delta: -17.6 MB). Peak memory consumption was 440.6 kB. Max. memory is 16.1 GB. [2021-10-29 05:19:34,095 INFO L168 Benchmark]: Witness Printer took 48.96 ms. Allocated memory is still 81.8 MB. Free memory was 54.3 MB in the beginning and 51.5 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:19:34,098 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 67.1 MB. Free memory is still 48.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 351.11 ms. Allocated memory is still 67.1 MB. Free memory was 46.9 MB in the beginning and 49.4 MB in the end (delta: -2.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 43.01 ms. Allocated memory is still 67.1 MB. Free memory was 49.4 MB in the beginning and 47.8 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 34.30 ms. Allocated memory is still 67.1 MB. Free memory was 47.8 MB in the beginning and 46.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 4667.85 ms. Allocated memory is still 67.1 MB. Free memory was 46.5 MB in the beginning and 37.1 MB in the end (delta: 9.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 629737.13 ms. Allocated memory was 67.1 MB in the beginning and 81.8 MB in the end (delta: 14.7 MB). Free memory was 36.6 MB in the beginning and 54.3 MB in the end (delta: -17.6 MB). Peak memory consumption was 440.6 kB. Max. memory is 16.1 GB. * Witness Printer took 48.96 ms. Allocated memory is still 81.8 MB. Free memory was 54.3 MB in the beginning and 51.5 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 16]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 629.6s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 36.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 17 SDtfs, 0 SDslu, 11 SDs, 0 SdLazy, 11 SolverSat, 0 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 2.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 46 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 21 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 106.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred in iteration=0, InterpolantAutomatonStates: 16, 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 4 NumberOfFragments, 2 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 14.8s SatisfiabilityAnalysisTime, 577.3s InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 36 ConstructedInterpolants, 8 QuantifiedInterpolants, 1563 SizeOfPredicates, 15 NumberOfNonLiveVariables, 99 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-10-29 05:19:34,317 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3eb733a-2389-4f8f-8ee4-1ce2da12e72a/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2021-10-29 05:19:34,349 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3eb733a-2389-4f8f-8ee4-1ce2da12e72a/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 137 Received shutdown request...