./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 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17af86c9-039d-4303-802f-c92ea19574cd/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17af86c9-039d-4303-802f-c92ea19574cd/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17af86c9-039d-4303-802f-c92ea19574cd/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17af86c9-039d-4303-802f-c92ea19574cd/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/sqrt_poly.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17af86c9-039d-4303-802f-c92ea19574cd/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17af86c9-039d-4303-802f-c92ea19574cd/bin/utaipan-mTDlp9Zugs --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 e0c4d229f60f1a19f1b80be7acb6ce64e15b5c4a .................................................................................................................................................................................................................................................... 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_17af86c9-039d-4303-802f-c92ea19574cd/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17af86c9-039d-4303-802f-c92ea19574cd/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17af86c9-039d-4303-802f-c92ea19574cd/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17af86c9-039d-4303-802f-c92ea19574cd/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/sqrt_poly.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17af86c9-039d-4303-802f-c92ea19574cd/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17af86c9-039d-4303-802f-c92ea19574cd/bin/utaipan-mTDlp9Zugs --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 e0c4d229f60f1a19f1b80be7acb6ce64e15b5c4a ........................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-16 02:31:28,838 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:31:28,840 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:31:28,884 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:31:28,885 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:31:28,886 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:31:28,888 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:31:28,890 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:31:28,893 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:31:28,894 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:31:28,895 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:31:28,896 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:31:28,897 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:31:28,898 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:31:28,900 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:31:28,901 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:31:28,902 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:31:28,903 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:31:28,905 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:31:28,908 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:31:28,910 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:31:28,911 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:31:28,913 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:31:28,913 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:31:28,917 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:31:28,918 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:31:28,918 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:31:28,919 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:31:28,920 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:31:28,921 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:31:28,922 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:31:28,923 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:31:28,924 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:31:28,925 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:31:28,926 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:31:28,927 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:31:28,927 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:31:28,928 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:31:28,928 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:31:28,929 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:31:28,930 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:31:28,931 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17af86c9-039d-4303-802f-c92ea19574cd/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-16 02:31:28,953 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:31:28,954 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:31:28,954 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:31:28,955 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:31:28,955 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:31:28,955 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:31:28,955 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-16 02:31:28,956 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:31:28,956 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:31:28,956 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-16 02:31:28,956 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-16 02:31:28,956 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:31:28,957 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-16 02:31:28,957 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-16 02:31:28,957 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-16 02:31:28,958 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:31:28,958 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:31:28,958 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 02:31:28,959 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:31:28,959 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:31:28,959 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 02:31:28,959 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:31:28,959 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 02:31:28,960 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:31:28,960 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:31:28,960 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 02:31:28,960 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:31:28,960 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 02:31:28,961 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:31:28,961 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:31:28,961 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:31:28,961 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:31:28,962 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:31:28,962 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 02:31:28,962 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-16 02:31:28,962 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-16 02:31:28,963 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 02:31:28,963 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:31:28,963 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:31:28,963 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_17af86c9-039d-4303-802f-c92ea19574cd/bin/utaipan-mTDlp9Zugs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17af86c9-039d-4303-802f-c92ea19574cd/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e0c4d229f60f1a19f1b80be7acb6ce64e15b5c4a [2021-10-16 02:31:29,198 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:31:29,231 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:31:29,234 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:31:29,235 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:31:29,236 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:31:29,237 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17af86c9-039d-4303-802f-c92ea19574cd/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/float-benchs/sqrt_poly.c [2021-10-16 02:31:29,333 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17af86c9-039d-4303-802f-c92ea19574cd/bin/utaipan-mTDlp9Zugs/data/e7f3908c9/e0d899cb456c433ab1e75c4efb431b35/FLAGa4e5826f4 [2021-10-16 02:31:29,796 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:31:29,798 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17af86c9-039d-4303-802f-c92ea19574cd/sv-benchmarks/c/float-benchs/sqrt_poly.c [2021-10-16 02:31:29,804 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17af86c9-039d-4303-802f-c92ea19574cd/bin/utaipan-mTDlp9Zugs/data/e7f3908c9/e0d899cb456c433ab1e75c4efb431b35/FLAGa4e5826f4 [2021-10-16 02:31:30,175 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17af86c9-039d-4303-802f-c92ea19574cd/bin/utaipan-mTDlp9Zugs/data/e7f3908c9/e0d899cb456c433ab1e75c4efb431b35 [2021-10-16 02:31:30,178 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:31:30,180 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:31:30,183 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:31:30,183 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:31:30,186 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:31:30,188 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:31:30" (1/1) ... [2021-10-16 02:31:30,190 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38a71df7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:31:30, skipping insertion in model container [2021-10-16 02:31:30,190 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:31:30" (1/1) ... [2021-10-16 02:31:30,198 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:31:30,219 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:31:30,354 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_17af86c9-039d-4303-802f-c92ea19574cd/sv-benchmarks/c/float-benchs/sqrt_poly.c[671,684] [2021-10-16 02:31:30,366 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:31:30,375 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 02:31:30,387 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_17af86c9-039d-4303-802f-c92ea19574cd/sv-benchmarks/c/float-benchs/sqrt_poly.c[671,684] [2021-10-16 02:31:30,392 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:31:30,406 INFO L208 MainTranslator]: Completed translation [2021-10-16 02:31:30,406 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:31:30 WrapperNode [2021-10-16 02:31:30,406 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:31:30,408 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 02:31:30,408 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 02:31:30,408 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 02:31:30,416 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:31:30" (1/1) ... [2021-10-16 02:31:30,423 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:31:30" (1/1) ... [2021-10-16 02:31:30,441 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:31:30,442 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:31:30,442 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:31:30,442 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:31:30,450 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:31:30" (1/1) ... [2021-10-16 02:31:30,450 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:31:30" (1/1) ... [2021-10-16 02:31:30,452 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:31:30" (1/1) ... [2021-10-16 02:31:30,452 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:31:30" (1/1) ... [2021-10-16 02:31:30,457 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:31:30" (1/1) ... [2021-10-16 02:31:30,459 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:31:30" (1/1) ... [2021-10-16 02:31:30,460 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:31:30" (1/1) ... [2021-10-16 02:31:30,461 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:31:30,462 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:31:30,462 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:31:30,463 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:31:30,464 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:31:30" (1/1) ... [2021-10-16 02:31:30,471 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:31:30,486 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17af86c9-039d-4303-802f-c92ea19574cd/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:31:30,515 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17af86c9-039d-4303-802f-c92ea19574cd/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:31:30,544 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17af86c9-039d-4303-802f-c92ea19574cd/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:31:30,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-16 02:31:30,562 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 02:31:30,563 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:31:30,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:31:30,918 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:31:30,918 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-10-16 02:31:30,920 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:31:30 BoogieIcfgContainer [2021-10-16 02:31:30,920 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:31:30,922 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:31:30,923 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:31:30,932 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:31:30,933 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:31:30" (1/3) ... [2021-10-16 02:31:30,934 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f1fbe2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:31:30, skipping insertion in model container [2021-10-16 02:31:30,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:31:30" (2/3) ... [2021-10-16 02:31:30,934 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f1fbe2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:31:30, skipping insertion in model container [2021-10-16 02:31:30,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:31:30" (3/3) ... [2021-10-16 02:31:30,936 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt_poly.c [2021-10-16 02:31:30,941 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:31:30,941 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-16 02:31:31,045 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:31:31,052 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, mConcurrency=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 [2021-10-16 02:31:31,055 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-16 02:31:31,072 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) [2021-10-16 02:31:31,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-16 02:31:31,077 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:31:31,077 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-16 02:31:31,078 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:31:31,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:31:31,092 INFO L82 PathProgramCache]: Analyzing trace with hash 65926, now seen corresponding path program 1 times [2021-10-16 02:31:31,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:31:31,105 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042854688] [2021-10-16 02:31:31,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:31:31,110 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:31:31,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-16 02:31:31,210 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-16 02:31:31,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-16 02:31:31,254 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-16 02:31:31,256 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-16 02:31:31,257 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:31:31,260 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-16 02:31:31,266 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 02:31:31,284 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 02:31:31 BoogieIcfgContainer [2021-10-16 02:31:31,284 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 02:31:31,285 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 02:31:31,286 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 02:31:31,286 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 02:31:31,286 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:31:30" (3/4) ... [2021-10-16 02:31:31,289 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-16 02:31:31,290 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 02:31:31,292 INFO L168 Benchmark]: Toolchain (without parser) took 1110.97 ms. Allocated memory was 92.3 MB in the beginning and 125.8 MB in the end (delta: 33.6 MB). Free memory was 58.3 MB in the beginning and 83.3 MB in the end (delta: -25.0 MB). Peak memory consumption was 9.6 MB. Max. memory is 16.1 GB. [2021-10-16 02:31:31,293 INFO L168 Benchmark]: CDTParser took 0.80 ms. Allocated memory is still 92.3 MB. Free memory was 56.8 MB in the beginning and 56.8 MB in the end (delta: 57.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:31:31,294 INFO L168 Benchmark]: CACSL2BoogieTranslator took 223.66 ms. Allocated memory is still 92.3 MB. Free memory was 58.1 MB in the beginning and 48.4 MB in the end (delta: 9.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-16 02:31:31,295 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.26 ms. Allocated memory is still 92.3 MB. Free memory was 48.3 MB in the beginning and 46.9 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:31:31,295 INFO L168 Benchmark]: Boogie Preprocessor took 19.89 ms. Allocated memory is still 92.3 MB. Free memory was 46.9 MB in the beginning and 45.9 MB in the end (delta: 947.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:31:31,296 INFO L168 Benchmark]: RCFGBuilder took 458.43 ms. Allocated memory was 92.3 MB in the beginning and 125.8 MB in the end (delta: 33.6 MB). Free memory was 45.9 MB in the beginning and 97.4 MB in the end (delta: -51.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-16 02:31:31,297 INFO L168 Benchmark]: TraceAbstraction took 362.11 ms. Allocated memory is still 125.8 MB. Free memory was 96.9 MB in the beginning and 83.8 MB in the end (delta: 13.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-16 02:31:31,298 INFO L168 Benchmark]: Witness Printer took 4.55 ms. Allocated memory is still 125.8 MB. Free memory was 83.8 MB in the beginning and 83.3 MB in the end (delta: 545.8 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:31:31,302 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.80 ms. Allocated memory is still 92.3 MB. Free memory was 56.8 MB in the beginning and 56.8 MB in the end (delta: 57.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 223.66 ms. Allocated memory is still 92.3 MB. Free memory was 58.1 MB in the beginning and 48.4 MB in the end (delta: 9.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 33.26 ms. Allocated memory is still 92.3 MB. Free memory was 48.3 MB in the beginning and 46.9 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 19.89 ms. Allocated memory is still 92.3 MB. Free memory was 46.9 MB in the beginning and 45.9 MB in the end (delta: 947.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 458.43 ms. Allocated memory was 92.3 MB in the beginning and 125.8 MB in the end (delta: 33.6 MB). Free memory was 45.9 MB in the beginning and 97.4 MB in the end (delta: -51.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 362.11 ms. Allocated memory is still 125.8 MB. Free memory was 96.9 MB in the beginning and 83.8 MB in the end (delta: 13.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Witness Printer took 4.55 ms. Allocated memory is still 125.8 MB. Free memory was 83.8 MB in the beginning and 83.3 MB in the end (delta: 545.8 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, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms 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: 234.1ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 8.2ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 13.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms 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, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 6.3ms SsaConstructionTime, 45.0ms SatisfiabilityAnalysisTime, 0.0ms 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 [2021-10-16 02:31:31,363 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17af86c9-039d-4303-802f-c92ea19574cd/bin/utaipan-mTDlp9Zugs/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-5709675 [2021-10-16 02:31:33,782 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:31:33,784 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:31:33,815 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:31:33,816 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:31:33,817 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:31:33,819 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:31:33,821 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:31:33,823 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:31:33,824 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:31:33,825 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:31:33,827 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:31:33,827 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:31:33,828 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:31:33,830 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:31:33,831 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:31:33,832 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:31:33,833 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:31:33,835 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:31:33,838 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:31:33,839 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:31:33,841 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:31:33,842 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:31:33,843 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:31:33,847 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:31:33,847 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:31:33,848 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:31:33,849 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:31:33,849 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:31:33,850 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:31:33,851 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:31:33,852 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:31:33,853 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:31:33,854 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:31:33,861 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:31:33,861 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:31:33,862 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:31:33,863 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:31:33,863 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:31:33,864 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:31:33,865 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:31:33,869 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17af86c9-039d-4303-802f-c92ea19574cd/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-16 02:31:33,916 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:31:33,916 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:31:33,917 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:31:33,917 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:31:33,917 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:31:33,918 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:31:33,918 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:31:33,918 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:31:33,918 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:31:33,919 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:31:33,919 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:31:33,919 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:31:33,920 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:31:33,920 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 02:31:33,920 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:31:33,920 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 02:31:33,924 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:31:33,924 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-16 02:31:33,924 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-16 02:31:33,925 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:31:33,925 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 02:31:33,925 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:31:33,925 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 02:31:33,926 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:31:33,926 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-16 02:31:33,926 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:31:33,926 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:31:33,927 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:31:33,927 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:31:33,928 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 02:31:33,928 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-16 02:31:33,928 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-16 02:31:33,928 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 02:31:33,928 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:31:33,929 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:31:33,929 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_17af86c9-039d-4303-802f-c92ea19574cd/bin/utaipan-mTDlp9Zugs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17af86c9-039d-4303-802f-c92ea19574cd/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e0c4d229f60f1a19f1b80be7acb6ce64e15b5c4a [2021-10-16 02:31:34,348 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:31:34,376 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:31:34,379 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:31:34,380 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:31:34,381 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:31:34,384 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17af86c9-039d-4303-802f-c92ea19574cd/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/float-benchs/sqrt_poly.c [2021-10-16 02:31:34,461 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17af86c9-039d-4303-802f-c92ea19574cd/bin/utaipan-mTDlp9Zugs/data/0fb5f9f02/be47b68af5bb434ab43ebc9368b271f3/FLAG1219a1b11 [2021-10-16 02:31:34,916 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:31:34,917 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17af86c9-039d-4303-802f-c92ea19574cd/sv-benchmarks/c/float-benchs/sqrt_poly.c [2021-10-16 02:31:34,923 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17af86c9-039d-4303-802f-c92ea19574cd/bin/utaipan-mTDlp9Zugs/data/0fb5f9f02/be47b68af5bb434ab43ebc9368b271f3/FLAG1219a1b11 [2021-10-16 02:31:35,306 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17af86c9-039d-4303-802f-c92ea19574cd/bin/utaipan-mTDlp9Zugs/data/0fb5f9f02/be47b68af5bb434ab43ebc9368b271f3 [2021-10-16 02:31:35,308 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:31:35,310 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:31:35,311 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:31:35,311 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:31:35,315 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:31:35,316 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:31:35" (1/1) ... [2021-10-16 02:31:35,317 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c3dc93e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:31:35, skipping insertion in model container [2021-10-16 02:31:35,317 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:31:35" (1/1) ... [2021-10-16 02:31:35,324 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:31:35,337 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:31:35,467 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_17af86c9-039d-4303-802f-c92ea19574cd/sv-benchmarks/c/float-benchs/sqrt_poly.c[671,684] [2021-10-16 02:31:35,479 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:31:35,493 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 02:31:35,538 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_17af86c9-039d-4303-802f-c92ea19574cd/sv-benchmarks/c/float-benchs/sqrt_poly.c[671,684] [2021-10-16 02:31:35,550 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:31:35,569 INFO L208 MainTranslator]: Completed translation [2021-10-16 02:31:35,569 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:31:35 WrapperNode [2021-10-16 02:31:35,569 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:31:35,571 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 02:31:35,571 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 02:31:35,571 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 02:31:35,578 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:31:35" (1/1) ... [2021-10-16 02:31:35,587 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:31:35" (1/1) ... [2021-10-16 02:31:35,605 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:31:35,606 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:31:35,606 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:31:35,606 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:31:35,614 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:31:35" (1/1) ... [2021-10-16 02:31:35,614 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:31:35" (1/1) ... [2021-10-16 02:31:35,617 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:31:35" (1/1) ... [2021-10-16 02:31:35,618 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:31:35" (1/1) ... [2021-10-16 02:31:35,624 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:31:35" (1/1) ... [2021-10-16 02:31:35,626 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:31:35" (1/1) ... [2021-10-16 02:31:35,628 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:31:35" (1/1) ... [2021-10-16 02:31:35,631 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:31:35,632 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:31:35,632 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:31:35,632 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:31:35,633 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:31:35" (1/1) ... [2021-10-16 02:31:35,639 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:31:35,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17af86c9-039d-4303-802f-c92ea19574cd/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:31:35,666 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17af86c9-039d-4303-802f-c92ea19574cd/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:31:35,670 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17af86c9-039d-4303-802f-c92ea19574cd/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:31:35,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-16 02:31:35,713 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 02:31:35,713 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:31:35,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:31:40,231 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:31:40,231 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-10-16 02:31:40,234 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:31:40 BoogieIcfgContainer [2021-10-16 02:31:40,234 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:31:40,236 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:31:40,236 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:31:40,240 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:31:40,240 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:31:35" (1/3) ... [2021-10-16 02:31:40,241 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f2bebe2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:31:40, skipping insertion in model container [2021-10-16 02:31:40,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:31:35" (2/3) ... [2021-10-16 02:31:40,242 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f2bebe2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:31:40, skipping insertion in model container [2021-10-16 02:31:40,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:31:40" (3/3) ... [2021-10-16 02:31:40,244 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt_poly.c [2021-10-16 02:31:40,250 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:31:40,250 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-16 02:31:40,297 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:31:40,304 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, mConcurrency=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 [2021-10-16 02:31:40,304 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-16 02:31:40,317 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) [2021-10-16 02:31:40,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-16 02:31:40,322 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:31:40,323 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:31:40,323 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:31:40,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:31:40,329 INFO L82 PathProgramCache]: Analyzing trace with hash 1805028936, now seen corresponding path program 1 times [2021-10-16 02:31:40,340 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:31:40,341 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [615837289] [2021-10-16 02:31:40,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:31:40,342 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:31:40,342 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17af86c9-039d-4303-802f-c92ea19574cd/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:31:40,346 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17af86c9-039d-4303-802f-c92ea19574cd/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:31:40,347 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17af86c9-039d-4303-802f-c92ea19574cd/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-16 02:31:41,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:31:41,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-16 02:31:41,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:31:41,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:31:41,162 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:31:41,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:31:41,209 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:31:41,209 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [615837289] [2021-10-16 02:31:41,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [615837289] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:31:41,210 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:31:41,210 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-16 02:31:41,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126823109] [2021-10-16 02:31:41,217 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-16 02:31:41,218 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:31:41,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-16 02:31:41,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 02:31:41,233 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) [2021-10-16 02:31:41,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:31:41,246 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2021-10-16 02:31:41,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-16 02:31:41,248 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 [2021-10-16 02:31:41,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:31:41,255 INFO L225 Difference]: With dead ends: 21 [2021-10-16 02:31:41,256 INFO L226 Difference]: Without dead ends: 8 [2021-10-16 02:31:41,258 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 02:31:41,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2021-10-16 02:31:41,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2021-10-16 02:31:41,284 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) [2021-10-16 02:31:41,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2021-10-16 02:31:41,285 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 7 [2021-10-16 02:31:41,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:31:41,286 INFO L470 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2021-10-16 02:31:41,286 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) [2021-10-16 02:31:41,287 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2021-10-16 02:31:41,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-16 02:31:41,287 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:31:41,287 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:31:41,321 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17af86c9-039d-4303-802f-c92ea19574cd/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-16 02:31:41,510 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17af86c9-039d-4303-802f-c92ea19574cd/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:31:41,510 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:31:41,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:31:41,511 INFO L82 PathProgramCache]: Analyzing trace with hash 1806875978, now seen corresponding path program 1 times [2021-10-16 02:31:41,512 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:31:41,512 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [750580189] [2021-10-16 02:31:41,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:31:41,515 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:31:41,515 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17af86c9-039d-4303-802f-c92ea19574cd/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:31:41,516 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17af86c9-039d-4303-802f-c92ea19574cd/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:31:41,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17af86c9-039d-4303-802f-c92ea19574cd/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-16 02:31:43,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:31:43,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-16 02:31:43,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:31:59,603 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 [2021-10-16 02:33:46,127 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 [2021-10-16 02:33:48,198 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 [2021-10-16 02:34:40,031 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 [2021-10-16 02:34:42,103 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 [2021-10-16 02:34:42,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:34:42,104 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:34:57,969 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 [2021-10-16 02:35:00,098 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 [2021-10-16 02:35:20,368 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 [2021-10-16 02:35:22,506 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 [2021-10-16 02:36:16,069 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 [2021-10-16 02:36:18,233 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 [2021-10-16 02:36:18,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:36:18,234 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:36:18,234 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [750580189] [2021-10-16 02:36:18,234 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [750580189] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:36:18,235 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:36:18,235 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 12 [2021-10-16 02:36:18,235 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370407274] [2021-10-16 02:36:18,236 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-16 02:36:18,237 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:36:18,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-16 02:36:18,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=30, Unknown=11, NotChecked=90, Total=156 [2021-10-16 02:36:18,244 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) [2021-10-16 02:36:20,373 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 [2021-10-16 02:36:22,514 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 [2021-10-16 02:36:24,629 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 [2021-10-16 02:36:26,756 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 [2021-10-16 02:36:28,876 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 [2021-10-16 02:36:31,010 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 [2021-10-16 02:36:33,127 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 [2021-10-16 02:36:35,257 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 [2021-10-16 02:36:35,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:36:35,319 INFO L93 Difference]: Finished difference Result 12 states and 11 transitions. [2021-10-16 02:36:35,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-16 02:36:35,320 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 [2021-10-16 02:36:35,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:36:35,320 INFO L225 Difference]: With dead ends: 12 [2021-10-16 02:36:35,321 INFO L226 Difference]: Without dead ends: 8 [2021-10-16 02:36:35,322 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 11 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 40773.5ms TimeCoverageRelationStatistics Valid=35, Invalid=32, Unknown=19, NotChecked=220, Total=306 [2021-10-16 02:36:35,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2021-10-16 02:36:35,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2021-10-16 02:36:35,323 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) [2021-10-16 02:36:35,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 7 transitions. [2021-10-16 02:36:35,323 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 7 transitions. Word has length 7 [2021-10-16 02:36:35,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:36:35,324 INFO L470 AbstractCegarLoop]: Abstraction has 8 states and 7 transitions. [2021-10-16 02:36:35,324 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) [2021-10-16 02:36:35,324 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 7 transitions. [2021-10-16 02:36:35,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-16 02:36:35,324 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:36:35,325 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:36:35,354 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17af86c9-039d-4303-802f-c92ea19574cd/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-16 02:36:35,541 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17af86c9-039d-4303-802f-c92ea19574cd/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:36:35,541 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:36:35,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:36:35,542 INFO L82 PathProgramCache]: Analyzing trace with hash 1806935560, now seen corresponding path program 1 times [2021-10-16 02:36:35,542 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:36:35,542 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [715900075] [2021-10-16 02:36:35,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:36:35,543 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:36:35,543 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17af86c9-039d-4303-802f-c92ea19574cd/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:36:35,544 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17af86c9-039d-4303-802f-c92ea19574cd/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:36:35,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17af86c9-039d-4303-802f-c92ea19574cd/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-16 02:36:46,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:36:47,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-16 02:36:47,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:37:03,475 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 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)))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-10-16 02:38:51,160 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 [2021-10-16 02:38:53,242 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 [2021-10-16 02:39:45,818 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 [2021-10-16 02:39:47,896 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 [2021-10-16 02:39:47,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:39:47,897 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:40:03,643 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 [2021-10-16 02:40:05,779 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 [2021-10-16 02:40:25,629 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 [2021-10-16 02:40:27,764 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 [2021-10-16 02:41:21,186 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 [2021-10-16 02:41:23,325 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 [2021-10-16 02:41:23,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:41:23,326 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:41:23,327 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [715900075] [2021-10-16 02:41:23,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [715900075] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:41:23,327 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:41:23,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 12 [2021-10-16 02:41:23,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877896485] [2021-10-16 02:41:23,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-16 02:41:23,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:41:23,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-16 02:41:23,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=30, Unknown=11, NotChecked=90, Total=156 [2021-10-16 02:41:23,330 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) [2021-10-16 02:41:25,454 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 [2021-10-16 02:41:27,574 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 [2021-10-16 02:41:29,720 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 [2021-10-16 02:41:31,865 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 [2021-10-16 02:41:34,014 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 [2021-10-16 02:41:36,158 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 [2021-10-16 02:41:38,320 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 [2021-10-16 02:41:40,491 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 [2021-10-16 02:41:40,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:41:40,504 INFO L93 Difference]: Finished difference Result 8 states and 7 transitions. [2021-10-16 02:41:40,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-16 02:41:40,505 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 [2021-10-16 02:41:40,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:41:40,505 INFO L225 Difference]: With dead ends: 8 [2021-10-16 02:41:40,505 INFO L226 Difference]: Without dead ends: 0 [2021-10-16 02:41:40,506 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 11 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 41106.0ms TimeCoverageRelationStatistics Valid=35, Invalid=32, Unknown=19, NotChecked=220, Total=306 [2021-10-16 02:41:40,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-16 02:41:40,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-16 02:41:40,506 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) [2021-10-16 02:41:40,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-16 02:41:40,506 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2021-10-16 02:41:40,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:41:40,507 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-16 02:41:40,507 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) [2021-10-16 02:41:40,507 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-16 02:41:40,507 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-16 02:41:40,510 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:41:40,534 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17af86c9-039d-4303-802f-c92ea19574cd/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-10-16 02:41:40,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17af86c9-039d-4303-802f-c92ea19574cd/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:41:40,713 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-16 02:41:40,718 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:41:40,747 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:41:40,752 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-16 02:41:40,752 INFO L860 garLoopResultBuilder]: At program point L31(lines 20 32) the Hoare annotation is: true [2021-10-16 02:41:40,752 INFO L857 garLoopResultBuilder]: For program point L27-1(lines 27 28) no Hoare annotation was computed. [2021-10-16 02:41:40,753 INFO L857 garLoopResultBuilder]: For program point L13(lines 27 28) no Hoare annotation was computed. [2021-10-16 02:41:40,753 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-16 02:41:40,753 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-16 02:41:40,753 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-16 02:41:40,753 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2021-10-16 02:41:40,754 INFO L857 garLoopResultBuilder]: For program point L16(line 16) no Hoare annotation was computed. [2021-10-16 02:41:40,754 INFO L857 garLoopResultBuilder]: For program point L16-1(line 16) no Hoare annotation was computed. [2021-10-16 02:41:40,754 INFO L857 garLoopResultBuilder]: For program point L14(line 14) no Hoare annotation was computed. [2021-10-16 02:41:40,754 INFO L860 garLoopResultBuilder]: At program point L16-3(line 16) the Hoare annotation is: true [2021-10-16 02:41:40,759 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 02:41:40,766 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 02:41:40 BoogieIcfgContainer [2021-10-16 02:41:40,766 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 02:41:40,767 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 02:41:40,768 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 02:41:40,768 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 02:41:40,769 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:31:40" (3/4) ... [2021-10-16 02:41:40,772 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-16 02:41:40,783 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2021-10-16 02:41:40,783 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-10-16 02:41:40,784 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-16 02:41:40,784 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-16 02:41:40,821 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17af86c9-039d-4303-802f-c92ea19574cd/bin/utaipan-mTDlp9Zugs/witness.graphml [2021-10-16 02:41:40,821 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 02:41:40,823 INFO L168 Benchmark]: Toolchain (without parser) took 605512.03 ms. Allocated memory was 62.9 MB in the beginning and 75.5 MB in the end (delta: 12.6 MB). Free memory was 44.5 MB in the beginning and 34.3 MB in the end (delta: 10.2 MB). Peak memory consumption was 22.4 MB. Max. memory is 16.1 GB. [2021-10-16 02:41:40,824 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 62.9 MB. Free memory was 43.1 MB in the beginning and 43.1 MB in the end (delta: 54.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:41:40,824 INFO L168 Benchmark]: CACSL2BoogieTranslator took 258.67 ms. Allocated memory is still 62.9 MB. Free memory was 44.2 MB in the beginning and 45.6 MB in the end (delta: -1.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-16 02:41:40,825 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.44 ms. Allocated memory is still 62.9 MB. Free memory was 45.6 MB in the beginning and 44.0 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:41:40,826 INFO L168 Benchmark]: Boogie Preprocessor took 25.37 ms. Allocated memory is still 62.9 MB. Free memory was 44.0 MB in the beginning and 42.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:41:40,826 INFO L168 Benchmark]: RCFGBuilder took 4602.60 ms. Allocated memory is still 62.9 MB. Free memory was 42.7 MB in the beginning and 33.1 MB in the end (delta: 9.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-16 02:41:40,827 INFO L168 Benchmark]: TraceAbstraction took 600530.47 ms. Allocated memory was 62.9 MB in the beginning and 75.5 MB in the end (delta: 12.6 MB). Free memory was 32.7 MB in the beginning and 36.7 MB in the end (delta: -4.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 16.1 GB. [2021-10-16 02:41:40,828 INFO L168 Benchmark]: Witness Printer took 53.89 ms. Allocated memory is still 75.5 MB. Free memory was 36.7 MB in the beginning and 34.3 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:41:40,831 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 62.9 MB. Free memory was 43.1 MB in the beginning and 43.1 MB in the end (delta: 54.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 258.67 ms. Allocated memory is still 62.9 MB. Free memory was 44.2 MB in the beginning and 45.6 MB in the end (delta: -1.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 34.44 ms. Allocated memory is still 62.9 MB. Free memory was 45.6 MB in the beginning and 44.0 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 25.37 ms. Allocated memory is still 62.9 MB. Free memory was 44.0 MB in the beginning and 42.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 4602.60 ms. Allocated memory is still 62.9 MB. Free memory was 42.7 MB in the beginning and 33.1 MB in the end (delta: 9.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 600530.47 ms. Allocated memory was 62.9 MB in the beginning and 75.5 MB in the end (delta: 12.6 MB). Free memory was 32.7 MB in the beginning and 36.7 MB in the end (delta: -4.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 16.1 GB. * Witness Printer took 53.89 ms. Allocated memory is still 75.5 MB. Free memory was 36.7 MB in the beginning and 34.3 MB in the end (delta: 2.4 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, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms 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: 600463.9ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 9.9ms, AutomataDifference: 34301.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 39.5ms, InitialAbstractionConstructionTime: 8.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 17 SDtfs, 0 SDslu, 11 SDs, 0 SdLazy, 11 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 117.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 46 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 22 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 81879.6ms Time, 0.0ms 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, 0.0ms DumpTime, AutomataMinimizationStatistics: 15.9ms AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 4 NumberOfFragments, 2 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 32.4ms HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 1.4ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 30.9ms SsaConstructionTime, 13614.0ms SatisfiabilityAnalysisTime, 551602.0ms 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! [2021-10-16 02:41:41,073 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17af86c9-039d-4303-802f-c92ea19574cd/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2021-10-16 02:41:41,113 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17af86c9-039d-4303-802f-c92ea19574cd/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 137 Received shutdown request...