./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/interpolation.c.v+nlh-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2736e90a-3e8c-4381-8911-369fb52314f3/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2736e90a-3e8c-4381-8911-369fb52314f3/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2736e90a-3e8c-4381-8911-369fb52314f3/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2736e90a-3e8c-4381-8911-369fb52314f3/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/interpolation.c.v+nlh-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2736e90a-3e8c-4381-8911-369fb52314f3/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2736e90a-3e8c-4381-8911-369fb52314f3/bin/utaipan-aC7eJsxGYH --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 3507c00d68b8e41390815967879286d70904cb2355267878593fbddaafb4b556 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 05:32:40,651 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 05:32:40,653 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 05:32:40,708 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 05:32:40,708 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 05:32:40,713 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 05:32:40,715 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 05:32:40,719 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 05:32:40,721 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 05:32:40,729 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 05:32:40,730 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 05:32:40,731 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 05:32:40,731 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 05:32:40,732 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 05:32:40,734 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 05:32:40,735 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 05:32:40,736 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 05:32:40,737 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 05:32:40,739 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 05:32:40,746 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 05:32:40,749 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 05:32:40,751 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 05:32:40,757 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 05:32:40,758 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 05:32:40,764 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 05:32:40,765 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 05:32:40,765 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 05:32:40,767 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 05:32:40,768 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 05:32:40,769 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 05:32:40,769 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 05:32:40,770 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 05:32:40,772 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 05:32:40,773 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 05:32:40,774 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 05:32:40,775 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 05:32:40,775 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 05:32:40,776 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 05:32:40,776 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 05:32:40,777 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 05:32:40,777 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 05:32:40,778 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2736e90a-3e8c-4381-8911-369fb52314f3/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-03 05:32:40,824 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 05:32:40,825 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 05:32:40,826 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 05:32:40,826 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 05:32:40,827 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 05:32:40,827 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 05:32:40,827 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 05:32:40,827 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 05:32:40,827 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 05:32:40,828 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 05:32:40,829 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 05:32:40,829 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 05:32:40,829 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 05:32:40,829 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 05:32:40,830 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 05:32:40,830 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 05:32:40,831 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 05:32:40,831 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 05:32:40,831 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 05:32:40,831 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 05:32:40,831 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 05:32:40,832 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 05:32:40,832 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 05:32:40,832 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 05:32:40,832 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 05:32:40,832 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 05:32:40,833 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 05:32:40,833 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 05:32:40,833 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 05:32:40,834 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 05:32:40,835 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:32:40,835 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 05:32:40,835 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 05:32:40,835 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 05:32:40,836 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 05:32:40,836 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 05:32:40,836 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 05:32:40,836 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 05:32:40,836 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 05:32:40,837 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_2736e90a-3e8c-4381-8911-369fb52314f3/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2736e90a-3e8c-4381-8911-369fb52314f3/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3507c00d68b8e41390815967879286d70904cb2355267878593fbddaafb4b556 [2021-11-03 05:32:41,143 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 05:32:41,168 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 05:32:41,170 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 05:32:41,172 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 05:32:41,172 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 05:32:41,173 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2736e90a-3e8c-4381-8911-369fb52314f3/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/float-benchs/interpolation.c.v+nlh-reducer.c [2021-11-03 05:32:41,251 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2736e90a-3e8c-4381-8911-369fb52314f3/bin/utaipan-aC7eJsxGYH/data/c07a1238e/09865a15149c44069739fb7ad0e710b5/FLAG49bfd7f56 [2021-11-03 05:32:41,757 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 05:32:41,757 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2736e90a-3e8c-4381-8911-369fb52314f3/sv-benchmarks/c/float-benchs/interpolation.c.v+nlh-reducer.c [2021-11-03 05:32:41,767 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2736e90a-3e8c-4381-8911-369fb52314f3/bin/utaipan-aC7eJsxGYH/data/c07a1238e/09865a15149c44069739fb7ad0e710b5/FLAG49bfd7f56 [2021-11-03 05:32:42,127 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2736e90a-3e8c-4381-8911-369fb52314f3/bin/utaipan-aC7eJsxGYH/data/c07a1238e/09865a15149c44069739fb7ad0e710b5 [2021-11-03 05:32:42,129 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 05:32:42,130 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 05:32:42,132 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 05:32:42,132 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 05:32:42,148 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 05:32:42,149 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:32:42" (1/1) ... [2021-11-03 05:32:42,150 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a39ba55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:32:42, skipping insertion in model container [2021-11-03 05:32:42,150 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:32:42" (1/1) ... [2021-11-03 05:32:42,157 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 05:32:42,174 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 05:32:42,378 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_2736e90a-3e8c-4381-8911-369fb52314f3/sv-benchmarks/c/float-benchs/interpolation.c.v+nlh-reducer.c[1314,1327] [2021-11-03 05:32:42,388 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:32:42,397 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 05:32:42,422 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_2736e90a-3e8c-4381-8911-369fb52314f3/sv-benchmarks/c/float-benchs/interpolation.c.v+nlh-reducer.c[1314,1327] [2021-11-03 05:32:42,428 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:32:42,442 INFO L208 MainTranslator]: Completed translation [2021-11-03 05:32:42,444 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:32:42 WrapperNode [2021-11-03 05:32:42,444 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 05:32:42,446 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 05:32:42,446 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 05:32:42,446 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 05:32:42,454 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:32:42" (1/1) ... [2021-11-03 05:32:42,472 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:32:42" (1/1) ... [2021-11-03 05:32:42,507 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 05:32:42,508 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 05:32:42,509 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 05:32:42,509 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 05:32:42,517 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:32:42" (1/1) ... [2021-11-03 05:32:42,517 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:32:42" (1/1) ... [2021-11-03 05:32:42,533 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:32:42" (1/1) ... [2021-11-03 05:32:42,534 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:32:42" (1/1) ... [2021-11-03 05:32:42,542 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:32:42" (1/1) ... [2021-11-03 05:32:42,549 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:32:42" (1/1) ... [2021-11-03 05:32:42,551 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:32:42" (1/1) ... [2021-11-03 05:32:42,553 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 05:32:42,554 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 05:32:42,554 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 05:32:42,554 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 05:32:42,555 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:32:42" (1/1) ... [2021-11-03 05:32:42,565 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:32:42,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2736e90a-3e8c-4381-8911-369fb52314f3/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:32:42,591 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2736e90a-3e8c-4381-8911-369fb52314f3/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 05:32:42,609 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2736e90a-3e8c-4381-8911-369fb52314f3/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 05:32:42,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-03 05:32:42,642 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 05:32:42,642 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-11-03 05:32:42,642 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 05:32:42,643 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 05:32:42,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2021-11-03 05:32:42,643 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 05:32:43,048 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 05:32:43,048 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-03 05:32:43,051 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:32:43 BoogieIcfgContainer [2021-11-03 05:32:43,051 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 05:32:43,053 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 05:32:43,053 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 05:32:43,057 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 05:32:43,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 05:32:42" (1/3) ... [2021-11-03 05:32:43,058 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74f46dd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:32:43, skipping insertion in model container [2021-11-03 05:32:43,058 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:32:42" (2/3) ... [2021-11-03 05:32:43,058 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74f46dd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:32:43, skipping insertion in model container [2021-11-03 05:32:43,059 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:32:43" (3/3) ... [2021-11-03 05:32:43,060 INFO L111 eAbstractionObserver]: Analyzing ICFG interpolation.c.v+nlh-reducer.c [2021-11-03 05:32:43,065 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 05:32:43,066 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-03 05:32:43,109 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 05:32:43,115 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-03 05:32:43,115 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-03 05:32:43,129 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 22 states have internal predecessors, (36), 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) [2021-11-03 05:32:43,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-03 05:32:43,133 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:32:43,134 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:32:43,134 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:32:43,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:32:43,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1054039300, now seen corresponding path program 1 times [2021-11-03 05:32:43,149 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:32:43,150 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257570334] [2021-11-03 05:32:43,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:32:43,151 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:32:43,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:32:43,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:32:43,408 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:32:43,408 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257570334] [2021-11-03 05:32:43,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257570334] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:32:43,409 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:32:43,409 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-03 05:32:43,411 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160892046] [2021-11-03 05:32:43,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 05:32:43,416 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:32:43,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 05:32:43,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 05:32:43,436 INFO L87 Difference]: Start difference. First operand has 23 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 22 states have internal predecessors, (36), 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 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 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) [2021-11-03 05:32:43,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:32:43,498 INFO L93 Difference]: Finished difference Result 35 states and 45 transitions. [2021-11-03 05:32:43,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 05:32:43,500 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 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 12 [2021-11-03 05:32:43,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:32:43,508 INFO L225 Difference]: With dead ends: 35 [2021-11-03 05:32:43,509 INFO L226 Difference]: Without dead ends: 21 [2021-11-03 05:32:43,511 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:32:43,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-11-03 05:32:43,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2021-11-03 05:32:43,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.3) internal successors, (26), 20 states have internal predecessors, (26), 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) [2021-11-03 05:32:43,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 26 transitions. [2021-11-03 05:32:43,542 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 26 transitions. Word has length 12 [2021-11-03 05:32:43,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:32:43,542 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 26 transitions. [2021-11-03 05:32:43,543 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 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) [2021-11-03 05:32:43,543 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 26 transitions. [2021-11-03 05:32:43,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-03 05:32:43,544 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:32:43,544 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:32:43,544 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-03 05:32:43,545 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:32:43,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:32:43,570 INFO L85 PathProgramCache]: Analyzing trace with hash -1037028639, now seen corresponding path program 1 times [2021-11-03 05:32:43,570 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:32:43,571 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991256236] [2021-11-03 05:32:43,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:32:43,572 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:32:43,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-03 05:32:43,606 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-03 05:32:43,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-03 05:32:43,651 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-03 05:32:43,651 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-11-03 05:32:43,653 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 05:32:43,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-03 05:32:43,659 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-03 05:32:43,661 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-03 05:32:43,690 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 05:32:43 BoogieIcfgContainer [2021-11-03 05:32:43,690 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-03 05:32:43,691 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-03 05:32:43,691 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-03 05:32:43,691 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-03 05:32:43,692 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:32:43" (3/4) ... [2021-11-03 05:32:43,695 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-03 05:32:43,695 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-03 05:32:43,697 INFO L168 Benchmark]: Toolchain (without parser) took 1565.66 ms. Allocated memory is still 107.0 MB. Free memory was 70.2 MB in the beginning and 78.3 MB in the end (delta: -8.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 05:32:43,698 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 107.0 MB. Free memory is still 86.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 05:32:43,698 INFO L168 Benchmark]: CACSL2BoogieTranslator took 312.66 ms. Allocated memory is still 107.0 MB. Free memory was 70.0 MB in the beginning and 82.1 MB in the end (delta: -12.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-03 05:32:43,699 INFO L168 Benchmark]: Boogie Procedure Inliner took 61.52 ms. Allocated memory is still 107.0 MB. Free memory was 82.1 MB in the beginning and 80.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-03 05:32:43,700 INFO L168 Benchmark]: Boogie Preprocessor took 44.46 ms. Allocated memory is still 107.0 MB. Free memory was 80.0 MB in the beginning and 78.8 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 05:32:43,700 INFO L168 Benchmark]: RCFGBuilder took 497.86 ms. Allocated memory is still 107.0 MB. Free memory was 78.8 MB in the beginning and 65.8 MB in the end (delta: 13.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-11-03 05:32:43,701 INFO L168 Benchmark]: TraceAbstraction took 637.34 ms. Allocated memory is still 107.0 MB. Free memory was 64.9 MB in the beginning and 78.7 MB in the end (delta: -13.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 05:32:43,702 INFO L168 Benchmark]: Witness Printer took 4.39 ms. Allocated memory is still 107.0 MB. Free memory was 78.7 MB in the beginning and 78.3 MB in the end (delta: 402.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 05:32:43,705 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 107.0 MB. Free memory is still 86.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 312.66 ms. Allocated memory is still 107.0 MB. Free memory was 70.0 MB in the beginning and 82.1 MB in the end (delta: -12.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 61.52 ms. Allocated memory is still 107.0 MB. Free memory was 82.1 MB in the beginning and 80.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 44.46 ms. Allocated memory is still 107.0 MB. Free memory was 80.0 MB in the beginning and 78.8 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 497.86 ms. Allocated memory is still 107.0 MB. Free memory was 78.8 MB in the beginning and 65.8 MB in the end (delta: 13.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 637.34 ms. Allocated memory is still 107.0 MB. Free memory was 64.9 MB in the beginning and 78.7 MB in the end (delta: -13.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 4.39 ms. Allocated memory is still 107.0 MB. Free memory was 78.7 MB in the beginning and 78.3 MB in the end (delta: 402.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 51]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 32, overapproximation of someBinaryDOUBLEComparisonOperation at line 38, overapproximation of to_real at line 18, overapproximation of someBinaryArithmeticFLOAToperation at line 36. Possible FailurePath: [L1] int __return_main; [L12] int __return_132; [L15] int main__i; [L16] float main__z; [L17] float main__t; [L18] float main__min[5] = { 5, 10, 12, 30, 150 }; [L19] float main__max[5] = { 10, 12, 30, 150, 300 }; [L20] main__t = __VERIFIER_nondet_float() [L21] int main____CPAchecker_TMP_0; [L22] EXPR main__min[0] VAL [__return_132=0, __return_main=0] [L22] COND TRUE main__t >= (main__min[0]) [L24] EXPR main__max[4UL] VAL [__return_132=0, __return_main=0] [L24] COND TRUE main__t <= (main__max[4UL]) [L26] main____CPAchecker_TMP_0 = 1 VAL [__return_132=0, __return_main=0] [L27] COND TRUE main____CPAchecker_TMP_0 != 0 [L29] main__i = 0 VAL [__return_132=0, __return_main=0] [L30] COND TRUE main__i < 5UL [L32] EXPR main__max[main__i] VAL [__return_132=0, __return_main=0] [L32] COND TRUE main__t <= (main__max[main__i]) [L36] EXPR main__min[main__i] [L36] EXPR main__max[main__i] [L36] EXPR main__min[main__i] [L36] main__z = (main__t - (main__min[main__i])) / ((main__max[main__i]) - (main__min[main__i])) [L37] int main____CPAchecker_TMP_1; VAL [__return_132=0, __return_main=0] [L38] COND FALSE !(main__z >= 0.0) VAL [__return_132=0, __return_main=0] [L64] main____CPAchecker_TMP_1 = 0 VAL [__return_132=0, __return_main=0] [L45] int __tmp_1; [L46] __tmp_1 = main____CPAchecker_TMP_1 [L47] int __VERIFIER_assert__cond; [L48] __VERIFIER_assert__cond = __tmp_1 VAL [__return_132=0, __return_main=0] [L49] COND TRUE __VERIFIER_assert__cond == 0 VAL [__return_132=0, __return_main=0] [L51] reach_error() VAL [__return_132=0, __return_main=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 33 SDtfs, 37 SDslu, 64 SDs, 0 SdLazy, 13 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=0, InterpolantAutomatonStates: 6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 11 ConstructedInterpolants, 0 QuantifiedInterpolants, 19 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-03 05:32:43,746 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2736e90a-3e8c-4381-8911-369fb52314f3/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2736e90a-3e8c-4381-8911-369fb52314f3/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2736e90a-3e8c-4381-8911-369fb52314f3/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2736e90a-3e8c-4381-8911-369fb52314f3/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2736e90a-3e8c-4381-8911-369fb52314f3/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/interpolation.c.v+nlh-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2736e90a-3e8c-4381-8911-369fb52314f3/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2736e90a-3e8c-4381-8911-369fb52314f3/bin/utaipan-aC7eJsxGYH --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 3507c00d68b8e41390815967879286d70904cb2355267878593fbddaafb4b556 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 05:32:46,148 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 05:32:46,152 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 05:32:46,201 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 05:32:46,202 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 05:32:46,205 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 05:32:46,208 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 05:32:46,212 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 05:32:46,215 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 05:32:46,222 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 05:32:46,224 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 05:32:46,225 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 05:32:46,226 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 05:32:46,228 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 05:32:46,230 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 05:32:46,234 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 05:32:46,235 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 05:32:46,236 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 05:32:46,238 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 05:32:46,245 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 05:32:46,247 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 05:32:46,248 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 05:32:46,251 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 05:32:46,253 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 05:32:46,261 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 05:32:46,262 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 05:32:46,262 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 05:32:46,264 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 05:32:46,264 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 05:32:46,265 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 05:32:46,266 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 05:32:46,267 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 05:32:46,269 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 05:32:46,269 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 05:32:46,271 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 05:32:46,271 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 05:32:46,272 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 05:32:46,272 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 05:32:46,272 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 05:32:46,274 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 05:32:46,275 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 05:32:46,276 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2736e90a-3e8c-4381-8911-369fb52314f3/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-03 05:32:46,317 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 05:32:46,317 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 05:32:46,319 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 05:32:46,319 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 05:32:46,319 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 05:32:46,319 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 05:32:46,320 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 05:32:46,320 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 05:32:46,320 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 05:32:46,322 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 05:32:46,323 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 05:32:46,323 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 05:32:46,323 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 05:32:46,323 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 05:32:46,323 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 05:32:46,324 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 05:32:46,324 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 05:32:46,324 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 05:32:46,324 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 05:32:46,324 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 05:32:46,325 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 05:32:46,325 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 05:32:46,325 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 05:32:46,325 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 05:32:46,325 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 05:32:46,326 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 05:32:46,326 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:32:46,326 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 05:32:46,326 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 05:32:46,326 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 05:32:46,327 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 05:32:46,327 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 05:32:46,327 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 05:32:46,327 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 05:32:46,328 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 05:32:46,328 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_2736e90a-3e8c-4381-8911-369fb52314f3/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2736e90a-3e8c-4381-8911-369fb52314f3/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3507c00d68b8e41390815967879286d70904cb2355267878593fbddaafb4b556 [2021-11-03 05:32:46,675 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 05:32:46,697 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 05:32:46,700 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 05:32:46,702 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 05:32:46,708 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 05:32:46,709 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2736e90a-3e8c-4381-8911-369fb52314f3/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/float-benchs/interpolation.c.v+nlh-reducer.c [2021-11-03 05:32:46,788 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2736e90a-3e8c-4381-8911-369fb52314f3/bin/utaipan-aC7eJsxGYH/data/6705980ed/cfa225ce53774821941f04fda20a5bbf/FLAG5314bd121 [2021-11-03 05:32:47,399 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 05:32:47,400 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2736e90a-3e8c-4381-8911-369fb52314f3/sv-benchmarks/c/float-benchs/interpolation.c.v+nlh-reducer.c [2021-11-03 05:32:47,409 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2736e90a-3e8c-4381-8911-369fb52314f3/bin/utaipan-aC7eJsxGYH/data/6705980ed/cfa225ce53774821941f04fda20a5bbf/FLAG5314bd121 [2021-11-03 05:32:47,741 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2736e90a-3e8c-4381-8911-369fb52314f3/bin/utaipan-aC7eJsxGYH/data/6705980ed/cfa225ce53774821941f04fda20a5bbf [2021-11-03 05:32:47,746 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 05:32:47,748 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 05:32:47,751 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 05:32:47,752 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 05:32:47,755 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 05:32:47,756 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:32:47" (1/1) ... [2021-11-03 05:32:47,759 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@191a5736 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:32:47, skipping insertion in model container [2021-11-03 05:32:47,759 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:32:47" (1/1) ... [2021-11-03 05:32:47,767 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 05:32:47,793 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 05:32:48,016 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_2736e90a-3e8c-4381-8911-369fb52314f3/sv-benchmarks/c/float-benchs/interpolation.c.v+nlh-reducer.c[1314,1327] [2021-11-03 05:32:48,025 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:32:48,037 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 05:32:48,062 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_2736e90a-3e8c-4381-8911-369fb52314f3/sv-benchmarks/c/float-benchs/interpolation.c.v+nlh-reducer.c[1314,1327] [2021-11-03 05:32:48,069 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:32:48,085 INFO L208 MainTranslator]: Completed translation [2021-11-03 05:32:48,085 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:32:48 WrapperNode [2021-11-03 05:32:48,085 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 05:32:48,087 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 05:32:48,087 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 05:32:48,087 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 05:32:48,094 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:32:48" (1/1) ... [2021-11-03 05:32:48,105 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:32:48" (1/1) ... [2021-11-03 05:32:48,128 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 05:32:48,129 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 05:32:48,129 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 05:32:48,129 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 05:32:48,137 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:32:48" (1/1) ... [2021-11-03 05:32:48,137 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:32:48" (1/1) ... [2021-11-03 05:32:48,142 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:32:48" (1/1) ... [2021-11-03 05:32:48,142 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:32:48" (1/1) ... [2021-11-03 05:32:48,152 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:32:48" (1/1) ... [2021-11-03 05:32:48,155 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:32:48" (1/1) ... [2021-11-03 05:32:48,158 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:32:48" (1/1) ... [2021-11-03 05:32:48,161 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 05:32:48,162 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 05:32:48,162 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 05:32:48,162 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 05:32:48,163 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:32:48" (1/1) ... [2021-11-03 05:32:48,170 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:32:48,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2736e90a-3e8c-4381-8911-369fb52314f3/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:32:48,199 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2736e90a-3e8c-4381-8911-369fb52314f3/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 05:32:48,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2736e90a-3e8c-4381-8911-369fb52314f3/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 05:32:48,251 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4 [2021-11-03 05:32:48,251 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 05:32:48,251 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 05:32:48,251 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2021-11-03 05:32:48,251 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 05:32:48,253 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 05:32:48,253 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 05:32:49,383 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 05:32:49,383 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-03 05:32:49,385 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:32:49 BoogieIcfgContainer [2021-11-03 05:32:49,385 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 05:32:49,387 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 05:32:49,387 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 05:32:49,390 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 05:32:49,390 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 05:32:47" (1/3) ... [2021-11-03 05:32:49,391 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52ae7c7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:32:49, skipping insertion in model container [2021-11-03 05:32:49,391 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:32:48" (2/3) ... [2021-11-03 05:32:49,391 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52ae7c7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:32:49, skipping insertion in model container [2021-11-03 05:32:49,392 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:32:49" (3/3) ... [2021-11-03 05:32:49,393 INFO L111 eAbstractionObserver]: Analyzing ICFG interpolation.c.v+nlh-reducer.c [2021-11-03 05:32:49,399 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 05:32:49,399 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-03 05:32:49,452 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 05:32:49,460 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-03 05:32:49,460 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-03 05:32:49,475 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 24 states have internal predecessors, (38), 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) [2021-11-03 05:32:49,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-03 05:32:49,481 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:32:49,481 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:32:49,482 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:32:49,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:32:49,500 INFO L85 PathProgramCache]: Analyzing trace with hash 775758574, now seen corresponding path program 1 times [2021-11-03 05:32:49,517 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:32:49,519 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [752487493] [2021-11-03 05:32:49,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:32:49,520 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:32:49,520 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2736e90a-3e8c-4381-8911-369fb52314f3/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:32:49,521 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2736e90a-3e8c-4381-8911-369fb52314f3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:32:49,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2736e90a-3e8c-4381-8911-369fb52314f3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 05:32:49,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:32:49,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 05:32:49,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:32:50,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:32:50,061 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:32:50,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:32:50,185 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:32:50,194 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [752487493] [2021-11-03 05:32:50,195 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [752487493] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:32:50,195 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:32:50,196 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-03 05:32:50,198 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884890738] [2021-11-03 05:32:50,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 05:32:50,203 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:32:50,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 05:32:50,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 05:32:50,223 INFO L87 Difference]: Start difference. First operand has 25 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 24 states have internal predecessors, (38), 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 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 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) [2021-11-03 05:32:54,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:32:54,198 INFO L93 Difference]: Finished difference Result 38 states and 49 transitions. [2021-11-03 05:32:54,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 05:32:54,200 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 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 13 [2021-11-03 05:32:54,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:32:54,208 INFO L225 Difference]: With dead ends: 38 [2021-11-03 05:32:54,209 INFO L226 Difference]: Without dead ends: 22 [2021-11-03 05:32:54,211 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-03 05:32:54,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-11-03 05:32:54,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-11-03 05:32:54,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 21 states have internal predecessors, (27), 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) [2021-11-03 05:32:54,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 27 transitions. [2021-11-03 05:32:54,241 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 27 transitions. Word has length 13 [2021-11-03 05:32:54,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:32:54,241 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 27 transitions. [2021-11-03 05:32:54,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 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) [2021-11-03 05:32:54,242 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 27 transitions. [2021-11-03 05:32:54,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-03 05:32:54,242 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:32:54,243 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:32:54,256 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2736e90a-3e8c-4381-8911-369fb52314f3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-03 05:32:54,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2736e90a-3e8c-4381-8911-369fb52314f3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:32:54,443 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:32:54,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:32:54,444 INFO L85 PathProgramCache]: Analyzing trace with hash 792769235, now seen corresponding path program 1 times [2021-11-03 05:32:54,445 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:32:54,445 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [955522272] [2021-11-03 05:32:54,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:32:54,446 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:32:54,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2736e90a-3e8c-4381-8911-369fb52314f3/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:32:54,449 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2736e90a-3e8c-4381-8911-369fb52314f3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:32:54,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2736e90a-3e8c-4381-8911-369fb52314f3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 05:32:54,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:32:54,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-03 05:32:54,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:32:57,114 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-03 05:32:57,116 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 178 treesize of output 86 [2021-11-03 05:33:17,157 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_3 (_ BitVec 32))) (= (fp ((_ extract 31 31) v_arrayElimCell_3) ((_ extract 30 23) v_arrayElimCell_3) ((_ extract 22 0) v_arrayElimCell_3)) ((_ to_fp 8 24) c_currentRoundingMode (_ bv300 32)))) (= c_currentRoundingMode roundNearestTiesToEven) (exists ((v_arrayElimCell_1 (_ BitVec 32)) (ULTIMATE.start_main_~main__t~0 (_ FloatingPoint 8 24)) (v_arrayElimCell_2 (_ BitVec 32))) (let ((.cse1 (fp ((_ extract 31 31) v_arrayElimCell_1) ((_ extract 30 23) v_arrayElimCell_1) ((_ extract 22 0) v_arrayElimCell_1))) (.cse0 (fp ((_ extract 31 31) v_arrayElimCell_2) ((_ extract 30 23) v_arrayElimCell_2) ((_ extract 22 0) v_arrayElimCell_2)))) (and (= c_ULTIMATE.start_main_~main__z~0 (fp.div c_currentRoundingMode (fp.sub c_currentRoundingMode ULTIMATE.start_main_~main__t~0 .cse0) (fp.sub c_currentRoundingMode .cse1 .cse0))) (fp.geq ULTIMATE.start_main_~main__t~0 .cse0) (= .cse1 ((_ to_fp 8 24) c_currentRoundingMode (_ bv10 32))) (fp.leq ULTIMATE.start_main_~main__t~0 .cse1) (= ((_ to_fp 8 24) c_currentRoundingMode (_ bv5 32)) .cse0))))) is different from false [2021-11-03 05:34:13,702 WARN L838 $PredicateComparison]: unable to prove that (exists ((v_arrayElimCell_1 (_ BitVec 32)) (ULTIMATE.start_main_~main__t~0 (_ FloatingPoint 8 24)) (v_arrayElimCell_2 (_ BitVec 32))) (let ((.cse0 (fp ((_ extract 31 31) v_arrayElimCell_2) ((_ extract 30 23) v_arrayElimCell_2) ((_ extract 22 0) v_arrayElimCell_2))) (.cse1 (fp ((_ extract 31 31) v_arrayElimCell_1) ((_ extract 30 23) v_arrayElimCell_1) ((_ extract 22 0) v_arrayElimCell_1)))) (and (fp.geq ULTIMATE.start_main_~main__t~0 .cse0) (= ((_ to_fp 8 24) roundNearestTiesToEven (_ bv5 32)) .cse0) (not (fp.geq ((_ to_fp 11 53) roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.sub roundNearestTiesToEven ULTIMATE.start_main_~main__t~0 .cse0) (fp.sub roundNearestTiesToEven .cse1 .cse0))) (_ +zero 11 53))) (fp.leq ULTIMATE.start_main_~main__t~0 .cse1) (= .cse1 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv10 32)))))) is different from false [2021-11-03 05:34:15,723 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_arrayElimCell_1 (_ BitVec 32)) (ULTIMATE.start_main_~main__t~0 (_ FloatingPoint 8 24)) (v_arrayElimCell_2 (_ BitVec 32))) (let ((.cse0 (fp ((_ extract 31 31) v_arrayElimCell_2) ((_ extract 30 23) v_arrayElimCell_2) ((_ extract 22 0) v_arrayElimCell_2))) (.cse1 (fp ((_ extract 31 31) v_arrayElimCell_1) ((_ extract 30 23) v_arrayElimCell_1) ((_ extract 22 0) v_arrayElimCell_1)))) (and (fp.geq ULTIMATE.start_main_~main__t~0 .cse0) (= ((_ to_fp 8 24) roundNearestTiesToEven (_ bv5 32)) .cse0) (not (fp.geq ((_ to_fp 11 53) roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.sub roundNearestTiesToEven ULTIMATE.start_main_~main__t~0 .cse0) (fp.sub roundNearestTiesToEven .cse1 .cse0))) (_ +zero 11 53))) (fp.leq ULTIMATE.start_main_~main__t~0 .cse1) (= .cse1 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv10 32)))))) is different from true [2021-11-03 05:36:05,051 WARN L838 $PredicateComparison]: unable to prove that (exists ((v_arrayElimCell_1 (_ BitVec 32)) (ULTIMATE.start_main_~main__t~0 (_ FloatingPoint 8 24)) (v_arrayElimCell_2 (_ BitVec 32))) (let ((.cse0 (fp ((_ extract 31 31) v_arrayElimCell_2) ((_ extract 30 23) v_arrayElimCell_2) ((_ extract 22 0) v_arrayElimCell_2))) (.cse1 (fp ((_ extract 31 31) v_arrayElimCell_1) ((_ extract 30 23) v_arrayElimCell_1) ((_ extract 22 0) v_arrayElimCell_1)))) (and (fp.geq ULTIMATE.start_main_~main__t~0 .cse0) (= ((_ to_fp 8 24) roundNearestTiesToEven (_ bv5 32)) .cse0) (not (fp.geq ((_ to_fp 11 53) roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.sub roundNearestTiesToEven ULTIMATE.start_main_~main__t~0 .cse0) (fp.sub roundNearestTiesToEven .cse1 .cse0))) (_ +zero 11 53))) (= .cse1 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv10 32)))))) is different from false [2021-11-03 05:36:07,074 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_arrayElimCell_1 (_ BitVec 32)) (ULTIMATE.start_main_~main__t~0 (_ FloatingPoint 8 24)) (v_arrayElimCell_2 (_ BitVec 32))) (let ((.cse0 (fp ((_ extract 31 31) v_arrayElimCell_2) ((_ extract 30 23) v_arrayElimCell_2) ((_ extract 22 0) v_arrayElimCell_2))) (.cse1 (fp ((_ extract 31 31) v_arrayElimCell_1) ((_ extract 30 23) v_arrayElimCell_1) ((_ extract 22 0) v_arrayElimCell_1)))) (and (fp.geq ULTIMATE.start_main_~main__t~0 .cse0) (= ((_ to_fp 8 24) roundNearestTiesToEven (_ bv5 32)) .cse0) (not (fp.geq ((_ to_fp 11 53) roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.sub roundNearestTiesToEven ULTIMATE.start_main_~main__t~0 .cse0) (fp.sub roundNearestTiesToEven .cse1 .cse0))) (_ +zero 11 53))) (= .cse1 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv10 32)))))) is different from true [2021-11-03 05:36:55,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:36:55,702 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:37:03,355 WARN L838 $PredicateComparison]: unable to prove that (fp.geq ((_ to_fp 11 53) c_currentRoundingMode (let ((.cse2 (bvmul c_ULTIMATE.start_main_~main__i~0 (_ bv4 32)))) (let ((.cse0 (let ((.cse3 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#main__min~0.base|) (bvadd |c_ULTIMATE.start_main_~#main__min~0.offset| .cse2)))) (fp ((_ extract 31 31) .cse3) ((_ extract 30 23) .cse3) ((_ extract 22 0) .cse3))))) (fp.div c_currentRoundingMode (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~main__t~0 .cse0) (fp.sub c_currentRoundingMode (let ((.cse1 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#main__max~0.base|) (bvadd |c_ULTIMATE.start_main_~#main__max~0.offset| .cse2)))) (fp ((_ extract 31 31) .cse1) ((_ extract 30 23) .cse1) ((_ extract 22 0) .cse1))) .cse0))))) (_ +zero 11 53)) is different from false [2021-11-03 05:37:05,407 WARN L860 $PredicateComparison]: unable to prove that (fp.geq ((_ to_fp 11 53) c_currentRoundingMode (let ((.cse2 (bvmul c_ULTIMATE.start_main_~main__i~0 (_ bv4 32)))) (let ((.cse0 (let ((.cse3 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#main__min~0.base|) (bvadd |c_ULTIMATE.start_main_~#main__min~0.offset| .cse2)))) (fp ((_ extract 31 31) .cse3) ((_ extract 30 23) .cse3) ((_ extract 22 0) .cse3))))) (fp.div c_currentRoundingMode (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~main__t~0 .cse0) (fp.sub c_currentRoundingMode (let ((.cse1 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#main__max~0.base|) (bvadd |c_ULTIMATE.start_main_~#main__max~0.offset| .cse2)))) (fp ((_ extract 31 31) .cse1) ((_ extract 30 23) .cse1) ((_ extract 22 0) .cse1))) .cse0))))) (_ +zero 11 53)) is different from true [2021-11-03 05:37:15,747 WARN L838 $PredicateComparison]: unable to prove that (or (fp.geq ((_ to_fp 11 53) c_currentRoundingMode (let ((.cse2 (bvmul c_ULTIMATE.start_main_~main__i~0 (_ bv4 32)))) (let ((.cse0 (let ((.cse3 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#main__min~0.base|) (bvadd |c_ULTIMATE.start_main_~#main__min~0.offset| .cse2)))) (fp ((_ extract 31 31) .cse3) ((_ extract 30 23) .cse3) ((_ extract 22 0) .cse3))))) (fp.div c_currentRoundingMode (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~main__t~0 .cse0) (fp.sub c_currentRoundingMode (let ((.cse1 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#main__max~0.base|) (bvadd |c_ULTIMATE.start_main_~#main__max~0.offset| .cse2)))) (fp ((_ extract 31 31) .cse1) ((_ extract 30 23) .cse1) ((_ extract 22 0) .cse1))) .cse0))))) (_ +zero 11 53)) (not (fp.leq c_ULTIMATE.start_main_~main__t~0 |c_ULTIMATE.start_main_#t~mem10|))) is different from false [2021-11-03 05:37:17,800 WARN L860 $PredicateComparison]: unable to prove that (or (fp.geq ((_ to_fp 11 53) c_currentRoundingMode (let ((.cse2 (bvmul c_ULTIMATE.start_main_~main__i~0 (_ bv4 32)))) (let ((.cse0 (let ((.cse3 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#main__min~0.base|) (bvadd |c_ULTIMATE.start_main_~#main__min~0.offset| .cse2)))) (fp ((_ extract 31 31) .cse3) ((_ extract 30 23) .cse3) ((_ extract 22 0) .cse3))))) (fp.div c_currentRoundingMode (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~main__t~0 .cse0) (fp.sub c_currentRoundingMode (let ((.cse1 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#main__max~0.base|) (bvadd |c_ULTIMATE.start_main_~#main__max~0.offset| .cse2)))) (fp ((_ extract 31 31) .cse1) ((_ extract 30 23) .cse1) ((_ extract 22 0) .cse1))) .cse0))))) (_ +zero 11 53)) (not (fp.leq c_ULTIMATE.start_main_~main__t~0 |c_ULTIMATE.start_main_#t~mem10|))) is different from true [2021-11-03 05:37:26,610 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse3 (bvmul c_ULTIMATE.start_main_~main__i~0 (_ bv4 32)))) (let ((.cse0 (let ((.cse4 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#main__max~0.base|) (bvadd |c_ULTIMATE.start_main_~#main__max~0.offset| .cse3)))) (fp ((_ extract 31 31) .cse4) ((_ extract 30 23) .cse4) ((_ extract 22 0) .cse4))))) (or (not (fp.leq c_ULTIMATE.start_main_~main__t~0 .cse0)) (fp.geq ((_ to_fp 11 53) c_currentRoundingMode (let ((.cse1 (let ((.cse2 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#main__min~0.base|) (bvadd |c_ULTIMATE.start_main_~#main__min~0.offset| .cse3)))) (fp ((_ extract 31 31) .cse2) ((_ extract 30 23) .cse2) ((_ extract 22 0) .cse2))))) (fp.div c_currentRoundingMode (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~main__t~0 .cse1) (fp.sub c_currentRoundingMode .cse0 .cse1)))) (_ +zero 11 53))))) is different from false [2021-11-03 05:37:28,663 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse3 (bvmul c_ULTIMATE.start_main_~main__i~0 (_ bv4 32)))) (let ((.cse0 (let ((.cse4 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#main__max~0.base|) (bvadd |c_ULTIMATE.start_main_~#main__max~0.offset| .cse3)))) (fp ((_ extract 31 31) .cse4) ((_ extract 30 23) .cse4) ((_ extract 22 0) .cse4))))) (or (not (fp.leq c_ULTIMATE.start_main_~main__t~0 .cse0)) (fp.geq ((_ to_fp 11 53) c_currentRoundingMode (let ((.cse1 (let ((.cse2 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#main__min~0.base|) (bvadd |c_ULTIMATE.start_main_~#main__min~0.offset| .cse3)))) (fp ((_ extract 31 31) .cse2) ((_ extract 30 23) .cse2) ((_ extract 22 0) .cse2))))) (fp.div c_currentRoundingMode (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~main__t~0 .cse1) (fp.sub c_currentRoundingMode .cse0 .cse1)))) (_ +zero 11 53))))) is different from true [2021-11-03 05:37:38,541 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (let ((.cse3 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#main__max~0.base|) |c_ULTIMATE.start_main_~#main__max~0.offset|))) (fp ((_ extract 31 31) .cse3) ((_ extract 30 23) .cse3) ((_ extract 22 0) .cse3))))) (or (fp.geq ((_ to_fp 11 53) c_currentRoundingMode (let ((.cse0 (let ((.cse2 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#main__min~0.base|) |c_ULTIMATE.start_main_~#main__min~0.offset|))) (fp ((_ extract 31 31) .cse2) ((_ extract 30 23) .cse2) ((_ extract 22 0) .cse2))))) (fp.div c_currentRoundingMode (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~main__t~0 .cse0) (fp.sub c_currentRoundingMode .cse1 .cse0)))) (_ +zero 11 53)) (not (fp.leq c_ULTIMATE.start_main_~main__t~0 .cse1)))) is different from false [2021-11-03 05:37:40,597 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 (let ((.cse3 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#main__max~0.base|) |c_ULTIMATE.start_main_~#main__max~0.offset|))) (fp ((_ extract 31 31) .cse3) ((_ extract 30 23) .cse3) ((_ extract 22 0) .cse3))))) (or (fp.geq ((_ to_fp 11 53) c_currentRoundingMode (let ((.cse0 (let ((.cse2 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#main__min~0.base|) |c_ULTIMATE.start_main_~#main__min~0.offset|))) (fp ((_ extract 31 31) .cse2) ((_ extract 30 23) .cse2) ((_ extract 22 0) .cse2))))) (fp.div c_currentRoundingMode (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~main__t~0 .cse0) (fp.sub c_currentRoundingMode .cse1 .cse0)))) (_ +zero 11 53)) (not (fp.leq c_ULTIMATE.start_main_~main__t~0 .cse1)))) is different from true [2021-11-03 05:37:55,113 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (let ((.cse3 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#main__max~0.base|) |c_ULTIMATE.start_main_~#main__max~0.offset|))) (fp ((_ extract 31 31) .cse3) ((_ extract 30 23) .cse3) ((_ extract 22 0) .cse3))))) (or (not (fp.leq c_ULTIMATE.start_main_~main__t~0 |c_ULTIMATE.start_main_#t~mem9|)) (fp.geq ((_ to_fp 11 53) c_currentRoundingMode (let ((.cse0 (let ((.cse2 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#main__min~0.base|) |c_ULTIMATE.start_main_~#main__min~0.offset|))) (fp ((_ extract 31 31) .cse2) ((_ extract 30 23) .cse2) ((_ extract 22 0) .cse2))))) (fp.div c_currentRoundingMode (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~main__t~0 .cse0) (fp.sub c_currentRoundingMode .cse1 .cse0)))) (_ +zero 11 53)) (not (fp.leq c_ULTIMATE.start_main_~main__t~0 .cse1)))) is different from false [2021-11-03 05:37:57,167 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 (let ((.cse3 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#main__max~0.base|) |c_ULTIMATE.start_main_~#main__max~0.offset|))) (fp ((_ extract 31 31) .cse3) ((_ extract 30 23) .cse3) ((_ extract 22 0) .cse3))))) (or (not (fp.leq c_ULTIMATE.start_main_~main__t~0 |c_ULTIMATE.start_main_#t~mem9|)) (fp.geq ((_ to_fp 11 53) c_currentRoundingMode (let ((.cse0 (let ((.cse2 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#main__min~0.base|) |c_ULTIMATE.start_main_~#main__min~0.offset|))) (fp ((_ extract 31 31) .cse2) ((_ extract 30 23) .cse2) ((_ extract 22 0) .cse2))))) (fp.div c_currentRoundingMode (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~main__t~0 .cse0) (fp.sub c_currentRoundingMode .cse1 .cse0)))) (_ +zero 11 53)) (not (fp.leq c_ULTIMATE.start_main_~main__t~0 .cse1)))) is different from true [2021-11-03 05:38:14,585 WARN L838 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_main_~main__t~0 (_ FloatingPoint 8 24))) (let ((.cse4 (select |c_#memory_int| |c_ULTIMATE.start_main_~#main__max~0.base|))) (let ((.cse1 (let ((.cse5 (select .cse4 |c_ULTIMATE.start_main_~#main__max~0.offset|))) (fp ((_ extract 31 31) .cse5) ((_ extract 30 23) .cse5) ((_ extract 22 0) .cse5))))) (or (fp.geq ((_ to_fp 11 53) c_currentRoundingMode (let ((.cse0 (let ((.cse2 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#main__min~0.base|) |c_ULTIMATE.start_main_~#main__min~0.offset|))) (fp ((_ extract 31 31) .cse2) ((_ extract 30 23) .cse2) ((_ extract 22 0) .cse2))))) (fp.div c_currentRoundingMode (fp.sub c_currentRoundingMode ULTIMATE.start_main_~main__t~0 .cse0) (fp.sub c_currentRoundingMode .cse1 .cse0)))) (_ +zero 11 53)) (not (fp.leq ULTIMATE.start_main_~main__t~0 .cse1)) (not (fp.leq ULTIMATE.start_main_~main__t~0 (let ((.cse3 (select .cse4 (bvadd (_ bv16 32) |c_ULTIMATE.start_main_~#main__max~0.offset|)))) (fp ((_ extract 31 31) .cse3) ((_ extract 30 23) .cse3) ((_ extract 22 0) .cse3))))) (not (fp.geq ULTIMATE.start_main_~main__t~0 |c_ULTIMATE.start_main_#t~mem8|)))))) is different from false [2021-11-03 05:38:16,635 WARN L860 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_main_~main__t~0 (_ FloatingPoint 8 24))) (let ((.cse4 (select |c_#memory_int| |c_ULTIMATE.start_main_~#main__max~0.base|))) (let ((.cse1 (let ((.cse5 (select .cse4 |c_ULTIMATE.start_main_~#main__max~0.offset|))) (fp ((_ extract 31 31) .cse5) ((_ extract 30 23) .cse5) ((_ extract 22 0) .cse5))))) (or (fp.geq ((_ to_fp 11 53) c_currentRoundingMode (let ((.cse0 (let ((.cse2 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#main__min~0.base|) |c_ULTIMATE.start_main_~#main__min~0.offset|))) (fp ((_ extract 31 31) .cse2) ((_ extract 30 23) .cse2) ((_ extract 22 0) .cse2))))) (fp.div c_currentRoundingMode (fp.sub c_currentRoundingMode ULTIMATE.start_main_~main__t~0 .cse0) (fp.sub c_currentRoundingMode .cse1 .cse0)))) (_ +zero 11 53)) (not (fp.leq ULTIMATE.start_main_~main__t~0 .cse1)) (not (fp.leq ULTIMATE.start_main_~main__t~0 (let ((.cse3 (select .cse4 (bvadd (_ bv16 32) |c_ULTIMATE.start_main_~#main__max~0.offset|)))) (fp ((_ extract 31 31) .cse3) ((_ extract 30 23) .cse3) ((_ extract 22 0) .cse3))))) (not (fp.geq ULTIMATE.start_main_~main__t~0 |c_ULTIMATE.start_main_#t~mem8|)))))) is different from true [2021-11-03 05:38:30,866 WARN L207 SmtUtils]: Spent 14.17 s on a formula simplification. DAG size of input: 8 DAG size of output: 3 [2021-11-03 05:38:30,867 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-03 05:38:30,867 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 207 treesize of output 102 [2021-11-03 05:39:39,969 WARN L838 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_main_~main__t~0 (_ FloatingPoint 8 24)) (v_arrayElimCell_6 (_ BitVec 32)) (v_arrayElimCell_5 (_ BitVec 32)) (v_arrayElimCell_4 (_ BitVec 32))) (let ((.cse2 (fp ((_ extract 31 31) v_arrayElimCell_5) ((_ extract 30 23) v_arrayElimCell_5) ((_ extract 22 0) v_arrayElimCell_5))) (.cse1 (fp ((_ extract 31 31) v_arrayElimCell_4) ((_ extract 30 23) v_arrayElimCell_4) ((_ extract 22 0) v_arrayElimCell_4))) (.cse0 (fp ((_ extract 31 31) v_arrayElimCell_6) ((_ extract 30 23) v_arrayElimCell_6) ((_ extract 22 0) v_arrayElimCell_6)))) (or (not (= .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv300 32)))) (fp.geq ((_ to_fp 11 53) c_currentRoundingMode (fp.div c_currentRoundingMode (fp.sub c_currentRoundingMode ULTIMATE.start_main_~main__t~0 .cse1) (fp.sub c_currentRoundingMode .cse2 .cse1))) (_ +zero 11 53)) (not (= ((_ to_fp 8 24) c_currentRoundingMode (_ bv5 32)) .cse1)) (not (= .cse2 ((_ to_fp 8 24) c_currentRoundingMode (_ bv10 32)))) (not (fp.geq ULTIMATE.start_main_~main__t~0 .cse1)) (not (fp.leq ULTIMATE.start_main_~main__t~0 .cse0))))) is different from false [2021-11-03 05:39:42,018 WARN L860 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_main_~main__t~0 (_ FloatingPoint 8 24)) (v_arrayElimCell_6 (_ BitVec 32)) (v_arrayElimCell_5 (_ BitVec 32)) (v_arrayElimCell_4 (_ BitVec 32))) (let ((.cse2 (fp ((_ extract 31 31) v_arrayElimCell_5) ((_ extract 30 23) v_arrayElimCell_5) ((_ extract 22 0) v_arrayElimCell_5))) (.cse1 (fp ((_ extract 31 31) v_arrayElimCell_4) ((_ extract 30 23) v_arrayElimCell_4) ((_ extract 22 0) v_arrayElimCell_4))) (.cse0 (fp ((_ extract 31 31) v_arrayElimCell_6) ((_ extract 30 23) v_arrayElimCell_6) ((_ extract 22 0) v_arrayElimCell_6)))) (or (not (= .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv300 32)))) (fp.geq ((_ to_fp 11 53) c_currentRoundingMode (fp.div c_currentRoundingMode (fp.sub c_currentRoundingMode ULTIMATE.start_main_~main__t~0 .cse1) (fp.sub c_currentRoundingMode .cse2 .cse1))) (_ +zero 11 53)) (not (= ((_ to_fp 8 24) c_currentRoundingMode (_ bv5 32)) .cse1)) (not (= .cse2 ((_ to_fp 8 24) c_currentRoundingMode (_ bv10 32)))) (not (fp.geq ULTIMATE.start_main_~main__t~0 .cse1)) (not (fp.leq ULTIMATE.start_main_~main__t~0 .cse0))))) is different from true [2021-11-03 05:39:42,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:39:42,018 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:39:42,019 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [955522272] [2021-11-03 05:39:42,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [955522272] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:39:42,019 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:39:42,019 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 9] imperfect sequences [] total 19 [2021-11-03 05:39:42,019 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116232434] [2021-11-03 05:39:42,021 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-03 05:39:42,021 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:39:42,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-03 05:39:42,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=63, Unknown=19, NotChecked=250, Total=380 [2021-11-03 05:39:42,024 INFO L87 Difference]: Start difference. First operand 22 states and 27 transitions. Second operand has 20 states, 20 states have (on average 1.3) internal successors, (26), 19 states have internal predecessors, (26), 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) [2021-11-03 05:39:44,263 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((ULTIMATE.start_main_~main__t~0 (_ FloatingPoint 8 24)) (v_arrayElimCell_6 (_ BitVec 32)) (v_arrayElimCell_5 (_ BitVec 32)) (v_arrayElimCell_4 (_ BitVec 32))) (let ((.cse2 (fp ((_ extract 31 31) v_arrayElimCell_5) ((_ extract 30 23) v_arrayElimCell_5) ((_ extract 22 0) v_arrayElimCell_5))) (.cse1 (fp ((_ extract 31 31) v_arrayElimCell_4) ((_ extract 30 23) v_arrayElimCell_4) ((_ extract 22 0) v_arrayElimCell_4))) (.cse0 (fp ((_ extract 31 31) v_arrayElimCell_6) ((_ extract 30 23) v_arrayElimCell_6) ((_ extract 22 0) v_arrayElimCell_6)))) (or (not (= .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv300 32)))) (fp.geq ((_ to_fp 11 53) c_currentRoundingMode (fp.div c_currentRoundingMode (fp.sub c_currentRoundingMode ULTIMATE.start_main_~main__t~0 .cse1) (fp.sub c_currentRoundingMode .cse2 .cse1))) (_ +zero 11 53)) (not (= ((_ to_fp 8 24) c_currentRoundingMode (_ bv5 32)) .cse1)) (not (= .cse2 ((_ to_fp 8 24) c_currentRoundingMode (_ bv10 32)))) (not (fp.geq ULTIMATE.start_main_~main__t~0 .cse1)) (not (fp.leq ULTIMATE.start_main_~main__t~0 .cse0))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-11-03 05:39:46,311 WARN L860 $PredicateComparison]: unable to prove that (and (forall ((ULTIMATE.start_main_~main__t~0 (_ FloatingPoint 8 24)) (v_arrayElimCell_6 (_ BitVec 32)) (v_arrayElimCell_5 (_ BitVec 32)) (v_arrayElimCell_4 (_ BitVec 32))) (let ((.cse2 (fp ((_ extract 31 31) v_arrayElimCell_5) ((_ extract 30 23) v_arrayElimCell_5) ((_ extract 22 0) v_arrayElimCell_5))) (.cse1 (fp ((_ extract 31 31) v_arrayElimCell_4) ((_ extract 30 23) v_arrayElimCell_4) ((_ extract 22 0) v_arrayElimCell_4))) (.cse0 (fp ((_ extract 31 31) v_arrayElimCell_6) ((_ extract 30 23) v_arrayElimCell_6) ((_ extract 22 0) v_arrayElimCell_6)))) (or (not (= .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv300 32)))) (fp.geq ((_ to_fp 11 53) c_currentRoundingMode (fp.div c_currentRoundingMode (fp.sub c_currentRoundingMode ULTIMATE.start_main_~main__t~0 .cse1) (fp.sub c_currentRoundingMode .cse2 .cse1))) (_ +zero 11 53)) (not (= ((_ to_fp 8 24) c_currentRoundingMode (_ bv5 32)) .cse1)) (not (= .cse2 ((_ to_fp 8 24) c_currentRoundingMode (_ bv10 32)))) (not (fp.geq ULTIMATE.start_main_~main__t~0 .cse1)) (not (fp.leq ULTIMATE.start_main_~main__t~0 .cse0))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-11-03 05:39:48,341 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (select |c_#memory_int| |c_ULTIMATE.start_main_~#main__max~0.base|)) (.cse8 (let ((.cse10 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#main__min~0.base|) |c_ULTIMATE.start_main_~#main__min~0.offset|))) (fp ((_ extract 31 31) .cse10) ((_ extract 30 23) .cse10) ((_ extract 22 0) .cse10))))) (and (= (let ((.cse0 (select .cse1 (bvadd (_ bv16 32) |c_ULTIMATE.start_main_~#main__max~0.offset|)))) (fp ((_ extract 31 31) .cse0) ((_ extract 30 23) .cse0) ((_ extract 22 0) .cse0))) ((_ to_fp 8 24) c_currentRoundingMode (_ bv300 32))) (forall ((ULTIMATE.start_main_~main__t~0 (_ FloatingPoint 8 24))) (let ((.cse6 (select |c_#memory_int| |c_ULTIMATE.start_main_~#main__max~0.base|))) (let ((.cse3 (let ((.cse7 (select .cse6 |c_ULTIMATE.start_main_~#main__max~0.offset|))) (fp ((_ extract 31 31) .cse7) ((_ extract 30 23) .cse7) ((_ extract 22 0) .cse7))))) (or (fp.geq ((_ to_fp 11 53) c_currentRoundingMode (let ((.cse2 (let ((.cse4 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#main__min~0.base|) |c_ULTIMATE.start_main_~#main__min~0.offset|))) (fp ((_ extract 31 31) .cse4) ((_ extract 30 23) .cse4) ((_ extract 22 0) .cse4))))) (fp.div c_currentRoundingMode (fp.sub c_currentRoundingMode ULTIMATE.start_main_~main__t~0 .cse2) (fp.sub c_currentRoundingMode .cse3 .cse2)))) (_ +zero 11 53)) (not (fp.leq ULTIMATE.start_main_~main__t~0 .cse3)) (not (fp.leq ULTIMATE.start_main_~main__t~0 (let ((.cse5 (select .cse6 (bvadd (_ bv16 32) |c_ULTIMATE.start_main_~#main__max~0.offset|)))) (fp ((_ extract 31 31) .cse5) ((_ extract 30 23) .cse5) ((_ extract 22 0) .cse5))))) (not (fp.geq ULTIMATE.start_main_~main__t~0 |c_ULTIMATE.start_main_#t~mem8|)))))) (= .cse8 ((_ to_fp 8 24) c_currentRoundingMode (_ bv5 32))) (= |c_ULTIMATE.start_main_~#main__min~0.offset| (_ bv0 32)) (= (let ((.cse9 (select .cse1 |c_ULTIMATE.start_main_~#main__max~0.offset|))) (fp ((_ extract 31 31) .cse9) ((_ extract 30 23) .cse9) ((_ extract 22 0) .cse9))) ((_ to_fp 8 24) c_currentRoundingMode (_ bv10 32))) (= |c_ULTIMATE.start_main_~#main__max~0.offset| (_ bv0 32)) (= c_currentRoundingMode roundNearestTiesToEven) (= .cse8 |c_ULTIMATE.start_main_#t~mem8|))) is different from false [2021-11-03 05:39:50,394 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 (select |c_#memory_int| |c_ULTIMATE.start_main_~#main__max~0.base|)) (.cse8 (let ((.cse10 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#main__min~0.base|) |c_ULTIMATE.start_main_~#main__min~0.offset|))) (fp ((_ extract 31 31) .cse10) ((_ extract 30 23) .cse10) ((_ extract 22 0) .cse10))))) (and (= (let ((.cse0 (select .cse1 (bvadd (_ bv16 32) |c_ULTIMATE.start_main_~#main__max~0.offset|)))) (fp ((_ extract 31 31) .cse0) ((_ extract 30 23) .cse0) ((_ extract 22 0) .cse0))) ((_ to_fp 8 24) c_currentRoundingMode (_ bv300 32))) (forall ((ULTIMATE.start_main_~main__t~0 (_ FloatingPoint 8 24))) (let ((.cse6 (select |c_#memory_int| |c_ULTIMATE.start_main_~#main__max~0.base|))) (let ((.cse3 (let ((.cse7 (select .cse6 |c_ULTIMATE.start_main_~#main__max~0.offset|))) (fp ((_ extract 31 31) .cse7) ((_ extract 30 23) .cse7) ((_ extract 22 0) .cse7))))) (or (fp.geq ((_ to_fp 11 53) c_currentRoundingMode (let ((.cse2 (let ((.cse4 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#main__min~0.base|) |c_ULTIMATE.start_main_~#main__min~0.offset|))) (fp ((_ extract 31 31) .cse4) ((_ extract 30 23) .cse4) ((_ extract 22 0) .cse4))))) (fp.div c_currentRoundingMode (fp.sub c_currentRoundingMode ULTIMATE.start_main_~main__t~0 .cse2) (fp.sub c_currentRoundingMode .cse3 .cse2)))) (_ +zero 11 53)) (not (fp.leq ULTIMATE.start_main_~main__t~0 .cse3)) (not (fp.leq ULTIMATE.start_main_~main__t~0 (let ((.cse5 (select .cse6 (bvadd (_ bv16 32) |c_ULTIMATE.start_main_~#main__max~0.offset|)))) (fp ((_ extract 31 31) .cse5) ((_ extract 30 23) .cse5) ((_ extract 22 0) .cse5))))) (not (fp.geq ULTIMATE.start_main_~main__t~0 |c_ULTIMATE.start_main_#t~mem8|)))))) (= .cse8 ((_ to_fp 8 24) c_currentRoundingMode (_ bv5 32))) (= |c_ULTIMATE.start_main_~#main__min~0.offset| (_ bv0 32)) (= (let ((.cse9 (select .cse1 |c_ULTIMATE.start_main_~#main__max~0.offset|))) (fp ((_ extract 31 31) .cse9) ((_ extract 30 23) .cse9) ((_ extract 22 0) .cse9))) ((_ to_fp 8 24) c_currentRoundingMode (_ bv10 32))) (= |c_ULTIMATE.start_main_~#main__max~0.offset| (_ bv0 32)) (= c_currentRoundingMode roundNearestTiesToEven) (= .cse8 |c_ULTIMATE.start_main_#t~mem8|))) is different from true [2021-11-03 05:39:52,428 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse4 (select |c_#memory_int| |c_ULTIMATE.start_main_~#main__max~0.base|))) (let ((.cse0 (let ((.cse6 (select .cse4 (bvadd (_ bv16 32) |c_ULTIMATE.start_main_~#main__max~0.offset|)))) (fp ((_ extract 31 31) .cse6) ((_ extract 30 23) .cse6) ((_ extract 22 0) .cse6)))) (.cse1 (let ((.cse5 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#main__min~0.base|) |c_ULTIMATE.start_main_~#main__min~0.offset|))) (fp ((_ extract 31 31) .cse5) ((_ extract 30 23) .cse5) ((_ extract 22 0) .cse5)))) (.cse2 (let ((.cse3 (select .cse4 |c_ULTIMATE.start_main_~#main__max~0.offset|))) (fp ((_ extract 31 31) .cse3) ((_ extract 30 23) .cse3) ((_ extract 22 0) .cse3))))) (and (= .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv300 32))) (= .cse0 |c_ULTIMATE.start_main_#t~mem9|) (= .cse1 ((_ to_fp 8 24) c_currentRoundingMode (_ bv5 32))) (or (not (fp.leq c_ULTIMATE.start_main_~main__t~0 |c_ULTIMATE.start_main_#t~mem9|)) (fp.geq ((_ to_fp 11 53) c_currentRoundingMode (fp.div c_currentRoundingMode (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~main__t~0 .cse1) (fp.sub c_currentRoundingMode .cse2 .cse1))) (_ +zero 11 53)) (not (fp.leq c_ULTIMATE.start_main_~main__t~0 .cse2))) (= |c_ULTIMATE.start_main_~#main__min~0.offset| (_ bv0 32)) (fp.geq c_ULTIMATE.start_main_~main__t~0 .cse1) (= .cse2 ((_ to_fp 8 24) c_currentRoundingMode (_ bv10 32))) (= |c_ULTIMATE.start_main_~#main__max~0.offset| (_ bv0 32)) (= c_currentRoundingMode roundNearestTiesToEven)))) is different from false [2021-11-03 05:39:57,591 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse4 (select |c_#memory_int| |c_ULTIMATE.start_main_~#main__max~0.base|))) (let ((.cse0 (let ((.cse6 (select .cse4 (bvadd (_ bv16 32) |c_ULTIMATE.start_main_~#main__max~0.offset|)))) (fp ((_ extract 31 31) .cse6) ((_ extract 30 23) .cse6) ((_ extract 22 0) .cse6)))) (.cse1 (let ((.cse5 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#main__min~0.base|) |c_ULTIMATE.start_main_~#main__min~0.offset|))) (fp ((_ extract 31 31) .cse5) ((_ extract 30 23) .cse5) ((_ extract 22 0) .cse5)))) (.cse2 (let ((.cse3 (select .cse4 |c_ULTIMATE.start_main_~#main__max~0.offset|))) (fp ((_ extract 31 31) .cse3) ((_ extract 30 23) .cse3) ((_ extract 22 0) .cse3))))) (and (= .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv300 32))) (fp.leq c_ULTIMATE.start_main_~main__t~0 .cse0) (= .cse1 ((_ to_fp 8 24) c_currentRoundingMode (_ bv5 32))) (= |c_ULTIMATE.start_main_~#main__min~0.offset| (_ bv0 32)) (fp.geq c_ULTIMATE.start_main_~main__t~0 .cse1) (= .cse2 ((_ to_fp 8 24) c_currentRoundingMode (_ bv10 32))) (= |c_ULTIMATE.start_main_~#main__max~0.offset| (_ bv0 32)) (= c_currentRoundingMode roundNearestTiesToEven) (or (fp.geq ((_ to_fp 11 53) c_currentRoundingMode (fp.div c_currentRoundingMode (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~main__t~0 .cse1) (fp.sub c_currentRoundingMode .cse2 .cse1))) (_ +zero 11 53)) (not (fp.leq c_ULTIMATE.start_main_~main__t~0 .cse2)))))) is different from true [2021-11-03 05:40:01,331 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse4 (select |c_#memory_int| |c_ULTIMATE.start_main_~#main__min~0.base|)) (.cse7 (select |c_#memory_int| |c_ULTIMATE.start_main_~#main__max~0.base|))) (let ((.cse0 (let ((.cse11 (select .cse7 (bvadd (_ bv16 32) |c_ULTIMATE.start_main_~#main__max~0.offset|)))) (fp ((_ extract 31 31) .cse11) ((_ extract 30 23) .cse11) ((_ extract 22 0) .cse11)))) (.cse8 (let ((.cse10 (select .cse4 |c_ULTIMATE.start_main_~#main__min~0.offset|))) (fp ((_ extract 31 31) .cse10) ((_ extract 30 23) .cse10) ((_ extract 22 0) .cse10))))) (and (= .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv300 32))) (fp.leq c_ULTIMATE.start_main_~main__t~0 .cse0) (let ((.cse5 (bvmul c_ULTIMATE.start_main_~main__i~0 (_ bv4 32)))) (let ((.cse1 (let ((.cse6 (select .cse7 (bvadd |c_ULTIMATE.start_main_~#main__max~0.offset| .cse5)))) (fp ((_ extract 31 31) .cse6) ((_ extract 30 23) .cse6) ((_ extract 22 0) .cse6))))) (or (not (fp.leq c_ULTIMATE.start_main_~main__t~0 .cse1)) (fp.geq ((_ to_fp 11 53) c_currentRoundingMode (let ((.cse2 (let ((.cse3 (select .cse4 (bvadd |c_ULTIMATE.start_main_~#main__min~0.offset| .cse5)))) (fp ((_ extract 31 31) .cse3) ((_ extract 30 23) .cse3) ((_ extract 22 0) .cse3))))) (fp.div c_currentRoundingMode (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~main__t~0 .cse2) (fp.sub c_currentRoundingMode .cse1 .cse2)))) (_ +zero 11 53))))) (= .cse8 ((_ to_fp 8 24) c_currentRoundingMode (_ bv5 32))) (= |c_ULTIMATE.start_main_~#main__min~0.offset| (_ bv0 32)) (fp.geq c_ULTIMATE.start_main_~main__t~0 .cse8) (= (let ((.cse9 (select .cse7 |c_ULTIMATE.start_main_~#main__max~0.offset|))) (fp ((_ extract 31 31) .cse9) ((_ extract 30 23) .cse9) ((_ extract 22 0) .cse9))) ((_ to_fp 8 24) c_currentRoundingMode (_ bv10 32))) (= |c_ULTIMATE.start_main_~#main__max~0.offset| (_ bv0 32)) (= c_currentRoundingMode roundNearestTiesToEven) (= c_ULTIMATE.start_main_~main__i~0 (_ bv0 32))))) is different from true [2021-11-03 05:40:05,269 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse5 (select |c_#memory_int| |c_ULTIMATE.start_main_~#main__min~0.base|)) (.cse6 (bvmul c_ULTIMATE.start_main_~main__i~0 (_ bv4 32))) (.cse8 (select |c_#memory_int| |c_ULTIMATE.start_main_~#main__max~0.base|))) (let ((.cse1 (let ((.cse11 (select .cse8 (bvadd (_ bv16 32) |c_ULTIMATE.start_main_~#main__max~0.offset|)))) (fp ((_ extract 31 31) .cse11) ((_ extract 30 23) .cse11) ((_ extract 22 0) .cse11)))) (.cse0 (let ((.cse10 (select .cse8 (bvadd |c_ULTIMATE.start_main_~#main__max~0.offset| .cse6)))) (fp ((_ extract 31 31) .cse10) ((_ extract 30 23) .cse10) ((_ extract 22 0) .cse10)))) (.cse2 (let ((.cse9 (select .cse5 |c_ULTIMATE.start_main_~#main__min~0.offset|))) (fp ((_ extract 31 31) .cse9) ((_ extract 30 23) .cse9) ((_ extract 22 0) .cse9))))) (and (= |c_ULTIMATE.start_main_#t~mem10| .cse0) (= .cse1 ((_ to_fp 8 24) c_currentRoundingMode (_ bv300 32))) (fp.leq c_ULTIMATE.start_main_~main__t~0 .cse1) (= .cse2 ((_ to_fp 8 24) c_currentRoundingMode (_ bv5 32))) (= |c_ULTIMATE.start_main_~#main__min~0.offset| (_ bv0 32)) (or (fp.geq ((_ to_fp 11 53) c_currentRoundingMode (let ((.cse3 (let ((.cse4 (select .cse5 (bvadd |c_ULTIMATE.start_main_~#main__min~0.offset| .cse6)))) (fp ((_ extract 31 31) .cse4) ((_ extract 30 23) .cse4) ((_ extract 22 0) .cse4))))) (fp.div c_currentRoundingMode (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~main__t~0 .cse3) (fp.sub c_currentRoundingMode .cse0 .cse3)))) (_ +zero 11 53)) (not (fp.leq c_ULTIMATE.start_main_~main__t~0 |c_ULTIMATE.start_main_#t~mem10|))) (fp.geq c_ULTIMATE.start_main_~main__t~0 .cse2) (= (let ((.cse7 (select .cse8 |c_ULTIMATE.start_main_~#main__max~0.offset|))) (fp ((_ extract 31 31) .cse7) ((_ extract 30 23) .cse7) ((_ extract 22 0) .cse7))) ((_ to_fp 8 24) c_currentRoundingMode (_ bv10 32))) (= |c_ULTIMATE.start_main_~#main__max~0.offset| (_ bv0 32)) (= c_currentRoundingMode roundNearestTiesToEven) (= c_ULTIMATE.start_main_~main__i~0 (_ bv0 32))))) is different from true [2021-11-03 05:40:51,222 WARN L207 SmtUtils]: Spent 27.99 s on a formula simplification that was a NOOP. DAG size: 65 [2021-11-03 05:41:28,513 WARN L207 SmtUtils]: Spent 17.48 s on a formula simplification that was a NOOP. DAG size: 42 [2021-11-03 05:41:36,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:41:36,271 INFO L93 Difference]: Finished difference Result 40 states and 43 transitions. [2021-11-03 05:41:36,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-03 05:41:36,274 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.3) internal successors, (26), 19 states have internal predecessors, (26), 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 13 [2021-11-03 05:41:36,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:41:36,275 INFO L225 Difference]: With dead ends: 40 [2021-11-03 05:41:36,275 INFO L226 Difference]: Without dead ends: 35 [2021-11-03 05:41:36,277 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 16 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 150.1s TimeCoverageRelationStatistics Valid=75, Invalid=108, Unknown=37, NotChecked=592, Total=812 [2021-11-03 05:41:36,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-11-03 05:41:36,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 24. [2021-11-03 05:41:36,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 23 states have internal predecessors, (29), 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) [2021-11-03 05:41:36,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 29 transitions. [2021-11-03 05:41:36,283 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 29 transitions. Word has length 13 [2021-11-03 05:41:36,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:41:36,284 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 29 transitions. [2021-11-03 05:41:36,284 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.3) internal successors, (26), 19 states have internal predecessors, (26), 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) [2021-11-03 05:41:36,284 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 29 transitions. [2021-11-03 05:41:36,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-03 05:41:36,285 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:41:36,285 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:41:36,304 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2736e90a-3e8c-4381-8911-369fb52314f3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-03 05:41:36,488 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2736e90a-3e8c-4381-8911-369fb52314f3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:41:36,489 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:41:36,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:41:36,490 INFO L85 PathProgramCache]: Analyzing trace with hash -1710804433, now seen corresponding path program 1 times [2021-11-03 05:41:36,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:41:36,491 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1715055464] [2021-11-03 05:41:36,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:41:36,491 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:41:36,491 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2736e90a-3e8c-4381-8911-369fb52314f3/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:41:36,492 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2736e90a-3e8c-4381-8911-369fb52314f3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:41:36,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2736e90a-3e8c-4381-8911-369fb52314f3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-03 05:41:37,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:41:37,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-03 05:41:37,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:41:40,464 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-03 05:41:40,465 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 178 treesize of output 86 [2021-11-03 05:42:33,481 WARN L207 SmtUtils]: Spent 14.84 s on a formula simplification. DAG size of input: 39 DAG size of output: 30 [2021-11-03 05:43:15,139 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((ULTIMATE.start_main_~main__t~0 (_ FloatingPoint 8 24)) (v_arrayElimCell_8 (_ BitVec 32)) (v_arrayElimCell_7 (_ BitVec 32))) (let ((.cse0 (fp ((_ extract 31 31) v_arrayElimCell_8) ((_ extract 30 23) v_arrayElimCell_8) ((_ extract 22 0) v_arrayElimCell_8))) (.cse1 (fp ((_ extract 31 31) v_arrayElimCell_7) ((_ extract 30 23) v_arrayElimCell_7) ((_ extract 22 0) v_arrayElimCell_7)))) (and (= .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv5 32))) (= (fp.div c_currentRoundingMode (fp.sub c_currentRoundingMode ULTIMATE.start_main_~main__t~0 .cse0) (fp.sub c_currentRoundingMode .cse1 .cse0)) c_ULTIMATE.start_main_~main__z~0) (= .cse1 ((_ to_fp 8 24) c_currentRoundingMode (_ bv10 32))) (fp.geq ULTIMATE.start_main_~main__t~0 .cse0) (fp.leq ULTIMATE.start_main_~main__t~0 .cse1)))) (= c_currentRoundingMode roundNearestTiesToEven) (fp.geq ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~main__z~0) (_ +zero 11 53))) is different from false [2021-11-03 05:44:35,478 WARN L838 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_main_~main__t~0 (_ FloatingPoint 8 24)) (v_arrayElimCell_8 (_ BitVec 32)) (v_arrayElimCell_7 (_ BitVec 32))) (let ((.cse2 (fp ((_ extract 31 31) v_arrayElimCell_7) ((_ extract 30 23) v_arrayElimCell_7) ((_ extract 22 0) v_arrayElimCell_7))) (.cse0 (fp ((_ extract 31 31) v_arrayElimCell_8) ((_ extract 30 23) v_arrayElimCell_8) ((_ extract 22 0) v_arrayElimCell_8)))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.sub roundNearestTiesToEven ULTIMATE.start_main_~main__t~0 .cse0) (fp.sub roundNearestTiesToEven .cse2 .cse0))))) (and (= .cse0 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv5 32))) (not (fp.leq .cse1 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (fp.geq ULTIMATE.start_main_~main__t~0 .cse0) (fp.geq .cse1 (_ +zero 11 53)) (fp.leq ULTIMATE.start_main_~main__t~0 .cse2) (= .cse2 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv10 32))))))) is different from false [2021-11-03 05:44:37,510 WARN L860 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_main_~main__t~0 (_ FloatingPoint 8 24)) (v_arrayElimCell_8 (_ BitVec 32)) (v_arrayElimCell_7 (_ BitVec 32))) (let ((.cse2 (fp ((_ extract 31 31) v_arrayElimCell_7) ((_ extract 30 23) v_arrayElimCell_7) ((_ extract 22 0) v_arrayElimCell_7))) (.cse0 (fp ((_ extract 31 31) v_arrayElimCell_8) ((_ extract 30 23) v_arrayElimCell_8) ((_ extract 22 0) v_arrayElimCell_8)))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.sub roundNearestTiesToEven ULTIMATE.start_main_~main__t~0 .cse0) (fp.sub roundNearestTiesToEven .cse2 .cse0))))) (and (= .cse0 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv5 32))) (not (fp.leq .cse1 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (fp.geq ULTIMATE.start_main_~main__t~0 .cse0) (fp.geq .cse1 (_ +zero 11 53)) (fp.leq ULTIMATE.start_main_~main__t~0 .cse2) (= .cse2 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv10 32))))))) is different from true [2021-11-03 05:45:52,976 WARN L838 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_main_~main__t~0 (_ FloatingPoint 8 24)) (v_arrayElimCell_8 (_ BitVec 32)) (v_arrayElimCell_7 (_ BitVec 32))) (let ((.cse2 (fp ((_ extract 31 31) v_arrayElimCell_7) ((_ extract 30 23) v_arrayElimCell_7) ((_ extract 22 0) v_arrayElimCell_7))) (.cse0 (fp ((_ extract 31 31) v_arrayElimCell_8) ((_ extract 30 23) v_arrayElimCell_8) ((_ extract 22 0) v_arrayElimCell_8)))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.sub roundNearestTiesToEven ULTIMATE.start_main_~main__t~0 .cse0) (fp.sub roundNearestTiesToEven .cse2 .cse0))))) (and (= .cse0 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv5 32))) (not (fp.leq .cse1 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (fp.geq .cse1 (_ +zero 11 53)) (fp.leq ULTIMATE.start_main_~main__t~0 .cse2) (= .cse2 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv10 32))))))) is different from false [2021-11-03 05:45:55,005 WARN L860 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_main_~main__t~0 (_ FloatingPoint 8 24)) (v_arrayElimCell_8 (_ BitVec 32)) (v_arrayElimCell_7 (_ BitVec 32))) (let ((.cse2 (fp ((_ extract 31 31) v_arrayElimCell_7) ((_ extract 30 23) v_arrayElimCell_7) ((_ extract 22 0) v_arrayElimCell_7))) (.cse0 (fp ((_ extract 31 31) v_arrayElimCell_8) ((_ extract 30 23) v_arrayElimCell_8) ((_ extract 22 0) v_arrayElimCell_8)))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.sub roundNearestTiesToEven ULTIMATE.start_main_~main__t~0 .cse0) (fp.sub roundNearestTiesToEven .cse2 .cse0))))) (and (= .cse0 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv5 32))) (not (fp.leq .cse1 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (fp.geq .cse1 (_ +zero 11 53)) (fp.leq ULTIMATE.start_main_~main__t~0 .cse2) (= .cse2 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv10 32))))))) is different from true