./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cdfpl/square_8.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc1ca80-cc1c-4ee6-85d8-0d7a2105b9c0/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc1ca80-cc1c-4ee6-85d8-0d7a2105b9c0/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc1ca80-cc1c-4ee6-85d8-0d7a2105b9c0/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc1ca80-cc1c-4ee6-85d8-0d7a2105b9c0/bin/uautomizer-j4sWxH34Be/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/square_8.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc1ca80-cc1c-4ee6-85d8-0d7a2105b9c0/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc1ca80-cc1c-4ee6-85d8-0d7a2105b9c0/bin/uautomizer-j4sWxH34Be --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4c70b0c293d1f910083607d5ace0bd3396d2851476b1225436bb619abd3bfcaf ................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc1ca80-cc1c-4ee6-85d8-0d7a2105b9c0/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc1ca80-cc1c-4ee6-85d8-0d7a2105b9c0/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc1ca80-cc1c-4ee6-85d8-0d7a2105b9c0/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc1ca80-cc1c-4ee6-85d8-0d7a2105b9c0/bin/uautomizer-j4sWxH34Be/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/square_8.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc1ca80-cc1c-4ee6-85d8-0d7a2105b9c0/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc1ca80-cc1c-4ee6-85d8-0d7a2105b9c0/bin/uautomizer-j4sWxH34Be --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4c70b0c293d1f910083607d5ace0bd3396d2851476b1225436bb619abd3bfcaf ........................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-21 20:30:34,485 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 20:30:34,487 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 20:30:34,529 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 20:30:34,529 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 20:30:34,534 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 20:30:34,536 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 20:30:34,540 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 20:30:34,542 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 20:30:34,550 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 20:30:34,551 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 20:30:34,553 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 20:30:34,553 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 20:30:34,556 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 20:30:34,559 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 20:30:34,564 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 20:30:34,565 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 20:30:34,567 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 20:30:34,569 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 20:30:34,576 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 20:30:34,578 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 20:30:34,579 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 20:30:34,583 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 20:30:34,584 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 20:30:34,587 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 20:30:34,588 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 20:30:34,588 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 20:30:34,590 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 20:30:34,591 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 20:30:34,592 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 20:30:34,593 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 20:30:34,594 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 20:30:34,595 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 20:30:34,597 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 20:30:34,598 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 20:30:34,598 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 20:30:34,599 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 20:30:34,599 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 20:30:34,599 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 20:30:34,600 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 20:30:34,601 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 20:30:34,602 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc1ca80-cc1c-4ee6-85d8-0d7a2105b9c0/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-21 20:30:34,645 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 20:30:34,645 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 20:30:34,646 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 20:30:34,646 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 20:30:34,653 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 20:30:34,653 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 20:30:34,654 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 20:30:34,654 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 20:30:34,654 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 20:30:34,654 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 20:30:34,654 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 20:30:34,654 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 20:30:34,654 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-21 20:30:34,655 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 20:30:34,655 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-21 20:30:34,655 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 20:30:34,655 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 20:30:34,655 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 20:30:34,655 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-21 20:30:34,655 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 20:30:34,655 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 20:30:34,655 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 20:30:34,656 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 20:30:34,656 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 20:30:34,656 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 20:30:34,656 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-21 20:30:34,656 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 20:30:34,656 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-21 20:30:34,656 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-21 20:30:34,657 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-21 20:30:34,657 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-21 20:30:34,657 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 20:30:34,657 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_1dc1ca80-cc1c-4ee6-85d8-0d7a2105b9c0/bin/uautomizer-j4sWxH34Be/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc1ca80-cc1c-4ee6-85d8-0d7a2105b9c0/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4c70b0c293d1f910083607d5ace0bd3396d2851476b1225436bb619abd3bfcaf [2021-10-21 20:30:34,904 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 20:30:34,928 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 20:30:34,931 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 20:30:34,932 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 20:30:34,933 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 20:30:34,934 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc1ca80-cc1c-4ee6-85d8-0d7a2105b9c0/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/floats-cdfpl/square_8.i [2021-10-21 20:30:34,994 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc1ca80-cc1c-4ee6-85d8-0d7a2105b9c0/bin/uautomizer-j4sWxH34Be/data/909c35512/57262b07e9854ffdac36d00bc5de94b1/FLAG5fa3cf8b2 [2021-10-21 20:30:35,485 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 20:30:35,485 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc1ca80-cc1c-4ee6-85d8-0d7a2105b9c0/sv-benchmarks/c/floats-cdfpl/square_8.i [2021-10-21 20:30:35,491 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc1ca80-cc1c-4ee6-85d8-0d7a2105b9c0/bin/uautomizer-j4sWxH34Be/data/909c35512/57262b07e9854ffdac36d00bc5de94b1/FLAG5fa3cf8b2 [2021-10-21 20:30:35,876 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc1ca80-cc1c-4ee6-85d8-0d7a2105b9c0/bin/uautomizer-j4sWxH34Be/data/909c35512/57262b07e9854ffdac36d00bc5de94b1 [2021-10-21 20:30:35,880 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 20:30:35,881 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 20:30:35,888 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 20:30:35,888 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 20:30:35,891 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 20:30:35,892 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:30:35" (1/1) ... [2021-10-21 20:30:35,893 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5897ef49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:30:35, skipping insertion in model container [2021-10-21 20:30:35,893 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:30:35" (1/1) ... [2021-10-21 20:30:35,908 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 20:30:35,920 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 20:30:36,076 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_1dc1ca80-cc1c-4ee6-85d8-0d7a2105b9c0/sv-benchmarks/c/floats-cdfpl/square_8.i[1127,1140] [2021-10-21 20:30:36,089 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:30:36,101 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 20:30:36,120 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_1dc1ca80-cc1c-4ee6-85d8-0d7a2105b9c0/sv-benchmarks/c/floats-cdfpl/square_8.i[1127,1140] [2021-10-21 20:30:36,121 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:30:36,134 INFO L208 MainTranslator]: Completed translation [2021-10-21 20:30:36,135 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:30:36 WrapperNode [2021-10-21 20:30:36,135 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 20:30:36,136 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 20:30:36,136 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 20:30:36,137 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 20:30:36,143 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:30:36" (1/1) ... [2021-10-21 20:30:36,148 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:30:36" (1/1) ... [2021-10-21 20:30:36,163 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 20:30:36,164 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 20:30:36,165 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 20:30:36,165 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 20:30:36,172 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:30:36" (1/1) ... [2021-10-21 20:30:36,173 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:30:36" (1/1) ... [2021-10-21 20:30:36,174 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:30:36" (1/1) ... [2021-10-21 20:30:36,174 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:30:36" (1/1) ... [2021-10-21 20:30:36,178 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:30:36" (1/1) ... [2021-10-21 20:30:36,180 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:30:36" (1/1) ... [2021-10-21 20:30:36,180 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:30:36" (1/1) ... [2021-10-21 20:30:36,182 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 20:30:36,183 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 20:30:36,183 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 20:30:36,183 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 20:30:36,184 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:30:36" (1/1) ... [2021-10-21 20:30:36,192 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 20:30:36,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc1ca80-cc1c-4ee6-85d8-0d7a2105b9c0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:30:36,210 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc1ca80-cc1c-4ee6-85d8-0d7a2105b9c0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 20:30:36,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc1ca80-cc1c-4ee6-85d8-0d7a2105b9c0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 20:30:36,257 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-21 20:30:36,257 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 20:30:36,258 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 20:30:36,258 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 20:30:36,410 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 20:30:36,411 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-10-21 20:30:36,412 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:30:36 BoogieIcfgContainer [2021-10-21 20:30:36,413 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 20:30:36,415 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 20:30:36,415 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 20:30:36,431 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 20:30:36,432 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 08:30:35" (1/3) ... [2021-10-21 20:30:36,432 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@145e193f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 08:30:36, skipping insertion in model container [2021-10-21 20:30:36,433 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:30:36" (2/3) ... [2021-10-21 20:30:36,433 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@145e193f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 08:30:36, skipping insertion in model container [2021-10-21 20:30:36,433 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:30:36" (3/3) ... [2021-10-21 20:30:36,434 INFO L111 eAbstractionObserver]: Analyzing ICFG square_8.i [2021-10-21 20:30:36,440 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 20:30:36,440 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-21 20:30:36,543 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 20:30:36,550 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=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-21 20:30:36,550 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-21 20:30:36,563 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 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) [2021-10-21 20:30:36,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-21 20:30:36,568 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:30:36,568 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-21 20:30:36,569 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:30:36,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:30:36,574 INFO L82 PathProgramCache]: Analyzing trace with hash 889508712, now seen corresponding path program 1 times [2021-10-21 20:30:36,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:30:36,584 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039456199] [2021-10-21 20:30:36,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:30:36,585 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:30:36,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:30:36,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:30:36,797 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:30:36,798 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039456199] [2021-10-21 20:30:36,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039456199] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:30:36,800 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:30:36,800 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-21 20:30:36,811 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810990257] [2021-10-21 20:30:36,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-21 20:30:36,817 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:30:36,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-21 20:30:36,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-21 20:30:36,847 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 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) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:30:36,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:30:36,862 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2021-10-21 20:30:36,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-21 20:30:36,864 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-21 20:30:36,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:30:36,870 INFO L225 Difference]: With dead ends: 19 [2021-10-21 20:30:36,870 INFO L226 Difference]: Without dead ends: 7 [2021-10-21 20:30:36,873 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-21 20:30:36,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2021-10-21 20:30:36,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2021-10-21 20:30:36,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.0) internal successors, (6), 6 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:30:36,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6 transitions. [2021-10-21 20:30:36,898 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 6 transitions. Word has length 6 [2021-10-21 20:30:36,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:30:36,898 INFO L470 AbstractCegarLoop]: Abstraction has 7 states and 6 transitions. [2021-10-21 20:30:36,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:30:36,898 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2021-10-21 20:30:36,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-21 20:30:36,899 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:30:36,899 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-21 20:30:36,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-21 20:30:36,900 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:30:36,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:30:36,901 INFO L82 PathProgramCache]: Analyzing trace with hash 889568294, now seen corresponding path program 1 times [2021-10-21 20:30:36,901 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:30:36,901 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98544475] [2021-10-21 20:30:36,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:30:36,902 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:30:36,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:30:36,926 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:30:36,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:30:36,964 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 20:30:36,965 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-21 20:30:36,967 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 20:30:36,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-21 20:30:36,976 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 20:30:36,997 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 08:30:36 BoogieIcfgContainer [2021-10-21 20:30:36,998 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 20:30:36,998 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 20:30:36,999 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 20:30:36,999 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 20:30:36,999 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:30:36" (3/4) ... [2021-10-21 20:30:37,003 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-21 20:30:37,003 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 20:30:37,006 INFO L168 Benchmark]: Toolchain (without parser) took 1122.47 ms. Allocated memory is still 111.1 MB. Free memory was 73.3 MB in the beginning and 52.9 MB in the end (delta: 20.5 MB). Peak memory consumption was 18.6 MB. Max. memory is 16.1 GB. [2021-10-21 20:30:37,007 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 111.1 MB. Free memory was 90.0 MB in the beginning and 89.9 MB in the end (delta: 117.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:30:37,008 INFO L168 Benchmark]: CACSL2BoogieTranslator took 247.41 ms. Allocated memory is still 111.1 MB. Free memory was 73.2 MB in the beginning and 85.8 MB in the end (delta: -12.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-21 20:30:37,009 INFO L168 Benchmark]: Boogie Procedure Inliner took 27.54 ms. Allocated memory is still 111.1 MB. Free memory was 85.8 MB in the beginning and 84.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 20:30:37,009 INFO L168 Benchmark]: Boogie Preprocessor took 17.98 ms. Allocated memory is still 111.1 MB. Free memory was 84.3 MB in the beginning and 83.3 MB in the end (delta: 994.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:30:37,010 INFO L168 Benchmark]: RCFGBuilder took 229.76 ms. Allocated memory is still 111.1 MB. Free memory was 83.3 MB in the beginning and 75.0 MB in the end (delta: 8.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-21 20:30:37,011 INFO L168 Benchmark]: TraceAbstraction took 583.15 ms. Allocated memory is still 111.1 MB. Free memory was 74.4 MB in the beginning and 53.4 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2021-10-21 20:30:37,012 INFO L168 Benchmark]: Witness Printer took 4.85 ms. Allocated memory is still 111.1 MB. Free memory was 53.4 MB in the beginning and 52.9 MB in the end (delta: 550.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:30:37,016 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 111.1 MB. Free memory was 90.0 MB in the beginning and 89.9 MB in the end (delta: 117.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 247.41 ms. Allocated memory is still 111.1 MB. Free memory was 73.2 MB in the beginning and 85.8 MB in the end (delta: -12.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 27.54 ms. Allocated memory is still 111.1 MB. Free memory was 85.8 MB in the beginning and 84.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 17.98 ms. Allocated memory is still 111.1 MB. Free memory was 84.3 MB in the beginning and 83.3 MB in the end (delta: 994.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 229.76 ms. Allocated memory is still 111.1 MB. Free memory was 83.3 MB in the beginning and 75.0 MB in the end (delta: 8.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 583.15 ms. Allocated memory is still 111.1 MB. Free memory was 74.4 MB in the beginning and 53.4 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * Witness Printer took 4.85 ms. Allocated memory is still 111.1 MB. Free memory was 53.4 MB in the beginning and 52.9 MB in the end (delta: 550.5 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, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 29]: 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 28, overapproximation of someBinaryArithmeticFLOAToperation at line 26. Possible FailurePath: [L20] float IN = __VERIFIER_nondet_float(); [L15] COND FALSE !(!cond) [L23] float x = IN; [L25-L26] float result = 1.0f + 0.5f*x - 0.125f*x*x + 0.0625f*x*x*x - 0.0390625f*x*x*x*x; [L28] COND TRUE !(result >= 0.0f && result < 1.5f) [L29] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 432.7ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 8.5ms, AutomataDifference: 55.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 9.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 10 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 13.2ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 18.3ms SsaConstructionTime, 51.3ms SatisfiabilityAnalysisTime, 63.5ms InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 5 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 [2021-10-21 20:30:37,056 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc1ca80-cc1c-4ee6-85d8-0d7a2105b9c0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-e943c26 [2021-10-21 20:30:39,466 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 20:30:39,470 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 20:30:39,531 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 20:30:39,531 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 20:30:39,536 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 20:30:39,538 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 20:30:39,545 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 20:30:39,548 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 20:30:39,556 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 20:30:39,557 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 20:30:39,559 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 20:30:39,559 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 20:30:39,562 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 20:30:39,564 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 20:30:39,570 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 20:30:39,572 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 20:30:39,573 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 20:30:39,583 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 20:30:39,593 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 20:30:39,595 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 20:30:39,597 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 20:30:39,600 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 20:30:39,603 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 20:30:39,607 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 20:30:39,607 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 20:30:39,608 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 20:30:39,610 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 20:30:39,611 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 20:30:39,612 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 20:30:39,612 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 20:30:39,613 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 20:30:39,615 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 20:30:39,616 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 20:30:39,618 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 20:30:39,618 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 20:30:39,619 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 20:30:39,619 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 20:30:39,620 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 20:30:39,622 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 20:30:39,623 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 20:30:39,624 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc1ca80-cc1c-4ee6-85d8-0d7a2105b9c0/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-10-21 20:30:39,674 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 20:30:39,675 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 20:30:39,675 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 20:30:39,676 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 20:30:39,678 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 20:30:39,678 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 20:30:39,678 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 20:30:39,679 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 20:30:39,679 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 20:30:39,679 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 20:30:39,680 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 20:30:39,681 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-21 20:30:39,681 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 20:30:39,681 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-21 20:30:39,681 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-21 20:30:39,681 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-21 20:30:39,682 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 20:30:39,682 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 20:30:39,682 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 20:30:39,682 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-21 20:30:39,683 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 20:30:39,683 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 20:30:39,683 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 20:30:39,683 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 20:30:39,684 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 20:30:39,684 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 20:30:39,684 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-21 20:30:39,684 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-21 20:30:39,684 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-21 20:30:39,685 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-21 20:30:39,685 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-21 20:30:39,685 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-21 20:30:39,686 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 20:30:39,686 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-21 20:30:39,686 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_1dc1ca80-cc1c-4ee6-85d8-0d7a2105b9c0/bin/uautomizer-j4sWxH34Be/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc1ca80-cc1c-4ee6-85d8-0d7a2105b9c0/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4c70b0c293d1f910083607d5ace0bd3396d2851476b1225436bb619abd3bfcaf [2021-10-21 20:30:40,046 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 20:30:40,074 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 20:30:40,077 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 20:30:40,079 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 20:30:40,079 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 20:30:40,080 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc1ca80-cc1c-4ee6-85d8-0d7a2105b9c0/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/floats-cdfpl/square_8.i [2021-10-21 20:30:40,165 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc1ca80-cc1c-4ee6-85d8-0d7a2105b9c0/bin/uautomizer-j4sWxH34Be/data/2908bb30b/e602d8d2ef604df194358fa294836a6e/FLAGe5b0125f8 [2021-10-21 20:30:40,752 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 20:30:40,753 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc1ca80-cc1c-4ee6-85d8-0d7a2105b9c0/sv-benchmarks/c/floats-cdfpl/square_8.i [2021-10-21 20:30:40,760 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc1ca80-cc1c-4ee6-85d8-0d7a2105b9c0/bin/uautomizer-j4sWxH34Be/data/2908bb30b/e602d8d2ef604df194358fa294836a6e/FLAGe5b0125f8 [2021-10-21 20:30:41,133 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc1ca80-cc1c-4ee6-85d8-0d7a2105b9c0/bin/uautomizer-j4sWxH34Be/data/2908bb30b/e602d8d2ef604df194358fa294836a6e [2021-10-21 20:30:41,143 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 20:30:41,144 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 20:30:41,145 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 20:30:41,145 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 20:30:41,150 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 20:30:41,151 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:30:41" (1/1) ... [2021-10-21 20:30:41,153 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46e445bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:30:41, skipping insertion in model container [2021-10-21 20:30:41,153 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:30:41" (1/1) ... [2021-10-21 20:30:41,161 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 20:30:41,178 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 20:30:41,329 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_1dc1ca80-cc1c-4ee6-85d8-0d7a2105b9c0/sv-benchmarks/c/floats-cdfpl/square_8.i[1127,1140] [2021-10-21 20:30:41,336 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:30:41,351 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 20:30:41,402 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_1dc1ca80-cc1c-4ee6-85d8-0d7a2105b9c0/sv-benchmarks/c/floats-cdfpl/square_8.i[1127,1140] [2021-10-21 20:30:41,404 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:30:41,425 INFO L208 MainTranslator]: Completed translation [2021-10-21 20:30:41,425 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:30:41 WrapperNode [2021-10-21 20:30:41,426 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 20:30:41,427 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 20:30:41,427 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 20:30:41,427 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 20:30:41,435 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:30:41" (1/1) ... [2021-10-21 20:30:41,455 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:30:41" (1/1) ... [2021-10-21 20:30:41,474 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 20:30:41,475 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 20:30:41,475 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 20:30:41,476 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 20:30:41,484 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:30:41" (1/1) ... [2021-10-21 20:30:41,484 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:30:41" (1/1) ... [2021-10-21 20:30:41,489 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:30:41" (1/1) ... [2021-10-21 20:30:41,490 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:30:41" (1/1) ... [2021-10-21 20:30:41,512 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:30:41" (1/1) ... [2021-10-21 20:30:41,514 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:30:41" (1/1) ... [2021-10-21 20:30:41,517 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:30:41" (1/1) ... [2021-10-21 20:30:41,520 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 20:30:41,523 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 20:30:41,524 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 20:30:41,525 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 20:30:41,526 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:30:41" (1/1) ... [2021-10-21 20:30:41,533 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 20:30:41,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc1ca80-cc1c-4ee6-85d8-0d7a2105b9c0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:30:41,558 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc1ca80-cc1c-4ee6-85d8-0d7a2105b9c0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 20:30:41,588 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc1ca80-cc1c-4ee6-85d8-0d7a2105b9c0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 20:30:41,607 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-21 20:30:41,608 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 20:30:41,608 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 20:30:41,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 20:30:43,915 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 20:30:43,915 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-10-21 20:30:43,917 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:30:43 BoogieIcfgContainer [2021-10-21 20:30:43,917 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 20:30:43,919 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 20:30:43,919 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 20:30:43,922 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 20:30:43,923 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 08:30:41" (1/3) ... [2021-10-21 20:30:43,923 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38f4d314 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 08:30:43, skipping insertion in model container [2021-10-21 20:30:43,924 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:30:41" (2/3) ... [2021-10-21 20:30:43,924 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38f4d314 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 08:30:43, skipping insertion in model container [2021-10-21 20:30:43,924 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:30:43" (3/3) ... [2021-10-21 20:30:43,926 INFO L111 eAbstractionObserver]: Analyzing ICFG square_8.i [2021-10-21 20:30:43,931 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 20:30:43,931 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-21 20:30:43,979 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 20:30:43,986 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=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-21 20:30:43,987 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-21 20:30:44,000 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 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) [2021-10-21 20:30:44,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-21 20:30:44,005 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:30:44,006 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-21 20:30:44,006 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:30:44,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:30:44,012 INFO L82 PathProgramCache]: Analyzing trace with hash 889508712, now seen corresponding path program 1 times [2021-10-21 20:30:44,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:30:44,024 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [355323523] [2021-10-21 20:30:44,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:30:44,026 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:30:44,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc1ca80-cc1c-4ee6-85d8-0d7a2105b9c0/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:30:44,036 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc1ca80-cc1c-4ee6-85d8-0d7a2105b9c0/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:30:44,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc1ca80-cc1c-4ee6-85d8-0d7a2105b9c0/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-21 20:30:44,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:30:44,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-21 20:30:44,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:30:44,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:30:44,662 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:30:44,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:30:44,692 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:30:44,692 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [355323523] [2021-10-21 20:30:44,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [355323523] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 20:30:44,693 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:30:44,693 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-21 20:30:44,695 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255698583] [2021-10-21 20:30:44,700 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-21 20:30:44,700 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:30:44,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-21 20:30:44,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-21 20:30:44,716 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 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) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:30:44,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:30:44,729 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2021-10-21 20:30:44,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-21 20:30:44,731 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-21 20:30:44,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:30:44,739 INFO L225 Difference]: With dead ends: 19 [2021-10-21 20:30:44,739 INFO L226 Difference]: Without dead ends: 7 [2021-10-21 20:30:44,741 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-21 20:30:44,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2021-10-21 20:30:44,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2021-10-21 20:30:44,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.0) internal successors, (6), 6 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:30:44,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6 transitions. [2021-10-21 20:30:44,770 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 6 transitions. Word has length 6 [2021-10-21 20:30:44,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:30:44,771 INFO L470 AbstractCegarLoop]: Abstraction has 7 states and 6 transitions. [2021-10-21 20:30:44,771 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:30:44,771 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2021-10-21 20:30:44,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-21 20:30:44,772 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:30:44,772 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-21 20:30:44,794 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc1ca80-cc1c-4ee6-85d8-0d7a2105b9c0/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-21 20:30:44,989 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc1ca80-cc1c-4ee6-85d8-0d7a2105b9c0/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:30:44,989 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:30:44,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:30:44,990 INFO L82 PathProgramCache]: Analyzing trace with hash 889568294, now seen corresponding path program 1 times [2021-10-21 20:30:44,991 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:30:44,991 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [237316368] [2021-10-21 20:30:44,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:30:44,991 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:30:44,992 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc1ca80-cc1c-4ee6-85d8-0d7a2105b9c0/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:30:44,993 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc1ca80-cc1c-4ee6-85d8-0d7a2105b9c0/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:30:44,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc1ca80-cc1c-4ee6-85d8-0d7a2105b9c0/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-21 20:31:33,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:31:33,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-21 20:31:33,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:31:48,778 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((ULTIMATE.start_main_~IN~0 (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (and (fp.geq ULTIMATE.start_main_~IN~0 (_ +zero 8 24)) (fp.lt ULTIMATE.start_main_~IN~0 .cse0) (= (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode .cse0 (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) ULTIMATE.start_main_~IN~0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) ULTIMATE.start_main_~IN~0) ULTIMATE.start_main_~IN~0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) ULTIMATE.start_main_~IN~0) ULTIMATE.start_main_~IN~0) ULTIMATE.start_main_~IN~0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) ULTIMATE.start_main_~IN~0) ULTIMATE.start_main_~IN~0) ULTIMATE.start_main_~IN~0) ULTIMATE.start_main_~IN~0)) c_ULTIMATE.start_main_~result~0)))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-10-21 20:32:38,272 WARN L838 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_main_~IN~0 (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven 1.0))) (and (fp.geq ULTIMATE.start_main_~IN~0 (_ +zero 8 24)) (let ((.cse0 (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse1 (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 2.0)) ULTIMATE.start_main_~IN~0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 8.0)) ULTIMATE.start_main_~IN~0) ULTIMATE.start_main_~IN~0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 16.0)) ULTIMATE.start_main_~IN~0) ULTIMATE.start_main_~IN~0) ULTIMATE.start_main_~IN~0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 128.0)) ULTIMATE.start_main_~IN~0) ULTIMATE.start_main_~IN~0) ULTIMATE.start_main_~IN~0) ULTIMATE.start_main_~IN~0)))) (or (not (fp.geq .cse0 (_ +zero 8 24))) (not (fp.lt .cse0 ((_ to_fp 8 24) roundNearestTiesToEven (/ 3.0 2.0)))))) (fp.lt ULTIMATE.start_main_~IN~0 .cse1)))) is different from false [2021-10-21 20:32:40,313 WARN L860 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_main_~IN~0 (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven 1.0))) (and (fp.geq ULTIMATE.start_main_~IN~0 (_ +zero 8 24)) (let ((.cse0 (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse1 (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 2.0)) ULTIMATE.start_main_~IN~0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 8.0)) ULTIMATE.start_main_~IN~0) ULTIMATE.start_main_~IN~0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 16.0)) ULTIMATE.start_main_~IN~0) ULTIMATE.start_main_~IN~0) ULTIMATE.start_main_~IN~0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 128.0)) ULTIMATE.start_main_~IN~0) ULTIMATE.start_main_~IN~0) ULTIMATE.start_main_~IN~0) ULTIMATE.start_main_~IN~0)))) (or (not (fp.geq .cse0 (_ +zero 8 24))) (not (fp.lt .cse0 ((_ to_fp 8 24) roundNearestTiesToEven (/ 3.0 2.0)))))) (fp.lt ULTIMATE.start_main_~IN~0 .cse1)))) is different from true [2021-10-21 20:32:40,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:32:40,314 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:32:50,923 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) c_ULTIMATE.start_main_~IN~0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0)))) (and (fp.lt .cse0 ((_ to_fp 8 24) c_currentRoundingMode (/ 3.0 2.0))) (fp.geq .cse0 (_ +zero 8 24)))) is different from false [2021-10-21 20:32:52,987 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) c_ULTIMATE.start_main_~IN~0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0)))) (and (fp.lt .cse0 ((_ to_fp 8 24) c_currentRoundingMode (/ 3.0 2.0))) (fp.geq .cse0 (_ +zero 8 24)))) is different from true [2021-10-21 20:33:07,729 WARN L838 $PredicateComparison]: unable to prove that (or (let ((.cse0 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) c_ULTIMATE.start_main_~IN~0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0)))) (and (fp.lt .cse0 ((_ to_fp 8 24) c_currentRoundingMode (/ 3.0 2.0))) (fp.geq .cse0 (_ +zero 8 24)))) (= c_ULTIMATE.start_assume_abort_if_not_~cond (_ bv0 32))) is different from false [2021-10-21 20:33:09,802 WARN L860 $PredicateComparison]: unable to prove that (or (let ((.cse0 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) c_ULTIMATE.start_main_~IN~0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0)))) (and (fp.lt .cse0 ((_ to_fp 8 24) c_currentRoundingMode (/ 3.0 2.0))) (fp.geq .cse0 (_ +zero 8 24)))) (= c_ULTIMATE.start_assume_abort_if_not_~cond (_ bv0 32))) is different from true [2021-10-21 20:33:53,904 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~IN~0_5 (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (or (not (fp.lt v_ULTIMATE.start_main_~IN~0_5 .cse0)) (let ((.cse1 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode .cse0 (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) v_ULTIMATE.start_main_~IN~0_5)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) v_ULTIMATE.start_main_~IN~0_5) v_ULTIMATE.start_main_~IN~0_5)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) v_ULTIMATE.start_main_~IN~0_5) v_ULTIMATE.start_main_~IN~0_5) v_ULTIMATE.start_main_~IN~0_5)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) v_ULTIMATE.start_main_~IN~0_5) v_ULTIMATE.start_main_~IN~0_5) v_ULTIMATE.start_main_~IN~0_5) v_ULTIMATE.start_main_~IN~0_5)))) (and (fp.geq .cse1 (_ +zero 8 24)) (fp.lt .cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 3.0 2.0))))) (not (fp.geq v_ULTIMATE.start_main_~IN~0_5 (_ +zero 8 24)))))) is different from false [2021-10-21 20:33:55,971 WARN L860 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~IN~0_5 (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (or (not (fp.lt v_ULTIMATE.start_main_~IN~0_5 .cse0)) (let ((.cse1 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode .cse0 (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) v_ULTIMATE.start_main_~IN~0_5)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) v_ULTIMATE.start_main_~IN~0_5) v_ULTIMATE.start_main_~IN~0_5)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) v_ULTIMATE.start_main_~IN~0_5) v_ULTIMATE.start_main_~IN~0_5) v_ULTIMATE.start_main_~IN~0_5)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) v_ULTIMATE.start_main_~IN~0_5) v_ULTIMATE.start_main_~IN~0_5) v_ULTIMATE.start_main_~IN~0_5) v_ULTIMATE.start_main_~IN~0_5)))) (and (fp.geq .cse1 (_ +zero 8 24)) (fp.lt .cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 3.0 2.0))))) (not (fp.geq v_ULTIMATE.start_main_~IN~0_5 (_ +zero 8 24)))))) is different from true [2021-10-21 20:33:55,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:33:55,971 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:33:55,972 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [237316368] [2021-10-21 20:33:55,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [237316368] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 20:33:55,972 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:33:55,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 10 [2021-10-21 20:33:55,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177832001] [2021-10-21 20:33:55,974 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-21 20:33:55,974 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:33:55,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-21 20:33:55,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=20, Unknown=9, NotChecked=60, Total=110 [2021-10-21 20:33:55,976 INFO L87 Difference]: Start difference. First operand 7 states and 6 transitions. Second operand has 11 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 10 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) [2021-10-21 20:33:58,044 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ULTIMATE.start_main_~IN~0_5 (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (or (not (fp.lt v_ULTIMATE.start_main_~IN~0_5 .cse0)) (let ((.cse1 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode .cse0 (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) v_ULTIMATE.start_main_~IN~0_5)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) v_ULTIMATE.start_main_~IN~0_5) v_ULTIMATE.start_main_~IN~0_5)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) v_ULTIMATE.start_main_~IN~0_5) v_ULTIMATE.start_main_~IN~0_5) v_ULTIMATE.start_main_~IN~0_5)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) v_ULTIMATE.start_main_~IN~0_5) v_ULTIMATE.start_main_~IN~0_5) v_ULTIMATE.start_main_~IN~0_5) v_ULTIMATE.start_main_~IN~0_5)))) (and (fp.geq .cse1 (_ +zero 8 24)) (fp.lt .cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 3.0 2.0))))) (not (fp.geq v_ULTIMATE.start_main_~IN~0_5 (_ +zero 8 24)))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-10-21 20:34:00,111 WARN L860 $PredicateComparison]: unable to prove that (and (forall ((v_ULTIMATE.start_main_~IN~0_5 (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (or (not (fp.lt v_ULTIMATE.start_main_~IN~0_5 .cse0)) (let ((.cse1 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode .cse0 (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) v_ULTIMATE.start_main_~IN~0_5)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) v_ULTIMATE.start_main_~IN~0_5) v_ULTIMATE.start_main_~IN~0_5)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) v_ULTIMATE.start_main_~IN~0_5) v_ULTIMATE.start_main_~IN~0_5) v_ULTIMATE.start_main_~IN~0_5)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) v_ULTIMATE.start_main_~IN~0_5) v_ULTIMATE.start_main_~IN~0_5) v_ULTIMATE.start_main_~IN~0_5) v_ULTIMATE.start_main_~IN~0_5)))) (and (fp.geq .cse1 (_ +zero 8 24)) (fp.lt .cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 3.0 2.0))))) (not (fp.geq v_ULTIMATE.start_main_~IN~0_5 (_ +zero 8 24)))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-10-21 20:34:02,174 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse3 ((_ to_fp 8 24) c_currentRoundingMode 1.0)) (.cse2 (= c_ULTIMATE.start_assume_abort_if_not_~cond (_ bv0 32)))) (and (let ((.cse0 (fp.geq c_ULTIMATE.start_main_~IN~0 (_ +zero 8 24))) (.cse1 (fp.lt c_ULTIMATE.start_main_~IN~0 .cse3))) (or (and .cse0 (= c_ULTIMATE.start_assume_abort_if_not_~cond (_ bv1 32)) .cse1) (and (or (not .cse0) (not .cse1)) .cse2))) (or (let ((.cse4 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode .cse3 (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) c_ULTIMATE.start_main_~IN~0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0)))) (and (fp.lt .cse4 ((_ to_fp 8 24) c_currentRoundingMode (/ 3.0 2.0))) (fp.geq .cse4 (_ +zero 8 24)))) .cse2) (= c_currentRoundingMode roundNearestTiesToEven))) is different from false [2021-10-21 20:34:04,241 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse3 ((_ to_fp 8 24) c_currentRoundingMode 1.0)) (.cse2 (= c_ULTIMATE.start_assume_abort_if_not_~cond (_ bv0 32)))) (and (let ((.cse0 (fp.geq c_ULTIMATE.start_main_~IN~0 (_ +zero 8 24))) (.cse1 (fp.lt c_ULTIMATE.start_main_~IN~0 .cse3))) (or (and .cse0 (= c_ULTIMATE.start_assume_abort_if_not_~cond (_ bv1 32)) .cse1) (and (or (not .cse0) (not .cse1)) .cse2))) (or (let ((.cse4 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode .cse3 (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) c_ULTIMATE.start_main_~IN~0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0)))) (and (fp.lt .cse4 ((_ to_fp 8 24) c_currentRoundingMode (/ 3.0 2.0))) (fp.geq .cse4 (_ +zero 8 24)))) .cse2) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-10-21 20:34:06,309 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (let ((.cse0 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode .cse1 (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) c_ULTIMATE.start_main_~IN~0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0)))) (and (fp.geq c_ULTIMATE.start_main_~IN~0 (_ +zero 8 24)) (fp.lt .cse0 ((_ to_fp 8 24) c_currentRoundingMode (/ 3.0 2.0))) (fp.lt c_ULTIMATE.start_main_~IN~0 .cse1) (fp.geq .cse0 (_ +zero 8 24)) (= c_currentRoundingMode roundNearestTiesToEven)))) is different from false [2021-10-21 20:34:08,377 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (let ((.cse0 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode .cse1 (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) c_ULTIMATE.start_main_~IN~0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0) c_ULTIMATE.start_main_~IN~0)))) (and (fp.geq c_ULTIMATE.start_main_~IN~0 (_ +zero 8 24)) (fp.lt .cse0 ((_ to_fp 8 24) c_currentRoundingMode (/ 3.0 2.0))) (fp.lt c_ULTIMATE.start_main_~IN~0 .cse1) (fp.geq .cse0 (_ +zero 8 24)) (= c_currentRoundingMode roundNearestTiesToEven)))) is different from true [2021-10-21 20:34:10,444 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((ULTIMATE.start_main_~IN~0 (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (and (fp.geq ULTIMATE.start_main_~IN~0 (_ +zero 8 24)) (fp.lt ULTIMATE.start_main_~IN~0 .cse0) (= (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode .cse0 (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) ULTIMATE.start_main_~IN~0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) ULTIMATE.start_main_~IN~0) ULTIMATE.start_main_~IN~0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) ULTIMATE.start_main_~IN~0) ULTIMATE.start_main_~IN~0) ULTIMATE.start_main_~IN~0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) ULTIMATE.start_main_~IN~0) ULTIMATE.start_main_~IN~0) ULTIMATE.start_main_~IN~0) ULTIMATE.start_main_~IN~0)) c_ULTIMATE.start_main_~result~0)))) (fp.lt c_ULTIMATE.start_main_~result~0 ((_ to_fp 8 24) c_currentRoundingMode (/ 3.0 2.0))) (fp.geq c_ULTIMATE.start_main_~result~0 (_ +zero 8 24)) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-10-21 20:34:10,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:34:10,455 INFO L93 Difference]: Finished difference Result 7 states and 6 transitions. [2021-10-21 20:34:10,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-21 20:34:10,455 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 10 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 6 [2021-10-21 20:34:10,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:34:10,455 INFO L225 Difference]: With dead ends: 7 [2021-10-21 20:34:10,456 INFO L226 Difference]: Without dead ends: 0 [2021-10-21 20:34:10,457 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 9 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 33249.6ms TimeCoverageRelationStatistics Valid=29, Invalid=21, Unknown=16, NotChecked=144, Total=210 [2021-10-21 20:34:10,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-21 20:34:10,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-21 20:34:10,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:34:10,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-21 20:34:10,458 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 6 [2021-10-21 20:34:10,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:34:10,458 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-21 20:34:10,458 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 10 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) [2021-10-21 20:34:10,458 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-21 20:34:10,458 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-21 20:34:10,461 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 20:34:10,487 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc1ca80-cc1c-4ee6-85d8-0d7a2105b9c0/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-21 20:34:10,661 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc1ca80-cc1c-4ee6-85d8-0d7a2105b9c0/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:34:10,663 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-21 20:34:10,665 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:34:10,694 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-21 20:34:10,694 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-21 20:34:10,695 INFO L860 garLoopResultBuilder]: At program point L31(lines 18 32) the Hoare annotation is: true [2021-10-21 20:34:10,695 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-21 20:34:10,695 INFO L857 garLoopResultBuilder]: For program point L29(line 29) no Hoare annotation was computed. [2021-10-21 20:34:10,695 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-21 20:34:10,695 INFO L857 garLoopResultBuilder]: For program point L28(lines 28 29) no Hoare annotation was computed. [2021-10-21 20:34:10,696 INFO L857 garLoopResultBuilder]: For program point L28-2(lines 28 29) no Hoare annotation was computed. [2021-10-21 20:34:10,696 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 29) no Hoare annotation was computed. [2021-10-21 20:34:10,696 INFO L857 garLoopResultBuilder]: For program point L15(line 15) no Hoare annotation was computed. [2021-10-21 20:34:10,696 INFO L857 garLoopResultBuilder]: For program point L14(lines 14 16) no Hoare annotation was computed. [2021-10-21 20:34:10,700 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 20:34:10,705 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 08:34:10 BoogieIcfgContainer [2021-10-21 20:34:10,706 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 20:34:10,706 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 20:34:10,707 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 20:34:10,707 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 20:34:10,707 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:30:43" (3/4) ... [2021-10-21 20:34:10,710 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-21 20:34:10,720 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-10-21 20:34:10,720 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-21 20:34:10,721 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-21 20:34:10,721 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-21 20:34:10,769 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc1ca80-cc1c-4ee6-85d8-0d7a2105b9c0/bin/uautomizer-j4sWxH34Be/witness.graphml [2021-10-21 20:34:10,769 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 20:34:10,774 INFO L168 Benchmark]: Toolchain (without parser) took 209625.98 ms. Allocated memory was 62.9 MB in the beginning and 75.5 MB in the end (delta: 12.6 MB). Free memory was 42.5 MB in the beginning and 57.0 MB in the end (delta: -14.6 MB). Peak memory consumption was 28.3 MB. Max. memory is 16.1 GB. [2021-10-21 20:34:10,777 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 62.9 MB. Free memory is still 42.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:34:10,778 INFO L168 Benchmark]: CACSL2BoogieTranslator took 280.92 ms. Allocated memory is still 62.9 MB. Free memory was 42.3 MB in the beginning and 45.7 MB in the end (delta: -3.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-21 20:34:10,778 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.45 ms. Allocated memory is still 62.9 MB. Free memory was 45.5 MB in the beginning and 44.1 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:34:10,779 INFO L168 Benchmark]: Boogie Preprocessor took 46.90 ms. Allocated memory is still 62.9 MB. Free memory was 44.1 MB in the beginning and 42.9 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:34:10,779 INFO L168 Benchmark]: RCFGBuilder took 2394.50 ms. Allocated memory is still 62.9 MB. Free memory was 42.9 MB in the beginning and 33.9 MB in the end (delta: 9.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-21 20:34:10,780 INFO L168 Benchmark]: TraceAbstraction took 206786.75 ms. Allocated memory was 62.9 MB in the beginning and 75.5 MB in the end (delta: 12.6 MB). Free memory was 33.4 MB in the beginning and 32.2 MB in the end (delta: 1.2 MB). Peak memory consumption was 16.6 MB. Max. memory is 16.1 GB. [2021-10-21 20:34:10,780 INFO L168 Benchmark]: Witness Printer took 62.95 ms. Allocated memory is still 75.5 MB. Free memory was 32.2 MB in the beginning and 57.0 MB in the end (delta: -24.9 MB). Peak memory consumption was 4.4 MB. Max. memory is 16.1 GB. [2021-10-21 20:34:10,785 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 62.9 MB. Free memory is still 42.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 280.92 ms. Allocated memory is still 62.9 MB. Free memory was 42.3 MB in the beginning and 45.7 MB in the end (delta: -3.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 47.45 ms. Allocated memory is still 62.9 MB. Free memory was 45.5 MB in the beginning and 44.1 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 46.90 ms. Allocated memory is still 62.9 MB. Free memory was 44.1 MB in the beginning and 42.9 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 2394.50 ms. Allocated memory is still 62.9 MB. Free memory was 42.9 MB in the beginning and 33.9 MB in the end (delta: 9.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 206786.75 ms. Allocated memory was 62.9 MB in the beginning and 75.5 MB in the end (delta: 12.6 MB). Free memory was 33.4 MB in the beginning and 32.2 MB in the end (delta: 1.2 MB). Peak memory consumption was 16.6 MB. Max. memory is 16.1 GB. * Witness Printer took 62.95 ms. Allocated memory is still 75.5 MB. Free memory was 32.2 MB in the beginning and 57.0 MB in the end (delta: -24.9 MB). Peak memory consumption was 4.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 29]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 206722.7ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 9.6ms, AutomataDifference: 14523.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 31.9ms, InitialAbstractionConstructionTime: 9.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 11 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 3 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 18.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 9 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 33249.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=0, InterpolantAutomatonStates: 8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 14.8ms AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 2 NumberOfFragments, 1 HoareAnnotationTreeSize, 1 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 27.2ms HoareSimplificationTime, 1 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.7ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 25.4ms SsaConstructionTime, 49139.4ms SatisfiabilityAnalysisTime, 142425.6ms InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 20 ConstructedInterpolants, 3 QuantifiedInterpolants, 616 SizeOfPredicates, 6 NumberOfNonLiveVariables, 52 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-10-21 20:34:10,938 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dc1ca80-cc1c-4ee6-85d8-0d7a2105b9c0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...