./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/loop-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94270938-22c4-47fe-b9cd-89f3d348d5a3/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94270938-22c4-47fe-b9cd-89f3d348d5a3/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94270938-22c4-47fe-b9cd-89f3d348d5a3/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94270938-22c4-47fe-b9cd-89f3d348d5a3/bin/uautomizer-GMMbpWq8iD/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/loop-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94270938-22c4-47fe-b9cd-89f3d348d5a3/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94270938-22c4-47fe-b9cd-89f3d348d5a3/bin/uautomizer-GMMbpWq8iD --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 1b0545f8921a3072195050599e45eb6fe3a423f5bd887720e0418c3666aaad9b ........................................................................................................................................................................................................................................... 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_94270938-22c4-47fe-b9cd-89f3d348d5a3/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94270938-22c4-47fe-b9cd-89f3d348d5a3/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94270938-22c4-47fe-b9cd-89f3d348d5a3/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94270938-22c4-47fe-b9cd-89f3d348d5a3/bin/uautomizer-GMMbpWq8iD/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/loop-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94270938-22c4-47fe-b9cd-89f3d348d5a3/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94270938-22c4-47fe-b9cd-89f3d348d5a3/bin/uautomizer-GMMbpWq8iD --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 1b0545f8921a3072195050599e45eb6fe3a423f5bd887720e0418c3666aaad9b ............................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 23:48:45,499 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 23:48:45,503 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 23:48:45,577 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 23:48:45,578 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 23:48:45,580 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 23:48:45,583 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 23:48:45,586 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 23:48:45,589 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 23:48:45,591 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 23:48:45,593 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 23:48:45,595 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 23:48:45,596 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 23:48:45,598 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 23:48:45,600 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 23:48:45,602 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 23:48:45,604 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 23:48:45,606 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 23:48:45,609 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 23:48:45,613 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 23:48:45,616 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 23:48:45,618 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 23:48:45,621 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 23:48:45,622 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 23:48:45,628 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 23:48:45,629 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 23:48:45,630 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 23:48:45,631 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 23:48:45,632 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 23:48:45,634 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 23:48:45,635 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 23:48:45,636 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 23:48:45,638 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 23:48:45,639 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 23:48:45,645 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 23:48:45,645 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 23:48:45,646 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 23:48:45,647 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 23:48:45,647 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 23:48:45,649 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 23:48:45,650 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 23:48:45,656 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94270938-22c4-47fe-b9cd-89f3d348d5a3/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 23:48:45,718 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 23:48:45,719 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 23:48:45,719 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 23:48:45,720 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 23:48:45,727 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 23:48:45,727 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 23:48:45,727 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 23:48:45,728 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 23:48:45,728 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 23:48:45,728 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 23:48:45,730 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 23:48:45,730 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 23:48:45,730 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 23:48:45,731 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 23:48:45,731 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 23:48:45,731 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 23:48:45,731 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 23:48:45,732 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 23:48:45,732 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 23:48:45,732 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 23:48:45,732 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 23:48:45,733 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 23:48:45,733 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:48:45,734 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 23:48:45,734 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 23:48:45,734 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 23:48:45,735 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 23:48:45,735 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 23:48:45,735 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 23:48:45,737 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 23:48:45,738 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 23:48:45,738 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 23:48:45,738 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_94270938-22c4-47fe-b9cd-89f3d348d5a3/bin/uautomizer-GMMbpWq8iD/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94270938-22c4-47fe-b9cd-89f3d348d5a3/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1b0545f8921a3072195050599e45eb6fe3a423f5bd887720e0418c3666aaad9b [2021-10-28 23:48:46,095 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 23:48:46,125 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 23:48:46,128 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 23:48:46,130 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 23:48:46,131 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 23:48:46,132 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94270938-22c4-47fe-b9cd-89f3d348d5a3/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/float-benchs/loop-1.c [2021-10-28 23:48:46,242 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94270938-22c4-47fe-b9cd-89f3d348d5a3/bin/uautomizer-GMMbpWq8iD/data/d6c29cf7f/d86464f66af043d492be7b3edae2ea9d/FLAGf9f4df633 [2021-10-28 23:48:46,818 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 23:48:46,818 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94270938-22c4-47fe-b9cd-89f3d348d5a3/sv-benchmarks/c/float-benchs/loop-1.c [2021-10-28 23:48:46,825 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94270938-22c4-47fe-b9cd-89f3d348d5a3/bin/uautomizer-GMMbpWq8iD/data/d6c29cf7f/d86464f66af043d492be7b3edae2ea9d/FLAGf9f4df633 [2021-10-28 23:48:47,213 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94270938-22c4-47fe-b9cd-89f3d348d5a3/bin/uautomizer-GMMbpWq8iD/data/d6c29cf7f/d86464f66af043d492be7b3edae2ea9d [2021-10-28 23:48:47,216 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 23:48:47,218 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 23:48:47,227 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 23:48:47,228 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 23:48:47,232 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 23:48:47,233 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:48:47" (1/1) ... [2021-10-28 23:48:47,235 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7df192af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:48:47, skipping insertion in model container [2021-10-28 23:48:47,235 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:48:47" (1/1) ... [2021-10-28 23:48:47,245 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 23:48:47,264 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:48:47,475 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_94270938-22c4-47fe-b9cd-89f3d348d5a3/sv-benchmarks/c/float-benchs/loop-1.c[311,324] [2021-10-28 23:48:47,499 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:48:47,510 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 23:48:47,525 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_94270938-22c4-47fe-b9cd-89f3d348d5a3/sv-benchmarks/c/float-benchs/loop-1.c[311,324] [2021-10-28 23:48:47,529 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:48:47,547 INFO L208 MainTranslator]: Completed translation [2021-10-28 23:48:47,549 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:48:47 WrapperNode [2021-10-28 23:48:47,549 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 23:48:47,552 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 23:48:47,553 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 23:48:47,553 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 23:48:47,564 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:48:47" (1/1) ... [2021-10-28 23:48:47,575 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:48:47" (1/1) ... [2021-10-28 23:48:47,602 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 23:48:47,606 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 23:48:47,606 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 23:48:47,607 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 23:48:47,617 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:48:47" (1/1) ... [2021-10-28 23:48:47,618 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:48:47" (1/1) ... [2021-10-28 23:48:47,621 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:48:47" (1/1) ... [2021-10-28 23:48:47,621 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:48:47" (1/1) ... [2021-10-28 23:48:47,630 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:48:47" (1/1) ... [2021-10-28 23:48:47,638 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:48:47" (1/1) ... [2021-10-28 23:48:47,645 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:48:47" (1/1) ... [2021-10-28 23:48:47,648 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 23:48:47,650 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 23:48:47,650 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 23:48:47,651 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 23:48:47,653 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:48:47" (1/1) ... [2021-10-28 23:48:47,663 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:48:47,678 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94270938-22c4-47fe-b9cd-89f3d348d5a3/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:48:47,698 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94270938-22c4-47fe-b9cd-89f3d348d5a3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 23:48:47,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94270938-22c4-47fe-b9cd-89f3d348d5a3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 23:48:47,767 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 23:48:47,767 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 23:48:47,767 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 23:48:47,768 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 23:48:48,013 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 23:48:48,013 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-28 23:48:48,016 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:48:48 BoogieIcfgContainer [2021-10-28 23:48:48,016 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 23:48:48,019 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 23:48:48,019 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 23:48:48,023 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 23:48:48,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 11:48:47" (1/3) ... [2021-10-28 23:48:48,025 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ae6be92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:48:48, skipping insertion in model container [2021-10-28 23:48:48,025 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:48:47" (2/3) ... [2021-10-28 23:48:48,026 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ae6be92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:48:48, skipping insertion in model container [2021-10-28 23:48:48,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:48:48" (3/3) ... [2021-10-28 23:48:48,027 INFO L111 eAbstractionObserver]: Analyzing ICFG loop-1.c [2021-10-28 23:48:48,034 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 23:48:48,035 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-28 23:48:48,095 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 23:48:48,104 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 [2021-10-28 23:48:48,104 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-28 23:48:48,123 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 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) [2021-10-28 23:48:48,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-28 23:48:48,130 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:48:48,131 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-28 23:48:48,131 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:48:48,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:48:48,138 INFO L85 PathProgramCache]: Analyzing trace with hash 889633835, now seen corresponding path program 1 times [2021-10-28 23:48:48,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:48:48,151 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950306741] [2021-10-28 23:48:48,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:48:48,152 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:48:48,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:48:48,356 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:48:48,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:48:48,447 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:48:48,459 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 23:48:48,463 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:48:48,466 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 23:48:48,471 INFO L731 BasicCegarLoop]: Path program histogram: [1] [2021-10-28 23:48:48,475 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 23:48:48,506 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 11:48:48 BoogieIcfgContainer [2021-10-28 23:48:48,506 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 23:48:48,512 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 23:48:48,513 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 23:48:48,513 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 23:48:48,514 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:48:48" (3/4) ... [2021-10-28 23:48:48,519 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-28 23:48:48,519 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 23:48:48,526 INFO L168 Benchmark]: Toolchain (without parser) took 1302.61 ms. Allocated memory is still 100.7 MB. Free memory was 65.2 MB in the beginning and 52.0 MB in the end (delta: 13.2 MB). Peak memory consumption was 10.0 MB. Max. memory is 16.1 GB. [2021-10-28 23:48:48,527 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 100.7 MB. Free memory is still 81.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:48:48,529 INFO L168 Benchmark]: CACSL2BoogieTranslator took 322.38 ms. Allocated memory is still 100.7 MB. Free memory was 65.0 MB in the beginning and 77.5 MB in the end (delta: -12.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 23:48:48,530 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.70 ms. Allocated memory is still 100.7 MB. Free memory was 77.5 MB in the beginning and 76.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:48:48,532 INFO L168 Benchmark]: Boogie Preprocessor took 41.97 ms. Allocated memory is still 100.7 MB. Free memory was 76.2 MB in the beginning and 75.0 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:48:48,533 INFO L168 Benchmark]: RCFGBuilder took 366.42 ms. Allocated memory is still 100.7 MB. Free memory was 75.0 MB in the beginning and 66.5 MB in the end (delta: 8.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 23:48:48,535 INFO L168 Benchmark]: TraceAbstraction took 487.48 ms. Allocated memory is still 100.7 MB. Free memory was 65.7 MB in the beginning and 52.4 MB in the end (delta: 13.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-28 23:48:48,545 INFO L168 Benchmark]: Witness Printer took 7.33 ms. Allocated memory is still 100.7 MB. Free memory was 52.4 MB in the beginning and 52.0 MB in the end (delta: 368.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:48:48,553 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 100.7 MB. Free memory is still 81.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 322.38 ms. Allocated memory is still 100.7 MB. Free memory was 65.0 MB in the beginning and 77.5 MB in the end (delta: -12.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 50.70 ms. Allocated memory is still 100.7 MB. Free memory was 77.5 MB in the beginning and 76.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 41.97 ms. Allocated memory is still 100.7 MB. Free memory was 76.2 MB in the beginning and 75.0 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 366.42 ms. Allocated memory is still 100.7 MB. Free memory was 75.0 MB in the beginning and 66.5 MB in the end (delta: 8.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 487.48 ms. Allocated memory is still 100.7 MB. Free memory was 65.7 MB in the beginning and 52.4 MB in the end (delta: 13.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Witness Printer took 7.33 ms. Allocated memory is still 100.7 MB. Free memory was 52.4 MB in the beginning and 52.0 MB in the end (delta: 368.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 4]: 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 20, overapproximation of someBinaryDOUBLEComparisonOperation at line 20. Possible FailurePath: [L8] float x, y, z; [L10] x = 1.f [L11] y = 1e7 [L12] z = 42.f [L14] COND FALSE !(x < y) [L4] COND TRUE !(cond) [L4] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-28 23:48:48,596 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94270938-22c4-47fe-b9cd-89f3d348d5a3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 23:48:51,760 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 23:48:51,764 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 23:48:51,846 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 23:48:51,847 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 23:48:51,853 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 23:48:51,855 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 23:48:51,864 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 23:48:51,868 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 23:48:51,875 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 23:48:51,877 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 23:48:51,879 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 23:48:51,880 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 23:48:51,883 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 23:48:51,886 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 23:48:51,891 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 23:48:51,894 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 23:48:51,895 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 23:48:51,898 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 23:48:51,908 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 23:48:51,910 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 23:48:51,912 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 23:48:51,915 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 23:48:51,918 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 23:48:51,930 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 23:48:51,931 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 23:48:51,931 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 23:48:51,934 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 23:48:51,935 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 23:48:51,936 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 23:48:51,937 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 23:48:51,938 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 23:48:51,941 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 23:48:51,942 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 23:48:51,944 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 23:48:51,944 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 23:48:51,946 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 23:48:51,946 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 23:48:51,946 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 23:48:51,949 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 23:48:51,950 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 23:48:51,951 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94270938-22c4-47fe-b9cd-89f3d348d5a3/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-10-28 23:48:52,006 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 23:48:52,007 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 23:48:52,008 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 23:48:52,008 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 23:48:52,011 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 23:48:52,011 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 23:48:52,011 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 23:48:52,012 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 23:48:52,012 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 23:48:52,013 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 23:48:52,014 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 23:48:52,014 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 23:48:52,015 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 23:48:52,015 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 23:48:52,016 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-28 23:48:52,016 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-28 23:48:52,016 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 23:48:52,017 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 23:48:52,017 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 23:48:52,017 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 23:48:52,018 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 23:48:52,018 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 23:48:52,018 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 23:48:52,019 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:48:52,019 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 23:48:52,019 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 23:48:52,020 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 23:48:52,021 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-28 23:48:52,021 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-28 23:48:52,021 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 23:48:52,022 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 23:48:52,022 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 23:48:52,022 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 23:48:52,023 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-28 23:48:52,023 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_94270938-22c4-47fe-b9cd-89f3d348d5a3/bin/uautomizer-GMMbpWq8iD/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94270938-22c4-47fe-b9cd-89f3d348d5a3/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1b0545f8921a3072195050599e45eb6fe3a423f5bd887720e0418c3666aaad9b [2021-10-28 23:48:52,576 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 23:48:52,617 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 23:48:52,621 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 23:48:52,623 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 23:48:52,624 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 23:48:52,626 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94270938-22c4-47fe-b9cd-89f3d348d5a3/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/float-benchs/loop-1.c [2021-10-28 23:48:52,716 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94270938-22c4-47fe-b9cd-89f3d348d5a3/bin/uautomizer-GMMbpWq8iD/data/c440be23d/30b76872ef6a49309e99b477fe5bc75d/FLAG750312ba4 [2021-10-28 23:48:53,435 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 23:48:53,435 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94270938-22c4-47fe-b9cd-89f3d348d5a3/sv-benchmarks/c/float-benchs/loop-1.c [2021-10-28 23:48:53,442 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94270938-22c4-47fe-b9cd-89f3d348d5a3/bin/uautomizer-GMMbpWq8iD/data/c440be23d/30b76872ef6a49309e99b477fe5bc75d/FLAG750312ba4 [2021-10-28 23:48:53,761 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94270938-22c4-47fe-b9cd-89f3d348d5a3/bin/uautomizer-GMMbpWq8iD/data/c440be23d/30b76872ef6a49309e99b477fe5bc75d [2021-10-28 23:48:53,765 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 23:48:53,768 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 23:48:53,773 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 23:48:53,773 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 23:48:53,778 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 23:48:53,779 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:48:53" (1/1) ... [2021-10-28 23:48:53,780 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@368548e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:48:53, skipping insertion in model container [2021-10-28 23:48:53,780 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:48:53" (1/1) ... [2021-10-28 23:48:53,790 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 23:48:53,811 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:48:54,031 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_94270938-22c4-47fe-b9cd-89f3d348d5a3/sv-benchmarks/c/float-benchs/loop-1.c[311,324] [2021-10-28 23:48:54,046 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:48:54,065 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 23:48:54,081 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_94270938-22c4-47fe-b9cd-89f3d348d5a3/sv-benchmarks/c/float-benchs/loop-1.c[311,324] [2021-10-28 23:48:54,086 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:48:54,105 INFO L208 MainTranslator]: Completed translation [2021-10-28 23:48:54,106 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:48:54 WrapperNode [2021-10-28 23:48:54,106 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 23:48:54,108 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 23:48:54,108 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 23:48:54,108 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 23:48:54,118 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:48:54" (1/1) ... [2021-10-28 23:48:54,130 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:48:54" (1/1) ... [2021-10-28 23:48:54,181 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 23:48:54,182 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 23:48:54,183 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 23:48:54,183 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 23:48:54,201 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:48:54" (1/1) ... [2021-10-28 23:48:54,201 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:48:54" (1/1) ... [2021-10-28 23:48:54,215 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:48:54" (1/1) ... [2021-10-28 23:48:54,215 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:48:54" (1/1) ... [2021-10-28 23:48:54,224 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:48:54" (1/1) ... [2021-10-28 23:48:54,229 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:48:54" (1/1) ... [2021-10-28 23:48:54,231 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:48:54" (1/1) ... [2021-10-28 23:48:54,234 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 23:48:54,235 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 23:48:54,236 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 23:48:54,236 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 23:48:54,237 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:48:54" (1/1) ... [2021-10-28 23:48:54,246 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:48:54,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94270938-22c4-47fe-b9cd-89f3d348d5a3/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:48:54,285 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94270938-22c4-47fe-b9cd-89f3d348d5a3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 23:48:54,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94270938-22c4-47fe-b9cd-89f3d348d5a3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 23:48:54,345 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 23:48:54,345 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 23:48:54,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-28 23:48:54,346 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 23:48:55,305 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 23:48:55,306 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-28 23:48:55,308 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:48:55 BoogieIcfgContainer [2021-10-28 23:48:55,309 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 23:48:55,311 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 23:48:55,311 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 23:48:55,315 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 23:48:55,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 11:48:53" (1/3) ... [2021-10-28 23:48:55,317 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@238ce003 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:48:55, skipping insertion in model container [2021-10-28 23:48:55,317 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:48:54" (2/3) ... [2021-10-28 23:48:55,318 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@238ce003 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:48:55, skipping insertion in model container [2021-10-28 23:48:55,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:48:55" (3/3) ... [2021-10-28 23:48:55,320 INFO L111 eAbstractionObserver]: Analyzing ICFG loop-1.c [2021-10-28 23:48:55,327 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 23:48:55,327 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-28 23:48:55,389 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 23:48:55,398 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 [2021-10-28 23:48:55,399 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-28 23:48:55,416 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 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) [2021-10-28 23:48:55,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-28 23:48:55,422 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:48:55,423 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-28 23:48:55,424 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:48:55,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:48:55,432 INFO L85 PathProgramCache]: Analyzing trace with hash 889633835, now seen corresponding path program 1 times [2021-10-28 23:48:55,446 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:48:55,447 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [750272289] [2021-10-28 23:48:55,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:48:55,448 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:48:55,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94270938-22c4-47fe-b9cd-89f3d348d5a3/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:48:55,455 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94270938-22c4-47fe-b9cd-89f3d348d5a3/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:48:55,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94270938-22c4-47fe-b9cd-89f3d348d5a3/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-28 23:48:55,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:48:55,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-28 23:48:55,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:48:55,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:48:55,786 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:48:55,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:48:55,856 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:48:55,857 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [750272289] [2021-10-28 23:48:55,858 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [750272289] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:48:55,858 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:48:55,858 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-28 23:48:55,875 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819504589] [2021-10-28 23:48:55,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:48:55,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:48:55,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:48:55,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:48:55,915 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 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 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:48:56,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:48:56,710 INFO L93 Difference]: Finished difference Result 21 states and 27 transitions. [2021-10-28 23:48:56,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:48:56,713 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-28 23:48:56,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:48:56,721 INFO L225 Difference]: With dead ends: 21 [2021-10-28 23:48:56,721 INFO L226 Difference]: Without dead ends: 9 [2021-10-28 23:48:56,724 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:48:56,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-10-28 23:48:56,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-10-28 23:48:56,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 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) [2021-10-28 23:48:56,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2021-10-28 23:48:56,755 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2021-10-28 23:48:56,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:48:56,755 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2021-10-28 23:48:56,756 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:48:56,756 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2021-10-28 23:48:56,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-28 23:48:56,757 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:48:56,757 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2021-10-28 23:48:56,778 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94270938-22c4-47fe-b9cd-89f3d348d5a3/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-10-28 23:48:56,973 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94270938-22c4-47fe-b9cd-89f3d348d5a3/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:48:56,973 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:48:56,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:48:56,975 INFO L85 PathProgramCache]: Analyzing trace with hash 292915403, now seen corresponding path program 1 times [2021-10-28 23:48:56,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:48:56,976 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2078631330] [2021-10-28 23:48:56,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:48:56,977 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:48:56,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94270938-22c4-47fe-b9cd-89f3d348d5a3/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:48:56,979 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94270938-22c4-47fe-b9cd-89f3d348d5a3/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:48:56,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94270938-22c4-47fe-b9cd-89f3d348d5a3/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-28 23:48:57,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:48:57,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-28 23:48:57,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:48:57,668 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:48:57,668 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:49:19,277 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:49:19,278 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:49:19,278 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2078631330] [2021-10-28 23:49:19,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2078631330] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-28 23:49:19,278 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:49:19,279 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-28 23:49:19,279 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743227277] [2021-10-28 23:49:19,281 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 23:49:19,281 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:49:19,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 23:49:19,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=43, Unknown=3, NotChecked=0, Total=72 [2021-10-28 23:49:19,284 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 9 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 9 states have internal predecessors, (13), 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) [2021-10-28 23:49:38,458 WARN L207 SmtUtils]: Spent 10.48 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-28 23:49:57,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:49:57,866 INFO L93 Difference]: Finished difference Result 17 states and 20 transitions. [2021-10-28 23:49:57,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 23:49:57,873 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 9 states have internal predecessors, (13), 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 8 [2021-10-28 23:49:57,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:49:57,874 INFO L225 Difference]: With dead ends: 17 [2021-10-28 23:49:57,874 INFO L226 Difference]: Without dead ends: 13 [2021-10-28 23:49:57,875 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 40.0s TimeCoverageRelationStatistics Valid=60, Invalid=93, Unknown=3, NotChecked=0, Total=156 [2021-10-28 23:49:57,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-10-28 23:49:57,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-10-28 23:49:57,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 12 states have internal predecessors, (13), 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) [2021-10-28 23:49:57,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2021-10-28 23:49:57,881 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 8 [2021-10-28 23:49:57,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:49:57,892 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2021-10-28 23:49:57,894 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 9 states have internal predecessors, (13), 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) [2021-10-28 23:49:57,895 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2021-10-28 23:49:57,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-28 23:49:57,895 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:49:57,896 INFO L513 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1] [2021-10-28 23:49:57,923 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94270938-22c4-47fe-b9cd-89f3d348d5a3/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-28 23:49:58,110 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94270938-22c4-47fe-b9cd-89f3d348d5a3/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:49:58,111 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:49:58,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:49:58,112 INFO L85 PathProgramCache]: Analyzing trace with hash -967103989, now seen corresponding path program 2 times [2021-10-28 23:49:58,113 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:49:58,113 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [618122971] [2021-10-28 23:49:58,114 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 23:49:58,114 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:49:58,114 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94270938-22c4-47fe-b9cd-89f3d348d5a3/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:49:58,116 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94270938-22c4-47fe-b9cd-89f3d348d5a3/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:49:58,129 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94270938-22c4-47fe-b9cd-89f3d348d5a3/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-28 23:49:58,674 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 23:49:58,675 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:49:58,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-28 23:49:58,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:50:03,228 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:50:03,229 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:50:37,908 WARN L207 SmtUtils]: Spent 5.63 s on a formula simplification that was a NOOP. DAG size: 13 [2021-10-28 23:51:13,639 WARN L207 SmtUtils]: Spent 6.25 s on a formula simplification that was a NOOP. DAG size: 14 [2021-10-28 23:51:21,561 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~z~0 .cse1) .cse1) .cse1) .cse1)))) (and (fp.leq ((_ to_fp 11 53) c_currentRoundingMode .cse0) ((_ to_fp 11 53) c_currentRoundingMode 100000000.0)) (fp.geq .cse0 (_ +zero 8 24)))) is different from false [2021-10-28 23:51:31,369 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~z~0 .cse1) .cse1) .cse1) .cse1) .cse1)))) (and (fp.leq ((_ to_fp 11 53) c_currentRoundingMode .cse0) ((_ to_fp 11 53) c_currentRoundingMode 100000000.0)) (fp.geq .cse0 (_ +zero 8 24)))) is different from false [2021-10-28 23:51:33,393 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~z~0 .cse1) .cse1) .cse1) .cse1) .cse1)))) (and (fp.leq ((_ to_fp 11 53) c_currentRoundingMode .cse0) ((_ to_fp 11 53) c_currentRoundingMode 100000000.0)) (fp.geq .cse0 (_ +zero 8 24)))) is different from true [2021-10-28 23:51:42,678 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~z~0 .cse1) .cse1) .cse1) .cse1) .cse1) .cse1)))) (and (fp.geq .cse0 (_ +zero 8 24)) (fp.leq ((_ to_fp 11 53) c_currentRoundingMode .cse0) ((_ to_fp 11 53) c_currentRoundingMode 100000000.0)))) is different from false [2021-10-28 23:51:44,705 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~z~0 .cse1) .cse1) .cse1) .cse1) .cse1) .cse1)))) (and (fp.geq .cse0 (_ +zero 8 24)) (fp.leq ((_ to_fp 11 53) c_currentRoundingMode .cse0) ((_ to_fp 11 53) c_currentRoundingMode 100000000.0)))) is different from true [2021-10-28 23:51:44,729 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 5 times theorem prover too weak. 0 trivial. 15 not checked. [2021-10-28 23:51:44,729 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:51:44,730 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [618122971] [2021-10-28 23:51:44,730 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [618122971] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-28 23:51:44,730 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:51:44,731 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-10-28 23:51:44,731 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456498096] [2021-10-28 23:51:44,731 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-28 23:51:44,732 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:51:44,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-28 23:51:44,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=168, Unknown=13, NotChecked=90, Total=342 [2021-10-28 23:51:44,734 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 19 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 19 states have internal predecessors, (23), 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) [2021-10-28 23:51:53,334 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~z~0 .cse1) .cse1) .cse1) .cse1) .cse1) .cse1)))) (and (= c_ULTIMATE.start_main_~z~0 ((_ to_fp 8 24) c_currentRoundingMode 42.0)) (fp.geq .cse0 (_ +zero 8 24)) (fp.leq ((_ to_fp 11 53) c_currentRoundingMode .cse0) ((_ to_fp 11 53) c_currentRoundingMode 100000000.0)) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-10-28 23:51:56,960 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (let ((.cse0 (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~z~0 .cse1) .cse1) .cse1) .cse1) .cse1))) (and (fp.leq ((_ to_fp 11 53) c_currentRoundingMode .cse0) ((_ to_fp 11 53) c_currentRoundingMode 100000000.0)) (= c_ULTIMATE.start_main_~z~0 (fp.add c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 42.0) .cse1)) (= c_currentRoundingMode roundNearestTiesToEven) (fp.geq .cse0 (_ +zero 8 24))))) is different from true [2021-10-28 23:53:24,091 WARN L207 SmtUtils]: Spent 50.03 s on a formula simplification. DAG size of input: 25 DAG size of output: 16 [2021-10-28 23:53:55,743 WARN L207 SmtUtils]: Spent 14.94 s on a formula simplification. DAG size of input: 21 DAG size of output: 14 [2021-10-28 23:53:58,338 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse4 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (let ((.cse0 (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~z~0 .cse4))) (let ((.cse3 (fp.add c_currentRoundingMode .cse0 .cse4))) (let ((.cse2 (fp.add c_currentRoundingMode .cse3 .cse4)) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode 100000000.0))) (and (fp.geq .cse0 (_ +zero 8 24)) (fp.geq c_ULTIMATE.start_main_~z~0 (_ +zero 8 24)) (fp.leq ((_ to_fp 11 53) c_currentRoundingMode .cse0) .cse1) (fp.geq .cse2 (_ +zero 8 24)) (fp.geq .cse3 (_ +zero 8 24)) (fp.leq ((_ to_fp 11 53) c_currentRoundingMode .cse2) .cse1) (fp.leq ((_ to_fp 11 53) c_currentRoundingMode .cse3) .cse1) (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32)) (= c_currentRoundingMode roundNearestTiesToEven) (fp.leq ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~z~0) .cse1)))))) is different from false [2021-10-28 23:54:00,371 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse4 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (let ((.cse0 (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~z~0 .cse4))) (let ((.cse3 (fp.add c_currentRoundingMode .cse0 .cse4))) (let ((.cse2 (fp.add c_currentRoundingMode .cse3 .cse4)) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode 100000000.0))) (and (fp.geq .cse0 (_ +zero 8 24)) (fp.geq c_ULTIMATE.start_main_~z~0 (_ +zero 8 24)) (fp.leq ((_ to_fp 11 53) c_currentRoundingMode .cse0) .cse1) (fp.geq .cse2 (_ +zero 8 24)) (fp.geq .cse3 (_ +zero 8 24)) (fp.leq ((_ to_fp 11 53) c_currentRoundingMode .cse2) .cse1) (fp.leq ((_ to_fp 11 53) c_currentRoundingMode .cse3) .cse1) (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32)) (= c_currentRoundingMode roundNearestTiesToEven) (fp.leq ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~z~0) .cse1)))))) is different from true [2021-10-28 23:54:02,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:54:02,411 INFO L93 Difference]: Finished difference Result 17 states and 19 transitions. [2021-10-28 23:54:02,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-28 23:54:02,444 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 19 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-28 23:54:02,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:54:02,445 INFO L225 Difference]: With dead ends: 17 [2021-10-28 23:54:02,445 INFO L226 Difference]: Without dead ends: 0 [2021-10-28 23:54:02,446 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 197.6s TimeCoverageRelationStatistics Valid=118, Invalid=227, Unknown=21, NotChecked=234, Total=600 [2021-10-28 23:54:02,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-28 23:54:02,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-28 23:54:02,447 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) [2021-10-28 23:54:02,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-28 23:54:02,447 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2021-10-28 23:54:02,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:54:02,447 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 23:54:02,448 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 19 states have internal predecessors, (23), 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) [2021-10-28 23:54:02,448 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-28 23:54:02,448 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-28 23:54:02,451 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:54:02,472 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94270938-22c4-47fe-b9cd-89f3d348d5a3/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-10-28 23:54:02,656 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94270938-22c4-47fe-b9cd-89f3d348d5a3/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:54:02,658 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-28 23:54:02,662 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:54:02,702 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:54:02,704 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:54:46,217 WARN L207 SmtUtils]: Spent 43.46 s on a formula simplification. DAG size of input: 77 DAG size of output: 14 [2021-10-28 23:54:46,219 INFO L860 garLoopResultBuilder]: At program point L4-3(line 4) the Hoare annotation is: true [2021-10-28 23:54:46,219 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-28 23:54:46,220 INFO L860 garLoopResultBuilder]: At program point L21(lines 6 22) the Hoare annotation is: true [2021-10-28 23:54:46,220 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-28 23:54:46,220 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-28 23:54:46,220 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-28 23:54:46,224 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2021-10-28 23:54:46,225 INFO L853 garLoopResultBuilder]: At program point L14-2(lines 14 18) the Hoare annotation is: (and (fp.geq ULTIMATE.start_main_~z~0 (_ +zero 8 24)) (fp.leq ((_ to_fp 11 53) currentRoundingMode (fp.add currentRoundingMode ULTIMATE.start_main_~z~0 ((_ to_fp 8 24) currentRoundingMode 1.0))) ((_ to_fp 11 53) currentRoundingMode 100000000.0)) (= currentRoundingMode roundNearestTiesToEven)) [2021-10-28 23:54:46,225 INFO L857 garLoopResultBuilder]: For program point L14-3(lines 14 18) no Hoare annotation was computed. [2021-10-28 23:54:46,225 INFO L857 garLoopResultBuilder]: For program point L4(line 4) no Hoare annotation was computed. [2021-10-28 23:54:46,225 INFO L857 garLoopResultBuilder]: For program point L4-1(line 4) no Hoare annotation was computed. [2021-10-28 23:54:46,230 INFO L731 BasicCegarLoop]: Path program histogram: [2, 1] [2021-10-28 23:54:46,232 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 23:54:46,247 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-28 23:54:46,252 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-28 23:54:46,255 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 11:54:46 BoogieIcfgContainer [2021-10-28 23:54:46,256 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 23:54:46,257 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 23:54:46,257 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 23:54:46,258 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 23:54:46,258 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:48:55" (3/4) ... [2021-10-28 23:54:46,265 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-28 23:54:46,278 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-10-28 23:54:46,280 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-28 23:54:46,280 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-28 23:54:46,281 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 23:54:46,336 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94270938-22c4-47fe-b9cd-89f3d348d5a3/bin/uautomizer-GMMbpWq8iD/witness.graphml [2021-10-28 23:54:46,336 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 23:54:46,337 INFO L168 Benchmark]: Toolchain (without parser) took 352568.85 ms. Allocated memory was 67.1 MB in the beginning and 81.8 MB in the end (delta: 14.7 MB). Free memory was 46.7 MB in the beginning and 44.1 MB in the end (delta: 2.6 MB). Peak memory consumption was 18.0 MB. Max. memory is 16.1 GB. [2021-10-28 23:54:46,338 INFO L168 Benchmark]: CDTParser took 0.39 ms. Allocated memory is still 67.1 MB. Free memory is still 48.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:54:46,341 INFO L168 Benchmark]: CACSL2BoogieTranslator took 333.98 ms. Allocated memory is still 67.1 MB. Free memory was 46.6 MB in the beginning and 36.4 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 23:54:46,345 INFO L168 Benchmark]: Boogie Procedure Inliner took 73.45 ms. Allocated memory is still 67.1 MB. Free memory was 36.3 MB in the beginning and 50.3 MB in the end (delta: -14.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 16.1 GB. [2021-10-28 23:54:46,346 INFO L168 Benchmark]: Boogie Preprocessor took 52.07 ms. Allocated memory is still 67.1 MB. Free memory was 50.3 MB in the beginning and 49.2 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:54:46,346 INFO L168 Benchmark]: RCFGBuilder took 1073.49 ms. Allocated memory is still 67.1 MB. Free memory was 49.2 MB in the beginning and 40.1 MB in the end (delta: 9.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 23:54:46,347 INFO L168 Benchmark]: TraceAbstraction took 350944.89 ms. Allocated memory was 67.1 MB in the beginning and 81.8 MB in the end (delta: 14.7 MB). Free memory was 39.7 MB in the beginning and 46.8 MB in the end (delta: -7.1 MB). Peak memory consumption was 8.7 MB. Max. memory is 16.1 GB. [2021-10-28 23:54:46,347 INFO L168 Benchmark]: Witness Printer took 79.07 ms. Allocated memory is still 81.8 MB. Free memory was 46.2 MB in the beginning and 44.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:54:46,350 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39 ms. Allocated memory is still 67.1 MB. Free memory is still 48.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 333.98 ms. Allocated memory is still 67.1 MB. Free memory was 46.6 MB in the beginning and 36.4 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 73.45 ms. Allocated memory is still 67.1 MB. Free memory was 36.3 MB in the beginning and 50.3 MB in the end (delta: -14.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 52.07 ms. Allocated memory is still 67.1 MB. Free memory was 50.3 MB in the beginning and 49.2 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1073.49 ms. Allocated memory is still 67.1 MB. Free memory was 49.2 MB in the beginning and 40.1 MB in the end (delta: 9.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 350944.89 ms. Allocated memory was 67.1 MB in the beginning and 81.8 MB in the end (delta: 14.7 MB). Free memory was 39.7 MB in the beginning and 46.8 MB in the end (delta: -7.1 MB). Peak memory consumption was 8.7 MB. Max. memory is 16.1 GB. * Witness Printer took 79.07 ms. Allocated memory is still 81.8 MB. Free memory was 46.2 MB in the beginning and 44.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 4]: 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: 350.8s, OverallIterations: 3, TraceHistogramMax: 6, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 177.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 43.5s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 16 SDtfs, 21 SDslu, 29 SDs, 0 SdLazy, 100 SolverSat, 27 SolverUnsat, 7 SolverUnknown, 0 SolverNotchecked, 33.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 57 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 237.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=2, InterpolantAutomatonStates: 27, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 13 NumberOfFragments, 21 HoareAnnotationTreeSize, 3 FomulaSimplifications, 26 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 440 FormulaSimplificationTreeSizeReductionInter, 43.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 128.2s InterpolantComputationTime, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 46 ConstructedInterpolants, 1 QuantifiedInterpolants, 667 SizeOfPredicates, 10 NumberOfNonLiveVariables, 122 ConjunctsInSsa, 22 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 0/48 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: 4]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 6]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 14]: Loop Invariant [2021-10-28 23:54:46,361 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-28 23:54:46,361 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: (~fp.geq~FLOAT(z, ~Pluszero~LONGDOUBLE()) && ~fp.leq~DOUBLE(~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~fp.add~FLOAT(unknown-currentRoundingMode-unknown, z, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0))), ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0E8))) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven RESULT: Ultimate proved your program to be correct! [2021-10-28 23:54:46,491 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94270938-22c4-47fe-b9cd-89f3d348d5a3/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...