./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-esbmc-regression/Float_div.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c69eee-0bee-447c-84b4-e2a80a27b003/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c69eee-0bee-447c-84b4-e2a80a27b003/bin/uautomizer-WNIpwEf4Nt/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c69eee-0bee-447c-84b4-e2a80a27b003/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c69eee-0bee-447c-84b4-e2a80a27b003/bin/uautomizer-WNIpwEf4Nt/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-esbmc-regression/Float_div.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c69eee-0bee-447c-84b4-e2a80a27b003/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c69eee-0bee-447c-84b4-e2a80a27b003/bin/uautomizer-WNIpwEf4Nt --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 aff65fabc2d382d12545e3467825c9efd3fdd157 ...................................................................................................................................................................................................................................... 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_d1c69eee-0bee-447c-84b4-e2a80a27b003/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c69eee-0bee-447c-84b4-e2a80a27b003/bin/uautomizer-WNIpwEf4Nt/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c69eee-0bee-447c-84b4-e2a80a27b003/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c69eee-0bee-447c-84b4-e2a80a27b003/bin/uautomizer-WNIpwEf4Nt/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-esbmc-regression/Float_div.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c69eee-0bee-447c-84b4-e2a80a27b003/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c69eee-0bee-447c-84b4-e2a80a27b003/bin/uautomizer-WNIpwEf4Nt --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 aff65fabc2d382d12545e3467825c9efd3fdd157 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 01:17:16,547 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 01:17:16,551 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 01:17:16,617 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 01:17:16,618 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 01:17:16,623 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 01:17:16,626 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 01:17:16,631 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 01:17:16,634 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 01:17:16,642 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 01:17:16,643 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 01:17:16,645 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 01:17:16,646 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 01:17:16,649 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 01:17:16,651 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 01:17:16,657 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 01:17:16,659 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 01:17:16,660 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 01:17:16,663 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 01:17:16,671 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 01:17:16,673 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 01:17:16,674 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 01:17:16,678 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 01:17:16,679 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 01:17:16,688 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 01:17:16,689 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 01:17:16,689 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 01:17:16,692 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 01:17:16,692 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 01:17:16,694 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 01:17:16,694 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 01:17:16,696 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 01:17:16,698 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 01:17:16,700 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 01:17:16,702 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 01:17:16,702 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 01:17:16,703 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 01:17:16,703 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 01:17:16,704 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 01:17:16,705 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 01:17:16,706 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 01:17:16,707 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c69eee-0bee-447c-84b4-e2a80a27b003/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-13 01:17:16,753 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 01:17:16,754 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 01:17:16,754 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 01:17:16,755 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 01:17:16,756 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 01:17:16,756 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 01:17:16,757 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 01:17:16,757 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 01:17:16,757 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 01:17:16,757 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 01:17:16,759 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 01:17:16,759 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 01:17:16,759 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 01:17:16,759 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 01:17:16,760 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 01:17:16,760 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 01:17:16,760 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 01:17:16,760 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 01:17:16,760 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 01:17:16,761 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 01:17:16,761 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 01:17:16,761 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 01:17:16,762 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 01:17:16,762 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 01:17:16,762 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 01:17:16,762 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 01:17:16,763 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-13 01:17:16,763 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 01:17:16,763 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 01:17:16,765 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 01:17:16,765 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_d1c69eee-0bee-447c-84b4-e2a80a27b003/bin/uautomizer-WNIpwEf4Nt/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c69eee-0bee-447c-84b4-e2a80a27b003/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aff65fabc2d382d12545e3467825c9efd3fdd157 [2021-10-13 01:17:17,023 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 01:17:17,056 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 01:17:17,060 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 01:17:17,061 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 01:17:17,062 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 01:17:17,063 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c69eee-0bee-447c-84b4-e2a80a27b003/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/floats-esbmc-regression/Float_div.i [2021-10-13 01:17:17,151 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c69eee-0bee-447c-84b4-e2a80a27b003/bin/uautomizer-WNIpwEf4Nt/data/43f359cab/26e0ef84a63a4f6993f2f794c2497127/FLAG0c22a1672 [2021-10-13 01:17:17,751 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 01:17:17,751 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c69eee-0bee-447c-84b4-e2a80a27b003/sv-benchmarks/c/floats-esbmc-regression/Float_div.i [2021-10-13 01:17:17,764 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c69eee-0bee-447c-84b4-e2a80a27b003/bin/uautomizer-WNIpwEf4Nt/data/43f359cab/26e0ef84a63a4f6993f2f794c2497127/FLAG0c22a1672 [2021-10-13 01:17:18,132 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c69eee-0bee-447c-84b4-e2a80a27b003/bin/uautomizer-WNIpwEf4Nt/data/43f359cab/26e0ef84a63a4f6993f2f794c2497127 [2021-10-13 01:17:18,136 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 01:17:18,138 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 01:17:18,140 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 01:17:18,140 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 01:17:18,145 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 01:17:18,146 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:17:18" (1/1) ... [2021-10-13 01:17:18,147 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12118e6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:17:18, skipping insertion in model container [2021-10-13 01:17:18,147 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:17:18" (1/1) ... [2021-10-13 01:17:18,156 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 01:17:18,172 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 01:17:18,355 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_d1c69eee-0bee-447c-84b4-e2a80a27b003/sv-benchmarks/c/floats-esbmc-regression/Float_div.i[803,816] [2021-10-13 01:17:18,368 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 01:17:18,378 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 01:17:18,394 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_d1c69eee-0bee-447c-84b4-e2a80a27b003/sv-benchmarks/c/floats-esbmc-regression/Float_div.i[803,816] [2021-10-13 01:17:18,401 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 01:17:18,412 INFO L208 MainTranslator]: Completed translation [2021-10-13 01:17:18,413 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:17:18 WrapperNode [2021-10-13 01:17:18,413 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 01:17:18,414 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 01:17:18,414 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 01:17:18,415 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 01:17:18,422 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:17:18" (1/1) ... [2021-10-13 01:17:18,429 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:17:18" (1/1) ... [2021-10-13 01:17:18,446 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 01:17:18,447 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 01:17:18,447 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 01:17:18,447 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 01:17:18,455 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:17:18" (1/1) ... [2021-10-13 01:17:18,456 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:17:18" (1/1) ... [2021-10-13 01:17:18,457 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:17:18" (1/1) ... [2021-10-13 01:17:18,457 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:17:18" (1/1) ... [2021-10-13 01:17:18,461 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:17:18" (1/1) ... [2021-10-13 01:17:18,465 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:17:18" (1/1) ... [2021-10-13 01:17:18,466 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:17:18" (1/1) ... [2021-10-13 01:17:18,468 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 01:17:18,469 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 01:17:18,469 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 01:17:18,469 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 01:17:18,471 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:17:18" (1/1) ... [2021-10-13 01:17:18,479 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 01:17:18,490 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c69eee-0bee-447c-84b4-e2a80a27b003/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:17:18,507 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c69eee-0bee-447c-84b4-e2a80a27b003/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 01:17:18,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c69eee-0bee-447c-84b4-e2a80a27b003/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 01:17:18,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 01:17:18,554 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 01:17:18,555 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 01:17:18,555 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 01:17:18,761 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 01:17:18,762 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-13 01:17:18,764 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:17:18 BoogieIcfgContainer [2021-10-13 01:17:18,764 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 01:17:18,766 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 01:17:18,766 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 01:17:18,770 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 01:17:18,771 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 01:17:18" (1/3) ... [2021-10-13 01:17:18,771 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20da17ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:17:18, skipping insertion in model container [2021-10-13 01:17:18,772 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:17:18" (2/3) ... [2021-10-13 01:17:18,772 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20da17ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:17:18, skipping insertion in model container [2021-10-13 01:17:18,772 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:17:18" (3/3) ... [2021-10-13 01:17:18,774 INFO L111 eAbstractionObserver]: Analyzing ICFG Float_div.i [2021-10-13 01:17:18,779 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 01:17:18,780 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 01:17:18,882 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 01:17:18,890 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 01:17:18,913 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 01:17:18,928 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) [2021-10-13 01:17:18,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-13 01:17:18,933 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:17:18,934 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-13 01:17:18,935 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 01:17:18,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:17:18,940 INFO L82 PathProgramCache]: Analyzing trace with hash 889633835, now seen corresponding path program 1 times [2021-10-13 01:17:18,950 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:17:18,951 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091764795] [2021-10-13 01:17:18,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:17:18,952 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:17:19,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:17:19,089 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 01:17:19,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:17:19,170 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 01:17:19,174 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-13 01:17:19,176 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 01:17:19,179 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 01:17:19,186 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 01:17:19,208 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 01:17:19 BoogieIcfgContainer [2021-10-13 01:17:19,208 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 01:17:19,215 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 01:17:19,215 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 01:17:19,216 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 01:17:19,217 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:17:18" (3/4) ... [2021-10-13 01:17:19,220 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-13 01:17:19,220 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 01:17:19,226 INFO L168 Benchmark]: Toolchain (without parser) took 1083.77 ms. Allocated memory is still 98.6 MB. Free memory was 65.9 MB in the beginning and 50.3 MB in the end (delta: 15.6 MB). Peak memory consumption was 13.8 MB. Max. memory is 16.1 GB. [2021-10-13 01:17:19,227 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 98.6 MB. Free memory is still 53.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 01:17:19,229 INFO L168 Benchmark]: CACSL2BoogieTranslator took 273.34 ms. Allocated memory is still 98.6 MB. Free memory was 65.7 MB in the beginning and 74.4 MB in the end (delta: -8.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 01:17:19,230 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.17 ms. Allocated memory is still 98.6 MB. Free memory was 74.4 MB in the beginning and 73.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 01:17:19,231 INFO L168 Benchmark]: Boogie Preprocessor took 21.32 ms. Allocated memory is still 98.6 MB. Free memory was 73.1 MB in the beginning and 72.0 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 01:17:19,233 INFO L168 Benchmark]: RCFGBuilder took 295.09 ms. Allocated memory is still 98.6 MB. Free memory was 72.0 MB in the beginning and 63.6 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 01:17:19,234 INFO L168 Benchmark]: TraceAbstraction took 442.52 ms. Allocated memory is still 98.6 MB. Free memory was 63.0 MB in the beginning and 50.7 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-13 01:17:19,241 INFO L168 Benchmark]: Witness Printer took 5.76 ms. Allocated memory is still 98.6 MB. Free memory was 50.7 MB in the beginning and 50.3 MB in the end (delta: 330.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 01:17:19,248 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 98.6 MB. Free memory is still 53.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 273.34 ms. Allocated memory is still 98.6 MB. Free memory was 65.7 MB in the beginning and 74.4 MB in the end (delta: -8.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 32.17 ms. Allocated memory is still 98.6 MB. Free memory was 74.4 MB in the beginning and 73.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 21.32 ms. Allocated memory is still 98.6 MB. Free memory was 73.1 MB in the beginning and 72.0 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 295.09 ms. Allocated memory is still 98.6 MB. Free memory was 72.0 MB in the beginning and 63.6 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 442.52 ms. Allocated memory is still 98.6 MB. Free memory was 63.0 MB in the beginning and 50.7 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Witness Printer took 5.76 ms. Allocated memory is still 98.6 MB. Free memory was 50.7 MB in the beginning and 50.3 MB in the end (delta: 330.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 13]: 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 29, overapproximation of someBinaryArithmeticFLOAToperation at line 21. Possible FailurePath: [L20] float x = 1.0f; [L21] float x1 = x/2.5f; [L23] COND FALSE !(x1 != x) [L13] COND TRUE !(cond) [L13] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 304.0ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 9.3ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 11.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms 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, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 7.1ms SsaConstructionTime, 64.9ms SatisfiabilityAnalysisTime, 0.0ms 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 [2021-10-13 01:17:19,309 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c69eee-0bee-447c-84b4-e2a80a27b003/bin/uautomizer-WNIpwEf4Nt/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-4e77c04 [2021-10-13 01:17:22,032 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 01:17:22,036 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 01:17:22,078 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 01:17:22,078 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 01:17:22,080 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 01:17:22,082 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 01:17:22,085 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 01:17:22,088 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 01:17:22,089 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 01:17:22,091 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 01:17:22,093 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 01:17:22,094 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 01:17:22,095 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 01:17:22,097 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 01:17:22,099 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 01:17:22,101 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 01:17:22,102 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 01:17:22,105 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 01:17:22,108 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 01:17:22,111 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 01:17:22,113 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 01:17:22,115 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 01:17:22,116 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 01:17:22,121 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 01:17:22,122 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 01:17:22,123 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 01:17:22,133 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 01:17:22,134 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 01:17:22,136 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 01:17:22,136 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 01:17:22,137 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 01:17:22,138 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 01:17:22,139 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 01:17:22,141 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 01:17:22,141 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 01:17:22,142 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 01:17:22,143 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 01:17:22,143 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 01:17:22,147 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 01:17:22,149 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 01:17:22,150 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c69eee-0bee-447c-84b4-e2a80a27b003/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-10-13 01:17:22,206 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 01:17:22,206 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 01:17:22,207 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 01:17:22,207 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 01:17:22,209 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 01:17:22,209 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 01:17:22,210 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 01:17:22,210 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 01:17:22,210 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 01:17:22,210 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 01:17:22,211 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 01:17:22,212 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 01:17:22,212 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 01:17:22,212 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 01:17:22,212 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 01:17:22,212 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 01:17:22,212 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 01:17:22,213 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 01:17:22,213 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 01:17:22,213 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 01:17:22,213 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 01:17:22,213 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 01:17:22,214 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 01:17:22,214 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 01:17:22,214 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 01:17:22,214 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 01:17:22,214 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 01:17:22,215 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-13 01:17:22,215 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 01:17:22,215 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 01:17:22,215 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 01:17:22,215 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 01:17:22,216 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_d1c69eee-0bee-447c-84b4-e2a80a27b003/bin/uautomizer-WNIpwEf4Nt/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c69eee-0bee-447c-84b4-e2a80a27b003/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aff65fabc2d382d12545e3467825c9efd3fdd157 [2021-10-13 01:17:22,672 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 01:17:22,704 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 01:17:22,707 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 01:17:22,708 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 01:17:22,709 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 01:17:22,710 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c69eee-0bee-447c-84b4-e2a80a27b003/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/floats-esbmc-regression/Float_div.i [2021-10-13 01:17:22,801 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c69eee-0bee-447c-84b4-e2a80a27b003/bin/uautomizer-WNIpwEf4Nt/data/a2787ed03/0cd88174fda54b52af707402d8f5cf74/FLAG1f1e0c4ed [2021-10-13 01:17:23,375 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 01:17:23,375 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c69eee-0bee-447c-84b4-e2a80a27b003/sv-benchmarks/c/floats-esbmc-regression/Float_div.i [2021-10-13 01:17:23,385 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c69eee-0bee-447c-84b4-e2a80a27b003/bin/uautomizer-WNIpwEf4Nt/data/a2787ed03/0cd88174fda54b52af707402d8f5cf74/FLAG1f1e0c4ed [2021-10-13 01:17:23,734 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c69eee-0bee-447c-84b4-e2a80a27b003/bin/uautomizer-WNIpwEf4Nt/data/a2787ed03/0cd88174fda54b52af707402d8f5cf74 [2021-10-13 01:17:23,737 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 01:17:23,739 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 01:17:23,741 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 01:17:23,741 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 01:17:23,751 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 01:17:23,752 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:17:23" (1/1) ... [2021-10-13 01:17:23,753 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37908040 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:17:23, skipping insertion in model container [2021-10-13 01:17:23,753 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:17:23" (1/1) ... [2021-10-13 01:17:23,767 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 01:17:23,783 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 01:17:23,956 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_d1c69eee-0bee-447c-84b4-e2a80a27b003/sv-benchmarks/c/floats-esbmc-regression/Float_div.i[803,816] [2021-10-13 01:17:23,968 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 01:17:23,983 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 01:17:24,002 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_d1c69eee-0bee-447c-84b4-e2a80a27b003/sv-benchmarks/c/floats-esbmc-regression/Float_div.i[803,816] [2021-10-13 01:17:24,008 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 01:17:24,041 INFO L208 MainTranslator]: Completed translation [2021-10-13 01:17:24,042 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:17:24 WrapperNode [2021-10-13 01:17:24,043 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 01:17:24,046 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 01:17:24,046 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 01:17:24,046 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 01:17:24,054 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:17:24" (1/1) ... [2021-10-13 01:17:24,067 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:17:24" (1/1) ... [2021-10-13 01:17:24,109 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 01:17:24,111 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 01:17:24,111 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 01:17:24,111 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 01:17:24,121 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:17:24" (1/1) ... [2021-10-13 01:17:24,121 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:17:24" (1/1) ... [2021-10-13 01:17:24,138 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:17:24" (1/1) ... [2021-10-13 01:17:24,138 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:17:24" (1/1) ... [2021-10-13 01:17:24,145 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:17:24" (1/1) ... [2021-10-13 01:17:24,152 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:17:24" (1/1) ... [2021-10-13 01:17:24,161 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:17:24" (1/1) ... [2021-10-13 01:17:24,168 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 01:17:24,170 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 01:17:24,170 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 01:17:24,171 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 01:17:24,172 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:17:24" (1/1) ... [2021-10-13 01:17:24,181 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 01:17:24,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c69eee-0bee-447c-84b4-e2a80a27b003/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:17:24,219 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c69eee-0bee-447c-84b4-e2a80a27b003/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 01:17:24,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c69eee-0bee-447c-84b4-e2a80a27b003/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 01:17:24,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-13 01:17:24,287 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 01:17:24,287 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 01:17:24,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 01:17:24,831 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 01:17:24,832 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-13 01:17:24,834 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:17:24 BoogieIcfgContainer [2021-10-13 01:17:24,834 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 01:17:24,836 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 01:17:24,836 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 01:17:24,840 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 01:17:24,840 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 01:17:23" (1/3) ... [2021-10-13 01:17:24,841 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e9c57c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:17:24, skipping insertion in model container [2021-10-13 01:17:24,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:17:24" (2/3) ... [2021-10-13 01:17:24,842 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e9c57c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:17:24, skipping insertion in model container [2021-10-13 01:17:24,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:17:24" (3/3) ... [2021-10-13 01:17:24,844 INFO L111 eAbstractionObserver]: Analyzing ICFG Float_div.i [2021-10-13 01:17:24,850 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 01:17:24,851 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 01:17:24,906 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 01:17:24,914 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 01:17:24,914 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 01:17:24,930 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) [2021-10-13 01:17:24,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-13 01:17:24,936 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:17:24,937 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-13 01:17:24,937 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 01:17:24,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:17:24,944 INFO L82 PathProgramCache]: Analyzing trace with hash 889633835, now seen corresponding path program 1 times [2021-10-13 01:17:24,957 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 01:17:24,958 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1686792526] [2021-10-13 01:17:24,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:17:24,959 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 01:17:24,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c69eee-0bee-447c-84b4-e2a80a27b003/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 01:17:24,975 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c69eee-0bee-447c-84b4-e2a80a27b003/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 01:17:25,016 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c69eee-0bee-447c-84b4-e2a80a27b003/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 01:17:25,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:17:25,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 01:17:25,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:17:26,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:17:26,516 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 01:17:26,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:17:26,861 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 01:17:26,862 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1686792526] [2021-10-13 01:17:26,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1686792526] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 01:17:26,863 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:17:26,863 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-13 01:17:26,865 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999675092] [2021-10-13 01:17:26,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 01:17:26,871 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 01:17:26,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 01:17:26,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-13 01:17:26,888 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 5 states, 5 states have (on average 1.8) internal successors, (9), 5 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) [2021-10-13 01:17:29,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:17:29,715 INFO L93 Difference]: Finished difference Result 21 states and 27 transitions. [2021-10-13 01:17:29,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 01:17:29,717 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 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) Word has length 6 [2021-10-13 01:17:29,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:17:29,724 INFO L225 Difference]: With dead ends: 21 [2021-10-13 01:17:29,725 INFO L226 Difference]: Without dead ends: 9 [2021-10-13 01:17:29,727 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1868.4ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-13 01:17:29,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-10-13 01:17:29,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-10-13 01:17:29,753 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) [2021-10-13 01:17:29,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2021-10-13 01:17:29,755 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2021-10-13 01:17:29,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:17:29,756 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2021-10-13 01:17:29,757 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 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) [2021-10-13 01:17:29,757 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2021-10-13 01:17:29,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-13 01:17:29,758 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:17:29,758 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2021-10-13 01:17:29,773 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c69eee-0bee-447c-84b4-e2a80a27b003/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-10-13 01:17:29,973 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c69eee-0bee-447c-84b4-e2a80a27b003/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 01:17:29,973 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 01:17:29,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:17:29,975 INFO L82 PathProgramCache]: Analyzing trace with hash 292915403, now seen corresponding path program 1 times [2021-10-13 01:17:29,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 01:17:29,976 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [727773653] [2021-10-13 01:17:29,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:17:29,977 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 01:17:29,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c69eee-0bee-447c-84b4-e2a80a27b003/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 01:17:29,978 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c69eee-0bee-447c-84b4-e2a80a27b003/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 01:17:29,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c69eee-0bee-447c-84b4-e2a80a27b003/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-13 01:17:30,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:17:30,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 01:17:30,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:17:32,399 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:17:32,399 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 01:17:46,634 WARN L838 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) is different from false [2021-10-13 01:17:49,232 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2021-10-13 01:17:49,232 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 01:17:49,232 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [727773653] [2021-10-13 01:17:49,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [727773653] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 01:17:49,233 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 01:17:49,233 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-13 01:17:49,233 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921539298] [2021-10-13 01:17:49,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-13 01:17:49,235 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 01:17:49,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-13 01:17:49,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=38, Unknown=1, NotChecked=12, Total=72 [2021-10-13 01:17:49,238 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) [2021-10-13 01:18:11,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:18:11,402 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2021-10-13 01:18:11,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 01:18:11,403 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 [2021-10-13 01:18:11,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:18:11,404 INFO L225 Difference]: With dead ends: 16 [2021-10-13 01:18:11,404 INFO L226 Difference]: Without dead ends: 12 [2021-10-13 01:18:11,405 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 25255.1ms TimeCoverageRelationStatistics Valid=55, Invalid=104, Unknown=1, NotChecked=22, Total=182 [2021-10-13 01:18:11,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-10-13 01:18:11,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-10-13 01:18:11,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:18:11,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2021-10-13 01:18:11,409 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8 [2021-10-13 01:18:11,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:18:11,410 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2021-10-13 01:18:11,410 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) [2021-10-13 01:18:11,410 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2021-10-13 01:18:11,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-13 01:18:11,411 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:18:11,411 INFO L512 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1] [2021-10-13 01:18:11,432 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c69eee-0bee-447c-84b4-e2a80a27b003/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-13 01:18:11,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c69eee-0bee-447c-84b4-e2a80a27b003/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 01:18:11,624 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 01:18:11,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:18:11,625 INFO L82 PathProgramCache]: Analyzing trace with hash 522938704, now seen corresponding path program 2 times [2021-10-13 01:18:11,626 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 01:18:11,626 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1141115898] [2021-10-13 01:18:11,626 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 01:18:11,627 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 01:18:11,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c69eee-0bee-447c-84b4-e2a80a27b003/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 01:18:11,630 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c69eee-0bee-447c-84b4-e2a80a27b003/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 01:18:11,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c69eee-0bee-447c-84b4-e2a80a27b003/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-13 01:18:12,063 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 01:18:12,064 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 01:18:12,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 01:18:12,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:18:37,679 WARN L207 SmtUtils]: Spent 6.23 s on a formula simplification that was a NOOP. DAG size: 14 [2021-10-13 01:18:44,049 WARN L860 $PredicateComparison]: unable to prove that (and (= (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) .cse0) .cse0) .cse0) .cse0) .cse0)) c_ULTIMATE.start_main_~x1~0) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-10-13 01:19:13,048 WARN L207 SmtUtils]: Spent 7.13 s on a formula simplification that was a NOOP. DAG size: 18 [2021-10-13 01:19:13,094 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 5 refuted. 5 times theorem prover too weak. 0 trivial. 5 not checked. [2021-10-13 01:19:13,094 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 01:19:18,178 WARN L860 $PredicateComparison]: unable to prove that (or (not (fp.eq (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0))) c_ULTIMATE.start_main_~x1~0)) (fp.eq c_ULTIMATE.start_main_~x1~0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)))) is different from true [2021-10-13 01:19:28,555 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse1))) (or (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0))))) is different from false [2021-10-13 01:19:30,603 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse1))) (or (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0))))) is different from true [2021-10-13 01:19:41,159 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse1) .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)))))) is different from false [2021-10-13 01:19:43,227 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse1) .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)))))) is different from true [2021-10-13 01:19:53,963 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse1) .cse1) .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)))))) is different from false [2021-10-13 01:19:56,059 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse1) .cse1) .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)))))) is different from true [2021-10-13 01:20:06,997 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse1) .cse1) .cse1) .cse1))) (or (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0))))) is different from false [2021-10-13 01:20:09,123 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse1) .cse1) .cse1) .cse1))) (or (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0))))) is different from true [2021-10-13 01:20:19,948 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) .cse1) .cse1) .cse1) .cse1) .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)))))) is different from false [2021-10-13 01:20:22,047 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) .cse1) .cse1) .cse1) .cse1) .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)))))) is different from true [2021-10-13 01:20:22,047 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 15 not checked. [2021-10-13 01:20:22,048 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 01:20:22,048 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1141115898] [2021-10-13 01:20:22,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1141115898] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 01:20:22,048 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 01:20:22,048 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10] total 17 [2021-10-13 01:20:22,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735778337] [2021-10-13 01:20:22,049 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 01:20:22,049 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 01:20:22,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 01:20:22,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=77, Unknown=21, NotChecked=168, Total=306 [2021-10-13 01:20:22,052 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 18 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 17 states have internal predecessors, (21), 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) [2021-10-13 01:20:24,190 WARN L860 $PredicateComparison]: unable to prove that (and (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) .cse1) .cse1) .cse1) .cse1) .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-10-13 01:20:26,314 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (and (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse1) .cse1) .cse1) .cse1))) (or (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) (= (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) .cse1) c_ULTIMATE.start_main_~x1~0) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-10-13 01:20:28,422 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (and (= c_ULTIMATE.start_main_~x1~0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) .cse0) .cse0)) (let ((.cse1 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse0) .cse0) .cse0))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse1 .cse0) .cse1)) (fp.eq .cse1 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))))) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-10-13 01:20:30,488 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (and (= c_ULTIMATE.start_main_~x1~0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) .cse0) .cse0) .cse0)) (= c_currentRoundingMode roundNearestTiesToEven) (let ((.cse1 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse0) .cse0))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse1 .cse0) .cse1)) (fp.eq .cse1 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))))))) is different from false [2021-10-13 01:20:32,553 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (and (= c_ULTIMATE.start_main_~x1~0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) .cse0) .cse0) .cse0)) (= c_currentRoundingMode roundNearestTiesToEven) (let ((.cse1 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse0) .cse0))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse1 .cse0) .cse1)) (fp.eq .cse1 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))))))) is different from true [2021-10-13 01:20:34,606 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (and (let ((.cse0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse1))) (or (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) (= (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) .cse1) .cse1) .cse1) .cse1) c_ULTIMATE.start_main_~x1~0) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-10-13 01:21:05,176 WARN L207 SmtUtils]: Spent 10.02 s on a formula simplification. DAG size of input: 22 DAG size of output: 15 [2021-10-13 01:21:11,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:21:11,144 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2021-10-13 01:21:11,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-13 01:21:11,145 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 17 states have internal predecessors, (21), 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 11 [2021-10-13 01:21:11,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:21:11,146 INFO L225 Difference]: With dead ends: 20 [2021-10-13 01:21:11,157 INFO L226 Difference]: Without dead ends: 14 [2021-10-13 01:21:11,158 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 12 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 116147.6ms TimeCoverageRelationStatistics Valid=72, Invalid=152, Unknown=34, NotChecked=444, Total=702 [2021-10-13 01:21:11,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-10-13 01:21:11,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-10-13 01:21:11,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 13 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:21:11,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2021-10-13 01:21:11,161 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 11 [2021-10-13 01:21:11,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:21:11,162 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2021-10-13 01:21:11,162 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 17 states have internal predecessors, (21), 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) [2021-10-13 01:21:11,162 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2021-10-13 01:21:11,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-13 01:21:11,163 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:21:11,163 INFO L512 BasicCegarLoop]: trace histogram [7, 1, 1, 1, 1, 1, 1] [2021-10-13 01:21:11,175 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c69eee-0bee-447c-84b4-e2a80a27b003/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-13 01:21:11,363 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c69eee-0bee-447c-84b4-e2a80a27b003/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 01:21:11,364 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 01:21:11,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:21:11,364 INFO L82 PathProgramCache]: Analyzing trace with hash 86212784, now seen corresponding path program 3 times [2021-10-13 01:21:11,365 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 01:21:11,365 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1881737558] [2021-10-13 01:21:11,365 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 01:21:11,366 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 01:21:11,366 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c69eee-0bee-447c-84b4-e2a80a27b003/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 01:21:11,367 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c69eee-0bee-447c-84b4-e2a80a27b003/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 01:21:11,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c69eee-0bee-447c-84b4-e2a80a27b003/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-13 01:21:11,665 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-13 01:21:11,665 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 01:21:11,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 01:21:11,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:21:40,171 WARN L207 SmtUtils]: Spent 11.81 s on a formula simplification that was a NOOP. DAG size: 17 [2021-10-13 01:21:53,849 WARN L838 $PredicateComparison]: unable to prove that (and (fp.eq (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x~0 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0))) c_ULTIMATE.start_main_~x~0) (exists ((v_ULTIMATE.start_main_~x~0_18 (_ FloatingPoint 8 24))) (and (= (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~x~0_18 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0))) c_ULTIMATE.start_main_~x~0) (not (fp.eq c_ULTIMATE.start_main_~x~0 v_ULTIMATE.start_main_~x~0_18)))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-10-13 01:22:44,071 WARN L838 $PredicateComparison]: unable to prove that (exists ((v_ULTIMATE.start_main_~x~0_18 (_ FloatingPoint 8 24))) (let ((.cse2 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse1 (fp.div roundNearestTiesToEven v_ULTIMATE.start_main_~x~0_18 .cse2))) (and (let ((.cse0 (fp.eq .cse1 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32))))) (or (and .cse0 (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32))) (and (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)) (not .cse0)))) (not (fp.eq .cse1 v_ULTIMATE.start_main_~x~0_18)) (fp.eq (fp.div roundNearestTiesToEven .cse1 .cse2) .cse1))))) is different from false [2021-10-13 01:22:46,103 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ULTIMATE.start_main_~x~0_18 (_ FloatingPoint 8 24))) (let ((.cse2 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse1 (fp.div roundNearestTiesToEven v_ULTIMATE.start_main_~x~0_18 .cse2))) (and (let ((.cse0 (fp.eq .cse1 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32))))) (or (and .cse0 (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32))) (and (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)) (not .cse0)))) (not (fp.eq .cse1 v_ULTIMATE.start_main_~x~0_18)) (fp.eq (fp.div roundNearestTiesToEven .cse1 .cse2) .cse1))))) is different from true [2021-10-13 01:23:02,684 WARN L838 $PredicateComparison]: unable to prove that (exists ((v_ULTIMATE.start_main_~x~0_18 (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven v_ULTIMATE.start_main_~x~0_18 .cse1))) (and (not (fp.eq .cse0 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32)))) (not (fp.eq .cse0 v_ULTIMATE.start_main_~x~0_18)) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0))))) is different from false [2021-10-13 01:23:04,718 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ULTIMATE.start_main_~x~0_18 (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven v_ULTIMATE.start_main_~x~0_18 .cse1))) (and (not (fp.eq .cse0 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32)))) (not (fp.eq .cse0 v_ULTIMATE.start_main_~x~0_18)) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0))))) is different from true [2021-10-13 01:23:04,719 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-13 01:23:04,719 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 01:23:42,874 WARN L207 SmtUtils]: Spent 6.91 s on a formula simplification that was a NOOP. DAG size: 13 [2021-10-13 01:23:56,987 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~x~0_20 (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~x~0_20 .cse1))) (or (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))) (fp.eq .cse0 v_ULTIMATE.start_main_~x~0_20) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))))) is different from false [2021-10-13 01:23:59,033 WARN L860 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~x~0_20 (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~x~0_20 .cse1))) (or (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))) (fp.eq .cse0 v_ULTIMATE.start_main_~x~0_20) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))))) is different from true [2021-10-13 01:25:12,158 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 1 times theorem prover too weak. 15 trivial. 12 not checked. [2021-10-13 01:25:12,158 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 01:25:12,159 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1881737558] [2021-10-13 01:25:12,159 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1881737558] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-13 01:25:12,159 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-13 01:25:12,159 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 12 [2021-10-13 01:25:12,159 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200106243] [2021-10-13 01:25:12,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 01:25:12,160 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 01:25:12,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 01:25:12,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=16, NotChecked=68, Total=156 [2021-10-13 01:25:12,161 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 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) [2021-10-13 01:25:18,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:25:18,341 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2021-10-13 01:25:18,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 01:25:18,387 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 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) Word has length 13 [2021-10-13 01:25:18,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:25:18,387 INFO L225 Difference]: With dead ends: 14 [2021-10-13 01:25:18,387 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 01:25:18,388 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 62960.4ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=16, NotChecked=68, Total=156 [2021-10-13 01:25:18,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 01:25:18,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 01:25:18,388 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) [2021-10-13 01:25:18,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 01:25:18,388 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2021-10-13 01:25:18,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:25:18,389 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 01:25:18,389 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 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) [2021-10-13 01:25:18,389 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 01:25:18,389 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 01:25:18,396 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 01:25:18,416 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c69eee-0bee-447c-84b4-e2a80a27b003/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-13 01:25:18,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c69eee-0bee-447c-84b4-e2a80a27b003/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 01:25:18,603 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-13 01:25:18,606 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:25:18,641 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:25:18,665 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:25:31,299 WARN L207 SmtUtils]: Spent 12.62 s on a formula simplification that was a NOOP. DAG size: 17 [2021-10-13 01:25:31,312 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-13 01:25:31,313 INFO L853 garLoopResultBuilder]: At program point L23-2(lines 23 27) the Hoare annotation is: (and (= (fp.div currentRoundingMode ULTIMATE.start_main_~x~0 ((_ to_fp 8 24) currentRoundingMode (/ 5.0 2.0))) ULTIMATE.start_main_~x1~0) (exists ((v_ULTIMATE.start_main_~x~0_18 (_ FloatingPoint 8 24))) (and (= (fp.div currentRoundingMode v_ULTIMATE.start_main_~x~0_18 ((_ to_fp 8 24) currentRoundingMode (/ 5.0 2.0))) ULTIMATE.start_main_~x~0) (not (fp.eq ULTIMATE.start_main_~x~0 v_ULTIMATE.start_main_~x~0_18)))) (= currentRoundingMode roundNearestTiesToEven)) [2021-10-13 01:25:31,313 INFO L857 garLoopResultBuilder]: For program point L23-3(lines 23 27) no Hoare annotation was computed. [2021-10-13 01:25:31,313 INFO L857 garLoopResultBuilder]: For program point L13(line 13) no Hoare annotation was computed. [2021-10-13 01:25:31,313 INFO L857 garLoopResultBuilder]: For program point L13-1(line 13) no Hoare annotation was computed. [2021-10-13 01:25:31,314 INFO L853 garLoopResultBuilder]: At program point L13-3(line 13) the Hoare annotation is: (= currentRoundingMode roundNearestTiesToEven) [2021-10-13 01:25:31,314 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-13 01:25:31,314 INFO L853 garLoopResultBuilder]: At program point L30(lines 18 31) the Hoare annotation is: (= currentRoundingMode roundNearestTiesToEven) [2021-10-13 01:25:31,314 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-13 01:25:31,314 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-13 01:25:31,315 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-10-13 01:25:31,320 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 01:25:31,329 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-13 01:25:31,333 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-13 01:25:31,336 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_18,QUANTIFIED] [2021-10-13 01:25:31,336 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_18,QUANTIFIED] [2021-10-13 01:25:31,336 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-13 01:25:31,338 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_18,QUANTIFIED] [2021-10-13 01:25:31,338 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_18,QUANTIFIED] [2021-10-13 01:25:31,339 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-13 01:25:31,340 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-13 01:25:31,342 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-13 01:25:31,344 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 01:25:31 BoogieIcfgContainer [2021-10-13 01:25:31,345 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 01:25:31,345 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 01:25:31,346 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 01:25:31,346 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 01:25:31,346 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:17:24" (3/4) ... [2021-10-13 01:25:31,352 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-13 01:25:31,365 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-10-13 01:25:31,366 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-13 01:25:31,366 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 01:25:31,366 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 01:25:31,403 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (~fp.div~FLOAT(unknown-currentRoundingMode-unknown, x, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 5/2)) == x1 && (\exists v_ULTIMATE.start_main_~x~0_18 : C_FLOAT :: ~fp.div~FLOAT(unknown-currentRoundingMode-unknown, v_ULTIMATE.start_main_~x~0_18, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 5/2)) == x && !~fp.eq~FLOAT(x, v_ULTIMATE.start_main_~x~0_18))) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven [2021-10-13 01:25:31,429 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c69eee-0bee-447c-84b4-e2a80a27b003/bin/uautomizer-WNIpwEf4Nt/witness.graphml [2021-10-13 01:25:31,440 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 01:25:31,442 INFO L168 Benchmark]: Toolchain (without parser) took 487702.01 ms. Allocated memory is still 77.6 MB. Free memory was 55.3 MB in the beginning and 48.8 MB in the end (delta: 6.5 MB). Peak memory consumption was 5.3 MB. Max. memory is 16.1 GB. [2021-10-13 01:25:31,442 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 54.5 MB. Free memory is still 35.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 01:25:31,443 INFO L168 Benchmark]: CACSL2BoogieTranslator took 302.20 ms. Allocated memory is still 77.6 MB. Free memory was 55.0 MB in the beginning and 61.0 MB in the end (delta: -5.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-13 01:25:31,443 INFO L168 Benchmark]: Boogie Procedure Inliner took 63.92 ms. Allocated memory is still 77.6 MB. Free memory was 61.0 MB in the beginning and 59.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 01:25:31,444 INFO L168 Benchmark]: Boogie Preprocessor took 57.79 ms. Allocated memory is still 77.6 MB. Free memory was 59.3 MB in the beginning and 58.3 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 01:25:31,445 INFO L168 Benchmark]: RCFGBuilder took 664.19 ms. Allocated memory is still 77.6 MB. Free memory was 58.3 MB in the beginning and 49.5 MB in the end (delta: 8.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 01:25:31,445 INFO L168 Benchmark]: TraceAbstraction took 486508.60 ms. Allocated memory is still 77.6 MB. Free memory was 49.1 MB in the beginning and 51.3 MB in the end (delta: -2.2 MB). Peak memory consumption was 237.5 kB. Max. memory is 16.1 GB. [2021-10-13 01:25:31,446 INFO L168 Benchmark]: Witness Printer took 95.00 ms. Allocated memory is still 77.6 MB. Free memory was 51.3 MB in the beginning and 48.8 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 01:25:31,449 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 54.5 MB. Free memory is still 35.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 302.20 ms. Allocated memory is still 77.6 MB. Free memory was 55.0 MB in the beginning and 61.0 MB in the end (delta: -5.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 63.92 ms. Allocated memory is still 77.6 MB. Free memory was 61.0 MB in the beginning and 59.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 57.79 ms. Allocated memory is still 77.6 MB. Free memory was 59.3 MB in the beginning and 58.3 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 664.19 ms. Allocated memory is still 77.6 MB. Free memory was 58.3 MB in the beginning and 49.5 MB in the end (delta: 8.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 486508.60 ms. Allocated memory is still 77.6 MB. Free memory was 49.1 MB in the beginning and 51.3 MB in the end (delta: -2.2 MB). Peak memory consumption was 237.5 kB. Max. memory is 16.1 GB. * Witness Printer took 95.00 ms. Allocated memory is still 77.6 MB. Free memory was 51.3 MB in the beginning and 48.8 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.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 - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_18,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_18,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_18,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_18,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - 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, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 13]: 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: 486416.4ms, OverallIterations: 4, TraceHistogramMax: 7, EmptinessCheckTime: 12.8ms, AutomataDifference: 80360.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 12710.0ms, InitialAbstractionConstructionTime: 10.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 16 SDtfs, 26 SDslu, 24 SDs, 0 SdLazy, 65 SolverSat, 18 SolverUnsat, 7 SolverUnknown, 0 SolverNotchecked, 22299.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 84 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 17 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 206231.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=3, InterpolantAutomatonStates: 33, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 23.8ms AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 12 NumberOfFragments, 32 HoareAnnotationTreeSize, 3 FomulaSimplifications, 594 FormulaSimplificationTreeSizeReduction, 60.6ms HoareSimplificationTime, 3 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 12643.0ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 66.6ms SsaConstructionTime, 898.4ms SatisfiabilityAnalysisTime, 391197.2ms InterpolantComputationTime, 38 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 68 ConstructedInterpolants, 11 QuantifiedInterpolants, 1131 SizeOfPredicates, 19 NumberOfNonLiveVariables, 133 ConjunctsInSsa, 38 ConjunctsInUnsatCore, 8 InterpolantComputations, 3 PerfectInterpolantSequences, 43/92 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 18]: Loop Invariant [2021-10-13 01:25:31,480 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-13 01:25:31,480 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven - InvariantResult [Line: 23]: Loop Invariant [2021-10-13 01:25:31,481 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_18,QUANTIFIED] [2021-10-13 01:25:31,481 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_18,QUANTIFIED] [2021-10-13 01:25:31,481 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-13 01:25:31,482 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_18,QUANTIFIED] [2021-10-13 01:25:31,482 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_18,QUANTIFIED] [2021-10-13 01:25:31,482 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: (~fp.div~FLOAT(unknown-currentRoundingMode-unknown, x, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 5/2)) == x1 && (\exists v_ULTIMATE.start_main_~x~0_18 : C_FLOAT :: ~fp.div~FLOAT(unknown-currentRoundingMode-unknown, v_ULTIMATE.start_main_~x~0_18, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 5/2)) == x && !~fp.eq~FLOAT(x, v_ULTIMATE.start_main_~x~0_18))) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven - InvariantResult [Line: 13]: Loop Invariant [2021-10-13 01:25:31,483 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-13 01:25:31,483 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven RESULT: Ultimate proved your program to be correct! [2021-10-13 01:25:31,629 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1c69eee-0bee-447c-84b4-e2a80a27b003/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...