./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cdfpl/newton_1_8.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_86a303a6-73a7-4ee5-b68b-dbac184c3bf1/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86a303a6-73a7-4ee5-b68b-dbac184c3bf1/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_86a303a6-73a7-4ee5-b68b-dbac184c3bf1/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86a303a6-73a7-4ee5-b68b-dbac184c3bf1/bin/uautomizer-WNIpwEf4Nt/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/newton_1_8.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86a303a6-73a7-4ee5-b68b-dbac184c3bf1/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_86a303a6-73a7-4ee5-b68b-dbac184c3bf1/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 9a455407b4fd80f1691ee95c228274faaa3c38f0 ................................................................................................................................................................................................................................................................................. 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_86a303a6-73a7-4ee5-b68b-dbac184c3bf1/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86a303a6-73a7-4ee5-b68b-dbac184c3bf1/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_86a303a6-73a7-4ee5-b68b-dbac184c3bf1/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86a303a6-73a7-4ee5-b68b-dbac184c3bf1/bin/uautomizer-WNIpwEf4Nt/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/newton_1_8.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86a303a6-73a7-4ee5-b68b-dbac184c3bf1/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_86a303a6-73a7-4ee5-b68b-dbac184c3bf1/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 9a455407b4fd80f1691ee95c228274faaa3c38f0 ............................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 00:29:55,663 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 00:29:55,666 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 00:29:55,723 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 00:29:55,724 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 00:29:55,729 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 00:29:55,731 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 00:29:55,735 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 00:29:55,738 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 00:29:55,749 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 00:29:55,750 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 00:29:55,752 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 00:29:55,753 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 00:29:55,756 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 00:29:55,758 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 00:29:55,763 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 00:29:55,765 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 00:29:55,766 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 00:29:55,769 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 00:29:55,777 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 00:29:55,779 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 00:29:55,780 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 00:29:55,783 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 00:29:55,785 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 00:29:55,794 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 00:29:55,795 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 00:29:55,796 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 00:29:55,798 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 00:29:55,799 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 00:29:55,800 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 00:29:55,801 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 00:29:55,802 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 00:29:55,804 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 00:29:55,805 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 00:29:55,807 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 00:29:55,807 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 00:29:55,808 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 00:29:55,808 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 00:29:55,809 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 00:29:55,810 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 00:29:55,811 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 00:29:55,812 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86a303a6-73a7-4ee5-b68b-dbac184c3bf1/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-13 00:29:55,859 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 00:29:55,859 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 00:29:55,873 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 00:29:55,873 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 00:29:55,876 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 00:29:55,876 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 00:29:55,876 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 00:29:55,877 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 00:29:55,877 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 00:29:55,877 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 00:29:55,878 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 00:29:55,878 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 00:29:55,879 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 00:29:55,879 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 00:29:55,879 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 00:29:55,880 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 00:29:55,880 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 00:29:55,880 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 00:29:55,880 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 00:29:55,881 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 00:29:55,881 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 00:29:55,881 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 00:29:55,881 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 00:29:55,882 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 00:29:55,882 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 00:29:55,882 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 00:29:55,883 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-13 00:29:55,883 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 00:29:55,883 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 00:29:55,885 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 00:29:55,885 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_86a303a6-73a7-4ee5-b68b-dbac184c3bf1/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86a303a6-73a7-4ee5-b68b-dbac184c3bf1/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9a455407b4fd80f1691ee95c228274faaa3c38f0 [2021-10-13 00:29:56,171 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 00:29:56,198 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 00:29:56,201 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 00:29:56,202 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 00:29:56,203 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 00:29:56,204 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86a303a6-73a7-4ee5-b68b-dbac184c3bf1/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/floats-cdfpl/newton_1_8.i [2021-10-13 00:29:56,279 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86a303a6-73a7-4ee5-b68b-dbac184c3bf1/bin/uautomizer-WNIpwEf4Nt/data/edc4136bf/c6d023a625ba4897b126c74c042b57db/FLAG721a6e8ce [2021-10-13 00:29:56,893 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 00:29:56,894 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86a303a6-73a7-4ee5-b68b-dbac184c3bf1/sv-benchmarks/c/floats-cdfpl/newton_1_8.i [2021-10-13 00:29:56,907 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86a303a6-73a7-4ee5-b68b-dbac184c3bf1/bin/uautomizer-WNIpwEf4Nt/data/edc4136bf/c6d023a625ba4897b126c74c042b57db/FLAG721a6e8ce [2021-10-13 00:29:57,247 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86a303a6-73a7-4ee5-b68b-dbac184c3bf1/bin/uautomizer-WNIpwEf4Nt/data/edc4136bf/c6d023a625ba4897b126c74c042b57db [2021-10-13 00:29:57,251 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 00:29:57,254 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 00:29:57,260 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 00:29:57,260 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 00:29:57,265 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 00:29:57,266 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:29:57" (1/1) ... [2021-10-13 00:29:57,267 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64248940 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:29:57, skipping insertion in model container [2021-10-13 00:29:57,267 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:29:57" (1/1) ... [2021-10-13 00:29:57,276 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 00:29:57,296 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 00:29:57,533 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_86a303a6-73a7-4ee5-b68b-dbac184c3bf1/sv-benchmarks/c/floats-cdfpl/newton_1_8.i[1224,1237] [2021-10-13 00:29:57,539 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:29:57,549 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 00:29:57,569 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_86a303a6-73a7-4ee5-b68b-dbac184c3bf1/sv-benchmarks/c/floats-cdfpl/newton_1_8.i[1224,1237] [2021-10-13 00:29:57,570 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:29:57,585 INFO L208 MainTranslator]: Completed translation [2021-10-13 00:29:57,585 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:29:57 WrapperNode [2021-10-13 00:29:57,586 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 00:29:57,587 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 00:29:57,587 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 00:29:57,588 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 00:29:57,596 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:29:57" (1/1) ... [2021-10-13 00:29:57,605 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:29:57" (1/1) ... [2021-10-13 00:29:57,625 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 00:29:57,626 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 00:29:57,627 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 00:29:57,627 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 00:29:57,636 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:29:57" (1/1) ... [2021-10-13 00:29:57,636 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:29:57" (1/1) ... [2021-10-13 00:29:57,638 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:29:57" (1/1) ... [2021-10-13 00:29:57,638 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:29:57" (1/1) ... [2021-10-13 00:29:57,644 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:29:57" (1/1) ... [2021-10-13 00:29:57,646 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:29:57" (1/1) ... [2021-10-13 00:29:57,648 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:29:57" (1/1) ... [2021-10-13 00:29:57,649 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 00:29:57,650 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 00:29:57,651 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 00:29:57,651 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 00:29:57,652 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:29:57" (1/1) ... [2021-10-13 00:29:57,660 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 00:29:57,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86a303a6-73a7-4ee5-b68b-dbac184c3bf1/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:29:57,689 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86a303a6-73a7-4ee5-b68b-dbac184c3bf1/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 00:29:57,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86a303a6-73a7-4ee5-b68b-dbac184c3bf1/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 00:29:57,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 00:29:57,734 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 00:29:57,735 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 00:29:57,736 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 00:29:57,924 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 00:29:57,924 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-13 00:29:57,926 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:29:57 BoogieIcfgContainer [2021-10-13 00:29:57,926 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 00:29:57,928 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 00:29:57,928 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 00:29:57,932 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 00:29:57,932 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 12:29:57" (1/3) ... [2021-10-13 00:29:57,933 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@787a36fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:29:57, skipping insertion in model container [2021-10-13 00:29:57,933 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:29:57" (2/3) ... [2021-10-13 00:29:57,934 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@787a36fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:29:57, skipping insertion in model container [2021-10-13 00:29:57,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:29:57" (3/3) ... [2021-10-13 00:29:57,935 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_1_8.i [2021-10-13 00:29:57,941 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 00:29:57,942 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 00:29:58,026 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 00:29:58,034 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 00:29:58,034 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 00:29:58,081 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:29:58,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-13 00:29:58,087 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:29:58,088 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:29:58,103 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:29:58,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:29:58,110 INFO L82 PathProgramCache]: Analyzing trace with hash 119351050, now seen corresponding path program 1 times [2021-10-13 00:29:58,119 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:29:58,135 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321453815] [2021-10-13 00:29:58,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:29:58,137 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:29:58,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:29:58,348 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 00:29:58,349 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:29:58,350 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321453815] [2021-10-13 00:29:58,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321453815] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:29:58,351 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:29:58,351 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 00:29:58,353 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953938692] [2021-10-13 00:29:58,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-13 00:29:58,359 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:29:58,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-13 00:29:58,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 00:29:58,391 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:29:58,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:29:58,407 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2021-10-13 00:29:58,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-13 00:29:58,409 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-13 00:29:58,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:29:58,417 INFO L225 Difference]: With dead ends: 23 [2021-10-13 00:29:58,418 INFO L226 Difference]: Without dead ends: 9 [2021-10-13 00:29:58,422 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 00:29:58,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-10-13 00:29:58,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-10-13 00:29:58,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.0) internal successors, (8), 8 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:29:58,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 8 transitions. [2021-10-13 00:29:58,456 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 8 transitions. Word has length 8 [2021-10-13 00:29:58,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:29:58,457 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 8 transitions. [2021-10-13 00:29:58,457 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:29:58,458 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2021-10-13 00:29:58,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-13 00:29:58,459 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:29:58,459 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:29:58,460 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 00:29:58,460 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:29:58,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:29:58,464 INFO L82 PathProgramCache]: Analyzing trace with hash 176609352, now seen corresponding path program 1 times [2021-10-13 00:29:58,464 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:29:58,464 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652474705] [2021-10-13 00:29:58,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:29:58,465 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:29:58,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:29:58,503 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:29:58,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:29:58,562 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:29:58,562 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-13 00:29:58,564 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 00:29:58,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-13 00:29:58,573 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 00:29:58,601 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 12:29:58 BoogieIcfgContainer [2021-10-13 00:29:58,602 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 00:29:58,603 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 00:29:58,604 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 00:29:58,604 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 00:29:58,604 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:29:57" (3/4) ... [2021-10-13 00:29:58,608 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-13 00:29:58,609 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 00:29:58,612 INFO L168 Benchmark]: Toolchain (without parser) took 1355.53 ms. Allocated memory is still 102.8 MB. Free memory was 59.1 MB in the beginning and 43.3 MB in the end (delta: 15.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-13 00:29:58,613 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 102.8 MB. Free memory was 75.3 MB in the beginning and 75.2 MB in the end (delta: 63.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:29:58,615 INFO L168 Benchmark]: CACSL2BoogieTranslator took 326.07 ms. Allocated memory is still 102.8 MB. Free memory was 58.9 MB in the beginning and 77.0 MB in the end (delta: -18.1 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-13 00:29:58,617 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.76 ms. Allocated memory is still 102.8 MB. Free memory was 77.0 MB in the beginning and 75.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 00:29:58,623 INFO L168 Benchmark]: Boogie Preprocessor took 23.22 ms. Allocated memory is still 102.8 MB. Free memory was 75.3 MB in the beginning and 74.3 MB in the end (delta: 965.7 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 00:29:58,624 INFO L168 Benchmark]: RCFGBuilder took 276.15 ms. Allocated memory is still 102.8 MB. Free memory was 74.3 MB in the beginning and 65.4 MB in the end (delta: 9.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 00:29:58,625 INFO L168 Benchmark]: TraceAbstraction took 674.03 ms. Allocated memory is still 102.8 MB. Free memory was 65.1 MB in the beginning and 43.6 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2021-10-13 00:29:58,626 INFO L168 Benchmark]: Witness Printer took 5.37 ms. Allocated memory is still 102.8 MB. Free memory was 43.6 MB in the beginning and 43.3 MB in the end (delta: 271.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:29:58,635 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 102.8 MB. Free memory was 75.3 MB in the beginning and 75.2 MB in the end (delta: 63.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 326.07 ms. Allocated memory is still 102.8 MB. Free memory was 58.9 MB in the beginning and 77.0 MB in the end (delta: -18.1 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 38.76 ms. Allocated memory is still 102.8 MB. Free memory was 77.0 MB in the beginning and 75.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 23.22 ms. Allocated memory is still 102.8 MB. Free memory was 75.3 MB in the beginning and 74.3 MB in the end (delta: 965.7 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 276.15 ms. Allocated memory is still 102.8 MB. Free memory was 74.3 MB in the beginning and 65.4 MB in the end (delta: 9.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 674.03 ms. Allocated memory is still 102.8 MB. Free memory was 65.1 MB in the beginning and 43.6 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * Witness Printer took 5.37 ms. Allocated memory is still 102.8 MB. Free memory was 43.6 MB in the beginning and 43.3 MB in the end (delta: 271.5 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: 42]: 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 31, overapproximation of someBinaryDOUBLEComparisonOperation at line 41, overapproximation of someBinaryArithmeticFLOAToperation at line 33. Possible FailurePath: [L30] float IN = __VERIFIER_nondet_float(); [L15] COND FALSE !(!cond) [L20] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L25] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L33] float x = IN - f(IN)/fp(IN); [L41] COND TRUE !(x < 0.1) [L42] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 546.9ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 26.8ms, AutomataDifference: 61.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 26.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 12 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 17.7ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 25.5ms SsaConstructionTime, 61.2ms SatisfiabilityAnalysisTime, 88.3ms InterpolantComputationTime, 16 NumberOfCodeBlocks, 16 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 7 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-13 00:29:58,695 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86a303a6-73a7-4ee5-b68b-dbac184c3bf1/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 00:30:01,282 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 00:30:01,286 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 00:30:01,328 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 00:30:01,329 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 00:30:01,335 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 00:30:01,337 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 00:30:01,345 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 00:30:01,349 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 00:30:01,357 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 00:30:01,358 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 00:30:01,361 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 00:30:01,361 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 00:30:01,364 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 00:30:01,367 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 00:30:01,373 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 00:30:01,375 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 00:30:01,376 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 00:30:01,379 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 00:30:01,386 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 00:30:01,389 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 00:30:01,392 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 00:30:01,394 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 00:30:01,395 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 00:30:01,399 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 00:30:01,399 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 00:30:01,399 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 00:30:01,401 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 00:30:01,401 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 00:30:01,403 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 00:30:01,403 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 00:30:01,404 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 00:30:01,405 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 00:30:01,406 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 00:30:01,407 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 00:30:01,408 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 00:30:01,408 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 00:30:01,409 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 00:30:01,409 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 00:30:01,410 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 00:30:01,411 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 00:30:01,412 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86a303a6-73a7-4ee5-b68b-dbac184c3bf1/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-10-13 00:30:01,440 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 00:30:01,443 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 00:30:01,444 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 00:30:01,444 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 00:30:01,446 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 00:30:01,446 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 00:30:01,447 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 00:30:01,447 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 00:30:01,447 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 00:30:01,447 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 00:30:01,449 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 00:30:01,449 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 00:30:01,449 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 00:30:01,449 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 00:30:01,449 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 00:30:01,450 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 00:30:01,450 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 00:30:01,450 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 00:30:01,450 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 00:30:01,451 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 00:30:01,451 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 00:30:01,451 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 00:30:01,451 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 00:30:01,452 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 00:30:01,452 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 00:30:01,452 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 00:30:01,452 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 00:30:01,452 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-13 00:30:01,453 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 00:30:01,453 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 00:30:01,453 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 00:30:01,453 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 00:30:01,454 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_86a303a6-73a7-4ee5-b68b-dbac184c3bf1/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86a303a6-73a7-4ee5-b68b-dbac184c3bf1/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9a455407b4fd80f1691ee95c228274faaa3c38f0 [2021-10-13 00:30:01,896 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 00:30:01,923 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 00:30:01,926 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 00:30:01,927 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 00:30:01,928 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 00:30:01,929 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86a303a6-73a7-4ee5-b68b-dbac184c3bf1/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/floats-cdfpl/newton_1_8.i [2021-10-13 00:30:02,005 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86a303a6-73a7-4ee5-b68b-dbac184c3bf1/bin/uautomizer-WNIpwEf4Nt/data/70dcdcaf5/3f10aa39644c4a088e270e890ea4c014/FLAGc9b531806 [2021-10-13 00:30:02,583 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 00:30:02,584 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86a303a6-73a7-4ee5-b68b-dbac184c3bf1/sv-benchmarks/c/floats-cdfpl/newton_1_8.i [2021-10-13 00:30:02,593 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86a303a6-73a7-4ee5-b68b-dbac184c3bf1/bin/uautomizer-WNIpwEf4Nt/data/70dcdcaf5/3f10aa39644c4a088e270e890ea4c014/FLAGc9b531806 [2021-10-13 00:30:02,916 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86a303a6-73a7-4ee5-b68b-dbac184c3bf1/bin/uautomizer-WNIpwEf4Nt/data/70dcdcaf5/3f10aa39644c4a088e270e890ea4c014 [2021-10-13 00:30:02,918 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 00:30:02,920 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 00:30:02,922 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 00:30:02,922 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 00:30:02,938 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 00:30:02,938 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:30:02" (1/1) ... [2021-10-13 00:30:02,940 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11083dc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:30:02, skipping insertion in model container [2021-10-13 00:30:02,940 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:30:02" (1/1) ... [2021-10-13 00:30:02,957 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 00:30:02,973 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 00:30:03,153 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_86a303a6-73a7-4ee5-b68b-dbac184c3bf1/sv-benchmarks/c/floats-cdfpl/newton_1_8.i[1224,1237] [2021-10-13 00:30:03,156 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:30:03,183 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 00:30:03,229 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_86a303a6-73a7-4ee5-b68b-dbac184c3bf1/sv-benchmarks/c/floats-cdfpl/newton_1_8.i[1224,1237] [2021-10-13 00:30:03,230 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:30:03,263 INFO L208 MainTranslator]: Completed translation [2021-10-13 00:30:03,265 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:30:03 WrapperNode [2021-10-13 00:30:03,266 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 00:30:03,267 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 00:30:03,267 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 00:30:03,267 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 00:30:03,277 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:30:03" (1/1) ... [2021-10-13 00:30:03,301 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:30:03" (1/1) ... [2021-10-13 00:30:03,333 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 00:30:03,335 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 00:30:03,335 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 00:30:03,335 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 00:30:03,345 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:30:03" (1/1) ... [2021-10-13 00:30:03,346 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:30:03" (1/1) ... [2021-10-13 00:30:03,354 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:30:03" (1/1) ... [2021-10-13 00:30:03,354 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:30:03" (1/1) ... [2021-10-13 00:30:03,377 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:30:03" (1/1) ... [2021-10-13 00:30:03,388 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:30:03" (1/1) ... [2021-10-13 00:30:03,390 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:30:03" (1/1) ... [2021-10-13 00:30:03,393 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 00:30:03,396 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 00:30:03,397 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 00:30:03,397 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 00:30:03,398 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:30:03" (1/1) ... [2021-10-13 00:30:03,407 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 00:30:03,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86a303a6-73a7-4ee5-b68b-dbac184c3bf1/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:30:03,441 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86a303a6-73a7-4ee5-b68b-dbac184c3bf1/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 00:30:03,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86a303a6-73a7-4ee5-b68b-dbac184c3bf1/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 00:30:03,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-13 00:30:03,511 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 00:30:03,511 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 00:30:03,511 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 00:30:10,481 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 00:30:10,481 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-13 00:30:10,483 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:30:10 BoogieIcfgContainer [2021-10-13 00:30:10,483 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 00:30:10,486 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 00:30:10,486 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 00:30:10,489 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 00:30:10,490 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 12:30:02" (1/3) ... [2021-10-13 00:30:10,490 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@203beed4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:30:10, skipping insertion in model container [2021-10-13 00:30:10,491 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:30:03" (2/3) ... [2021-10-13 00:30:10,491 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@203beed4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:30:10, skipping insertion in model container [2021-10-13 00:30:10,492 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:30:10" (3/3) ... [2021-10-13 00:30:10,493 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_1_8.i [2021-10-13 00:30:10,500 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 00:30:10,500 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 00:30:10,558 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 00:30:10,565 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 00:30:10,565 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 00:30:10,579 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:30:10,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-13 00:30:10,584 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:30:10,585 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:30:10,586 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:30:10,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:30:10,591 INFO L82 PathProgramCache]: Analyzing trace with hash 119351050, now seen corresponding path program 1 times [2021-10-13 00:30:10,603 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:30:10,604 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2013804618] [2021-10-13 00:30:10,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:30:10,605 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:30:10,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86a303a6-73a7-4ee5-b68b-dbac184c3bf1/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:30:10,608 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86a303a6-73a7-4ee5-b68b-dbac184c3bf1/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:30:10,609 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86a303a6-73a7-4ee5-b68b-dbac184c3bf1/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 00:30:11,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:30:11,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-13 00:30:11,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:30:12,091 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 00:30:12,092 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:30:12,154 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 00:30:12,155 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:30:12,156 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2013804618] [2021-10-13 00:30:12,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2013804618] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:30:12,157 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:30:12,157 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-13 00:30:12,160 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103835615] [2021-10-13 00:30:12,166 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-13 00:30:12,166 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:30:12,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-13 00:30:12,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 00:30:12,186 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:30:12,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:30:12,202 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2021-10-13 00:30:12,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-13 00:30:12,204 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-13 00:30:12,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:30:12,213 INFO L225 Difference]: With dead ends: 23 [2021-10-13 00:30:12,214 INFO L226 Difference]: Without dead ends: 9 [2021-10-13 00:30:12,217 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 00:30:12,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-10-13 00:30:12,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-10-13 00:30:12,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.0) internal successors, (8), 8 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:30:12,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 8 transitions. [2021-10-13 00:30:12,247 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 8 transitions. Word has length 8 [2021-10-13 00:30:12,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:30:12,247 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 8 transitions. [2021-10-13 00:30:12,248 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:30:12,248 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2021-10-13 00:30:12,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-13 00:30:12,249 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:30:12,249 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:30:12,291 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86a303a6-73a7-4ee5-b68b-dbac184c3bf1/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-13 00:30:12,463 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86a303a6-73a7-4ee5-b68b-dbac184c3bf1/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:30:12,464 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:30:12,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:30:12,465 INFO L82 PathProgramCache]: Analyzing trace with hash 176609352, now seen corresponding path program 1 times [2021-10-13 00:30:12,466 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:30:12,466 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2036687962] [2021-10-13 00:30:12,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:30:12,466 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:30:12,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86a303a6-73a7-4ee5-b68b-dbac184c3bf1/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:30:12,468 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86a303a6-73a7-4ee5-b68b-dbac184c3bf1/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:30:12,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86a303a6-73a7-4ee5-b68b-dbac184c3bf1/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-13 00:30:17,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:30:17,237 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:30:24,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:30:24,968 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-10-13 00:30:24,968 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-13 00:30:24,970 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 00:30:25,011 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86a303a6-73a7-4ee5-b68b-dbac184c3bf1/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-10-13 00:30:25,172 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86a303a6-73a7-4ee5-b68b-dbac184c3bf1/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:30:25,178 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 00:30:25,206 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 12:30:25 BoogieIcfgContainer [2021-10-13 00:30:25,206 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 00:30:25,207 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 00:30:25,215 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 00:30:25,216 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 00:30:25,216 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:30:10" (3/4) ... [2021-10-13 00:30:25,218 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-13 00:30:25,254 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86a303a6-73a7-4ee5-b68b-dbac184c3bf1/bin/uautomizer-WNIpwEf4Nt/witness.graphml [2021-10-13 00:30:25,254 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 00:30:25,256 INFO L168 Benchmark]: Toolchain (without parser) took 22335.46 ms. Allocated memory was 60.8 MB in the beginning and 73.4 MB in the end (delta: 12.6 MB). Free memory was 37.3 MB in the beginning and 52.9 MB in the end (delta: -15.6 MB). Peak memory consumption was 17.9 MB. Max. memory is 16.1 GB. [2021-10-13 00:30:25,257 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 60.8 MB. Free memory was 40.6 MB in the beginning and 40.5 MB in the end (delta: 42.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:30:25,258 INFO L168 Benchmark]: CACSL2BoogieTranslator took 344.29 ms. Allocated memory is still 60.8 MB. Free memory was 37.1 MB in the beginning and 42.5 MB in the end (delta: -5.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-13 00:30:25,258 INFO L168 Benchmark]: Boogie Procedure Inliner took 66.28 ms. Allocated memory is still 60.8 MB. Free memory was 42.5 MB in the beginning and 40.9 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:30:25,259 INFO L168 Benchmark]: Boogie Preprocessor took 60.67 ms. Allocated memory is still 60.8 MB. Free memory was 40.9 MB in the beginning and 39.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 00:30:25,260 INFO L168 Benchmark]: RCFGBuilder took 7087.30 ms. Allocated memory is still 60.8 MB. Free memory was 39.6 MB in the beginning and 30.4 MB in the end (delta: 9.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 00:30:25,260 INFO L168 Benchmark]: TraceAbstraction took 14720.62 ms. Allocated memory was 60.8 MB in the beginning and 73.4 MB in the end (delta: 12.6 MB). Free memory was 29.9 MB in the beginning and 34.5 MB in the end (delta: -4.6 MB). Peak memory consumption was 9.7 MB. Max. memory is 16.1 GB. [2021-10-13 00:30:25,261 INFO L168 Benchmark]: Witness Printer took 47.63 ms. Allocated memory is still 73.4 MB. Free memory was 34.5 MB in the beginning and 52.9 MB in the end (delta: -18.5 MB). Peak memory consumption was 2.8 MB. Max. memory is 16.1 GB. [2021-10-13 00:30:25,264 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 60.8 MB. Free memory was 40.6 MB in the beginning and 40.5 MB in the end (delta: 42.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 344.29 ms. Allocated memory is still 60.8 MB. Free memory was 37.1 MB in the beginning and 42.5 MB in the end (delta: -5.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 66.28 ms. Allocated memory is still 60.8 MB. Free memory was 42.5 MB in the beginning and 40.9 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 60.67 ms. Allocated memory is still 60.8 MB. Free memory was 40.9 MB in the beginning and 39.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 7087.30 ms. Allocated memory is still 60.8 MB. Free memory was 39.6 MB in the beginning and 30.4 MB in the end (delta: 9.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 14720.62 ms. Allocated memory was 60.8 MB in the beginning and 73.4 MB in the end (delta: 12.6 MB). Free memory was 29.9 MB in the beginning and 34.5 MB in the end (delta: -4.6 MB). Peak memory consumption was 9.7 MB. Max. memory is 16.1 GB. * Witness Printer took 47.63 ms. Allocated memory is still 73.4 MB. Free memory was 34.5 MB in the beginning and 52.9 MB in the end (delta: -18.5 MB). Peak memory consumption was 2.8 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 42]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L30] float IN = __VERIFIER_nondet_float(); [L15] COND FALSE !(!cond) [L20] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L25] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L33] float x = IN - f(IN)/fp(IN); [L41] COND TRUE !(x < 0.1) [L42] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 14620.0ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 10.0ms, AutomataDifference: 49.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 9.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 12 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 14.3ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 19.9ms SsaConstructionTime, 5991.6ms SatisfiabilityAnalysisTime, 240.7ms InterpolantComputationTime, 16 NumberOfCodeBlocks, 16 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 14 ConstructedInterpolants, 0 QuantifiedInterpolants, 14 SizeOfPredicates, 0 NumberOfNonLiveVariables, 32 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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 proved your program to be incorrect! [2021-10-13 00:30:25,368 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86a303a6-73a7-4ee5-b68b-dbac184c3bf1/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...