./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cdfpl/newton_1_4.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f8e1c903 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24435a04-ece1-4668-a06f-ee4a3c00a205/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24435a04-ece1-4668-a06f-ee4a3c00a205/bin/uautomizer-IVEQpCNsaX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24435a04-ece1-4668-a06f-ee4a3c00a205/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24435a04-ece1-4668-a06f-ee4a3c00a205/bin/uautomizer-IVEQpCNsaX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/newton_1_4.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24435a04-ece1-4668-a06f-ee4a3c00a205/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24435a04-ece1-4668-a06f-ee4a3c00a205/bin/uautomizer-IVEQpCNsaX --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 dc07c93ca8abe406666d29897bd5ae1cab337b01e72b917d10844b81295ca7ba --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 08:43:41,871 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 08:43:41,873 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 08:43:41,944 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 08:43:41,944 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 08:43:41,946 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 08:43:41,948 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 08:43:41,951 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 08:43:41,954 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 08:43:41,959 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 08:43:41,961 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 08:43:41,963 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 08:43:41,966 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 08:43:41,970 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 08:43:41,973 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 08:43:41,977 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 08:43:41,980 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 08:43:41,984 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 08:43:41,993 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 08:43:41,998 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 08:43:42,001 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 08:43:42,007 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 08:43:42,009 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 08:43:42,013 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 08:43:42,018 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 08:43:42,023 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 08:43:42,023 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 08:43:42,025 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 08:43:42,027 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 08:43:42,029 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 08:43:42,031 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 08:43:42,032 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 08:43:42,035 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 08:43:42,037 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 08:43:42,039 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 08:43:42,040 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 08:43:42,041 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 08:43:42,042 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 08:43:42,042 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 08:43:42,043 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 08:43:42,044 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 08:43:42,045 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24435a04-ece1-4668-a06f-ee4a3c00a205/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-09 08:43:42,088 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 08:43:42,088 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 08:43:42,089 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 08:43:42,089 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 08:43:42,090 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 08:43:42,091 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 08:43:42,091 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 08:43:42,091 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 08:43:42,092 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-09 08:43:42,092 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 08:43:42,092 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-09 08:43:42,092 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 08:43:42,093 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-09 08:43:42,093 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 08:43:42,093 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-09 08:43:42,093 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-09 08:43:42,094 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-09 08:43:42,094 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 08:43:42,094 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-09 08:43:42,095 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 08:43:42,095 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 08:43:42,095 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 08:43:42,095 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 08:43:42,096 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 08:43:42,096 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 08:43:42,096 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-09 08:43:42,096 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-09 08:43:42,097 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-09 08:43:42,097 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-09 08:43:42,097 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-09 08:43:42,097 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-09 08:43:42,098 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 08:43:42,098 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_24435a04-ece1-4668-a06f-ee4a3c00a205/bin/uautomizer-IVEQpCNsaX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24435a04-ece1-4668-a06f-ee4a3c00a205/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dc07c93ca8abe406666d29897bd5ae1cab337b01e72b917d10844b81295ca7ba [2021-11-09 08:43:42,396 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 08:43:42,420 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 08:43:42,423 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 08:43:42,425 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 08:43:42,426 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 08:43:42,428 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24435a04-ece1-4668-a06f-ee4a3c00a205/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/floats-cdfpl/newton_1_4.i [2021-11-09 08:43:42,501 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24435a04-ece1-4668-a06f-ee4a3c00a205/bin/uautomizer-IVEQpCNsaX/data/4cc76c015/7c07d2b0bf5c4d3e93544895772a06dd/FLAG2ee55a8c1 [2021-11-09 08:43:43,065 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 08:43:43,066 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24435a04-ece1-4668-a06f-ee4a3c00a205/sv-benchmarks/c/floats-cdfpl/newton_1_4.i [2021-11-09 08:43:43,073 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24435a04-ece1-4668-a06f-ee4a3c00a205/bin/uautomizer-IVEQpCNsaX/data/4cc76c015/7c07d2b0bf5c4d3e93544895772a06dd/FLAG2ee55a8c1 [2021-11-09 08:43:43,430 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24435a04-ece1-4668-a06f-ee4a3c00a205/bin/uautomizer-IVEQpCNsaX/data/4cc76c015/7c07d2b0bf5c4d3e93544895772a06dd [2021-11-09 08:43:43,433 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 08:43:43,435 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-09 08:43:43,442 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 08:43:43,442 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 08:43:43,447 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 08:43:43,449 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 08:43:43" (1/1) ... [2021-11-09 08:43:43,451 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21637323 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:43:43, skipping insertion in model container [2021-11-09 08:43:43,453 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 08:43:43" (1/1) ... [2021-11-09 08:43:43,462 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 08:43:43,485 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 08:43:43,771 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_24435a04-ece1-4668-a06f-ee4a3c00a205/sv-benchmarks/c/floats-cdfpl/newton_1_4.i[1224,1237] [2021-11-09 08:43:43,785 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 08:43:43,805 INFO L203 MainTranslator]: Completed pre-run [2021-11-09 08:43:43,842 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_24435a04-ece1-4668-a06f-ee4a3c00a205/sv-benchmarks/c/floats-cdfpl/newton_1_4.i[1224,1237] [2021-11-09 08:43:43,850 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 08:43:43,870 INFO L208 MainTranslator]: Completed translation [2021-11-09 08:43:43,871 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:43:43 WrapperNode [2021-11-09 08:43:43,872 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 08:43:43,874 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-09 08:43:43,875 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-09 08:43:43,875 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-09 08:43:43,885 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:43:43" (1/1) ... [2021-11-09 08:43:43,896 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:43:43" (1/1) ... [2021-11-09 08:43:43,924 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-09 08:43:43,925 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-09 08:43:43,925 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-09 08:43:43,925 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-09 08:43:43,936 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:43:43" (1/1) ... [2021-11-09 08:43:43,936 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:43:43" (1/1) ... [2021-11-09 08:43:43,949 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:43:43" (1/1) ... [2021-11-09 08:43:43,950 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:43:43" (1/1) ... [2021-11-09 08:43:43,956 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:43:43" (1/1) ... [2021-11-09 08:43:43,964 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:43:43" (1/1) ... [2021-11-09 08:43:43,967 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:43:43" (1/1) ... [2021-11-09 08:43:43,974 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-09 08:43:43,976 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-09 08:43:43,976 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-09 08:43:43,977 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-09 08:43:43,978 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:43:43" (1/1) ... [2021-11-09 08:43:43,988 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 08:43:44,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24435a04-ece1-4668-a06f-ee4a3c00a205/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:43:44,028 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24435a04-ece1-4668-a06f-ee4a3c00a205/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-09 08:43:44,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24435a04-ece1-4668-a06f-ee4a3c00a205/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-09 08:43:44,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-09 08:43:44,094 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-09 08:43:44,095 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-09 08:43:44,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-09 08:43:44,300 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-09 08:43:44,300 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-11-09 08:43:44,302 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 08:43:44 BoogieIcfgContainer [2021-11-09 08:43:44,303 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-09 08:43:44,305 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-09 08:43:44,305 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-09 08:43:44,309 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-09 08:43:44,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 08:43:43" (1/3) ... [2021-11-09 08:43:44,311 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fd37650 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 08:43:44, skipping insertion in model container [2021-11-09 08:43:44,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:43:43" (2/3) ... [2021-11-09 08:43:44,311 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fd37650 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 08:43:44, skipping insertion in model container [2021-11-09 08:43:44,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 08:43:44" (3/3) ... [2021-11-09 08:43:44,313 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_1_4.i [2021-11-09 08:43:44,320 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-09 08:43:44,321 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-09 08:43:44,382 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-09 08:43:44,390 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-09 08:43:44,390 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-09 08:43:44,406 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) [2021-11-09 08:43:44,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-09 08:43:44,412 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:43:44,413 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:43:44,414 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:43:44,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:43:44,421 INFO L85 PathProgramCache]: Analyzing trace with hash 119351050, now seen corresponding path program 1 times [2021-11-09 08:43:44,433 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:43:44,433 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888340512] [2021-11-09 08:43:44,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:43:44,435 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:43:44,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:43:44,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:43:44,607 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:43:44,614 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888340512] [2021-11-09 08:43:44,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888340512] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:43:44,616 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:43:44,616 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-09 08:43:44,618 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147883559] [2021-11-09 08:43:44,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-09 08:43:44,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:43:44,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-09 08:43:44,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-09 08:43:44,666 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) [2021-11-09 08:43:44,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:43:44,686 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2021-11-09 08:43:44,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-09 08:43:44,688 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 [2021-11-09 08:43:44,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:43:44,698 INFO L225 Difference]: With dead ends: 23 [2021-11-09 08:43:44,698 INFO L226 Difference]: Without dead ends: 9 [2021-11-09 08:43:44,701 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-09 08:43:44,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-11-09 08:43:44,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-11-09 08:43:44,738 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) [2021-11-09 08:43:44,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 8 transitions. [2021-11-09 08:43:44,740 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 8 transitions. Word has length 8 [2021-11-09 08:43:44,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:43:44,741 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 8 transitions. [2021-11-09 08:43:44,741 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) [2021-11-09 08:43:44,741 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2021-11-09 08:43:44,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-09 08:43:44,742 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:43:44,742 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:43:44,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-09 08:43:44,743 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:43:44,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:43:44,744 INFO L85 PathProgramCache]: Analyzing trace with hash 176609352, now seen corresponding path program 1 times [2021-11-09 08:43:44,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:43:44,745 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68890183] [2021-11-09 08:43:44,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:43:44,746 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:43:44,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 08:43:44,814 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-09 08:43:44,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 08:43:44,907 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-09 08:43:44,907 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-11-09 08:43:44,911 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-09 08:43:44,913 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-09 08:43:44,918 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-09 08:43:44,921 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-09 08:43:44,952 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 08:43:44 BoogieIcfgContainer [2021-11-09 08:43:44,952 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-09 08:43:44,953 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-09 08:43:44,954 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-09 08:43:44,954 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-09 08:43:44,955 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 08:43:44" (3/4) ... [2021-11-09 08:43:44,960 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-09 08:43:44,961 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-09 08:43:44,965 INFO L168 Benchmark]: Toolchain (without parser) took 1527.68 ms. Allocated memory was 109.1 MB in the beginning and 136.3 MB in the end (delta: 27.3 MB). Free memory was 77.0 MB in the beginning and 109.8 MB in the end (delta: -32.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 08:43:44,966 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 109.1 MB. Free memory is still 62.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 08:43:44,969 INFO L168 Benchmark]: CACSL2BoogieTranslator took 430.94 ms. Allocated memory is still 109.1 MB. Free memory was 77.0 MB in the beginning and 83.0 MB in the end (delta: -6.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-09 08:43:44,972 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.99 ms. Allocated memory is still 109.1 MB. Free memory was 83.0 MB in the beginning and 81.5 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 08:43:44,979 INFO L168 Benchmark]: Boogie Preprocessor took 49.94 ms. Allocated memory is still 109.1 MB. Free memory was 81.5 MB in the beginning and 80.5 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-09 08:43:44,981 INFO L168 Benchmark]: RCFGBuilder took 327.24 ms. Allocated memory is still 109.1 MB. Free memory was 80.5 MB in the beginning and 71.8 MB in the end (delta: 8.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-09 08:43:44,982 INFO L168 Benchmark]: TraceAbstraction took 647.51 ms. Allocated memory was 109.1 MB in the beginning and 136.3 MB in the end (delta: 27.3 MB). Free memory was 71.4 MB in the beginning and 110.5 MB in the end (delta: -39.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 08:43:44,983 INFO L168 Benchmark]: Witness Printer took 7.57 ms. Allocated memory is still 136.3 MB. Free memory was 110.5 MB in the beginning and 109.8 MB in the end (delta: 705.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-09 08:43:44,993 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 109.1 MB. Free memory is still 62.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 430.94 ms. Allocated memory is still 109.1 MB. Free memory was 77.0 MB in the beginning and 83.0 MB in the end (delta: -6.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 49.99 ms. Allocated memory is still 109.1 MB. Free memory was 83.0 MB in the beginning and 81.5 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 49.94 ms. Allocated memory is still 109.1 MB. Free memory was 81.5 MB in the beginning and 80.5 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 327.24 ms. Allocated memory is still 109.1 MB. Free memory was 80.5 MB in the beginning and 71.8 MB in the end (delta: 8.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 647.51 ms. Allocated memory was 109.1 MB in the beginning and 136.3 MB in the end (delta: 27.3 MB). Free memory was 71.4 MB in the beginning and 110.5 MB in the end (delta: -39.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 7.57 ms. Allocated memory is still 136.3 MB. Free memory was 110.5 MB in the beginning and 109.8 MB in the end (delta: 705.0 kB). Peak memory consumption was 2.1 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, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 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: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 12 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s 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, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s 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 [2021-11-09 08:43:45,054 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24435a04-ece1-4668-a06f-ee4a3c00a205/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24435a04-ece1-4668-a06f-ee4a3c00a205/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24435a04-ece1-4668-a06f-ee4a3c00a205/bin/uautomizer-IVEQpCNsaX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24435a04-ece1-4668-a06f-ee4a3c00a205/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24435a04-ece1-4668-a06f-ee4a3c00a205/bin/uautomizer-IVEQpCNsaX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/newton_1_4.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24435a04-ece1-4668-a06f-ee4a3c00a205/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24435a04-ece1-4668-a06f-ee4a3c00a205/bin/uautomizer-IVEQpCNsaX --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 dc07c93ca8abe406666d29897bd5ae1cab337b01e72b917d10844b81295ca7ba --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 08:43:48,139 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 08:43:48,143 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 08:43:48,207 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 08:43:48,208 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 08:43:48,215 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 08:43:48,217 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 08:43:48,226 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 08:43:48,230 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 08:43:48,237 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 08:43:48,240 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 08:43:48,242 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 08:43:48,243 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 08:43:48,247 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 08:43:48,250 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 08:43:48,255 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 08:43:48,258 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 08:43:48,259 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 08:43:48,262 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 08:43:48,273 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 08:43:48,276 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 08:43:48,277 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 08:43:48,282 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 08:43:48,284 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 08:43:48,296 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 08:43:48,297 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 08:43:48,297 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 08:43:48,300 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 08:43:48,301 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 08:43:48,303 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 08:43:48,303 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 08:43:48,305 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 08:43:48,308 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 08:43:48,309 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 08:43:48,311 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 08:43:48,312 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 08:43:48,314 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 08:43:48,314 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 08:43:48,315 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 08:43:48,317 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 08:43:48,318 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 08:43:48,325 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24435a04-ece1-4668-a06f-ee4a3c00a205/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-11-09 08:43:48,381 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 08:43:48,382 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 08:43:48,383 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 08:43:48,383 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 08:43:48,386 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 08:43:48,387 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 08:43:48,387 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 08:43:48,388 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 08:43:48,388 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-09 08:43:48,388 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-09 08:43:48,390 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 08:43:48,390 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-09 08:43:48,391 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 08:43:48,391 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-09 08:43:48,392 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-09 08:43:48,392 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-09 08:43:48,393 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-09 08:43:48,393 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-09 08:43:48,393 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 08:43:48,394 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-09 08:43:48,394 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 08:43:48,395 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 08:43:48,395 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 08:43:48,395 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 08:43:48,396 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 08:43:48,396 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 08:43:48,397 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-09 08:43:48,397 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-09 08:43:48,398 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-09 08:43:48,398 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-09 08:43:48,398 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-09 08:43:48,399 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-09 08:43:48,399 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 08:43:48,400 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-09 08:43:48,400 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_24435a04-ece1-4668-a06f-ee4a3c00a205/bin/uautomizer-IVEQpCNsaX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24435a04-ece1-4668-a06f-ee4a3c00a205/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dc07c93ca8abe406666d29897bd5ae1cab337b01e72b917d10844b81295ca7ba [2021-11-09 08:43:48,948 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 08:43:48,978 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 08:43:48,982 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 08:43:48,983 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 08:43:48,984 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 08:43:48,985 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24435a04-ece1-4668-a06f-ee4a3c00a205/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/floats-cdfpl/newton_1_4.i [2021-11-09 08:43:49,100 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24435a04-ece1-4668-a06f-ee4a3c00a205/bin/uautomizer-IVEQpCNsaX/data/7c278f0df/56781e39937146529e6c6fc7f30ea00d/FLAG31392d660 [2021-11-09 08:43:49,772 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 08:43:49,773 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24435a04-ece1-4668-a06f-ee4a3c00a205/sv-benchmarks/c/floats-cdfpl/newton_1_4.i [2021-11-09 08:43:49,781 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24435a04-ece1-4668-a06f-ee4a3c00a205/bin/uautomizer-IVEQpCNsaX/data/7c278f0df/56781e39937146529e6c6fc7f30ea00d/FLAG31392d660 [2021-11-09 08:43:50,120 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24435a04-ece1-4668-a06f-ee4a3c00a205/bin/uautomizer-IVEQpCNsaX/data/7c278f0df/56781e39937146529e6c6fc7f30ea00d [2021-11-09 08:43:50,123 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 08:43:50,125 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-09 08:43:50,127 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 08:43:50,127 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 08:43:50,146 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 08:43:50,147 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 08:43:50" (1/1) ... [2021-11-09 08:43:50,149 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3116556f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:43:50, skipping insertion in model container [2021-11-09 08:43:50,149 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 08:43:50" (1/1) ... [2021-11-09 08:43:50,158 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 08:43:50,176 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 08:43:50,371 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_24435a04-ece1-4668-a06f-ee4a3c00a205/sv-benchmarks/c/floats-cdfpl/newton_1_4.i[1224,1237] [2021-11-09 08:43:50,375 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 08:43:50,390 INFO L203 MainTranslator]: Completed pre-run [2021-11-09 08:43:50,414 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_24435a04-ece1-4668-a06f-ee4a3c00a205/sv-benchmarks/c/floats-cdfpl/newton_1_4.i[1224,1237] [2021-11-09 08:43:50,415 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 08:43:50,467 INFO L208 MainTranslator]: Completed translation [2021-11-09 08:43:50,484 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:43:50 WrapperNode [2021-11-09 08:43:50,484 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 08:43:50,486 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-09 08:43:50,486 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-09 08:43:50,486 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-09 08:43:50,514 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:43:50" (1/1) ... [2021-11-09 08:43:50,527 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:43:50" (1/1) ... [2021-11-09 08:43:50,552 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-09 08:43:50,553 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-09 08:43:50,553 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-09 08:43:50,553 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-09 08:43:50,563 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:43:50" (1/1) ... [2021-11-09 08:43:50,564 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:43:50" (1/1) ... [2021-11-09 08:43:50,568 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:43:50" (1/1) ... [2021-11-09 08:43:50,568 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:43:50" (1/1) ... [2021-11-09 08:43:50,577 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:43:50" (1/1) ... [2021-11-09 08:43:50,579 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:43:50" (1/1) ... [2021-11-09 08:43:50,582 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:43:50" (1/1) ... [2021-11-09 08:43:50,585 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-09 08:43:50,586 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-09 08:43:50,587 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-09 08:43:50,587 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-09 08:43:50,588 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:43:50" (1/1) ... [2021-11-09 08:43:50,596 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 08:43:50,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24435a04-ece1-4668-a06f-ee4a3c00a205/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:43:50,633 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24435a04-ece1-4668-a06f-ee4a3c00a205/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-09 08:43:50,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24435a04-ece1-4668-a06f-ee4a3c00a205/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-09 08:43:50,692 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-09 08:43:50,692 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-09 08:43:50,692 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-09 08:43:50,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-09 08:43:57,679 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-09 08:43:57,679 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-11-09 08:43:57,682 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 08:43:57 BoogieIcfgContainer [2021-11-09 08:43:57,682 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-09 08:43:57,685 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-09 08:43:57,685 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-09 08:43:57,689 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-09 08:43:57,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 08:43:50" (1/3) ... [2021-11-09 08:43:57,690 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4376d7aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 08:43:57, skipping insertion in model container [2021-11-09 08:43:57,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:43:50" (2/3) ... [2021-11-09 08:43:57,691 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4376d7aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 08:43:57, skipping insertion in model container [2021-11-09 08:43:57,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 08:43:57" (3/3) ... [2021-11-09 08:43:57,693 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_1_4.i [2021-11-09 08:43:57,700 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-09 08:43:57,701 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-09 08:43:57,762 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-09 08:43:57,771 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-09 08:43:57,771 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-09 08:43:57,788 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) [2021-11-09 08:43:57,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-09 08:43:57,795 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:43:57,796 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:43:57,796 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:43:57,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:43:57,804 INFO L85 PathProgramCache]: Analyzing trace with hash 119351050, now seen corresponding path program 1 times [2021-11-09 08:43:57,837 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 08:43:57,837 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1956676450] [2021-11-09 08:43:57,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:43:57,839 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 08:43:57,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24435a04-ece1-4668-a06f-ee4a3c00a205/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 08:43:57,845 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24435a04-ece1-4668-a06f-ee4a3c00a205/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 08:43:57,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24435a04-ece1-4668-a06f-ee4a3c00a205/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-09 08:43:59,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:43:59,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-09 08:43:59,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:43:59,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:43:59,441 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 08:43:59,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:43:59,518 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 08:43:59,519 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1956676450] [2021-11-09 08:43:59,519 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1956676450] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 08:43:59,519 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:43:59,520 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-09 08:43:59,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311742686] [2021-11-09 08:43:59,527 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-09 08:43:59,527 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 08:43:59,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-09 08:43:59,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-09 08:43:59,554 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) [2021-11-09 08:43:59,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:43:59,570 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2021-11-09 08:43:59,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-09 08:43:59,572 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 [2021-11-09 08:43:59,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:43:59,582 INFO L225 Difference]: With dead ends: 23 [2021-11-09 08:43:59,583 INFO L226 Difference]: Without dead ends: 9 [2021-11-09 08:43:59,586 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-09 08:43:59,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-11-09 08:43:59,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-11-09 08:43:59,609 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) [2021-11-09 08:43:59,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 8 transitions. [2021-11-09 08:43:59,611 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 8 transitions. Word has length 8 [2021-11-09 08:43:59,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:43:59,612 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 8 transitions. [2021-11-09 08:43:59,612 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) [2021-11-09 08:43:59,612 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2021-11-09 08:43:59,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-09 08:43:59,613 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:43:59,613 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:43:59,641 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24435a04-ece1-4668-a06f-ee4a3c00a205/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-09 08:43:59,826 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24435a04-ece1-4668-a06f-ee4a3c00a205/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 08:43:59,827 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:43:59,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:43:59,828 INFO L85 PathProgramCache]: Analyzing trace with hash 176609352, now seen corresponding path program 1 times [2021-11-09 08:43:59,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 08:43:59,829 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1959552063] [2021-11-09 08:43:59,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:43:59,829 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 08:43:59,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24435a04-ece1-4668-a06f-ee4a3c00a205/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 08:43:59,831 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24435a04-ece1-4668-a06f-ee4a3c00a205/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 08:43:59,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24435a04-ece1-4668-a06f-ee4a3c00a205/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-09 08:45:03,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 08:45:03,202 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-09 08:45:07,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 08:45:07,714 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-11-09 08:45:07,714 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-11-09 08:45:07,717 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-09 08:45:07,767 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24435a04-ece1-4668-a06f-ee4a3c00a205/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-09 08:45:07,921 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24435a04-ece1-4668-a06f-ee4a3c00a205/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 08:45:07,924 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-09 08:45:07,927 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-09 08:45:07,960 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 08:45:07 BoogieIcfgContainer [2021-11-09 08:45:07,960 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-09 08:45:07,962 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-09 08:45:07,962 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-09 08:45:07,962 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-09 08:45:07,963 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 08:43:57" (3/4) ... [2021-11-09 08:45:07,965 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-09 08:45:08,007 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24435a04-ece1-4668-a06f-ee4a3c00a205/bin/uautomizer-IVEQpCNsaX/witness.graphml [2021-11-09 08:45:08,007 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-09 08:45:08,010 INFO L168 Benchmark]: Toolchain (without parser) took 77883.14 ms. Allocated memory was 62.9 MB in the beginning and 75.5 MB in the end (delta: 12.6 MB). Free memory was 41.8 MB in the beginning and 54.1 MB in the end (delta: -12.3 MB). Peak memory consumption was 832.3 kB. Max. memory is 16.1 GB. [2021-11-09 08:45:08,010 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 62.9 MB. Free memory is still 43.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 08:45:08,011 INFO L168 Benchmark]: CACSL2BoogieTranslator took 357.76 ms. Allocated memory is still 62.9 MB. Free memory was 41.7 MB in the beginning and 45.3 MB in the end (delta: -3.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-11-09 08:45:08,012 INFO L168 Benchmark]: Boogie Procedure Inliner took 66.26 ms. Allocated memory is still 62.9 MB. Free memory was 45.1 MB in the beginning and 43.6 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 08:45:08,013 INFO L168 Benchmark]: Boogie Preprocessor took 32.81 ms. Allocated memory is still 62.9 MB. Free memory was 43.6 MB in the beginning and 42.4 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 08:45:08,014 INFO L168 Benchmark]: RCFGBuilder took 7095.85 ms. Allocated memory is still 62.9 MB. Free memory was 42.4 MB in the beginning and 33.2 MB in the end (delta: 9.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-09 08:45:08,015 INFO L168 Benchmark]: TraceAbstraction took 70276.15 ms. Allocated memory was 62.9 MB in the beginning and 75.5 MB in the end (delta: 12.6 MB). Free memory was 32.7 MB in the beginning and 55.8 MB in the end (delta: -23.1 MB). Peak memory consumption was 10.0 MB. Max. memory is 16.1 GB. [2021-11-09 08:45:08,016 INFO L168 Benchmark]: Witness Printer took 45.86 ms. Allocated memory is still 75.5 MB. Free memory was 55.8 MB in the beginning and 54.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-09 08:45:08,019 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 62.9 MB. Free memory is still 43.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 357.76 ms. Allocated memory is still 62.9 MB. Free memory was 41.7 MB in the beginning and 45.3 MB in the end (delta: -3.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 66.26 ms. Allocated memory is still 62.9 MB. Free memory was 45.1 MB in the beginning and 43.6 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 32.81 ms. Allocated memory is still 62.9 MB. Free memory was 43.6 MB in the beginning and 42.4 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 7095.85 ms. Allocated memory is still 62.9 MB. Free memory was 42.4 MB in the beginning and 33.2 MB in the end (delta: 9.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 70276.15 ms. Allocated memory was 62.9 MB in the beginning and 75.5 MB in the end (delta: 12.6 MB). Free memory was 32.7 MB in the beginning and 55.8 MB in the end (delta: -23.1 MB). Peak memory consumption was 10.0 MB. Max. memory is 16.1 GB. * Witness Printer took 45.86 ms. Allocated memory is still 75.5 MB. Free memory was 55.8 MB in the beginning and 54.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 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, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s 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: 70.1s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 12 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s 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, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 64.7s SatisfiabilityAnalysisTime, 0.2s 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! [2021-11-09 08:45:08,154 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24435a04-ece1-4668-a06f-ee4a3c00a205/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE