./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/floats-cdfpl/newton_2_7.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 20ed64ec Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/floats-cdfpl/newton_2_7.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 bcef4cc70c9b5c3730a533760ba731f42f0ccc80 ......................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/floats-cdfpl/newton_2_7.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 bcef4cc70c9b5c3730a533760ba731f42f0ccc80 .................................................................................................................................................................................................................................................................................................. 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-20ed64e [2021-08-25 23:41:15,833 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-25 23:41:15,836 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-25 23:41:15,885 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-25 23:41:15,886 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-25 23:41:15,889 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-25 23:41:15,890 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-25 23:41:15,896 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-25 23:41:15,898 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-25 23:41:15,902 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-25 23:41:15,903 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-25 23:41:15,907 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-25 23:41:15,908 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-25 23:41:15,910 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-25 23:41:15,912 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-25 23:41:15,915 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-25 23:41:15,916 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-25 23:41:15,917 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-25 23:41:15,919 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-25 23:41:15,925 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-25 23:41:15,926 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-25 23:41:15,927 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-25 23:41:15,929 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-25 23:41:15,930 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-25 23:41:15,936 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-25 23:41:15,937 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-25 23:41:15,937 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-25 23:41:15,939 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-25 23:41:15,940 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-25 23:41:15,940 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-25 23:41:15,941 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-25 23:41:15,941 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-25 23:41:15,943 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-25 23:41:15,944 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-25 23:41:15,945 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-25 23:41:15,945 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-25 23:41:15,946 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-25 23:41:15,946 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-25 23:41:15,946 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-25 23:41:15,948 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-25 23:41:15,949 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-25 23:41:15,953 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-25 23:41:15,990 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-25 23:41:15,990 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-25 23:41:15,991 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-25 23:41:15,991 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-25 23:41:15,993 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-25 23:41:15,994 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-25 23:41:15,994 INFO L138 SettingsManager]: * Use SBE=true [2021-08-25 23:41:15,994 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-25 23:41:15,994 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-25 23:41:15,995 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-25 23:41:15,995 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-25 23:41:15,996 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-25 23:41:15,996 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-25 23:41:15,996 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-25 23:41:15,996 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-25 23:41:15,997 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-25 23:41:15,997 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-25 23:41:15,997 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-25 23:41:15,997 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-25 23:41:15,998 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-25 23:41:15,998 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-25 23:41:15,998 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-25 23:41:15,998 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-25 23:41:15,999 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-25 23:41:15,999 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-25 23:41:15,999 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-25 23:41:15,999 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-25 23:41:15,999 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-25 23:41:16,000 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-25 23:41:16,000 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-25 23:41:16,000 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bcef4cc70c9b5c3730a533760ba731f42f0ccc80 [2021-08-25 23:41:16,315 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-25 23:41:16,335 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-25 23:41:16,338 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-25 23:41:16,339 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-25 23:41:16,340 INFO L275 PluginConnector]: CDTParser initialized [2021-08-25 23:41:16,341 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cdfpl/newton_2_7.i [2021-08-25 23:41:16,401 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/489238ad0/37fe8395a2264dcbb23af7ba250900a9/FLAGe5aa2d458 [2021-08-25 23:41:16,881 INFO L306 CDTParser]: Found 1 translation units. [2021-08-25 23:41:16,882 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_2_7.i [2021-08-25 23:41:16,888 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/489238ad0/37fe8395a2264dcbb23af7ba250900a9/FLAGe5aa2d458 [2021-08-25 23:41:17,371 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/489238ad0/37fe8395a2264dcbb23af7ba250900a9 [2021-08-25 23:41:17,374 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-25 23:41:17,375 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-25 23:41:17,376 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-25 23:41:17,376 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-25 23:41:17,381 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-25 23:41:17,382 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 11:41:17" (1/1) ... [2021-08-25 23:41:17,382 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ca71729 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:41:17, skipping insertion in model container [2021-08-25 23:41:17,383 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 11:41:17" (1/1) ... [2021-08-25 23:41:17,389 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-25 23:41:17,401 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-25 23:41:17,536 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_2_7.i[1245,1258] [2021-08-25 23:41:17,539 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-25 23:41:17,546 INFO L203 MainTranslator]: Completed pre-run [2021-08-25 23:41:17,565 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_2_7.i[1245,1258] [2021-08-25 23:41:17,566 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-25 23:41:17,577 INFO L208 MainTranslator]: Completed translation [2021-08-25 23:41:17,596 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:41:17 WrapperNode [2021-08-25 23:41:17,598 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-25 23:41:17,599 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-25 23:41:17,599 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-25 23:41:17,600 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-25 23:41:17,606 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:41:17" (1/1) ... [2021-08-25 23:41:17,613 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:41:17" (1/1) ... [2021-08-25 23:41:17,636 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-25 23:41:17,637 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-25 23:41:17,637 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-25 23:41:17,638 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-25 23:41:17,644 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:41:17" (1/1) ... [2021-08-25 23:41:17,644 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:41:17" (1/1) ... [2021-08-25 23:41:17,653 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:41:17" (1/1) ... [2021-08-25 23:41:17,653 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:41:17" (1/1) ... [2021-08-25 23:41:17,665 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:41:17" (1/1) ... [2021-08-25 23:41:17,667 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:41:17" (1/1) ... [2021-08-25 23:41:17,668 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:41:17" (1/1) ... [2021-08-25 23:41:17,669 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-25 23:41:17,670 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-25 23:41:17,670 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-25 23:41:17,670 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-25 23:41:17,671 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:41:17" (1/1) ... [2021-08-25 23:41:17,676 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-25 23:41:17,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-25 23:41:17,692 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-25 23:41:17,712 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-25 23:41:17,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-25 23:41:17,732 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-25 23:41:17,733 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-25 23:41:17,733 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-25 23:41:18,010 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-25 23:41:18,011 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2021-08-25 23:41:18,012 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 11:41:18 BoogieIcfgContainer [2021-08-25 23:41:18,012 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-25 23:41:18,014 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-25 23:41:18,014 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-25 23:41:18,016 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-25 23:41:18,016 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.08 11:41:17" (1/3) ... [2021-08-25 23:41:18,017 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1546ceb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 11:41:18, skipping insertion in model container [2021-08-25 23:41:18,017 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:41:17" (2/3) ... [2021-08-25 23:41:18,017 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1546ceb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 11:41:18, skipping insertion in model container [2021-08-25 23:41:18,017 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 11:41:18" (3/3) ... [2021-08-25 23:41:18,019 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_2_7.i [2021-08-25 23:41:18,037 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-25 23:41:18,037 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-25 23:41:18,080 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-25 23:41:18,086 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 [2021-08-25 23:41:18,086 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-08-25 23:41:18,101 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 14 states have internal predecessors, (16), 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) [2021-08-25 23:41:18,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-25 23:41:18,106 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 23:41:18,106 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-25 23:41:18,107 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 23:41:18,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 23:41:18,116 INFO L82 PathProgramCache]: Analyzing trace with hash -1267787092, now seen corresponding path program 1 times [2021-08-25 23:41:18,122 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 23:41:18,123 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920094997] [2021-08-25 23:41:18,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 23:41:18,124 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 23:41:18,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 23:41:18,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-25 23:41:18,239 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 23:41:18,239 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920094997] [2021-08-25 23:41:18,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920094997] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-25 23:41:18,240 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-25 23:41:18,240 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-25 23:41:18,242 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373946543] [2021-08-25 23:41:18,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-25 23:41:18,246 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 23:41:18,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-25 23:41:18,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-25 23:41:18,258 INFO L87 Difference]: Start difference. First operand has 15 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 14 states have internal predecessors, (16), 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 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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) [2021-08-25 23:41:18,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 23:41:18,269 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2021-08-25 23:41:18,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-25 23:41:18,270 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 10 [2021-08-25 23:41:18,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 23:41:18,275 INFO L225 Difference]: With dead ends: 27 [2021-08-25 23:41:18,276 INFO L226 Difference]: Without dead ends: 11 [2021-08-25 23:41:18,278 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 [2021-08-25 23:41:18,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-08-25 23:41:18,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-08-25 23:41:18,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.0) internal successors, (10), 10 states have internal predecessors, (10), 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) [2021-08-25 23:41:18,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 10 transitions. [2021-08-25 23:41:18,302 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 10 transitions. Word has length 10 [2021-08-25 23:41:18,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 23:41:18,303 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 10 transitions. [2021-08-25 23:41:18,304 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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) [2021-08-25 23:41:18,304 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 10 transitions. [2021-08-25 23:41:18,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-25 23:41:18,305 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 23:41:18,305 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-25 23:41:18,305 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-25 23:41:18,305 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 23:41:18,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 23:41:18,310 INFO L82 PathProgramCache]: Analyzing trace with hash -2077133718, now seen corresponding path program 1 times [2021-08-25 23:41:18,310 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 23:41:18,311 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067401701] [2021-08-25 23:41:18,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 23:41:18,311 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 23:41:18,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-25 23:41:18,334 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-25 23:41:18,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-25 23:41:18,380 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-25 23:41:18,380 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-08-25 23:41:18,381 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-25 23:41:18,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-25 23:41:18,389 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-25 23:41:18,411 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.08 11:41:18 BoogieIcfgContainer [2021-08-25 23:41:18,411 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-25 23:41:18,417 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-25 23:41:18,417 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-25 23:41:18,418 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-25 23:41:18,418 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 11:41:18" (3/4) ... [2021-08-25 23:41:18,421 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-08-25 23:41:18,421 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-25 23:41:18,422 INFO L168 Benchmark]: Toolchain (without parser) took 1046.84 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 37.0 MB in the beginning and 49.5 MB in the end (delta: -12.5 MB). Peak memory consumption was 415.6 kB. Max. memory is 16.1 GB. [2021-08-25 23:41:18,423 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 44.0 MB. Free memory was 25.9 MB in the beginning and 25.9 MB in the end (delta: 42.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-25 23:41:18,423 INFO L168 Benchmark]: CACSL2BoogieTranslator took 222.17 ms. Allocated memory is still 54.5 MB. Free memory was 36.7 MB in the beginning and 37.8 MB in the end (delta: -1.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-08-25 23:41:18,424 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.34 ms. Allocated memory is still 54.5 MB. Free memory was 37.8 MB in the beginning and 36.3 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-25 23:41:18,424 INFO L168 Benchmark]: Boogie Preprocessor took 31.64 ms. Allocated memory is still 54.5 MB. Free memory was 36.3 MB in the beginning and 35.1 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-25 23:41:18,425 INFO L168 Benchmark]: RCFGBuilder took 342.71 ms. Allocated memory is still 54.5 MB. Free memory was 35.1 MB in the beginning and 35.1 MB in the end (delta: 9.4 kB). Peak memory consumption was 13.8 MB. Max. memory is 16.1 GB. [2021-08-25 23:41:18,425 INFO L168 Benchmark]: TraceAbstraction took 397.37 ms. Allocated memory is still 54.5 MB. Free memory was 34.6 MB in the beginning and 25.0 MB in the end (delta: 9.6 MB). Peak memory consumption was 8.9 MB. Max. memory is 16.1 GB. [2021-08-25 23:41:18,426 INFO L168 Benchmark]: Witness Printer took 3.84 ms. Allocated memory is still 67.1 MB. Free memory was 49.8 MB in the beginning and 49.5 MB in the end (delta: 310.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-25 23:41:18,428 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 44.0 MB. Free memory was 25.9 MB in the beginning and 25.9 MB in the end (delta: 42.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 222.17 ms. Allocated memory is still 54.5 MB. Free memory was 36.7 MB in the beginning and 37.8 MB in the end (delta: -1.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 37.34 ms. Allocated memory is still 54.5 MB. Free memory was 37.8 MB in the beginning and 36.3 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 31.64 ms. Allocated memory is still 54.5 MB. Free memory was 36.3 MB in the beginning and 35.1 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 342.71 ms. Allocated memory is still 54.5 MB. Free memory was 35.1 MB in the beginning and 35.1 MB in the end (delta: 9.4 kB). Peak memory consumption was 13.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 397.37 ms. Allocated memory is still 54.5 MB. Free memory was 34.6 MB in the beginning and 25.0 MB in the end (delta: 9.6 MB). Peak memory consumption was 8.9 MB. Max. memory is 16.1 GB. * Witness Printer took 3.84 ms. Allocated memory is still 67.1 MB. Free memory was 49.8 MB in the beginning and 49.5 MB in the end (delta: 310.9 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 35. 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); [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; [L35] x = x - f(x)/fp(x) [L41] COND TRUE !(x < 0.1) [L42] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 307.5ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 11.5ms, AutomataDifference: 31.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 8.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 14 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=15occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 13.4ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 6.7ms SsaConstructionTime, 41.9ms SatisfiabilityAnalysisTime, 39.8ms InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 9 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 [2021-08-25 23:41:18,463 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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-20ed64e [2021-08-25 23:41:20,296 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2021-08-25 23:41:20,355 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-25 23:41:20,356 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-25 23:41:20,362 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-25 23:41:20,365 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-25 23:41:20,367 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-25 23:41:20,367 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-25 23:41:20,367 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-25 23:41:20,368 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-25 23:41:20,368 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-25 23:41:20,369 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-25 23:41:20,370 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-25 23:41:20,371 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-08-25 23:41:20,414 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-25 23:41:20,414 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-25 23:41:20,415 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-25 23:41:20,416 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-25 23:41:20,418 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-25 23:41:20,418 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-25 23:41:20,418 INFO L138 SettingsManager]: * Use SBE=true [2021-08-25 23:41:20,418 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-25 23:41:20,418 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-25 23:41:20,419 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-25 23:41:20,419 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-25 23:41:20,420 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-25 23:41:20,420 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-25 23:41:20,420 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-25 23:41:20,420 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-08-25 23:41:20,420 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-08-25 23:41:20,420 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-25 23:41:20,420 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-25 23:41:20,421 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-25 23:41:20,421 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-25 23:41:20,421 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-25 23:41:20,421 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-25 23:41:20,421 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-25 23:41:20,421 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-25 23:41:20,422 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-25 23:41:20,422 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-25 23:41:20,422 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-25 23:41:20,422 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-08-25 23:41:20,422 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-08-25 23:41:20,422 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-25 23:41:20,423 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-25 23:41:20,423 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-08-25 23:41:20,423 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bcef4cc70c9b5c3730a533760ba731f42f0ccc80 [2021-08-25 23:41:20,750 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-25 23:41:20,768 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-25 23:41:20,770 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-25 23:41:20,771 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-25 23:41:20,772 INFO L275 PluginConnector]: CDTParser initialized [2021-08-25 23:41:20,773 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cdfpl/newton_2_7.i [2021-08-25 23:41:20,844 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3782f8de6/f882e3ea2efe486ab7da03b786fb0795/FLAGf84141c29 [2021-08-25 23:41:21,241 INFO L306 CDTParser]: Found 1 translation units. [2021-08-25 23:41:21,242 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_2_7.i [2021-08-25 23:41:21,249 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3782f8de6/f882e3ea2efe486ab7da03b786fb0795/FLAGf84141c29 [2021-08-25 23:41:21,266 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3782f8de6/f882e3ea2efe486ab7da03b786fb0795 [2021-08-25 23:41:21,269 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-25 23:41:21,271 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-25 23:41:21,273 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-25 23:41:21,274 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-25 23:41:21,277 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-25 23:41:21,277 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 11:41:21" (1/1) ... [2021-08-25 23:41:21,278 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@238245f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:41:21, skipping insertion in model container [2021-08-25 23:41:21,279 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 11:41:21" (1/1) ... [2021-08-25 23:41:21,284 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-25 23:41:21,298 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-25 23:41:21,465 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_2_7.i[1245,1258] [2021-08-25 23:41:21,468 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-25 23:41:21,478 INFO L203 MainTranslator]: Completed pre-run [2021-08-25 23:41:21,515 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_2_7.i[1245,1258] [2021-08-25 23:41:21,535 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-25 23:41:21,547 INFO L208 MainTranslator]: Completed translation [2021-08-25 23:41:21,548 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:41:21 WrapperNode [2021-08-25 23:41:21,548 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-25 23:41:21,549 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-25 23:41:21,549 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-25 23:41:21,549 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-25 23:41:21,556 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:41:21" (1/1) ... [2021-08-25 23:41:21,563 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:41:21" (1/1) ... [2021-08-25 23:41:21,580 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-25 23:41:21,581 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-25 23:41:21,581 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-25 23:41:21,581 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-25 23:41:21,587 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:41:21" (1/1) ... [2021-08-25 23:41:21,587 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:41:21" (1/1) ... [2021-08-25 23:41:21,590 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:41:21" (1/1) ... [2021-08-25 23:41:21,590 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:41:21" (1/1) ... [2021-08-25 23:41:21,597 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:41:21" (1/1) ... [2021-08-25 23:41:21,599 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:41:21" (1/1) ... [2021-08-25 23:41:21,600 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:41:21" (1/1) ... [2021-08-25 23:41:21,603 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-25 23:41:21,604 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-25 23:41:21,604 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-25 23:41:21,604 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-25 23:41:21,604 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:41:21" (1/1) ... [2021-08-25 23:41:21,610 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-25 23:41:21,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-25 23:41:21,634 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-25 23:41:21,654 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-25 23:41:21,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-08-25 23:41:21,671 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-25 23:41:21,671 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-25 23:41:21,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-25 23:41:33,091 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-25 23:41:33,092 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2021-08-25 23:41:33,093 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 11:41:33 BoogieIcfgContainer [2021-08-25 23:41:33,093 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-25 23:41:33,095 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-25 23:41:33,095 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-25 23:41:33,097 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-25 23:41:33,098 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.08 11:41:21" (1/3) ... [2021-08-25 23:41:33,098 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2398bbb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 11:41:33, skipping insertion in model container [2021-08-25 23:41:33,098 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:41:21" (2/3) ... [2021-08-25 23:41:33,099 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2398bbb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 11:41:33, skipping insertion in model container [2021-08-25 23:41:33,112 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 11:41:33" (3/3) ... [2021-08-25 23:41:33,114 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_2_7.i [2021-08-25 23:41:33,118 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-25 23:41:33,118 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-25 23:41:33,164 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-25 23:41:33,169 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 [2021-08-25 23:41:33,169 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-08-25 23:41:33,179 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 14 states have internal predecessors, (16), 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) [2021-08-25 23:41:33,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-25 23:41:33,182 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 23:41:33,182 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-25 23:41:33,182 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 23:41:33,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 23:41:33,186 INFO L82 PathProgramCache]: Analyzing trace with hash -1267787092, now seen corresponding path program 1 times [2021-08-25 23:41:33,195 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-25 23:41:33,196 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [327407569] [2021-08-25 23:41:33,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 23:41:33,197 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-25 23:41:33,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-25 23:41:33,200 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-25 23:41:33,206 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-08-25 23:41:34,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 23:41:35,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 1 conjunts are in the unsatisfiable core [2021-08-25 23:41:35,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-25 23:41:35,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-25 23:41:35,214 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-25 23:41:35,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-25 23:41:35,328 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-25 23:41:35,328 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [327407569] [2021-08-25 23:41:35,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [327407569] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-25 23:41:35,329 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-25 23:41:35,329 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-08-25 23:41:35,330 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774019785] [2021-08-25 23:41:35,334 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-25 23:41:35,334 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-25 23:41:35,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-25 23:41:35,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-25 23:41:35,346 INFO L87 Difference]: Start difference. First operand has 15 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 14 states have internal predecessors, (16), 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 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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) [2021-08-25 23:41:35,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 23:41:35,357 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2021-08-25 23:41:35,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-25 23:41:35,358 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 10 [2021-08-25 23:41:35,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 23:41:35,364 INFO L225 Difference]: With dead ends: 27 [2021-08-25 23:41:35,364 INFO L226 Difference]: Without dead ends: 11 [2021-08-25 23:41:35,366 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-25 23:41:35,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-08-25 23:41:35,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-08-25 23:41:35,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.0) internal successors, (10), 10 states have internal predecessors, (10), 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) [2021-08-25 23:41:35,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 10 transitions. [2021-08-25 23:41:35,389 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 10 transitions. Word has length 10 [2021-08-25 23:41:35,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 23:41:35,389 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 10 transitions. [2021-08-25 23:41:35,390 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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) [2021-08-25 23:41:35,390 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 10 transitions. [2021-08-25 23:41:35,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-25 23:41:35,390 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 23:41:35,390 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-25 23:41:35,478 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-08-25 23:41:35,613 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-25 23:41:35,613 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 23:41:35,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 23:41:35,614 INFO L82 PathProgramCache]: Analyzing trace with hash -2077133718, now seen corresponding path program 1 times [2021-08-25 23:41:35,614 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-25 23:41:35,615 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1891227119] [2021-08-25 23:41:35,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 23:41:35,615 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-25 23:41:35,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-25 23:41:35,616 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-25 23:41:35,621 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-08-25 23:44:47,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-25 23:44:47,130 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-25 23:44:56,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-25 23:44:56,785 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-08-25 23:44:56,786 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-08-25 23:44:56,787 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-25 23:44:56,872 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-08-25 23:44:56,989 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-25 23:44:56,993 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-25 23:44:57,016 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.08 11:44:57 BoogieIcfgContainer [2021-08-25 23:44:57,016 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-25 23:44:57,017 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-25 23:44:57,017 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-25 23:44:57,017 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-25 23:44:57,018 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 11:41:33" (3/4) ... [2021-08-25 23:44:57,020 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-08-25 23:44:57,048 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-25 23:44:57,048 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-25 23:44:57,050 INFO L168 Benchmark]: Toolchain (without parser) took 215777.67 ms. Allocated memory was 48.2 MB in the beginning and 60.8 MB in the end (delta: 12.6 MB). Free memory was 24.3 MB in the beginning and 28.5 MB in the end (delta: -4.2 MB). Peak memory consumption was 10.4 MB. Max. memory is 16.1 GB. [2021-08-25 23:44:57,050 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 48.2 MB. Free memory was 30.8 MB in the beginning and 30.8 MB in the end (delta: 39.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-25 23:44:57,051 INFO L168 Benchmark]: CACSL2BoogieTranslator took 275.05 ms. Allocated memory was 48.2 MB in the beginning and 60.8 MB in the end (delta: 12.6 MB). Free memory was 24.1 MB in the beginning and 43.5 MB in the end (delta: -19.4 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. [2021-08-25 23:44:57,052 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.87 ms. Allocated memory is still 60.8 MB. Free memory was 43.5 MB in the beginning and 41.8 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-25 23:44:57,052 INFO L168 Benchmark]: Boogie Preprocessor took 22.29 ms. Allocated memory is still 60.8 MB. Free memory was 41.8 MB in the beginning and 40.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-25 23:44:57,052 INFO L168 Benchmark]: RCFGBuilder took 11489.82 ms. Allocated memory is still 60.8 MB. Free memory was 40.5 MB in the beginning and 40.8 MB in the end (delta: -281.6 kB). Peak memory consumption was 14.0 MB. Max. memory is 16.1 GB. [2021-08-25 23:44:57,053 INFO L168 Benchmark]: TraceAbstraction took 203921.83 ms. Allocated memory is still 60.8 MB. Free memory was 40.4 MB in the beginning and 30.6 MB in the end (delta: 9.8 MB). Peak memory consumption was 11.1 MB. Max. memory is 16.1 GB. [2021-08-25 23:44:57,053 INFO L168 Benchmark]: Witness Printer took 31.00 ms. Allocated memory is still 60.8 MB. Free memory was 30.3 MB in the beginning and 28.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-25 23:44:57,056 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 48.2 MB. Free memory was 30.8 MB in the beginning and 30.8 MB in the end (delta: 39.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 275.05 ms. Allocated memory was 48.2 MB in the beginning and 60.8 MB in the end (delta: 12.6 MB). Free memory was 24.1 MB in the beginning and 43.5 MB in the end (delta: -19.4 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 30.87 ms. Allocated memory is still 60.8 MB. Free memory was 43.5 MB in the beginning and 41.8 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 22.29 ms. Allocated memory is still 60.8 MB. Free memory was 41.8 MB in the beginning and 40.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 11489.82 ms. Allocated memory is still 60.8 MB. Free memory was 40.5 MB in the beginning and 40.8 MB in the end (delta: -281.6 kB). Peak memory consumption was 14.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 203921.83 ms. Allocated memory is still 60.8 MB. Free memory was 40.4 MB in the beginning and 30.6 MB in the end (delta: 9.8 MB). Peak memory consumption was 11.1 MB. Max. memory is 16.1 GB. * Witness Printer took 31.00 ms. Allocated memory is still 60.8 MB. Free memory was 30.3 MB in the beginning and 28.5 MB in the end (delta: 1.8 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, 0.0ms 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); [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; [L35] x = x - f(x)/fp(x) [L41] COND TRUE !(x < 0.1) [L42] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 203829.7ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 6.0ms, AutomataDifference: 31.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 6.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 14 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred 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: 11.8ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 25.0ms SsaConstructionTime, 193210.1ms SatisfiabilityAnalysisTime, 348.4ms InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 18 SizeOfPredicates, 0 NumberOfNonLiveVariables, 40 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! [2021-08-25 23:44:57,234 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...