./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/floats-cdfpl/newton_1_6.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_1_6.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 c899a11b075f77e8271e38f51a1c9ce4fc2e25ab ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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_1_6.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 c899a11b075f77e8271e38f51a1c9ce4fc2e25ab ................................................................................................................................................................................................................................................................................................ 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 23:40:13,910 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-25 23:40:13,912 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-25 23:40:13,947 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-25 23:40:13,947 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-25 23:40:13,950 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-25 23:40:13,951 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-25 23:40:13,956 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-25 23:40:13,958 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-25 23:40:13,962 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-25 23:40:13,963 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-25 23:40:13,964 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-25 23:40:13,964 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-25 23:40:13,966 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-25 23:40:13,967 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-25 23:40:13,973 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-25 23:40:13,973 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-25 23:40:13,974 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-25 23:40:13,975 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-25 23:40:13,976 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-25 23:40:13,977 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-25 23:40:13,979 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-25 23:40:13,981 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-25 23:40:13,981 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-25 23:40:13,992 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-25 23:40:13,993 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-25 23:40:13,993 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-25 23:40:13,994 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-25 23:40:13,994 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-25 23:40:13,994 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-25 23:40:13,995 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-25 23:40:13,995 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-25 23:40:13,996 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-25 23:40:13,997 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-25 23:40:13,997 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-25 23:40:13,997 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-25 23:40:13,998 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-25 23:40:13,998 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-25 23:40:13,998 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-25 23:40:13,999 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-25 23:40:14,000 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-25 23:40:14,000 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-25 23:40:14,026 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-25 23:40:14,026 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-25 23:40:14,027 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-25 23:40:14,027 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-25 23:40:14,028 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-25 23:40:14,029 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-25 23:40:14,029 INFO L138 SettingsManager]: * Use SBE=true [2021-08-25 23:40:14,029 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-25 23:40:14,029 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-25 23:40:14,029 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-25 23:40:14,030 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-25 23:40:14,030 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-25 23:40:14,030 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-25 23:40:14,030 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-25 23:40:14,030 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-25 23:40:14,030 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-25 23:40:14,030 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-25 23:40:14,030 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-25 23:40:14,030 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-25 23:40:14,030 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-25 23:40:14,030 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-25 23:40:14,031 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-25 23:40:14,031 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-25 23:40:14,031 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-25 23:40:14,031 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-25 23:40:14,031 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-25 23:40:14,031 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-25 23:40:14,031 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-25 23:40:14,031 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-25 23:40:14,031 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-25 23:40:14,031 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c899a11b075f77e8271e38f51a1c9ce4fc2e25ab [2021-08-25 23:40:14,316 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-25 23:40:14,330 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-25 23:40:14,332 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-25 23:40:14,333 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-25 23:40:14,333 INFO L275 PluginConnector]: CDTParser initialized [2021-08-25 23:40:14,334 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cdfpl/newton_1_6.i [2021-08-25 23:40:14,389 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/000ca73c5/4b71324c12cd419293c1a4e8acf8082b/FLAGfd2e3ae96 [2021-08-25 23:40:14,725 INFO L306 CDTParser]: Found 1 translation units. [2021-08-25 23:40:14,726 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_1_6.i [2021-08-25 23:40:14,730 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/000ca73c5/4b71324c12cd419293c1a4e8acf8082b/FLAGfd2e3ae96 [2021-08-25 23:40:14,738 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/000ca73c5/4b71324c12cd419293c1a4e8acf8082b [2021-08-25 23:40:14,740 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-25 23:40:14,741 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-25 23:40:14,742 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-25 23:40:14,742 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-25 23:40:14,745 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-25 23:40:14,745 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 11:40:14" (1/1) ... [2021-08-25 23:40:14,746 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4610bcd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:40:14, skipping insertion in model container [2021-08-25 23:40:14,746 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 11:40:14" (1/1) ... [2021-08-25 23:40:14,751 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-25 23:40:14,759 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-25 23:40:14,897 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_1_6.i[1224,1237] [2021-08-25 23:40:14,900 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-25 23:40:14,904 INFO L203 MainTranslator]: Completed pre-run [2021-08-25 23:40:14,959 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_1_6.i[1224,1237] [2021-08-25 23:40:14,962 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-25 23:40:14,971 INFO L208 MainTranslator]: Completed translation [2021-08-25 23:40:14,972 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:40:14 WrapperNode [2021-08-25 23:40:14,973 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-25 23:40:14,974 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-25 23:40:14,974 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-25 23:40:14,975 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-25 23:40:14,979 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:40:14" (1/1) ... [2021-08-25 23:40:14,984 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:40:14" (1/1) ... [2021-08-25 23:40:14,998 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-25 23:40:14,998 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-25 23:40:14,999 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-25 23:40:14,999 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-25 23:40:15,004 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:40:14" (1/1) ... [2021-08-25 23:40:15,004 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:40:14" (1/1) ... [2021-08-25 23:40:15,011 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:40:14" (1/1) ... [2021-08-25 23:40:15,012 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:40:14" (1/1) ... [2021-08-25 23:40:15,021 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:40:14" (1/1) ... [2021-08-25 23:40:15,023 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:40:14" (1/1) ... [2021-08-25 23:40:15,024 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:40:14" (1/1) ... [2021-08-25 23:40:15,028 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-25 23:40:15,028 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-25 23:40:15,029 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-25 23:40:15,029 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-25 23:40:15,029 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:40:14" (1/1) ... [2021-08-25 23:40:15,034 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-25 23:40:15,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-25 23:40:15,046 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 23:40:15,068 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 23:40:15,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-25 23:40:15,080 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-25 23:40:15,081 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-25 23:40:15,081 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-25 23:40:15,277 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-25 23:40:15,277 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-08-25 23:40:15,278 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 11:40:15 BoogieIcfgContainer [2021-08-25 23:40:15,278 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-25 23:40:15,279 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-25 23:40:15,279 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-25 23:40:15,281 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-25 23:40:15,281 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.08 11:40:14" (1/3) ... [2021-08-25 23:40:15,282 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7983814e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 11:40:15, skipping insertion in model container [2021-08-25 23:40:15,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:40:14" (2/3) ... [2021-08-25 23:40:15,282 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7983814e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 11:40:15, skipping insertion in model container [2021-08-25 23:40:15,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 11:40:15" (3/3) ... [2021-08-25 23:40:15,283 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_1_6.i [2021-08-25 23:40:15,286 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-25 23:40:15,286 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-25 23:40:15,346 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-25 23:40:15,372 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 23:40:15,372 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-08-25 23:40:15,382 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) [2021-08-25 23:40:15,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-08-25 23:40:15,384 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 23:40:15,385 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-08-25 23:40:15,385 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 23:40:15,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 23:40:15,388 INFO L82 PathProgramCache]: Analyzing trace with hash 119351050, now seen corresponding path program 1 times [2021-08-25 23:40:15,397 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 23:40:15,398 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038702941] [2021-08-25 23:40:15,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 23:40:15,398 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 23:40:15,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 23:40:15,505 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 23:40:15,506 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 23:40:15,506 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038702941] [2021-08-25 23:40:15,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038702941] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-25 23:40:15,506 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-25 23:40:15,507 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-25 23:40:15,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795136507] [2021-08-25 23:40:15,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-25 23:40:15,511 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 23:40:15,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-25 23:40:15,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-25 23:40:15,524 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) [2021-08-25 23:40:15,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 23:40:15,534 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2021-08-25 23:40:15,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-25 23:40:15,534 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 [2021-08-25 23:40:15,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 23:40:15,539 INFO L225 Difference]: With dead ends: 23 [2021-08-25 23:40:15,539 INFO L226 Difference]: Without dead ends: 9 [2021-08-25 23:40:15,541 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 23:40:15,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-08-25 23:40:15,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-08-25 23:40:15,557 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) [2021-08-25 23:40:15,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 8 transitions. [2021-08-25 23:40:15,558 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 8 transitions. Word has length 8 [2021-08-25 23:40:15,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 23:40:15,559 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 8 transitions. [2021-08-25 23:40:15,559 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) [2021-08-25 23:40:15,559 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2021-08-25 23:40:15,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-08-25 23:40:15,560 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 23:40:15,560 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-08-25 23:40:15,560 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-25 23:40:15,560 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 23:40:15,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 23:40:15,563 INFO L82 PathProgramCache]: Analyzing trace with hash 176609352, now seen corresponding path program 1 times [2021-08-25 23:40:15,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 23:40:15,564 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417156471] [2021-08-25 23:40:15,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 23:40:15,564 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 23:40:15,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-25 23:40:15,589 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-25 23:40:15,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-25 23:40:15,616 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-25 23:40:15,622 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-08-25 23:40:15,624 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-25 23:40:15,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-25 23:40:15,634 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-25 23:40:15,655 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.08 11:40:15 BoogieIcfgContainer [2021-08-25 23:40:15,656 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-25 23:40:15,656 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-25 23:40:15,656 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-25 23:40:15,657 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-25 23:40:15,657 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 11:40:15" (3/4) ... [2021-08-25 23:40:15,659 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-08-25 23:40:15,659 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-25 23:40:15,661 INFO L168 Benchmark]: Toolchain (without parser) took 918.65 ms. Allocated memory was 50.3 MB in the beginning and 71.3 MB in the end (delta: 21.0 MB). Free memory was 25.5 MB in the beginning and 35.5 MB in the end (delta: -9.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 16.1 GB. [2021-08-25 23:40:15,661 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 50.3 MB. Free memory was 31.2 MB in the beginning and 31.2 MB in the end (delta: 30.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-25 23:40:15,663 INFO L168 Benchmark]: CACSL2BoogieTranslator took 231.08 ms. Allocated memory was 50.3 MB in the beginning and 71.3 MB in the end (delta: 21.0 MB). Free memory was 25.3 MB in the beginning and 54.5 MB in the end (delta: -29.1 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. [2021-08-25 23:40:15,664 INFO L168 Benchmark]: Boogie Procedure Inliner took 23.87 ms. Allocated memory is still 71.3 MB. Free memory was 54.3 MB in the beginning and 52.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-25 23:40:15,668 INFO L168 Benchmark]: Boogie Preprocessor took 29.32 ms. Allocated memory is still 71.3 MB. Free memory was 52.8 MB in the beginning and 51.8 MB in the end (delta: 990.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-25 23:40:15,668 INFO L168 Benchmark]: RCFGBuilder took 249.96 ms. Allocated memory is still 71.3 MB. Free memory was 51.8 MB in the beginning and 40.8 MB in the end (delta: 10.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-08-25 23:40:15,669 INFO L168 Benchmark]: TraceAbstraction took 376.50 ms. Allocated memory is still 71.3 MB. Free memory was 40.3 MB in the beginning and 35.9 MB in the end (delta: 4.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 16.1 GB. [2021-08-25 23:40:15,669 INFO L168 Benchmark]: Witness Printer took 2.76 ms. Allocated memory is still 71.3 MB. Free memory was 35.9 MB in the beginning and 35.6 MB in the end (delta: 278.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-25 23:40:15,676 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 50.3 MB. Free memory was 31.2 MB in the beginning and 31.2 MB in the end (delta: 30.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 231.08 ms. Allocated memory was 50.3 MB in the beginning and 71.3 MB in the end (delta: 21.0 MB). Free memory was 25.3 MB in the beginning and 54.5 MB in the end (delta: -29.1 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 23.87 ms. Allocated memory is still 71.3 MB. Free memory was 54.3 MB in the beginning and 52.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 29.32 ms. Allocated memory is still 71.3 MB. Free memory was 52.8 MB in the beginning and 51.8 MB in the end (delta: 990.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 249.96 ms. Allocated memory is still 71.3 MB. Free memory was 51.8 MB in the beginning and 40.8 MB in the end (delta: 10.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 376.50 ms. Allocated memory is still 71.3 MB. Free memory was 40.3 MB in the beginning and 35.9 MB in the end (delta: 4.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 16.1 GB. * Witness Printer took 2.76 ms. Allocated memory is still 71.3 MB. Free memory was 35.9 MB in the beginning and 35.6 MB in the end (delta: 278.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 42]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 31, overapproximation of someBinaryDOUBLEComparisonOperation at line 41, overapproximation of someBinaryArithmeticFLOAToperation at line 33. Possible FailurePath: [L30] float IN = __VERIFIER_nondet_float(); [L15] COND FALSE !(!cond) [L20] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L25] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L33] float x = IN - f(IN)/fp(IN); [L41] COND TRUE !(x < 0.1) [L42] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 288.8ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 6.4ms, AutomataDifference: 28.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 5.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 12 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 9.1ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 13.0ms SsaConstructionTime, 34.4ms SatisfiabilityAnalysisTime, 40.1ms 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 [2021-08-25 23:40:15,705 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 23:40:17,539 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2021-08-25 23:40:17,608 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-25 23:40:17,608 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-25 23:40:17,609 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-25 23:40:17,609 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-25 23:40:17,610 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-25 23:40:17,610 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-25 23:40:17,610 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-25 23:40:17,611 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-25 23:40:17,611 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-25 23:40:17,611 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-25 23:40:17,612 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-25 23:40:17,612 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-08-25 23:40:17,630 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-25 23:40:17,630 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-25 23:40:17,630 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-25 23:40:17,630 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-25 23:40:17,631 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-25 23:40:17,631 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-25 23:40:17,631 INFO L138 SettingsManager]: * Use SBE=true [2021-08-25 23:40:17,631 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-25 23:40:17,631 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-25 23:40:17,632 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-25 23:40:17,632 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-25 23:40:17,632 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-25 23:40:17,632 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-25 23:40:17,632 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-25 23:40:17,632 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-08-25 23:40:17,632 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-08-25 23:40:17,632 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-25 23:40:17,632 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-25 23:40:17,632 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-25 23:40:17,632 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-25 23:40:17,633 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-25 23:40:17,633 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-25 23:40:17,633 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-25 23:40:17,633 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-25 23:40:17,633 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-25 23:40:17,633 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-25 23:40:17,633 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-25 23:40:17,633 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-08-25 23:40:17,633 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-08-25 23:40:17,633 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-25 23:40:17,633 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-25 23:40:17,633 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-08-25 23:40:17,634 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c899a11b075f77e8271e38f51a1c9ce4fc2e25ab [2021-08-25 23:40:18,073 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-25 23:40:18,096 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-25 23:40:18,098 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-25 23:40:18,098 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-25 23:40:18,099 INFO L275 PluginConnector]: CDTParser initialized [2021-08-25 23:40:18,101 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cdfpl/newton_1_6.i [2021-08-25 23:40:18,142 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/009cb1e75/640b9ccee852473aa19fb89bd1a13f69/FLAG2be870b50 [2021-08-25 23:40:18,481 INFO L306 CDTParser]: Found 1 translation units. [2021-08-25 23:40:18,482 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_1_6.i [2021-08-25 23:40:18,487 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/009cb1e75/640b9ccee852473aa19fb89bd1a13f69/FLAG2be870b50 [2021-08-25 23:40:18,901 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/009cb1e75/640b9ccee852473aa19fb89bd1a13f69 [2021-08-25 23:40:18,902 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-25 23:40:18,903 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-25 23:40:18,904 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-25 23:40:18,904 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-25 23:40:18,923 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-25 23:40:18,923 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 11:40:18" (1/1) ... [2021-08-25 23:40:18,925 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@423f9bb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:40:18, skipping insertion in model container [2021-08-25 23:40:18,925 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 11:40:18" (1/1) ... [2021-08-25 23:40:18,929 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-25 23:40:18,950 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-25 23:40:19,163 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_1_6.i[1224,1237] [2021-08-25 23:40:19,165 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-25 23:40:19,173 INFO L203 MainTranslator]: Completed pre-run [2021-08-25 23:40:19,214 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_1_6.i[1224,1237] [2021-08-25 23:40:19,215 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-25 23:40:19,226 INFO L208 MainTranslator]: Completed translation [2021-08-25 23:40:19,228 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:40:19 WrapperNode [2021-08-25 23:40:19,228 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-25 23:40:19,229 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-25 23:40:19,229 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-25 23:40:19,229 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-25 23:40:19,233 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:40:19" (1/1) ... [2021-08-25 23:40:19,247 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:40:19" (1/1) ... [2021-08-25 23:40:19,263 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-25 23:40:19,264 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-25 23:40:19,264 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-25 23:40:19,264 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-25 23:40:19,269 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:40:19" (1/1) ... [2021-08-25 23:40:19,269 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:40:19" (1/1) ... [2021-08-25 23:40:19,273 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:40:19" (1/1) ... [2021-08-25 23:40:19,273 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:40:19" (1/1) ... [2021-08-25 23:40:19,287 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:40:19" (1/1) ... [2021-08-25 23:40:19,289 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:40:19" (1/1) ... [2021-08-25 23:40:19,292 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:40:19" (1/1) ... [2021-08-25 23:40:19,294 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-25 23:40:19,295 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-25 23:40:19,295 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-25 23:40:19,295 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-25 23:40:19,295 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:40:19" (1/1) ... [2021-08-25 23:40:19,300 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-25 23:40:19,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-25 23:40:19,328 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 23:40:19,345 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 23:40:19,358 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-08-25 23:40:19,358 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-25 23:40:19,358 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-25 23:40:19,358 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-25 23:40:26,222 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-25 23:40:26,222 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-08-25 23:40:26,223 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 11:40:26 BoogieIcfgContainer [2021-08-25 23:40:26,224 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-25 23:40:26,225 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-25 23:40:26,225 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-25 23:40:26,227 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-25 23:40:26,227 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.08 11:40:18" (1/3) ... [2021-08-25 23:40:26,227 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@492a507f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 11:40:26, skipping insertion in model container [2021-08-25 23:40:26,228 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:40:19" (2/3) ... [2021-08-25 23:40:26,228 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@492a507f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 11:40:26, skipping insertion in model container [2021-08-25 23:40:26,228 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 11:40:26" (3/3) ... [2021-08-25 23:40:26,229 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_1_6.i [2021-08-25 23:40:26,232 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-25 23:40:26,232 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-25 23:40:26,285 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-25 23:40:26,304 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 23:40:26,304 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-08-25 23:40:26,322 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) [2021-08-25 23:40:26,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-08-25 23:40:26,327 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 23:40:26,328 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-08-25 23:40:26,329 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 23:40:26,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 23:40:26,333 INFO L82 PathProgramCache]: Analyzing trace with hash 119351050, now seen corresponding path program 1 times [2021-08-25 23:40:26,340 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-25 23:40:26,341 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1448571423] [2021-08-25 23:40:26,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 23:40:26,342 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-25 23:40:26,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-25 23:40:26,344 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 23:40:26,345 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 23:40:27,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 23:40:27,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 1 conjunts are in the unsatisfiable core [2021-08-25 23:40:27,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-25 23:40:27,323 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 23:40:27,323 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-25 23:40:27,377 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 23:40:27,378 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-25 23:40:27,378 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1448571423] [2021-08-25 23:40:27,378 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1448571423] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-25 23:40:27,378 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-25 23:40:27,378 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-08-25 23:40:27,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628096106] [2021-08-25 23:40:27,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-25 23:40:27,382 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-25 23:40:27,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-25 23:40:27,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-25 23:40:27,391 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 23:40:27,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 23:40:27,399 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2021-08-25 23:40:27,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-25 23:40:27,400 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 [2021-08-25 23:40:27,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 23:40:27,404 INFO L225 Difference]: With dead ends: 23 [2021-08-25 23:40:27,404 INFO L226 Difference]: Without dead ends: 9 [2021-08-25 23:40:27,406 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 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 23:40:27,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-08-25 23:40:27,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-08-25 23:40:27,421 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) [2021-08-25 23:40:27,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 8 transitions. [2021-08-25 23:40:27,422 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 8 transitions. Word has length 8 [2021-08-25 23:40:27,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 23:40:27,423 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 8 transitions. [2021-08-25 23:40:27,423 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) [2021-08-25 23:40:27,423 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2021-08-25 23:40:27,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-08-25 23:40:27,424 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 23:40:27,424 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-08-25 23:40:27,462 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 23:40:27,644 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 23:40:27,644 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 23:40:27,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 23:40:27,645 INFO L82 PathProgramCache]: Analyzing trace with hash 176609352, now seen corresponding path program 1 times [2021-08-25 23:40:27,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-25 23:40:27,646 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1402094946] [2021-08-25 23:40:27,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 23:40:27,646 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-25 23:40:27,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-25 23:40:27,650 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 23:40:27,651 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 23:40:30,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-25 23:40:30,466 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-25 23:40:35,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-25 23:40:36,059 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-08-25 23:40:36,060 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-08-25 23:40:36,061 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-25 23:40:36,111 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 23:40:36,262 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 23:40:36,267 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-25 23:40:36,288 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.08 11:40:36 BoogieIcfgContainer [2021-08-25 23:40:36,289 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-25 23:40:36,290 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-25 23:40:36,290 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-25 23:40:36,290 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-25 23:40:36,291 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 11:40:26" (3/4) ... [2021-08-25 23:40:36,292 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-08-25 23:40:36,370 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-25 23:40:36,370 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-25 23:40:36,375 INFO L168 Benchmark]: Toolchain (without parser) took 17467.95 ms. Allocated memory was 60.8 MB in the beginning and 75.5 MB in the end (delta: 14.7 MB). Free memory was 41.2 MB in the beginning and 44.2 MB in the end (delta: -2.9 MB). Peak memory consumption was 11.1 MB. Max. memory is 16.1 GB. [2021-08-25 23:40:36,376 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 60.8 MB. Free memory was 42.4 MB in the beginning and 42.3 MB in the end (delta: 83.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-25 23:40:36,377 INFO L168 Benchmark]: CACSL2BoogieTranslator took 324.36 ms. Allocated memory is still 60.8 MB. Free memory was 41.0 MB in the beginning and 42.8 MB in the end (delta: -1.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-08-25 23:40:36,377 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.11 ms. Allocated memory is still 60.8 MB. Free memory was 42.8 MB in the beginning and 41.2 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-25 23:40:36,377 INFO L168 Benchmark]: Boogie Preprocessor took 30.33 ms. Allocated memory is still 60.8 MB. Free memory was 41.2 MB in the beginning and 39.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-25 23:40:36,378 INFO L168 Benchmark]: RCFGBuilder took 6929.05 ms. Allocated memory is still 60.8 MB. Free memory was 39.8 MB in the beginning and 27.7 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-08-25 23:40:36,378 INFO L168 Benchmark]: TraceAbstraction took 10064.79 ms. Allocated memory was 60.8 MB in the beginning and 75.5 MB in the end (delta: 14.7 MB). Free memory was 27.2 MB in the beginning and 45.8 MB in the end (delta: -18.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-25 23:40:36,378 INFO L168 Benchmark]: Witness Printer took 80.49 ms. Allocated memory is still 75.5 MB. Free memory was 45.8 MB in the beginning and 44.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-25 23:40:36,383 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 60.8 MB. Free memory was 42.4 MB in the beginning and 42.3 MB in the end (delta: 83.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 324.36 ms. Allocated memory is still 60.8 MB. Free memory was 41.0 MB in the beginning and 42.8 MB in the end (delta: -1.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 34.11 ms. Allocated memory is still 60.8 MB. Free memory was 42.8 MB in the beginning and 41.2 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 30.33 ms. Allocated memory is still 60.8 MB. Free memory was 41.2 MB in the beginning and 39.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 6929.05 ms. Allocated memory is still 60.8 MB. Free memory was 39.8 MB in the beginning and 27.7 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 10064.79 ms. Allocated memory was 60.8 MB in the beginning and 75.5 MB in the end (delta: 14.7 MB). Free memory was 27.2 MB in the beginning and 45.8 MB in the end (delta: -18.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 80.49 ms. Allocated memory is still 75.5 MB. Free memory was 45.8 MB in the beginning and 44.2 MB in the end (delta: 1.6 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); [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: 9982.9ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 18.4ms, AutomataDifference: 22.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 5.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 12 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 8.7ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 20.5ms SsaConstructionTime, 3595.2ms SatisfiabilityAnalysisTime, 175.0ms 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! [2021-08-25 23:40:36,519 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...