./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/floats-cdfpl/newton_2_8.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 54858612 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_8.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 80de2bcb413ca82cf36ee5cabb22cc23421a986b ............................................................................................................................................................................................................................................................................... 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_8.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 80de2bcb413ca82cf36ee5cabb22cc23421a986b ............................................................................................................................................................................................................................................................................................ 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 0.2.0-5485861 [2020-10-25 21:30:49,819 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-25 21:30:49,824 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-25 21:30:49,887 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-25 21:30:49,887 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-25 21:30:49,895 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-25 21:30:49,898 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-25 21:30:49,906 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-25 21:30:49,910 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-25 21:30:49,917 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-25 21:30:49,919 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-25 21:30:49,924 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-25 21:30:49,925 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-25 21:30:49,929 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-25 21:30:49,931 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-25 21:30:49,933 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-25 21:30:49,934 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-25 21:30:49,938 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-25 21:30:49,941 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-25 21:30:49,951 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-25 21:30:49,954 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-25 21:30:49,956 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-25 21:30:49,958 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-25 21:30:49,960 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-25 21:30:49,964 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-25 21:30:49,964 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-25 21:30:49,965 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-25 21:30:49,967 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-25 21:30:49,968 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-25 21:30:49,969 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-25 21:30:49,970 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-25 21:30:49,971 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-25 21:30:49,973 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-25 21:30:49,974 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-25 21:30:49,976 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-25 21:30:49,976 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-25 21:30:49,979 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-25 21:30:49,980 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-25 21:30:49,980 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-25 21:30:49,982 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-25 21:30:49,983 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-25 21:30:49,984 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-25 21:30:50,042 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-25 21:30:50,043 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-25 21:30:50,047 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-25 21:30:50,047 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-25 21:30:50,048 INFO L138 SettingsManager]: * Use SBE=true [2020-10-25 21:30:50,048 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-25 21:30:50,048 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-25 21:30:50,049 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-25 21:30:50,049 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-25 21:30:50,049 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-25 21:30:50,051 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-25 21:30:50,051 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-25 21:30:50,051 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-25 21:30:50,052 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-25 21:30:50,052 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-25 21:30:50,052 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-25 21:30:50,052 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-25 21:30:50,052 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-25 21:30:50,053 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-25 21:30:50,053 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-25 21:30:50,053 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-25 21:30:50,053 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-25 21:30:50,053 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-25 21:30:50,054 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-25 21:30:50,054 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-25 21:30:50,054 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-25 21:30:50,054 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-25 21:30:50,054 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-25 21:30:50,055 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-25 21:30:50,055 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 80de2bcb413ca82cf36ee5cabb22cc23421a986b [2020-10-25 21:30:50,452 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-25 21:30:50,513 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-25 21:30:50,516 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-25 21:30:50,518 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-25 21:30:50,520 INFO L275 PluginConnector]: CDTParser initialized [2020-10-25 21:30:50,521 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cdfpl/newton_2_8.i [2020-10-25 21:30:50,630 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8cb0b5fcf/996c7161f36945e4b529d0d22c82c975/FLAG7a74c1140 [2020-10-25 21:30:51,389 INFO L306 CDTParser]: Found 1 translation units. [2020-10-25 21:30:51,390 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_2_8.i [2020-10-25 21:30:51,401 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8cb0b5fcf/996c7161f36945e4b529d0d22c82c975/FLAG7a74c1140 [2020-10-25 21:30:51,712 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8cb0b5fcf/996c7161f36945e4b529d0d22c82c975 [2020-10-25 21:30:51,715 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-25 21:30:51,723 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-25 21:30:51,725 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-25 21:30:51,725 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-25 21:30:51,735 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-25 21:30:51,736 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 09:30:51" (1/1) ... [2020-10-25 21:30:51,741 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33bec717 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:30:51, skipping insertion in model container [2020-10-25 21:30:51,741 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 09:30:51" (1/1) ... [2020-10-25 21:30:51,750 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-25 21:30:51,772 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-25 21:30:51,983 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 21:30:51,995 INFO L203 MainTranslator]: Completed pre-run [2020-10-25 21:30:52,020 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 21:30:52,039 INFO L208 MainTranslator]: Completed translation [2020-10-25 21:30:52,040 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:30:52 WrapperNode [2020-10-25 21:30:52,040 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-25 21:30:52,041 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-25 21:30:52,042 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-25 21:30:52,042 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-25 21:30:52,052 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:30:52" (1/1) ... [2020-10-25 21:30:52,062 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:30:52" (1/1) ... [2020-10-25 21:30:52,088 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-25 21:30:52,090 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-25 21:30:52,090 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-25 21:30:52,090 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-25 21:30:52,100 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:30:52" (1/1) ... [2020-10-25 21:30:52,101 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:30:52" (1/1) ... [2020-10-25 21:30:52,103 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:30:52" (1/1) ... [2020-10-25 21:30:52,103 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:30:52" (1/1) ... [2020-10-25 21:30:52,110 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:30:52" (1/1) ... [2020-10-25 21:30:52,113 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:30:52" (1/1) ... [2020-10-25 21:30:52,115 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:30:52" (1/1) ... [2020-10-25 21:30:52,117 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-25 21:30:52,118 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-25 21:30:52,119 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-25 21:30:52,119 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-25 21:30:52,120 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:30:52" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-25 21:30:52,229 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-25 21:30:52,230 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-25 21:30:52,230 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-25 21:30:52,230 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-25 21:30:52,500 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-25 21:30:52,501 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-10-25 21:30:52,503 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 09:30:52 BoogieIcfgContainer [2020-10-25 21:30:52,503 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-25 21:30:52,506 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-25 21:30:52,506 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-25 21:30:52,511 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-25 21:30:52,511 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 09:30:51" (1/3) ... [2020-10-25 21:30:52,513 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8213f64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 09:30:52, skipping insertion in model container [2020-10-25 21:30:52,513 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:30:52" (2/3) ... [2020-10-25 21:30:52,514 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8213f64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 09:30:52, skipping insertion in model container [2020-10-25 21:30:52,514 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 09:30:52" (3/3) ... [2020-10-25 21:30:52,517 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_2_8.i [2020-10-25 21:30:52,534 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-25 21:30:52,541 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-25 21:30:52,569 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-25 21:30:52,645 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-25 21:30:52,648 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-25 21:30:52,648 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-25 21:30:52,649 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-25 21:30:52,649 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-25 21:30:52,649 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-25 21:30:52,649 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-25 21:30:52,649 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-25 21:30:52,669 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2020-10-25 21:30:52,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-25 21:30:52,681 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 21:30:52,682 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 21:30:52,682 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 21:30:52,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 21:30:52,693 INFO L82 PathProgramCache]: Analyzing trace with hash -646694038, now seen corresponding path program 1 times [2020-10-25 21:30:52,705 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 21:30:52,707 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392903126] [2020-10-25 21:30:52,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 21:30:52,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 21:30:52,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 21:30:52,942 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392903126] [2020-10-25 21:30:52,943 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 21:30:52,944 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-25 21:30:52,945 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031005479] [2020-10-25 21:30:52,951 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-25 21:30:52,952 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 21:30:52,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-25 21:30:52,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-25 21:30:52,976 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 2 states. [2020-10-25 21:30:53,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 21:30:53,001 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2020-10-25 21:30:53,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-25 21:30:53,003 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-10-25 21:30:53,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 21:30:53,013 INFO L225 Difference]: With dead ends: 29 [2020-10-25 21:30:53,014 INFO L226 Difference]: Without dead ends: 12 [2020-10-25 21:30:53,019 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-25 21:30:53,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-10-25 21:30:53,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-10-25 21:30:53,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-10-25 21:30:53,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 11 transitions. [2020-10-25 21:30:53,082 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 11 transitions. Word has length 11 [2020-10-25 21:30:53,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 21:30:53,083 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 11 transitions. [2020-10-25 21:30:53,083 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-25 21:30:53,084 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 11 transitions. [2020-10-25 21:30:53,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-25 21:30:53,085 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 21:30:53,086 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 21:30:53,086 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-25 21:30:53,086 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 21:30:53,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 21:30:53,091 INFO L82 PathProgramCache]: Analyzing trace with hash 33364332, now seen corresponding path program 1 times [2020-10-25 21:30:53,092 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 21:30:53,093 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922559528] [2020-10-25 21:30:53,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 21:30:53,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-25 21:30:53,149 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-25 21:30:53,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-25 21:30:53,195 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-25 21:30:53,234 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-25 21:30:53,234 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-25 21:30:53,236 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-25 21:30:53,278 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 09:30:53 BoogieIcfgContainer [2020-10-25 21:30:53,278 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-25 21:30:53,280 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-25 21:30:53,280 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-25 21:30:53,280 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-25 21:30:53,281 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 09:30:52" (3/4) ... [2020-10-25 21:30:53,285 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-25 21:30:53,285 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-25 21:30:53,288 INFO L168 Benchmark]: Toolchain (without parser) took 1569.78 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 25.2 MB in the beginning and 37.4 MB in the end (delta: -12.2 MB). Peak memory consumption was 1.2 MB. Max. memory is 16.1 GB. [2020-10-25 21:30:53,289 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 39.8 MB. Free memory was 17.8 MB in the beginning and 17.7 MB in the end (delta: 28.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 21:30:53,290 INFO L168 Benchmark]: CACSL2BoogieTranslator took 315.43 ms. Allocated memory is still 48.2 MB. Free memory was 24.5 MB in the beginning and 25.8 MB in the end (delta: -1.3 MB). Peak memory consumption was 3.4 MB. Max. memory is 16.1 GB. [2020-10-25 21:30:53,291 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.33 ms. Allocated memory is still 48.2 MB. Free memory was 25.7 MB in the beginning and 24.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-10-25 21:30:53,292 INFO L168 Benchmark]: Boogie Preprocessor took 28.06 ms. Allocated memory is still 48.2 MB. Free memory was 24.2 MB in the beginning and 23.1 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 21:30:53,293 INFO L168 Benchmark]: RCFGBuilder took 385.29 ms. Allocated memory is still 48.2 MB. Free memory was 23.1 MB in the beginning and 23.3 MB in the end (delta: -270.4 kB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. [2020-10-25 21:30:53,294 INFO L168 Benchmark]: TraceAbstraction took 772.96 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 22.8 MB in the beginning and 37.7 MB in the end (delta: -14.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 21:30:53,295 INFO L168 Benchmark]: Witness Printer took 6.12 ms. Allocated memory is still 58.7 MB. Free memory was 37.7 MB in the beginning and 37.4 MB in the end (delta: 322.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 21:30:53,300 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 39.8 MB. Free memory was 17.8 MB in the beginning and 17.7 MB in the end (delta: 28.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 315.43 ms. Allocated memory is still 48.2 MB. Free memory was 24.5 MB in the beginning and 25.8 MB in the end (delta: -1.3 MB). Peak memory consumption was 3.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 47.33 ms. Allocated memory is still 48.2 MB. Free memory was 25.7 MB in the beginning and 24.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 28.06 ms. Allocated memory is still 48.2 MB. Free memory was 24.2 MB in the beginning and 23.1 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 385.29 ms. Allocated memory is still 48.2 MB. Free memory was 23.1 MB in the beginning and 23.3 MB in the end (delta: -270.4 kB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 772.96 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 22.8 MB in the beginning and 37.7 MB in the end (delta: -14.9 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 6.12 ms. Allocated memory is still 58.7 MB. Free memory was 37.7 MB in the beginning and 37.4 MB in the end (delta: 322.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 12]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() 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) [L12] COND FALSE !(0) [L12] __assert_fail ("0", "newton_2_8.c", 3, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 15 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 100 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 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-5485861 [2020-10-25 21:30:56,027 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-25 21:30:56,030 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-25 21:30:56,066 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-25 21:30:56,067 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-25 21:30:56,068 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-25 21:30:56,070 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-25 21:30:56,073 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-25 21:30:56,075 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-25 21:30:56,076 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-25 21:30:56,078 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-25 21:30:56,079 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-25 21:30:56,080 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-25 21:30:56,081 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-25 21:30:56,083 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-25 21:30:56,084 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-25 21:30:56,085 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-25 21:30:56,087 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-25 21:30:56,089 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-25 21:30:56,091 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-25 21:30:56,093 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-25 21:30:56,095 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-25 21:30:56,097 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-25 21:30:56,098 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-25 21:30:56,101 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-25 21:30:56,102 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-25 21:30:56,103 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-25 21:30:56,104 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-25 21:30:56,105 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-25 21:30:56,106 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-25 21:30:56,106 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-25 21:30:56,108 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-25 21:30:56,109 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-25 21:30:56,110 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-25 21:30:56,111 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-25 21:30:56,112 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-25 21:30:56,113 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-25 21:30:56,113 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-25 21:30:56,113 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-25 21:30:56,115 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-25 21:30:56,123 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-25 21:30:56,125 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-10-25 21:30:56,161 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-25 21:30:56,162 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-25 21:30:56,164 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-25 21:30:56,164 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-25 21:30:56,164 INFO L138 SettingsManager]: * Use SBE=true [2020-10-25 21:30:56,165 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-25 21:30:56,165 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-25 21:30:56,165 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-25 21:30:56,166 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-25 21:30:56,166 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-25 21:30:56,166 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-25 21:30:56,166 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-25 21:30:56,167 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-25 21:30:56,167 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-25 21:30:56,167 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-25 21:30:56,168 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-25 21:30:56,168 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-25 21:30:56,168 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-25 21:30:56,168 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-25 21:30:56,169 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-25 21:30:56,169 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-25 21:30:56,169 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-25 21:30:56,169 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-25 21:30:56,170 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-25 21:30:56,170 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-25 21:30:56,170 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-25 21:30:56,171 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-25 21:30:56,171 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-25 21:30:56,171 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-25 21:30:56,171 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-25 21:30:56,172 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-25 21:30:56,172 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 80de2bcb413ca82cf36ee5cabb22cc23421a986b [2020-10-25 21:30:56,612 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-25 21:30:56,639 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-25 21:30:56,643 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-25 21:30:56,644 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-25 21:30:56,645 INFO L275 PluginConnector]: CDTParser initialized [2020-10-25 21:30:56,646 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cdfpl/newton_2_8.i [2020-10-25 21:30:56,737 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/65190a359/1f5fc9bafcec4e8da9f3e80a984d8d95/FLAGe9247eb6f [2020-10-25 21:30:57,382 INFO L306 CDTParser]: Found 1 translation units. [2020-10-25 21:30:57,382 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_2_8.i [2020-10-25 21:30:57,391 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/65190a359/1f5fc9bafcec4e8da9f3e80a984d8d95/FLAGe9247eb6f [2020-10-25 21:30:57,770 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/65190a359/1f5fc9bafcec4e8da9f3e80a984d8d95 [2020-10-25 21:30:57,778 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-25 21:30:57,790 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-25 21:30:57,795 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-25 21:30:57,795 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-25 21:30:57,817 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-25 21:30:57,818 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 09:30:57" (1/1) ... [2020-10-25 21:30:57,825 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44e80bf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:30:57, skipping insertion in model container [2020-10-25 21:30:57,826 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 09:30:57" (1/1) ... [2020-10-25 21:30:57,837 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-25 21:30:57,878 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-25 21:30:58,133 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 21:30:58,150 INFO L203 MainTranslator]: Completed pre-run [2020-10-25 21:30:58,182 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 21:30:58,207 INFO L208 MainTranslator]: Completed translation [2020-10-25 21:30:58,207 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:30:58 WrapperNode [2020-10-25 21:30:58,208 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-25 21:30:58,209 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-25 21:30:58,210 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-25 21:30:58,210 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-25 21:30:58,219 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:30:58" (1/1) ... [2020-10-25 21:30:58,232 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:30:58" (1/1) ... [2020-10-25 21:30:58,258 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-25 21:30:58,260 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-25 21:30:58,260 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-25 21:30:58,260 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-25 21:30:58,279 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:30:58" (1/1) ... [2020-10-25 21:30:58,279 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:30:58" (1/1) ... [2020-10-25 21:30:58,284 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:30:58" (1/1) ... [2020-10-25 21:30:58,284 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:30:58" (1/1) ... [2020-10-25 21:30:58,294 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:30:58" (1/1) ... [2020-10-25 21:30:58,297 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:30:58" (1/1) ... [2020-10-25 21:30:58,300 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:30:58" (1/1) ... [2020-10-25 21:30:58,304 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-25 21:30:58,306 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-25 21:30:58,306 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-25 21:30:58,306 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-25 21:30:58,307 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:30:58" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-25 21:30:58,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-25 21:30:58,414 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-25 21:30:58,415 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-25 21:30:58,415 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-25 21:31:11,738 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-25 21:31:11,739 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-10-25 21:31:11,741 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 09:31:11 BoogieIcfgContainer [2020-10-25 21:31:11,743 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-25 21:31:11,747 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-25 21:31:11,748 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-25 21:31:11,751 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-25 21:31:11,752 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 09:30:57" (1/3) ... [2020-10-25 21:31:11,753 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d855c77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 09:31:11, skipping insertion in model container [2020-10-25 21:31:11,753 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:30:58" (2/3) ... [2020-10-25 21:31:11,754 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d855c77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 09:31:11, skipping insertion in model container [2020-10-25 21:31:11,755 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 09:31:11" (3/3) ... [2020-10-25 21:31:11,758 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_2_8.i [2020-10-25 21:31:11,771 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-25 21:31:11,777 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-25 21:31:11,791 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-25 21:31:11,836 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-25 21:31:11,837 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-25 21:31:11,837 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-25 21:31:11,838 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-25 21:31:11,839 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-25 21:31:11,839 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-25 21:31:11,839 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-25 21:31:11,839 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-25 21:31:11,852 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2020-10-25 21:31:11,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-25 21:31:11,858 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 21:31:11,859 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 21:31:11,859 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 21:31:11,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 21:31:11,865 INFO L82 PathProgramCache]: Analyzing trace with hash -646694038, now seen corresponding path program 1 times [2020-10-25 21:31:11,879 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-25 21:31:11,880 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [770454459] [2020-10-25 21:31:11,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-10-25 21:31:14,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 21:31:14,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 1 conjunts are in the unsatisfiable core [2020-10-25 21:31:14,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 21:31:14,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 21:31:14,700 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-25 21:31:14,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 21:31:14,708 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [770454459] [2020-10-25 21:31:14,709 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-25 21:31:14,709 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-25 21:31:14,710 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808748227] [2020-10-25 21:31:14,716 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-25 21:31:14,716 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-25 21:31:14,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-25 21:31:14,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-25 21:31:14,742 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 2 states. [2020-10-25 21:31:14,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 21:31:14,760 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2020-10-25 21:31:14,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-25 21:31:14,762 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-10-25 21:31:14,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 21:31:14,772 INFO L225 Difference]: With dead ends: 29 [2020-10-25 21:31:14,772 INFO L226 Difference]: Without dead ends: 12 [2020-10-25 21:31:14,776 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-25 21:31:14,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-10-25 21:31:14,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-10-25 21:31:14,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-10-25 21:31:14,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 11 transitions. [2020-10-25 21:31:14,813 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 11 transitions. Word has length 11 [2020-10-25 21:31:14,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 21:31:14,814 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 11 transitions. [2020-10-25 21:31:14,814 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-25 21:31:14,814 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 11 transitions. [2020-10-25 21:31:14,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-25 21:31:14,815 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 21:31:14,815 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 21:31:15,029 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-25 21:31:15,030 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 21:31:15,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 21:31:15,032 INFO L82 PathProgramCache]: Analyzing trace with hash 33364332, now seen corresponding path program 1 times [2020-10-25 21:31:15,033 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-25 21:31:15,034 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1592409560] [2020-10-25 21:31:15,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-10-25 21:31:36,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-25 21:31:36,553 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-25 21:31:47,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-25 21:31:47,142 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-25 21:31:47,402 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-10-25 21:31:47,403 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-25 21:31:47,605 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-25 21:31:47,637 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 09:31:47 BoogieIcfgContainer [2020-10-25 21:31:47,638 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-25 21:31:47,639 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-25 21:31:47,639 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-25 21:31:47,639 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-25 21:31:47,640 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 09:31:11" (3/4) ... [2020-10-25 21:31:47,642 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-25 21:31:47,714 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-25 21:31:47,715 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-25 21:31:47,718 INFO L168 Benchmark]: Toolchain (without parser) took 49936.11 ms. Allocated memory was 41.9 MB in the beginning and 52.4 MB in the end (delta: 10.5 MB). Free memory was 19.9 MB in the beginning and 19.1 MB in the end (delta: 821.2 kB). Peak memory consumption was 14.1 MB. Max. memory is 16.1 GB. [2020-10-25 21:31:47,722 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 41.9 MB. Free memory was 22.8 MB in the beginning and 22.7 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 21:31:47,724 INFO L168 Benchmark]: CACSL2BoogieTranslator took 413.71 ms. Allocated memory is still 41.9 MB. Free memory was 19.2 MB in the beginning and 17.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 3.2 MB. Max. memory is 16.1 GB. [2020-10-25 21:31:47,727 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.52 ms. Allocated memory is still 41.9 MB. Free memory was 17.9 MB in the beginning and 16.3 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 21:31:47,728 INFO L168 Benchmark]: Boogie Preprocessor took 45.05 ms. Allocated memory was 41.9 MB in the beginning and 52.4 MB in the end (delta: 10.5 MB). Free memory was 16.3 MB in the beginning and 37.0 MB in the end (delta: -20.7 MB). Peak memory consumption was 5.2 MB. Max. memory is 16.1 GB. [2020-10-25 21:31:47,729 INFO L168 Benchmark]: RCFGBuilder took 13437.19 ms. Allocated memory is still 52.4 MB. Free memory was 37.0 MB in the beginning and 36.3 MB in the end (delta: 642.4 kB). Peak memory consumption was 13.5 MB. Max. memory is 16.1 GB. [2020-10-25 21:31:47,730 INFO L168 Benchmark]: TraceAbstraction took 35890.69 ms. Allocated memory is still 52.4 MB. Free memory was 35.8 MB in the beginning and 21.2 MB in the end (delta: 14.7 MB). Peak memory consumption was 15.3 MB. Max. memory is 16.1 GB. [2020-10-25 21:31:47,732 INFO L168 Benchmark]: Witness Printer took 76.09 ms. Allocated memory is still 52.4 MB. Free memory was 21.2 MB in the beginning and 19.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 21:31:47,743 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 41.9 MB. Free memory was 22.8 MB in the beginning and 22.7 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 413.71 ms. Allocated memory is still 41.9 MB. Free memory was 19.2 MB in the beginning and 17.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 3.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 49.52 ms. Allocated memory is still 41.9 MB. Free memory was 17.9 MB in the beginning and 16.3 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 45.05 ms. Allocated memory was 41.9 MB in the beginning and 52.4 MB in the end (delta: 10.5 MB). Free memory was 16.3 MB in the beginning and 37.0 MB in the end (delta: -20.7 MB). Peak memory consumption was 5.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 13437.19 ms. Allocated memory is still 52.4 MB. Free memory was 37.0 MB in the beginning and 36.3 MB in the end (delta: 642.4 kB). Peak memory consumption was 13.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 35890.69 ms. Allocated memory is still 52.4 MB. Free memory was 35.8 MB in the beginning and 21.2 MB in the end (delta: 14.7 MB). Peak memory consumption was 15.3 MB. Max. memory is 16.1 GB. * Witness Printer took 76.09 ms. Allocated memory is still 52.4 MB. Free memory was 21.2 MB in the beginning and 19.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 12]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_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) [L12] COND FALSE !(0) [L12] __assert_fail ("0", "newton_2_8.c", 3, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 35.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 15 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 20 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 24.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 200 SizeOfPredicates, 0 NumberOfNonLiveVariables, 41 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! [MP z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process Received shutdown request...