./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/floats-cdfpl/newton_1_8.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 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_1_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 9a455407b4fd80f1691ee95c228274faaa3c38f0 ............................................................................................................................................................................................................................................................................ 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_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 9a455407b4fd80f1691ee95c228274faaa3c38f0 ........................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-5485861 [2020-10-25 21:30:08,057 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-25 21:30:08,062 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-25 21:30:08,126 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-25 21:30:08,127 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-25 21:30:08,134 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-25 21:30:08,138 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-25 21:30:08,146 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-25 21:30:08,150 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-25 21:30:08,157 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-25 21:30:08,159 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-25 21:30:08,164 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-25 21:30:08,165 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-25 21:30:08,169 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-25 21:30:08,171 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-25 21:30:08,173 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-25 21:30:08,175 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-25 21:30:08,178 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-25 21:30:08,182 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-25 21:30:08,191 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-25 21:30:08,193 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-25 21:30:08,195 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-25 21:30:08,197 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-25 21:30:08,199 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-25 21:30:08,208 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-25 21:30:08,209 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-25 21:30:08,209 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-25 21:30:08,212 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-25 21:30:08,213 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-25 21:30:08,214 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-25 21:30:08,214 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-25 21:30:08,215 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-25 21:30:08,218 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-25 21:30:08,219 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-25 21:30:08,220 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-25 21:30:08,221 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-25 21:30:08,222 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-25 21:30:08,222 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-25 21:30:08,222 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-25 21:30:08,225 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-25 21:30:08,226 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-25 21:30:08,227 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-25 21:30:08,287 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-25 21:30:08,288 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-25 21:30:08,296 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-25 21:30:08,296 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-25 21:30:08,297 INFO L138 SettingsManager]: * Use SBE=true [2020-10-25 21:30:08,297 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-25 21:30:08,297 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-25 21:30:08,298 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-25 21:30:08,298 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-25 21:30:08,299 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-25 21:30:08,300 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-25 21:30:08,300 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-25 21:30:08,301 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-25 21:30:08,301 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-25 21:30:08,301 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-25 21:30:08,301 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-25 21:30:08,302 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-25 21:30:08,302 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-25 21:30:08,302 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-25 21:30:08,302 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-25 21:30:08,303 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-25 21:30:08,303 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-25 21:30:08,304 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-25 21:30:08,304 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-25 21:30:08,304 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-25 21:30:08,304 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-25 21:30:08,305 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-25 21:30:08,305 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-25 21:30:08,305 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-25 21:30:08,305 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9a455407b4fd80f1691ee95c228274faaa3c38f0 [2020-10-25 21:30:08,742 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-25 21:30:08,805 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-25 21:30:08,809 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-25 21:30:08,811 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-25 21:30:08,812 INFO L275 PluginConnector]: CDTParser initialized [2020-10-25 21:30:08,814 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cdfpl/newton_1_8.i [2020-10-25 21:30:08,893 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b47079c15/90e0b63f15b7419182c7d93805b81925/FLAGa2b8c3003 [2020-10-25 21:30:09,505 INFO L306 CDTParser]: Found 1 translation units. [2020-10-25 21:30:09,506 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_1_8.i [2020-10-25 21:30:09,515 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b47079c15/90e0b63f15b7419182c7d93805b81925/FLAGa2b8c3003 [2020-10-25 21:30:09,878 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b47079c15/90e0b63f15b7419182c7d93805b81925 [2020-10-25 21:30:09,881 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-25 21:30:09,889 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-25 21:30:09,891 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-25 21:30:09,891 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-25 21:30:09,895 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-25 21:30:09,896 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 09:30:09" (1/1) ... [2020-10-25 21:30:09,925 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41fb4e7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:30:09, skipping insertion in model container [2020-10-25 21:30:09,927 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 09:30:09" (1/1) ... [2020-10-25 21:30:09,956 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-25 21:30:09,985 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-25 21:30:10,200 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 21:30:10,221 INFO L203 MainTranslator]: Completed pre-run [2020-10-25 21:30:10,244 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 21:30:10,262 INFO L208 MainTranslator]: Completed translation [2020-10-25 21:30:10,263 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:30:10 WrapperNode [2020-10-25 21:30:10,263 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-25 21:30:10,265 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-25 21:30:10,265 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-25 21:30:10,265 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-25 21:30:10,275 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:30:10" (1/1) ... [2020-10-25 21:30:10,284 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:30:10" (1/1) ... [2020-10-25 21:30:10,313 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-25 21:30:10,315 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-25 21:30:10,315 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-25 21:30:10,315 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-25 21:30:10,324 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:30:10" (1/1) ... [2020-10-25 21:30:10,324 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:30:10" (1/1) ... [2020-10-25 21:30:10,326 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:30:10" (1/1) ... [2020-10-25 21:30:10,327 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:30:10" (1/1) ... [2020-10-25 21:30:10,333 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:30:10" (1/1) ... [2020-10-25 21:30:10,335 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:30:10" (1/1) ... [2020-10-25 21:30:10,337 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:30:10" (1/1) ... [2020-10-25 21:30:10,340 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-25 21:30:10,341 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-25 21:30:10,341 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-25 21:30:10,341 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-25 21:30:10,343 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:30:10" (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 21:30:10,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-25 21:30:10,426 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-25 21:30:10,426 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-25 21:30:10,427 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-25 21:30:10,924 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-25 21:30:10,925 INFO L298 CfgBuilder]: Removed 12 assume(true) statements. [2020-10-25 21:30:10,927 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 09:30:10 BoogieIcfgContainer [2020-10-25 21:30:10,930 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-25 21:30:10,941 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-25 21:30:10,942 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-25 21:30:10,952 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-25 21:30:10,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 09:30:09" (1/3) ... [2020-10-25 21:30:10,954 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64ffeaf3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 09:30:10, skipping insertion in model container [2020-10-25 21:30:10,957 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:30:10" (2/3) ... [2020-10-25 21:30:10,959 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64ffeaf3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 09:30:10, skipping insertion in model container [2020-10-25 21:30:10,960 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 09:30:10" (3/3) ... [2020-10-25 21:30:10,962 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_1_8.i [2020-10-25 21:30:10,981 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-25 21:30:10,987 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-25 21:30:11,004 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-25 21:30:11,036 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-25 21:30:11,036 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-25 21:30:11,036 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-25 21:30:11,037 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-25 21:30:11,037 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-25 21:30:11,037 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-25 21:30:11,037 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-25 21:30:11,038 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-25 21:30:11,056 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2020-10-25 21:30:11,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-25 21:30:11,063 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 21:30:11,064 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 21:30:11,064 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 21:30:11,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 21:30:11,073 INFO L82 PathProgramCache]: Analyzing trace with hash -595084600, now seen corresponding path program 1 times [2020-10-25 21:30:11,085 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 21:30:11,085 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767542443] [2020-10-25 21:30:11,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 21:30:11,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 21:30:11,242 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 21:30:11,244 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767542443] [2020-10-25 21:30:11,245 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 21:30:11,245 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-25 21:30:11,246 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084583155] [2020-10-25 21:30:11,252 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-25 21:30:11,252 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 21:30:11,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-25 21:30:11,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-25 21:30:11,272 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 2 states. [2020-10-25 21:30:11,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 21:30:11,291 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2020-10-25 21:30:11,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-25 21:30:11,293 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2020-10-25 21:30:11,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 21:30:11,302 INFO L225 Difference]: With dead ends: 25 [2020-10-25 21:30:11,303 INFO L226 Difference]: Without dead ends: 10 [2020-10-25 21:30:11,306 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 21:30:11,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-10-25 21:30:11,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2020-10-25 21:30:11,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-10-25 21:30:11,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 9 transitions. [2020-10-25 21:30:11,348 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 9 transitions. Word has length 9 [2020-10-25 21:30:11,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 21:30:11,348 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 9 transitions. [2020-10-25 21:30:11,349 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-25 21:30:11,349 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 9 transitions. [2020-10-25 21:30:11,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-25 21:30:11,350 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 21:30:11,350 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 21:30:11,350 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-25 21:30:11,351 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 21:30:11,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 21:30:11,352 INFO L82 PathProgramCache]: Analyzing trace with hash 1179922762, now seen corresponding path program 1 times [2020-10-25 21:30:11,353 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 21:30:11,353 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394465428] [2020-10-25 21:30:11,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 21:30:11,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-25 21:30:11,378 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-25 21:30:11,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-25 21:30:11,399 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-25 21:30:11,425 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-25 21:30:11,425 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-25 21:30:11,427 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-25 21:30:11,455 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 09:30:11 BoogieIcfgContainer [2020-10-25 21:30:11,456 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-25 21:30:11,457 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-25 21:30:11,457 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-25 21:30:11,457 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-25 21:30:11,458 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 09:30:10" (3/4) ... [2020-10-25 21:30:11,463 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-25 21:30:11,463 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-25 21:30:11,466 INFO L168 Benchmark]: Toolchain (without parser) took 1581.57 ms. Allocated memory was 41.9 MB in the beginning and 50.3 MB in the end (delta: 8.4 MB). Free memory was 18.9 MB in the beginning and 28.4 MB in the end (delta: -9.5 MB). Peak memory consumption was 1.1 MB. Max. memory is 16.1 GB. [2020-10-25 21:30:11,468 INFO L168 Benchmark]: CDTParser took 0.52 ms. Allocated memory is still 41.9 MB. Free memory was 24.7 MB in the beginning and 24.7 MB in the end (delta: 35.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 21:30:11,469 INFO L168 Benchmark]: CACSL2BoogieTranslator took 373.00 ms. Allocated memory is still 41.9 MB. Free memory was 18.2 MB in the beginning and 17.5 MB in the end (delta: 710.1 kB). Peak memory consumption was 3.3 MB. Max. memory is 16.1 GB. [2020-10-25 21:30:11,470 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.18 ms. Allocated memory was 41.9 MB in the beginning and 50.3 MB in the end (delta: 8.4 MB). Free memory was 17.5 MB in the beginning and 34.3 MB in the end (delta: -16.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 16.1 GB. [2020-10-25 21:30:11,471 INFO L168 Benchmark]: Boogie Preprocessor took 25.42 ms. Allocated memory is still 50.3 MB. Free memory was 34.3 MB in the beginning and 33.2 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 21:30:11,472 INFO L168 Benchmark]: RCFGBuilder took 589.48 ms. Allocated memory is still 50.3 MB. Free memory was 33.2 MB in the beginning and 22.7 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-10-25 21:30:11,473 INFO L168 Benchmark]: TraceAbstraction took 514.52 ms. Allocated memory is still 50.3 MB. Free memory was 33.8 MB in the beginning and 28.8 MB in the end (delta: 5.0 MB). Peak memory consumption was 4.8 MB. Max. memory is 16.1 GB. [2020-10-25 21:30:11,474 INFO L168 Benchmark]: Witness Printer took 6.74 ms. Allocated memory is still 50.3 MB. Free memory was 28.6 MB in the beginning and 28.4 MB in the end (delta: 221.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 21:30:11,479 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.52 ms. Allocated memory is still 41.9 MB. Free memory was 24.7 MB in the beginning and 24.7 MB in the end (delta: 35.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 373.00 ms. Allocated memory is still 41.9 MB. Free memory was 18.2 MB in the beginning and 17.5 MB in the end (delta: 710.1 kB). Peak memory consumption was 3.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 49.18 ms. Allocated memory was 41.9 MB in the beginning and 50.3 MB in the end (delta: 8.4 MB). Free memory was 17.5 MB in the beginning and 34.3 MB in the end (delta: -16.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 25.42 ms. Allocated memory is still 50.3 MB. Free memory was 34.3 MB in the beginning and 33.2 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 589.48 ms. Allocated memory is still 50.3 MB. Free memory was 33.2 MB in the beginning and 22.7 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 514.52 ms. Allocated memory is still 50.3 MB. Free memory was 33.8 MB in the beginning and 28.8 MB in the end (delta: 5.0 MB). Peak memory consumption was 4.8 MB. Max. memory is 16.1 GB. * Witness Printer took 6.74 ms. Allocated memory is still 50.3 MB. Free memory was 28.6 MB in the beginning and 28.4 MB in the end (delta: 221.9 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 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) [L12] COND FALSE !(0) [L12] __assert_fail ("0", "newton_1_8.c", 3, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 13 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=14occurred 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, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 64 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 21:30:14,011 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-25 21:30:14,014 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-25 21:30:14,051 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-25 21:30:14,052 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-25 21:30:14,054 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-25 21:30:14,056 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-25 21:30:14,059 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-25 21:30:14,062 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-25 21:30:14,064 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-25 21:30:14,066 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-25 21:30:14,067 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-25 21:30:14,068 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-25 21:30:14,070 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-25 21:30:14,071 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-25 21:30:14,073 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-25 21:30:14,075 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-25 21:30:14,076 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-25 21:30:14,078 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-25 21:30:14,081 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-25 21:30:14,084 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-25 21:30:14,086 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-25 21:30:14,088 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-25 21:30:14,089 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-25 21:30:14,093 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-25 21:30:14,093 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-25 21:30:14,094 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-25 21:30:14,095 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-25 21:30:14,096 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-25 21:30:14,097 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-25 21:30:14,098 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-25 21:30:14,099 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-25 21:30:14,100 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-25 21:30:14,101 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-25 21:30:14,103 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-25 21:30:14,104 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-25 21:30:14,105 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-25 21:30:14,105 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-25 21:30:14,105 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-25 21:30:14,107 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-25 21:30:14,108 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-25 21:30:14,110 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-10-25 21:30:14,140 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-25 21:30:14,140 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-25 21:30:14,142 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-25 21:30:14,143 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-25 21:30:14,143 INFO L138 SettingsManager]: * Use SBE=true [2020-10-25 21:30:14,144 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-25 21:30:14,144 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-25 21:30:14,145 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-25 21:30:14,145 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-25 21:30:14,145 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-25 21:30:14,146 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-25 21:30:14,146 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-25 21:30:14,147 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-25 21:30:14,147 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-25 21:30:14,147 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-25 21:30:14,148 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-25 21:30:14,148 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-25 21:30:14,149 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-25 21:30:14,149 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-25 21:30:14,149 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-25 21:30:14,150 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-25 21:30:14,150 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-25 21:30:14,150 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-25 21:30:14,151 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-25 21:30:14,151 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-25 21:30:14,152 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-25 21:30:14,152 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-25 21:30:14,152 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-25 21:30:14,153 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-25 21:30:14,153 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-25 21:30:14,153 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-25 21:30:14,154 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9a455407b4fd80f1691ee95c228274faaa3c38f0 [2020-10-25 21:30:14,559 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-25 21:30:14,597 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-25 21:30:14,602 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-25 21:30:14,605 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-25 21:30:14,606 INFO L275 PluginConnector]: CDTParser initialized [2020-10-25 21:30:14,607 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cdfpl/newton_1_8.i [2020-10-25 21:30:14,703 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b9f1e8e2f/7d7aab7e032e432c957cc9376befec84/FLAGdf5fdd697 [2020-10-25 21:30:15,336 INFO L306 CDTParser]: Found 1 translation units. [2020-10-25 21:30:15,337 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_1_8.i [2020-10-25 21:30:15,344 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b9f1e8e2f/7d7aab7e032e432c957cc9376befec84/FLAGdf5fdd697 [2020-10-25 21:30:15,709 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b9f1e8e2f/7d7aab7e032e432c957cc9376befec84 [2020-10-25 21:30:15,716 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-25 21:30:15,725 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-25 21:30:15,728 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-25 21:30:15,729 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-25 21:30:15,733 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-25 21:30:15,734 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 09:30:15" (1/1) ... [2020-10-25 21:30:15,739 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15680bf3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:30:15, skipping insertion in model container [2020-10-25 21:30:15,739 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 09:30:15" (1/1) ... [2020-10-25 21:30:15,748 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-25 21:30:15,774 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-25 21:30:16,080 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 21:30:16,100 INFO L203 MainTranslator]: Completed pre-run [2020-10-25 21:30:16,123 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 21:30:16,143 INFO L208 MainTranslator]: Completed translation [2020-10-25 21:30:16,144 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:30:16 WrapperNode [2020-10-25 21:30:16,145 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-25 21:30:16,146 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-25 21:30:16,146 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-25 21:30:16,147 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-25 21:30:16,156 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:30:16" (1/1) ... [2020-10-25 21:30:16,168 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:30:16" (1/1) ... [2020-10-25 21:30:16,191 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-25 21:30:16,192 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-25 21:30:16,193 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-25 21:30:16,193 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-25 21:30:16,203 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:30:16" (1/1) ... [2020-10-25 21:30:16,204 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:30:16" (1/1) ... [2020-10-25 21:30:16,207 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:30:16" (1/1) ... [2020-10-25 21:30:16,208 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:30:16" (1/1) ... [2020-10-25 21:30:16,216 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:30:16" (1/1) ... [2020-10-25 21:30:16,219 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:30:16" (1/1) ... [2020-10-25 21:30:16,221 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:30:16" (1/1) ... [2020-10-25 21:30:16,225 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-25 21:30:16,227 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-25 21:30:16,227 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-25 21:30:16,227 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-25 21:30:16,228 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:30:16" (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 21:30:16,312 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-25 21:30:16,313 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-25 21:30:16,313 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-25 21:30:16,313 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-25 21:30:23,176 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-25 21:30:23,177 INFO L298 CfgBuilder]: Removed 12 assume(true) statements. [2020-10-25 21:30:23,178 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 09:30:23 BoogieIcfgContainer [2020-10-25 21:30:23,179 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-25 21:30:23,181 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-25 21:30:23,181 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-25 21:30:23,184 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-25 21:30:23,185 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 09:30:15" (1/3) ... [2020-10-25 21:30:23,186 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b86ddbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 09:30:23, skipping insertion in model container [2020-10-25 21:30:23,186 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:30:16" (2/3) ... [2020-10-25 21:30:23,187 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b86ddbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 09:30:23, skipping insertion in model container [2020-10-25 21:30:23,187 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 09:30:23" (3/3) ... [2020-10-25 21:30:23,189 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_1_8.i [2020-10-25 21:30:23,206 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-25 21:30:23,221 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-25 21:30:23,261 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-25 21:30:23,314 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-25 21:30:23,315 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-25 21:30:23,315 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-25 21:30:23,315 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-25 21:30:23,315 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-25 21:30:23,316 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-25 21:30:23,316 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-25 21:30:23,316 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-25 21:30:23,329 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2020-10-25 21:30:23,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-25 21:30:23,334 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 21:30:23,334 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 21:30:23,335 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 21:30:23,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 21:30:23,340 INFO L82 PathProgramCache]: Analyzing trace with hash -595084600, now seen corresponding path program 1 times [2020-10-25 21:30:23,350 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-25 21:30:23,351 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1477610597] [2020-10-25 21:30:23,351 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 21:30:24,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 21:30:24,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 1 conjunts are in the unsatisfiable core [2020-10-25 21:30:24,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 21:30:24,597 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 21:30:24,598 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-25 21:30:24,602 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 21:30:24,604 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1477610597] [2020-10-25 21:30:24,604 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-25 21:30:24,605 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-25 21:30:24,606 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200891625] [2020-10-25 21:30:24,611 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-25 21:30:24,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-25 21:30:24,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-25 21:30:24,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-25 21:30:24,630 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 2 states. [2020-10-25 21:30:24,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 21:30:24,648 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2020-10-25 21:30:24,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-25 21:30:24,650 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2020-10-25 21:30:24,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 21:30:24,675 INFO L225 Difference]: With dead ends: 25 [2020-10-25 21:30:24,676 INFO L226 Difference]: Without dead ends: 10 [2020-10-25 21:30:24,679 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 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 21:30:24,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-10-25 21:30:24,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2020-10-25 21:30:24,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-10-25 21:30:24,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 9 transitions. [2020-10-25 21:30:24,724 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 9 transitions. Word has length 9 [2020-10-25 21:30:24,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 21:30:24,725 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 9 transitions. [2020-10-25 21:30:24,725 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-25 21:30:24,725 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 9 transitions. [2020-10-25 21:30:24,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-25 21:30:24,727 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 21:30:24,727 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 21:30:24,942 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-25 21:30:24,943 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 21:30:24,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 21:30:24,946 INFO L82 PathProgramCache]: Analyzing trace with hash 1179922762, now seen corresponding path program 1 times [2020-10-25 21:30:24,947 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-25 21:30:24,947 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1860340654] [2020-10-25 21:30:24,947 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 21:30:29,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-25 21:30:29,835 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-25 21:31:17,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-25 21:31:17,754 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-25 21:31:17,912 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-10-25 21:31:17,912 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-25 21:31:18,114 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-25 21:31:18,146 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 09:31:18 BoogieIcfgContainer [2020-10-25 21:31:18,146 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-25 21:31:18,147 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-25 21:31:18,147 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-25 21:31:18,147 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-25 21:31:18,148 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 09:30:23" (3/4) ... [2020-10-25 21:31:18,149 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-25 21:31:18,191 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-25 21:31:18,191 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-25 21:31:18,195 INFO L168 Benchmark]: Toolchain (without parser) took 62474.27 ms. Allocated memory was 48.2 MB in the beginning and 62.9 MB in the end (delta: 14.7 MB). Free memory was 24.8 MB in the beginning and 31.8 MB in the end (delta: -7.0 MB). Peak memory consumption was 9.9 MB. Max. memory is 16.1 GB. [2020-10-25 21:31:18,196 INFO L168 Benchmark]: CDTParser took 0.74 ms. Allocated memory is still 48.2 MB. Free memory was 28.4 MB in the beginning and 28.3 MB in the end (delta: 63.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 21:31:18,197 INFO L168 Benchmark]: CACSL2BoogieTranslator took 417.10 ms. Allocated memory was 48.2 MB in the beginning and 62.9 MB in the end (delta: 14.7 MB). Free memory was 24.2 MB in the beginning and 39.6 MB in the end (delta: -15.5 MB). Peak memory consumption was 3.3 MB. Max. memory is 16.1 GB. [2020-10-25 21:31:18,198 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.35 ms. Allocated memory is still 62.9 MB. Free memory was 39.6 MB in the beginning and 38.2 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 21:31:18,199 INFO L168 Benchmark]: Boogie Preprocessor took 33.59 ms. Allocated memory is still 62.9 MB. Free memory was 38.0 MB in the beginning and 36.7 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 21:31:18,200 INFO L168 Benchmark]: RCFGBuilder took 6952.05 ms. Allocated memory is still 62.9 MB. Free memory was 36.7 MB in the beginning and 42.4 MB in the end (delta: -5.7 MB). Peak memory consumption was 12.2 MB. Max. memory is 16.1 GB. [2020-10-25 21:31:18,201 INFO L168 Benchmark]: TraceAbstraction took 54965.65 ms. Allocated memory is still 62.9 MB. Free memory was 41.8 MB in the beginning and 33.6 MB in the end (delta: 8.2 MB). Peak memory consumption was 6.9 MB. Max. memory is 16.1 GB. [2020-10-25 21:31:18,201 INFO L168 Benchmark]: Witness Printer took 44.85 ms. Allocated memory is still 62.9 MB. Free memory was 33.6 MB in the beginning and 31.8 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 21:31:18,207 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.74 ms. Allocated memory is still 48.2 MB. Free memory was 28.4 MB in the beginning and 28.3 MB in the end (delta: 63.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 417.10 ms. Allocated memory was 48.2 MB in the beginning and 62.9 MB in the end (delta: 14.7 MB). Free memory was 24.2 MB in the beginning and 39.6 MB in the end (delta: -15.5 MB). Peak memory consumption was 3.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 45.35 ms. Allocated memory is still 62.9 MB. Free memory was 39.6 MB in the beginning and 38.2 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 33.59 ms. Allocated memory is still 62.9 MB. Free memory was 38.0 MB in the beginning and 36.7 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 6952.05 ms. Allocated memory is still 62.9 MB. Free memory was 36.7 MB in the beginning and 42.4 MB in the end (delta: -5.7 MB). Peak memory consumption was 12.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 54965.65 ms. Allocated memory is still 62.9 MB. Free memory was 41.8 MB in the beginning and 33.6 MB in the end (delta: 8.2 MB). Peak memory consumption was 6.9 MB. Max. memory is 16.1 GB. * Witness Printer took 44.85 ms. Allocated memory is still 62.9 MB. Free memory was 33.6 MB in the beginning and 31.8 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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); [L41] COND TRUE !(x < 0.1) [L12] COND FALSE !(0) [L12] __assert_fail ("0", "newton_1_8.c", 3, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 54.8s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 13 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred 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, 5.9s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 128 SizeOfPredicates, 0 NumberOfNonLiveVariables, 33 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! Received shutdown request...