./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/floats-cdfpl/newton_1_4.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ee8e70e7 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/floats-cdfpl/newton_1_4.i -s /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-2/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 90741c14eee92622488e9390ec37eb8bb78b90b3 ............................................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/floats-cdfpl/newton_1_4.i -s /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-2/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 90741c14eee92622488e9390ec37eb8bb78b90b3 ......................................................................................................................................................................................................................................................................................................................................... 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-ee8e70e [2020-10-24 13:46:08,340 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 13:46:08,343 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 13:46:08,384 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-24 13:46:08,385 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-24 13:46:08,387 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-24 13:46:08,389 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-24 13:46:08,392 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-24 13:46:08,395 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-24 13:46:08,396 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-24 13:46:08,398 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-24 13:46:08,400 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-24 13:46:08,400 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 13:46:08,402 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 13:46:08,403 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 13:46:08,405 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 13:46:08,407 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 13:46:08,408 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 13:46:08,411 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 13:46:08,414 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 13:46:08,417 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 13:46:08,419 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 13:46:08,421 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 13:46:08,422 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 13:46:08,428 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-24 13:46:08,432 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-24 13:46:08,433 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-24 13:46:08,434 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-24 13:46:08,436 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-24 13:46:08,439 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-24 13:46:08,442 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-24 13:46:08,444 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-24 13:46:08,447 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-24 13:46:08,448 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-24 13:46:08,452 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-24 13:46:08,465 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-24 13:46:08,467 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-24 13:46:08,467 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-24 13:46:08,468 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 13:46:08,469 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 13:46:08,470 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 13:46:08,472 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-24 13:46:08,529 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 13:46:08,530 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 13:46:08,532 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-24 13:46:08,533 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-24 13:46:08,533 INFO L138 SettingsManager]: * Use SBE=true [2020-10-24 13:46:08,534 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 13:46:08,534 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 13:46:08,534 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-24 13:46:08,535 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 13:46:08,535 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 13:46:08,536 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 13:46:08,537 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 13:46:08,537 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 13:46:08,537 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 13:46:08,537 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 13:46:08,538 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 13:46:08,538 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 13:46:08,538 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 13:46:08,538 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-24 13:46:08,539 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 13:46:08,539 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 13:46:08,539 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 13:46:08,540 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 13:46:08,540 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-24 13:46:08,540 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-24 13:46:08,540 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-24 13:46:08,541 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-24 13:46:08,541 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 13:46:08,541 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-24 13:46:08,541 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-2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 90741c14eee92622488e9390ec37eb8bb78b90b3 [2020-10-24 13:46:09,006 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 13:46:09,039 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 13:46:09,042 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 13:46:09,044 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 13:46:09,045 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 13:46:09,047 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cdfpl/newton_1_4.i [2020-10-24 13:46:09,129 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/26a15f313/2fda86087ff24aac9f516f54a36db947/FLAGc48761953 [2020-10-24 13:46:09,831 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 13:46:09,832 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_1_4.i [2020-10-24 13:46:09,844 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/26a15f313/2fda86087ff24aac9f516f54a36db947/FLAGc48761953 [2020-10-24 13:46:10,197 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/26a15f313/2fda86087ff24aac9f516f54a36db947 [2020-10-24 13:46:10,200 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 13:46:10,207 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-24 13:46:10,209 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 13:46:10,210 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 13:46:10,215 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 13:46:10,216 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:46:10" (1/1) ... [2020-10-24 13:46:10,220 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cea9da4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:46:10, skipping insertion in model container [2020-10-24 13:46:10,220 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:46:10" (1/1) ... [2020-10-24 13:46:10,230 INFO L146 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 13:46:10,251 INFO L179 MainTranslator]: Built tables and reachable declarations [2020-10-24 13:46:10,462 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-10-24 13:46:10,471 INFO L212 MainTranslator]: Completed pre-run [2020-10-24 13:46:10,493 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-10-24 13:46:10,511 INFO L217 MainTranslator]: Completed translation [2020-10-24 13:46:10,511 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:46:10 WrapperNode [2020-10-24 13:46:10,512 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 13:46:10,513 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-24 13:46:10,513 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-24 13:46:10,514 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-24 13:46:10,523 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:46:10" (1/1) ... [2020-10-24 13:46:10,531 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:46:10" (1/1) ... [2020-10-24 13:46:10,552 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-24 13:46:10,555 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 13:46:10,556 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 13:46:10,556 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 13:46:10,566 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:46:10" (1/1) ... [2020-10-24 13:46:10,566 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:46:10" (1/1) ... [2020-10-24 13:46:10,578 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:46:10" (1/1) ... [2020-10-24 13:46:10,578 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:46:10" (1/1) ... [2020-10-24 13:46:10,586 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:46:10" (1/1) ... [2020-10-24 13:46:10,589 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:46:10" (1/1) ... [2020-10-24 13:46:10,590 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:46:10" (1/1) ... [2020-10-24 13:46:10,592 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 13:46:10,594 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 13:46:10,594 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 13:46:10,594 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 13:46:10,595 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:46:10" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-24 13:46:10,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-24 13:46:10,678 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 13:46:10,678 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 13:46:10,678 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 13:46:10,893 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 13:46:10,894 INFO L298 CfgBuilder]: Removed 12 assume(true) statements. [2020-10-24 13:46:10,896 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:46:10 BoogieIcfgContainer [2020-10-24 13:46:10,897 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 13:46:10,900 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 13:46:10,900 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 13:46:10,906 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 13:46:10,906 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 01:46:10" (1/3) ... [2020-10-24 13:46:10,908 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c9e70d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:46:10, skipping insertion in model container [2020-10-24 13:46:10,908 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:46:10" (2/3) ... [2020-10-24 13:46:10,909 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c9e70d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:46:10, skipping insertion in model container [2020-10-24 13:46:10,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:46:10" (3/3) ... [2020-10-24 13:46:10,912 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_1_4.i [2020-10-24 13:46:10,928 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-24 13:46:10,935 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 13:46:10,955 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 13:46:10,992 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 13:46:10,992 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 13:46:10,993 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-24 13:46:10,993 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 13:46:10,993 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 13:46:10,994 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 13:46:10,994 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 13:46:10,994 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 13:46:11,013 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2020-10-24 13:46:11,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-24 13:46:11,020 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 13:46:11,021 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 13:46:11,022 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 13:46:11,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 13:46:11,030 INFO L82 PathProgramCache]: Analyzing trace with hash -595084600, now seen corresponding path program 1 times [2020-10-24 13:46:11,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 13:46:11,042 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727047775] [2020-10-24 13:46:11,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 13:46:11,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 13:46:11,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 13:46:11,222 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727047775] [2020-10-24 13:46:11,223 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 13:46:11,224 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-24 13:46:11,225 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141394907] [2020-10-24 13:46:11,230 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-24 13:46:11,231 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-24 13:46:11,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-24 13:46:11,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-24 13:46:11,250 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 2 states. [2020-10-24 13:46:11,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 13:46:11,270 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2020-10-24 13:46:11,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-24 13:46:11,272 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2020-10-24 13:46:11,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 13:46:11,283 INFO L225 Difference]: With dead ends: 25 [2020-10-24 13:46:11,283 INFO L226 Difference]: Without dead ends: 10 [2020-10-24 13:46:11,286 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 [2020-10-24 13:46:11,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-10-24 13:46:11,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2020-10-24 13:46:11,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-10-24 13:46:11,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 9 transitions. [2020-10-24 13:46:11,343 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 9 transitions. Word has length 9 [2020-10-24 13:46:11,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 13:46:11,344 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 9 transitions. [2020-10-24 13:46:11,344 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-24 13:46:11,345 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 9 transitions. [2020-10-24 13:46:11,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-24 13:46:11,346 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 13:46:11,346 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 13:46:11,347 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-24 13:46:11,347 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 13:46:11,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 13:46:11,353 INFO L82 PathProgramCache]: Analyzing trace with hash 1179922762, now seen corresponding path program 1 times [2020-10-24 13:46:11,354 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 13:46:11,355 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481412486] [2020-10-24 13:46:11,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 13:46:11,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 13:46:11,411 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 13:46:11,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 13:46:11,455 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 13:46:11,497 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-24 13:46:11,497 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-24 13:46:11,499 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-24 13:46:11,526 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 01:46:11 BoogieIcfgContainer [2020-10-24 13:46:11,527 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 13:46:11,527 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-24 13:46:11,528 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-24 13:46:11,528 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-24 13:46:11,529 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:46:10" (3/4) ... [2020-10-24 13:46:11,533 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-24 13:46:11,534 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-24 13:46:11,537 INFO L168 Benchmark]: Toolchain (without parser) took 1333.18 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 26.3 MB in the beginning and 29.4 MB in the end (delta: -3.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 16.1 GB. [2020-10-24 13:46:11,538 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 48.2 MB. Free memory was 30.6 MB in the beginning and 30.6 MB in the end (delta: 32.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 13:46:11,539 INFO L168 Benchmark]: CACSL2BoogieTranslator took 302.67 ms. Allocated memory is still 48.2 MB. Free memory was 25.7 MB in the beginning and 26.8 MB in the end (delta: -1.0 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. [2020-10-24 13:46:11,540 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.88 ms. Allocated memory is still 48.2 MB. Free memory was 26.8 MB in the beginning and 25.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 13:46:11,541 INFO L168 Benchmark]: Boogie Preprocessor took 38.16 ms. Allocated memory is still 48.2 MB. Free memory was 25.2 MB in the beginning and 24.3 MB in the end (delta: 991.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 13:46:11,542 INFO L168 Benchmark]: RCFGBuilder took 303.70 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 24.3 MB in the beginning and 35.5 MB in the end (delta: -11.2 MB). Peak memory consumption was 7.4 MB. Max. memory is 16.1 GB. [2020-10-24 13:46:11,543 INFO L168 Benchmark]: TraceAbstraction took 627.16 ms. Allocated memory is still 58.7 MB. Free memory was 35.1 MB in the beginning and 29.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 4.9 MB. Max. memory is 16.1 GB. [2020-10-24 13:46:11,544 INFO L168 Benchmark]: Witness Printer took 6.63 ms. Allocated memory is still 58.7 MB. Free memory was 29.6 MB in the beginning and 29.4 MB in the end (delta: 273.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 13:46:11,549 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 48.2 MB. Free memory was 30.6 MB in the beginning and 30.6 MB in the end (delta: 32.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 302.67 ms. Allocated memory is still 48.2 MB. Free memory was 25.7 MB in the beginning and 26.8 MB in the end (delta: -1.0 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 38.88 ms. Allocated memory is still 48.2 MB. Free memory was 26.8 MB in the beginning and 25.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 38.16 ms. Allocated memory is still 48.2 MB. Free memory was 25.2 MB in the beginning and 24.3 MB in the end (delta: 991.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 303.70 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 24.3 MB in the beginning and 35.5 MB in the end (delta: -11.2 MB). Peak memory consumption was 7.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 627.16 ms. Allocated memory is still 58.7 MB. Free memory was 35.1 MB in the beginning and 29.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 4.9 MB. Max. memory is 16.1 GB. * Witness Printer took 6.63 ms. Allocated memory is still 58.7 MB. Free memory was 29.6 MB in the beginning and 29.4 MB in the end (delta: 273.8 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 someBinaryArithmeticFLOAT_SMToperation at line 33, overapproximation of someBinaryDOUBLE_SMTComparisonOperation at line 41, overapproximation of someBinaryFLOAT_SMTComparisonOperation at line 31. 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_4.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: 0.5s, 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-ee8e70e [2020-10-24 13:46:14,111 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 13:46:14,114 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 13:46:14,158 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-24 13:46:14,159 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-24 13:46:14,161 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-24 13:46:14,163 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-24 13:46:14,166 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-24 13:46:14,168 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-24 13:46:14,170 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-24 13:46:14,171 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-24 13:46:14,173 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-24 13:46:14,174 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 13:46:14,175 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 13:46:14,177 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 13:46:14,179 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 13:46:14,180 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 13:46:14,181 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 13:46:14,184 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 13:46:14,186 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 13:46:14,188 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 13:46:14,190 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 13:46:14,192 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 13:46:14,193 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 13:46:14,203 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-24 13:46:14,204 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-24 13:46:14,205 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-24 13:46:14,209 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-24 13:46:14,210 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-24 13:46:14,214 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-24 13:46:14,215 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-24 13:46:14,218 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-24 13:46:14,219 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-24 13:46:14,223 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-24 13:46:14,224 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-24 13:46:14,225 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-24 13:46:14,227 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-24 13:46:14,228 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-24 13:46:14,228 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 13:46:14,230 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 13:46:14,231 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 13:46:14,233 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-10-24 13:46:14,298 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 13:46:14,299 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 13:46:14,300 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-24 13:46:14,301 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-24 13:46:14,301 INFO L138 SettingsManager]: * Use SBE=true [2020-10-24 13:46:14,301 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 13:46:14,302 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 13:46:14,302 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 13:46:14,302 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 13:46:14,302 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 13:46:14,303 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 13:46:14,303 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 13:46:14,303 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-24 13:46:14,303 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-24 13:46:14,304 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 13:46:14,304 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 13:46:14,304 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 13:46:14,304 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 13:46:14,305 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 13:46:14,305 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-24 13:46:14,305 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 13:46:14,306 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 13:46:14,306 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 13:46:14,306 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 13:46:14,306 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-24 13:46:14,307 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-24 13:46:14,307 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-24 13:46:14,307 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-24 13:46:14,307 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 13:46:14,308 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-24 13:46:14,308 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-24 13:46:14,308 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-2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 90741c14eee92622488e9390ec37eb8bb78b90b3 [2020-10-24 13:46:14,708 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 13:46:14,744 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 13:46:14,750 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 13:46:14,752 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 13:46:14,753 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 13:46:14,754 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cdfpl/newton_1_4.i [2020-10-24 13:46:14,843 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/38d8bee49/87ed1a61a3494a0c829fa192c4d30746/FLAGd5bc6c154 [2020-10-24 13:46:15,451 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 13:46:15,452 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_1_4.i [2020-10-24 13:46:15,461 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/38d8bee49/87ed1a61a3494a0c829fa192c4d30746/FLAGd5bc6c154 [2020-10-24 13:46:15,823 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/38d8bee49/87ed1a61a3494a0c829fa192c4d30746 [2020-10-24 13:46:15,826 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 13:46:15,846 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-24 13:46:15,849 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 13:46:15,849 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 13:46:15,853 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 13:46:15,854 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:46:15" (1/1) ... [2020-10-24 13:46:15,859 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2abb00aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:46:15, skipping insertion in model container [2020-10-24 13:46:15,860 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:46:15" (1/1) ... [2020-10-24 13:46:15,869 INFO L146 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 13:46:15,892 INFO L179 MainTranslator]: Built tables and reachable declarations [2020-10-24 13:46:16,083 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-10-24 13:46:16,099 INFO L212 MainTranslator]: Completed pre-run [2020-10-24 13:46:16,129 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-10-24 13:46:16,148 INFO L217 MainTranslator]: Completed translation [2020-10-24 13:46:16,149 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:46:16 WrapperNode [2020-10-24 13:46:16,149 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 13:46:16,151 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-24 13:46:16,151 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-24 13:46:16,151 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-24 13:46:16,164 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:46:16" (1/1) ... [2020-10-24 13:46:16,178 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:46:16" (1/1) ... [2020-10-24 13:46:16,218 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-24 13:46:16,219 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 13:46:16,220 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 13:46:16,220 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 13:46:16,232 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:46:16" (1/1) ... [2020-10-24 13:46:16,233 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:46:16" (1/1) ... [2020-10-24 13:46:16,238 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:46:16" (1/1) ... [2020-10-24 13:46:16,238 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:46:16" (1/1) ... [2020-10-24 13:46:16,249 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:46:16" (1/1) ... [2020-10-24 13:46:16,252 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:46:16" (1/1) ... [2020-10-24 13:46:16,255 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:46:16" (1/1) ... [2020-10-24 13:46:16,260 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 13:46:16,261 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 13:46:16,262 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 13:46:16,262 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 13:46:16,263 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:46:16" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-24 13:46:16,343 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.float_to_bitvec_DOUBLE [2020-10-24 13:46:16,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-24 13:46:16,344 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 13:46:16,344 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 13:46:16,344 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 13:46:16,344 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.float_to_bitvec_FLOAT [2020-10-24 13:46:21,700 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 13:46:21,700 INFO L298 CfgBuilder]: Removed 12 assume(true) statements. [2020-10-24 13:46:21,702 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:46:21 BoogieIcfgContainer [2020-10-24 13:46:21,703 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 13:46:21,705 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 13:46:21,705 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 13:46:21,709 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 13:46:21,710 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 01:46:15" (1/3) ... [2020-10-24 13:46:21,711 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75b31a4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:46:21, skipping insertion in model container [2020-10-24 13:46:21,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:46:16" (2/3) ... [2020-10-24 13:46:21,712 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75b31a4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:46:21, skipping insertion in model container [2020-10-24 13:46:21,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:46:21" (3/3) ... [2020-10-24 13:46:21,714 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_1_4.i [2020-10-24 13:46:21,727 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-24 13:46:21,734 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 13:46:21,749 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 13:46:21,778 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 13:46:21,779 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 13:46:21,779 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-24 13:46:21,779 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 13:46:21,779 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 13:46:21,780 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 13:46:21,780 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 13:46:21,780 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 13:46:21,795 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2020-10-24 13:46:21,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-24 13:46:21,802 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 13:46:21,803 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 13:46:21,804 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 13:46:21,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 13:46:21,812 INFO L82 PathProgramCache]: Analyzing trace with hash 329560011, now seen corresponding path program 1 times [2020-10-24 13:46:21,827 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 13:46:21,828 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [76177443] [2020-10-24 13:46:21,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-24 13:46:24,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 13:46:24,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 1 conjunts are in the unsatisfiable core [2020-10-24 13:46:24,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 13:46:24,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 13:46:24,508 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 13:46:24,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 13:46:24,514 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [76177443] [2020-10-24 13:46:24,515 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 13:46:24,515 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-24 13:46:24,516 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864146302] [2020-10-24 13:46:24,522 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-24 13:46:24,522 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 13:46:24,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-24 13:46:24,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-24 13:46:24,541 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 2 states. [2020-10-24 13:46:24,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 13:46:24,568 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2020-10-24 13:46:24,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-24 13:46:24,570 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-10-24 13:46:24,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 13:46:24,603 INFO L225 Difference]: With dead ends: 27 [2020-10-24 13:46:24,603 INFO L226 Difference]: Without dead ends: 12 [2020-10-24 13:46:24,606 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 [2020-10-24 13:46:24,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-10-24 13:46:24,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-10-24 13:46:24,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-10-24 13:46:24,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2020-10-24 13:46:24,650 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 11 [2020-10-24 13:46:24,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 13:46:24,651 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2020-10-24 13:46:24,651 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-24 13:46:24,652 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2020-10-24 13:46:24,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-24 13:46:24,653 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 13:46:24,653 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 13:46:24,869 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-24 13:46:24,869 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 13:46:24,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 13:46:24,871 INFO L82 PathProgramCache]: Analyzing trace with hash 2104567373, now seen corresponding path program 1 times [2020-10-24 13:46:24,872 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 13:46:24,873 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1484260685] [2020-10-24 13:46:24,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-24 13:47:06,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 13:47:06,397 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 13:53:02,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 13:53:02,906 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 13:53:03,312 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-10-24 13:53:03,312 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-24 13:53:03,514 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-24 13:53:03,555 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 01:53:03 BoogieIcfgContainer [2020-10-24 13:53:03,555 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 13:53:03,556 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-24 13:53:03,556 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-24 13:53:03,556 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-24 13:53:03,557 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:46:21" (3/4) ... [2020-10-24 13:53:03,559 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-24 13:53:03,604 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-24 13:53:03,605 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-24 13:53:03,608 INFO L168 Benchmark]: Toolchain (without parser) took 407776.31 ms. Allocated memory was 41.9 MB in the beginning and 50.3 MB in the end (delta: 8.4 MB). Free memory was 17.6 MB in the beginning and 20.3 MB in the end (delta: -2.7 MB). Peak memory consumption was 9.0 MB. Max. memory is 16.1 GB. [2020-10-24 13:53:03,609 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 41.9 MB. Free memory was 27.1 MB in the beginning and 27.1 MB in the end (delta: 28.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 13:53:03,610 INFO L168 Benchmark]: CACSL2BoogieTranslator took 301.22 ms. Allocated memory is still 50.3 MB. Free memory was 34.2 MB in the beginning and 22.2 MB in the end (delta: 12.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-10-24 13:53:03,611 INFO L168 Benchmark]: Boogie Procedure Inliner took 68.12 ms. Allocated memory is still 50.3 MB. Free memory was 22.2 MB in the beginning and 31.9 MB in the end (delta: -9.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 16.1 GB. [2020-10-24 13:53:03,612 INFO L168 Benchmark]: Boogie Preprocessor took 41.09 ms. Allocated memory is still 50.3 MB. Free memory was 31.9 MB in the beginning and 30.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 13:53:03,613 INFO L168 Benchmark]: RCFGBuilder took 5441.41 ms. Allocated memory is still 50.3 MB. Free memory was 30.2 MB in the beginning and 27.4 MB in the end (delta: 2.8 MB). Peak memory consumption was 12.1 MB. Max. memory is 16.1 GB. [2020-10-24 13:53:03,614 INFO L168 Benchmark]: TraceAbstraction took 401850.59 ms. Allocated memory is still 50.3 MB. Free memory was 26.9 MB in the beginning and 22.4 MB in the end (delta: 4.6 MB). Peak memory consumption was 5.1 MB. Max. memory is 16.1 GB. [2020-10-24 13:53:03,615 INFO L168 Benchmark]: Witness Printer took 49.22 ms. Allocated memory is still 50.3 MB. Free memory was 22.1 MB in the beginning and 20.3 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 13:53:03,620 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 27.1 MB in the beginning and 27.1 MB in the end (delta: 28.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 301.22 ms. Allocated memory is still 50.3 MB. Free memory was 34.2 MB in the beginning and 22.2 MB in the end (delta: 12.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 68.12 ms. Allocated memory is still 50.3 MB. Free memory was 22.2 MB in the beginning and 31.9 MB in the end (delta: -9.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 41.09 ms. Allocated memory is still 50.3 MB. Free memory was 31.9 MB in the beginning and 30.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 5441.41 ms. Allocated memory is still 50.3 MB. Free memory was 30.2 MB in the beginning and 27.4 MB in the end (delta: 2.8 MB). Peak memory consumption was 12.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 401850.59 ms. Allocated memory is still 50.3 MB. Free memory was 26.9 MB in the beginning and 22.4 MB in the end (delta: 4.6 MB). Peak memory consumption was 5.1 MB. Max. memory is 16.1 GB. * Witness Printer took 49.22 ms. Allocated memory is still 50.3 MB. Free memory was 22.1 MB in the beginning and 20.3 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(); [L31] EXPR 0.8f [L31] EXPR -0.8f [L31] IN > -0.8f && IN < 0.8f [L31] EXPR 0.8f [L31] IN > -0.8f && IN < 0.8f [L15] COND FALSE !(!cond) [L20] EXPR x*x [L20] EXPR x*x*x [L20] EXPR 6.0f [L20] EXPR (x*x*x)/6.0f [L20] EXPR x - (x*x*x)/6.0f [L20] EXPR x*x [L20] EXPR x*x*x [L20] EXPR x*x*x*x [L20] EXPR x*x*x*x*x [L20] EXPR 120.0f [L20] EXPR (x*x*x*x*x)/120.0f [L20] EXPR x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f [L20] EXPR x*x [L20] EXPR x*x*x [L20] EXPR x*x*x*x [L20] EXPR x*x*x*x*x [L20] EXPR x*x*x*x*x*x [L20] EXPR x*x*x*x*x*x*x [L20] EXPR 5040.0f [L20] EXPR (x*x*x*x*x*x*x)/5040.0f [L20] EXPR x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f [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] EXPR x*x [L25] EXPR 2.0f [L25] EXPR (x*x)/2.0f [L25] EXPR 1 - (x*x)/2.0f [L25] EXPR x*x [L25] EXPR x*x*x [L25] EXPR x*x*x*x [L25] EXPR 24.0f [L25] EXPR (x*x*x*x)/24.0f [L25] EXPR 1 - (x*x)/2.0f + (x*x*x*x)/24.0f [L25] EXPR x*x [L25] EXPR x*x*x [L25] EXPR x*x*x*x [L25] EXPR x*x*x*x*x [L25] EXPR x*x*x*x*x*x [L25] EXPR 720.0f [L25] EXPR (x*x*x*x*x*x)/720.0f [L25] EXPR 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f [L25] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L33] EXPR f(IN)/fp(IN) [L33] EXPR IN - f(IN)/fp(IN) [L33] float x = IN - f(IN)/fp(IN); [L41] EXPR 0.1 [L41] COND TRUE !(x < 0.1) [L12] COND FALSE !(0) [L12] __assert_fail ("0", "newton_1_4.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: 401.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 16 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, 43.8s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 200 SizeOfPredicates, 0 NumberOfNonLiveVariables, 78 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...