./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/floats-cdfpl/newton_1_7.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2880296f 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 ../../../trunk/examples/svcomp/floats-cdfpl/newton_1_7.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 46f9db3b7991e6681e893353a1157ad7f5bf9fdc ............................................................................................................................................................................................................................................................................. 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 ../../../trunk/examples/svcomp/floats-cdfpl/newton_1_7.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 46f9db3b7991e6681e893353a1157ad7f5bf9fdc .......................................................................................................................................................................................................................................................................................................................................... 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 0.2.0-2880296 [2020-12-02 13:39:44,260 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-02 13:39:44,265 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-02 13:39:44,330 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-02 13:39:44,330 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-02 13:39:44,338 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-02 13:39:44,341 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-02 13:39:44,347 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-02 13:39:44,351 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-02 13:39:44,357 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-02 13:39:44,359 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-02 13:39:44,365 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-02 13:39:44,365 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-02 13:39:44,368 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-02 13:39:44,371 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-02 13:39:44,373 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-02 13:39:44,375 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-02 13:39:44,379 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-02 13:39:44,383 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-02 13:39:44,391 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-02 13:39:44,395 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-02 13:39:44,398 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-02 13:39:44,400 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-02 13:39:44,401 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-02 13:39:44,406 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-02 13:39:44,407 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-02 13:39:44,407 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-02 13:39:44,410 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-02 13:39:44,410 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-02 13:39:44,411 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-02 13:39:44,412 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-02 13:39:44,413 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-02 13:39:44,415 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-02 13:39:44,416 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-02 13:39:44,418 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-02 13:39:44,418 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-02 13:39:44,419 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-02 13:39:44,420 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-02 13:39:44,420 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-02 13:39:44,421 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-02 13:39:44,422 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-02 13:39:44,423 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-02 13:39:44,450 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-02 13:39:44,450 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-02 13:39:44,451 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-02 13:39:44,452 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-02 13:39:44,452 INFO L138 SettingsManager]: * Use SBE=true [2020-12-02 13:39:44,452 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-02 13:39:44,453 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-02 13:39:44,453 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-02 13:39:44,453 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-02 13:39:44,453 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-02 13:39:44,454 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-02 13:39:44,454 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-02 13:39:44,454 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-02 13:39:44,454 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-02 13:39:44,455 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-02 13:39:44,455 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-02 13:39:44,455 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-02 13:39:44,455 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-02 13:39:44,456 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-02 13:39:44,456 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-02 13:39:44,456 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-02 13:39:44,456 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-02 13:39:44,457 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-02 13:39:44,457 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-02 13:39:44,457 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-02 13:39:44,458 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-02 13:39:44,458 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-02 13:39:44,458 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-02 13:39:44,458 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-02 13:39:44,459 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 46f9db3b7991e6681e893353a1157ad7f5bf9fdc [2020-12-02 13:39:44,864 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-02 13:39:44,917 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-02 13:39:44,921 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-02 13:39:44,922 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-02 13:39:44,925 INFO L275 PluginConnector]: CDTParser initialized [2020-12-02 13:39:44,930 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/floats-cdfpl/newton_1_7.i [2020-12-02 13:39:45,012 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ddb19ac58/c5a4bda2c08f4b6d852707fca3a5a03e/FLAGfc386ab66 [2020-12-02 13:39:45,705 INFO L306 CDTParser]: Found 1 translation units. [2020-12-02 13:39:45,706 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/floats-cdfpl/newton_1_7.i [2020-12-02 13:39:45,719 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ddb19ac58/c5a4bda2c08f4b6d852707fca3a5a03e/FLAGfc386ab66 [2020-12-02 13:39:46,064 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ddb19ac58/c5a4bda2c08f4b6d852707fca3a5a03e [2020-12-02 13:39:46,067 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-02 13:39:46,069 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-02 13:39:46,075 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-02 13:39:46,075 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-02 13:39:46,080 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-02 13:39:46,081 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:39:46" (1/1) ... [2020-12-02 13:39:46,086 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fb2bdee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:39:46, skipping insertion in model container [2020-12-02 13:39:46,086 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:39:46" (1/1) ... [2020-12-02 13:39:46,095 INFO L146 MainTranslator]: Starting translation in SV-COMP mode [2020-12-02 13:39:46,118 INFO L179 MainTranslator]: Built tables and reachable declarations [2020-12-02 13:39:46,365 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cdfpl/newton_1_7.i[1224,1237] [2020-12-02 13:39:46,369 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-12-02 13:39:46,383 INFO L212 MainTranslator]: Completed pre-run [2020-12-02 13:39:46,406 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cdfpl/newton_1_7.i[1224,1237] [2020-12-02 13:39:46,407 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-12-02 13:39:46,424 INFO L217 MainTranslator]: Completed translation [2020-12-02 13:39:46,424 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:39:46 WrapperNode [2020-12-02 13:39:46,425 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-02 13:39:46,426 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-02 13:39:46,426 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-02 13:39:46,426 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-02 13:39:46,435 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:39:46" (1/1) ... [2020-12-02 13:39:46,446 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:39:46" (1/1) ... [2020-12-02 13:39:46,474 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-02 13:39:46,476 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-02 13:39:46,476 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-02 13:39:46,477 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-02 13:39:46,485 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:39:46" (1/1) ... [2020-12-02 13:39:46,486 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:39:46" (1/1) ... [2020-12-02 13:39:46,487 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:39:46" (1/1) ... [2020-12-02 13:39:46,487 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:39:46" (1/1) ... [2020-12-02 13:39:46,492 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:39:46" (1/1) ... [2020-12-02 13:39:46,506 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:39:46" (1/1) ... [2020-12-02 13:39:46,508 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:39:46" (1/1) ... [2020-12-02 13:39:46,510 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-02 13:39:46,511 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-02 13:39:46,512 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-02 13:39:46,512 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-02 13:39:46,513 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:39:46" (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 [2020-12-02 13:39:46,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-02 13:39:46,616 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-02 13:39:46,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-02 13:39:46,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-02 13:39:46,927 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-02 13:39:46,927 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-12-02 13:39:46,930 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:39:46 BoogieIcfgContainer [2020-12-02 13:39:46,930 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-02 13:39:46,932 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-02 13:39:46,932 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-02 13:39:46,936 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-02 13:39:46,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 01:39:46" (1/3) ... [2020-12-02 13:39:46,938 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a23bbbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:39:46, skipping insertion in model container [2020-12-02 13:39:46,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:39:46" (2/3) ... [2020-12-02 13:39:46,938 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a23bbbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:39:46, skipping insertion in model container [2020-12-02 13:39:46,939 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:39:46" (3/3) ... [2020-12-02 13:39:46,940 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_1_7.i [2020-12-02 13:39:46,957 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-02 13:39:46,961 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-02 13:39:46,976 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-02 13:39:47,007 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-02 13:39:47,008 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-02 13:39:47,008 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-02 13:39:47,008 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-02 13:39:47,008 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-02 13:39:47,009 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-02 13:39:47,009 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-02 13:39:47,009 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-02 13:39:47,024 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2020-12-02 13:39:47,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-02 13:39:47,030 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 13:39:47,031 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 13:39:47,031 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 13:39:47,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 13:39:47,039 INFO L82 PathProgramCache]: Analyzing trace with hash 119351050, now seen corresponding path program 1 times [2020-12-02 13:39:47,051 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 13:39:47,052 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970481444] [2020-12-02 13:39:47,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 13:39:47,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 13:39:47,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 13:39:47,267 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970481444] [2020-12-02 13:39:47,268 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 13:39:47,268 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-02 13:39:47,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511560805] [2020-12-02 13:39:47,275 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-02 13:39:47,276 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 13:39:47,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-02 13:39:47,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-02 13:39:47,301 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 2 states. [2020-12-02 13:39:47,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 13:39:47,320 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2020-12-02 13:39:47,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-02 13:39:47,322 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-12-02 13:39:47,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 13:39:47,335 INFO L225 Difference]: With dead ends: 23 [2020-12-02 13:39:47,336 INFO L226 Difference]: Without dead ends: 9 [2020-12-02 13:39:47,341 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 [2020-12-02 13:39:47,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2020-12-02 13:39:47,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2020-12-02 13:39:47,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-12-02 13:39:47,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 8 transitions. [2020-12-02 13:39:47,393 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 8 transitions. Word has length 8 [2020-12-02 13:39:47,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 13:39:47,395 INFO L481 AbstractCegarLoop]: Abstraction has 9 states and 8 transitions. [2020-12-02 13:39:47,395 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-02 13:39:47,395 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2020-12-02 13:39:47,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-02 13:39:47,396 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 13:39:47,397 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 13:39:47,397 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-02 13:39:47,397 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 13:39:47,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 13:39:47,401 INFO L82 PathProgramCache]: Analyzing trace with hash 176609352, now seen corresponding path program 1 times [2020-12-02 13:39:47,401 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 13:39:47,403 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141379780] [2020-12-02 13:39:47,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 13:39:47,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-02 13:39:47,454 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-02 13:39:47,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-02 13:39:47,470 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-02 13:39:47,493 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-02 13:39:47,494 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-02 13:39:47,495 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-02 13:39:47,522 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 01:39:47 BoogieIcfgContainer [2020-12-02 13:39:47,523 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-02 13:39:47,524 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-02 13:39:47,524 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-02 13:39:47,524 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-02 13:39:47,525 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:39:46" (3/4) ... [2020-12-02 13:39:47,529 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-02 13:39:47,529 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-02 13:39:47,532 INFO L168 Benchmark]: Toolchain (without parser) took 1461.55 ms. Allocated memory is still 56.6 MB. Free memory was 33.9 MB in the beginning and 34.1 MB in the end (delta: -198.8 kB). Peak memory consumption was 1.5 MB. Max. memory is 16.1 GB. [2020-12-02 13:39:47,533 INFO L168 Benchmark]: CDTParser took 0.42 ms. Allocated memory is still 44.0 MB. Free memory was 23.8 MB in the beginning and 23.7 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 13:39:47,534 INFO L168 Benchmark]: CACSL2BoogieTranslator took 350.63 ms. Allocated memory is still 56.6 MB. Free memory was 33.7 MB in the beginning and 36.9 MB in the end (delta: -3.2 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. [2020-12-02 13:39:47,535 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.28 ms. Allocated memory is still 56.6 MB. Free memory was 36.7 MB in the beginning and 35.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 13:39:47,536 INFO L168 Benchmark]: Boogie Preprocessor took 34.39 ms. Allocated memory is still 56.6 MB. Free memory was 35.2 MB in the beginning and 34.2 MB in the end (delta: 993.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 13:39:47,536 INFO L168 Benchmark]: RCFGBuilder took 419.13 ms. Allocated memory is still 56.6 MB. Free memory was 34.2 MB in the beginning and 38.6 MB in the end (delta: -4.4 MB). Peak memory consumption was 14.2 MB. Max. memory is 16.1 GB. [2020-12-02 13:39:47,537 INFO L168 Benchmark]: TraceAbstraction took 590.88 ms. Allocated memory is still 56.6 MB. Free memory was 38.0 MB in the beginning and 34.6 MB in the end (delta: 3.4 MB). Peak memory consumption was 2.8 MB. Max. memory is 16.1 GB. [2020-12-02 13:39:47,538 INFO L168 Benchmark]: Witness Printer took 5.54 ms. Allocated memory is still 56.6 MB. Free memory was 34.4 MB in the beginning and 34.1 MB in the end (delta: 266.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 13:39:47,543 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.42 ms. Allocated memory is still 44.0 MB. Free memory was 23.8 MB in the beginning and 23.7 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 350.63 ms. Allocated memory is still 56.6 MB. Free memory was 33.7 MB in the beginning and 36.9 MB in the end (delta: -3.2 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 48.28 ms. Allocated memory is still 56.6 MB. Free memory was 36.7 MB in the beginning and 35.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 34.39 ms. Allocated memory is still 56.6 MB. Free memory was 35.2 MB in the beginning and 34.2 MB in the end (delta: 993.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 419.13 ms. Allocated memory is still 56.6 MB. Free memory was 34.2 MB in the beginning and 38.6 MB in the end (delta: -4.4 MB). Peak memory consumption was 14.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 590.88 ms. Allocated memory is still 56.6 MB. Free memory was 38.0 MB in the beginning and 34.6 MB in the end (delta: 3.4 MB). Peak memory consumption was 2.8 MB. Max. memory is 16.1 GB. * Witness Printer took 5.54 ms. Allocated memory is still 56.6 MB. Free memory was 34.4 MB in the beginning and 34.1 MB in the end (delta: 266.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 42]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is 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) [L42] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 12 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=13occurred 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, 16 NumberOfCodeBlocks, 16 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 49 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 0.2.0-2880296 [2020-12-02 13:39:50,114 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-02 13:39:50,118 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-02 13:39:50,178 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-02 13:39:50,179 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-02 13:39:50,185 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-02 13:39:50,189 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-02 13:39:50,197 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-02 13:39:50,205 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-02 13:39:50,209 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-02 13:39:50,211 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-02 13:39:50,212 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-02 13:39:50,213 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-02 13:39:50,221 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-02 13:39:50,223 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-02 13:39:50,225 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-02 13:39:50,227 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-02 13:39:50,232 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-02 13:39:50,234 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-02 13:39:50,240 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-02 13:39:50,244 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-02 13:39:50,246 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-02 13:39:50,249 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-02 13:39:50,250 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-02 13:39:50,256 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-02 13:39:50,257 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-02 13:39:50,257 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-02 13:39:50,259 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-02 13:39:50,260 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-02 13:39:50,261 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-02 13:39:50,262 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-02 13:39:50,263 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-02 13:39:50,265 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-02 13:39:50,266 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-02 13:39:50,267 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-02 13:39:50,267 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-02 13:39:50,268 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-02 13:39:50,269 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-02 13:39:50,269 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-02 13:39:50,271 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-02 13:39:50,272 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-02 13:39:50,273 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-12-02 13:39:50,321 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-02 13:39:50,322 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-02 13:39:50,326 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-02 13:39:50,326 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-02 13:39:50,326 INFO L138 SettingsManager]: * Use SBE=true [2020-12-02 13:39:50,327 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-02 13:39:50,327 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-02 13:39:50,327 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-02 13:39:50,328 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-02 13:39:50,328 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-02 13:39:50,329 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-02 13:39:50,329 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-02 13:39:50,330 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-02 13:39:50,330 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-02 13:39:50,330 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-02 13:39:50,330 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-02 13:39:50,331 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-02 13:39:50,331 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-02 13:39:50,331 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-02 13:39:50,331 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-02 13:39:50,332 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-02 13:39:50,332 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-02 13:39:50,332 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-02 13:39:50,332 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-02 13:39:50,333 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-02 13:39:50,333 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-02 13:39:50,333 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-12-02 13:39:50,333 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-12-02 13:39:50,334 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-02 13:39:50,334 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-02 13:39:50,334 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-02 13:39:50,334 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 46f9db3b7991e6681e893353a1157ad7f5bf9fdc [2020-12-02 13:39:50,734 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-02 13:39:50,779 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-02 13:39:50,783 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-02 13:39:50,785 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-02 13:39:50,786 INFO L275 PluginConnector]: CDTParser initialized [2020-12-02 13:39:50,787 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/floats-cdfpl/newton_1_7.i [2020-12-02 13:39:50,882 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3fc0f0131/3bff7e507fc045a2b3098c936db40af0/FLAG2f235841c [2020-12-02 13:39:51,453 INFO L306 CDTParser]: Found 1 translation units. [2020-12-02 13:39:51,454 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/floats-cdfpl/newton_1_7.i [2020-12-02 13:39:51,463 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3fc0f0131/3bff7e507fc045a2b3098c936db40af0/FLAG2f235841c [2020-12-02 13:39:51,822 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3fc0f0131/3bff7e507fc045a2b3098c936db40af0 [2020-12-02 13:39:51,831 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-02 13:39:51,834 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-02 13:39:51,837 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-02 13:39:51,837 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-02 13:39:51,842 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-02 13:39:51,843 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:39:51" (1/1) ... [2020-12-02 13:39:51,848 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a03bb37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:39:51, skipping insertion in model container [2020-12-02 13:39:51,848 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:39:51" (1/1) ... [2020-12-02 13:39:51,857 INFO L146 MainTranslator]: Starting translation in SV-COMP mode [2020-12-02 13:39:51,878 INFO L179 MainTranslator]: Built tables and reachable declarations [2020-12-02 13:39:52,191 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cdfpl/newton_1_7.i[1224,1237] [2020-12-02 13:39:52,195 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-12-02 13:39:52,212 INFO L212 MainTranslator]: Completed pre-run [2020-12-02 13:39:52,243 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cdfpl/newton_1_7.i[1224,1237] [2020-12-02 13:39:52,244 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-12-02 13:39:52,265 INFO L217 MainTranslator]: Completed translation [2020-12-02 13:39:52,266 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:39:52 WrapperNode [2020-12-02 13:39:52,266 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-02 13:39:52,268 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-02 13:39:52,268 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-02 13:39:52,268 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-02 13:39:52,278 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:39:52" (1/1) ... [2020-12-02 13:39:52,292 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:39:52" (1/1) ... [2020-12-02 13:39:52,346 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-02 13:39:52,347 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-02 13:39:52,347 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-02 13:39:52,347 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-02 13:39:52,361 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:39:52" (1/1) ... [2020-12-02 13:39:52,361 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:39:52" (1/1) ... [2020-12-02 13:39:52,375 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:39:52" (1/1) ... [2020-12-02 13:39:52,380 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:39:52" (1/1) ... [2020-12-02 13:39:52,400 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:39:52" (1/1) ... [2020-12-02 13:39:52,403 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:39:52" (1/1) ... [2020-12-02 13:39:52,409 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:39:52" (1/1) ... [2020-12-02 13:39:52,420 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-02 13:39:52,421 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-02 13:39:52,422 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-02 13:39:52,423 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-02 13:39:52,424 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:39:52" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-02 13:39:52,539 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.float_to_bitvec_DOUBLE [2020-12-02 13:39:52,540 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-12-02 13:39:52,540 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-02 13:39:52,540 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-02 13:39:52,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-02 13:39:52,541 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.float_to_bitvec_FLOAT [2020-12-02 13:39:59,657 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-02 13:39:59,658 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-12-02 13:39:59,660 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:39:59 BoogieIcfgContainer [2020-12-02 13:39:59,660 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-02 13:39:59,662 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-02 13:39:59,662 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-02 13:39:59,666 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-02 13:39:59,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 01:39:51" (1/3) ... [2020-12-02 13:39:59,668 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2040d393 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:39:59, skipping insertion in model container [2020-12-02 13:39:59,668 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:39:52" (2/3) ... [2020-12-02 13:39:59,668 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2040d393 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:39:59, skipping insertion in model container [2020-12-02 13:39:59,669 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:39:59" (3/3) ... [2020-12-02 13:39:59,672 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_1_7.i [2020-12-02 13:39:59,694 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-02 13:39:59,698 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-02 13:39:59,713 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-02 13:39:59,757 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-02 13:39:59,758 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-02 13:39:59,758 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-02 13:39:59,758 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-02 13:39:59,760 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-02 13:39:59,760 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-02 13:39:59,760 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-02 13:39:59,760 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-02 13:39:59,776 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2020-12-02 13:39:59,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-02 13:39:59,782 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 13:39:59,783 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 13:39:59,784 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 13:39:59,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 13:39:59,790 INFO L82 PathProgramCache]: Analyzing trace with hash -1236295026, now seen corresponding path program 1 times [2020-12-02 13:39:59,805 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-02 13:39:59,806 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1614371876] [2020-12-02 13:39:59,806 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 [2020-12-02 13:40:02,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 13:40:02,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 1 conjunts are in the unsatisfiable core [2020-12-02 13:40:02,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 13:40:02,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 13:40:02,182 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-02 13:40:02,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 13:40:02,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1614371876] [2020-12-02 13:40:02,216 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-02 13:40:02,217 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-12-02 13:40:02,218 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449792028] [2020-12-02 13:40:02,223 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-02 13:40:02,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-02 13:40:02,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-02 13:40:02,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-02 13:40:02,240 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 2 states. [2020-12-02 13:40:02,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 13:40:02,266 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2020-12-02 13:40:02,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-02 13:40:02,268 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-12-02 13:40:02,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 13:40:02,277 INFO L225 Difference]: With dead ends: 25 [2020-12-02 13:40:02,277 INFO L226 Difference]: Without dead ends: 11 [2020-12-02 13:40:02,280 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-02 13:40:02,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-12-02 13:40:02,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-12-02 13:40:02,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-12-02 13:40:02,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2020-12-02 13:40:02,318 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 10 [2020-12-02 13:40:02,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 13:40:02,319 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2020-12-02 13:40:02,319 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-02 13:40:02,319 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2020-12-02 13:40:02,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-02 13:40:02,320 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 13:40:02,320 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 13:40:02,535 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-02 13:40:02,536 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 13:40:02,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 13:40:02,538 INFO L82 PathProgramCache]: Analyzing trace with hash -1179036724, now seen corresponding path program 1 times [2020-12-02 13:40:02,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-02 13:40:02,540 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1465714685] [2020-12-02 13:40:02,540 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 [2020-12-02 13:42:11,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-02 13:42:11,552 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-02 13:42:32,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-02 13:42:32,830 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-02 13:42:33,096 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-12-02 13:42:33,096 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-02 13:42:33,298 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-02 13:42:33,339 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 01:42:33 BoogieIcfgContainer [2020-12-02 13:42:33,340 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-02 13:42:33,341 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-02 13:42:33,341 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-02 13:42:33,341 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-02 13:42:33,342 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:39:59" (3/4) ... [2020-12-02 13:42:33,345 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-02 13:42:33,394 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-12-02 13:42:33,394 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-02 13:42:33,397 INFO L168 Benchmark]: Toolchain (without parser) took 161562.44 ms. Allocated memory was 52.4 MB in the beginning and 62.9 MB in the end (delta: 10.5 MB). Free memory was 29.3 MB in the beginning and 38.5 MB in the end (delta: -9.1 MB). Peak memory consumption was 3.0 MB. Max. memory is 16.1 GB. [2020-12-02 13:42:33,398 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 41.9 MB. Free memory was 19.7 MB in the beginning and 19.6 MB in the end (delta: 69.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 13:42:33,399 INFO L168 Benchmark]: CACSL2BoogieTranslator took 429.94 ms. Allocated memory is still 52.4 MB. Free memory was 29.1 MB in the beginning and 28.2 MB in the end (delta: 949.5 kB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. [2020-12-02 13:42:33,400 INFO L168 Benchmark]: Boogie Procedure Inliner took 78.55 ms. Allocated memory is still 52.4 MB. Free memory was 28.2 MB in the beginning and 26.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 13:42:33,401 INFO L168 Benchmark]: Boogie Preprocessor took 73.66 ms. Allocated memory is still 52.4 MB. Free memory was 26.0 MB in the beginning and 24.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 13:42:33,402 INFO L168 Benchmark]: RCFGBuilder took 7238.71 ms. Allocated memory is still 52.4 MB. Free memory was 24.3 MB in the beginning and 24.6 MB in the end (delta: -306.8 kB). Peak memory consumption was 6.6 MB. Max. memory is 16.1 GB. [2020-12-02 13:42:33,402 INFO L168 Benchmark]: TraceAbstraction took 153677.99 ms. Allocated memory was 52.4 MB in the beginning and 62.9 MB in the end (delta: 10.5 MB). Free memory was 24.3 MB in the beginning and 40.3 MB in the end (delta: -15.9 MB). Peak memory consumption was 11.3 MB. Max. memory is 16.1 GB. [2020-12-02 13:42:33,403 INFO L168 Benchmark]: Witness Printer took 53.93 ms. Allocated memory is still 62.9 MB. Free memory was 40.3 MB in the beginning and 38.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 13:42:33,408 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 41.9 MB. Free memory was 19.7 MB in the beginning and 19.6 MB in the end (delta: 69.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 429.94 ms. Allocated memory is still 52.4 MB. Free memory was 29.1 MB in the beginning and 28.2 MB in the end (delta: 949.5 kB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 78.55 ms. Allocated memory is still 52.4 MB. Free memory was 28.2 MB in the beginning and 26.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 73.66 ms. Allocated memory is still 52.4 MB. Free memory was 26.0 MB in the beginning and 24.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 7238.71 ms. Allocated memory is still 52.4 MB. Free memory was 24.3 MB in the beginning and 24.6 MB in the end (delta: -306.8 kB). Peak memory consumption was 6.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 153677.99 ms. Allocated memory was 52.4 MB in the beginning and 62.9 MB in the end (delta: 10.5 MB). Free memory was 24.3 MB in the beginning and 40.3 MB in the end (delta: -15.9 MB). Peak memory consumption was 11.3 MB. Max. memory is 16.1 GB. * Witness Printer took 53.93 ms. Allocated memory is still 62.9 MB. Free memory was 40.3 MB in the beginning and 38.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 42]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L30] float IN = __VERIFIER_nondet_float(); [L31] EXPR 1.4f [L31] EXPR -1.4f [L31] IN > -1.4f && IN < 1.4f [L31] EXPR 1.4f [L31] IN > -1.4f && IN < 1.4f [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) [L42] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 153.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 15 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred 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, 131.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 162 SizeOfPredicates, 0 NumberOfNonLiveVariables, 77 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...