./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/floats-cdfpl/newton_1_6.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_6.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c899a11b075f77e8271e38f51a1c9ce4fc2e25ab ............................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/floats-cdfpl/newton_1_6.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c899a11b075f77e8271e38f51a1c9ce4fc2e25ab .......................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-2880296 [2020-12-02 13:39:44,251 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-02 13:39:44,255 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-02 13:39:44,324 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-02 13:39:44,324 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-02 13:39:44,326 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-02 13:39:44,328 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-02 13:39:44,330 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-02 13:39:44,333 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-02 13:39:44,334 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-02 13:39:44,335 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-02 13:39:44,337 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-02 13:39:44,338 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-02 13:39:44,339 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-02 13:39:44,340 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-02 13:39:44,342 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-02 13:39:44,343 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-02 13:39:44,344 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-02 13:39:44,347 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-02 13:39:44,349 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-02 13:39:44,354 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-02 13:39:44,358 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-02 13:39:44,361 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-02 13:39:44,364 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-02 13:39:44,373 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-02 13:39:44,374 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-02 13:39:44,376 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-02 13:39:44,377 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-02 13:39:44,379 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-02 13:39:44,383 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-02 13:39:44,383 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-02 13:39:44,386 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-02 13:39:44,388 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-02 13:39:44,390 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-02 13:39:44,397 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-02 13:39:44,399 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-02 13:39:44,402 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-02 13:39:44,402 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-02 13:39:44,403 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-02 13:39:44,404 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-02 13:39:44,406 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-02 13:39:44,408 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-02 13:39:44,465 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-02 13:39:44,465 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-02 13:39:44,468 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-02 13:39:44,469 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-02 13:39:44,470 INFO L138 SettingsManager]: * Use SBE=true [2020-12-02 13:39:44,470 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-02 13:39:44,470 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-02 13:39:44,471 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-02 13:39:44,471 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-02 13:39:44,471 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-02 13:39:44,472 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-02 13:39:44,473 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-02 13:39:44,473 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-02 13:39:44,473 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-02 13:39:44,474 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-02 13:39:44,474 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-02 13:39:44,474 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-02 13:39:44,474 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-02 13:39:44,475 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-02 13:39:44,475 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-02 13:39:44,475 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-02 13:39:44,476 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-02 13:39:44,476 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-02 13:39:44,476 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-02 13:39:44,476 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-02 13:39:44,477 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-02 13:39:44,477 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-02 13:39:44,477 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-02 13:39:44,477 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-02 13:39:44,478 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c899a11b075f77e8271e38f51a1c9ce4fc2e25ab [2020-12-02 13:39:44,890 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-02 13:39:44,942 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-02 13:39:44,945 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-02 13:39:44,947 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-02 13:39:44,949 INFO L275 PluginConnector]: CDTParser initialized [2020-12-02 13:39:44,950 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/floats-cdfpl/newton_1_6.i [2020-12-02 13:39:45,043 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ecf9db42/fa03655728de4cedb30da113035f1309/FLAGe9abb0a1c [2020-12-02 13:39:45,755 INFO L306 CDTParser]: Found 1 translation units. [2020-12-02 13:39:45,758 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/floats-cdfpl/newton_1_6.i [2020-12-02 13:39:45,766 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ecf9db42/fa03655728de4cedb30da113035f1309/FLAGe9abb0a1c [2020-12-02 13:39:46,095 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ecf9db42/fa03655728de4cedb30da113035f1309 [2020-12-02 13:39:46,100 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-02 13:39:46,103 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-02 13:39:46,107 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-02 13:39:46,107 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-02 13:39:46,111 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-02 13:39:46,112 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:39:46" (1/1) ... [2020-12-02 13:39:46,118 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@720ad0c2 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 13:39:46,118 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:39:46" (1/1) ... [2020-12-02 13:39:46,127 INFO L146 MainTranslator]: Starting translation in SV-COMP mode [2020-12-02 13:39:46,149 INFO L179 MainTranslator]: Built tables and reachable declarations [2020-12-02 13:39:46,396 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_6.i[1224,1237] [2020-12-02 13:39:46,399 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-12-02 13:39:46,410 INFO L212 MainTranslator]: Completed pre-run [2020-12-02 13:39:46,442 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_6.i[1224,1237] [2020-12-02 13:39:46,443 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-12-02 13:39:46,459 INFO L217 MainTranslator]: Completed translation [2020-12-02 13:39:46,460 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:39:46 WrapperNode [2020-12-02 13:39:46,460 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-02 13:39:46,462 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-02 13:39:46,462 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-02 13:39:46,462 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-02 13:39:46,472 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 13:39:46,482 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 13:39:46,513 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-02 13:39:46,514 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-02 13:39:46,514 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-02 13:39:46,515 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-02 13:39:46,525 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 13:39:46,526 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 13:39:46,527 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 13:39:46,528 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 13:39:46,533 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 13:39:46,536 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 13:39:46,537 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 13:39:46,539 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-02 13:39:46,541 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-02 13:39:46,541 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-02 13:39:46,541 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-02 13:39:46,542 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 13:39:46,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-02 13:39:46,667 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-02 13:39:46,668 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-02 13:39:46,668 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-02 13:39:46,939 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-02 13:39:46,942 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-12-02 13:39:46,946 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:39:46 BoogieIcfgContainer [2020-12-02 13:39:46,947 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-02 13:39:46,955 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-02 13:39:46,955 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-02 13:39:46,964 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-02 13:39:46,965 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 01:39:46" (1/3) ... [2020-12-02 13:39:46,966 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ac15fcb 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 13:39:46,966 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 13:39:46,967 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ac15fcb 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 13:39:46,967 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 13:39:46,972 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_1_6.i [2020-12-02 13:39:47,015 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-02 13:39:47,022 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-02 13:39:47,058 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-02 13:39:47,108 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-02 13:39:47,108 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-02 13:39:47,108 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-02 13:39:47,109 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-02 13:39:47,109 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-02 13:39:47,109 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-02 13:39:47,109 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-02 13:39:47,109 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-02 13:39:47,125 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2020-12-02 13:39:47,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-02 13:39:47,131 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 13:39:47,132 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 13:39:47,133 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 13:39:47,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 13:39:47,141 INFO L82 PathProgramCache]: Analyzing trace with hash 119351050, now seen corresponding path program 1 times [2020-12-02 13:39:47,153 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 13:39:47,154 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415474533] [2020-12-02 13:39:47,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 13:39:47,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 13:39:47,324 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 13:39:47,325 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415474533] [2020-12-02 13:39:47,326 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 13:39:47,326 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-02 13:39:47,327 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799820445] [2020-12-02 13:39:47,333 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-02 13:39:47,333 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 13:39:47,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-02 13:39:47,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-02 13:39:47,353 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 2 states. [2020-12-02 13:39:47,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 13:39:47,380 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2020-12-02 13:39:47,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-02 13:39:47,381 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-12-02 13:39:47,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 13:39:47,391 INFO L225 Difference]: With dead ends: 23 [2020-12-02 13:39:47,391 INFO L226 Difference]: Without dead ends: 9 [2020-12-02 13:39:47,395 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 13:39:47,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2020-12-02 13:39:47,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2020-12-02 13:39:47,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-12-02 13:39:47,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 8 transitions. [2020-12-02 13:39:47,433 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 8 transitions. Word has length 8 [2020-12-02 13:39:47,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 13:39:47,434 INFO L481 AbstractCegarLoop]: Abstraction has 9 states and 8 transitions. [2020-12-02 13:39:47,434 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-02 13:39:47,434 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2020-12-02 13:39:47,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-02 13:39:47,435 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 13:39:47,435 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 13:39:47,436 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-02 13:39:47,436 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 13:39:47,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 13:39:47,437 INFO L82 PathProgramCache]: Analyzing trace with hash 176609352, now seen corresponding path program 1 times [2020-12-02 13:39:47,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 13:39:47,438 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217035939] [2020-12-02 13:39:47,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 13:39:47,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-02 13:39:47,460 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-02 13:39:47,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-02 13:39:47,477 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-02 13:39:47,502 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-02 13:39:47,503 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-02 13:39:47,504 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-02 13:39:47,530 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 01:39:47 BoogieIcfgContainer [2020-12-02 13:39:47,530 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-02 13:39:47,531 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-02 13:39:47,531 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-02 13:39:47,532 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-02 13:39:47,532 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 13:39:47,536 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-02 13:39:47,536 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-02 13:39:47,539 INFO L168 Benchmark]: Toolchain (without parser) took 1435.95 ms. Allocated memory is still 46.1 MB. Free memory was 30.9 MB in the beginning and 22.4 MB in the end (delta: 8.5 MB). Peak memory consumption was 8.5 MB. Max. memory is 16.1 GB. [2020-12-02 13:39:47,540 INFO L168 Benchmark]: CDTParser took 0.37 ms. Allocated memory is still 37.7 MB. Free memory is still 17.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 13:39:47,541 INFO L168 Benchmark]: CACSL2BoogieTranslator took 354.28 ms. Allocated memory is still 46.1 MB. Free memory was 30.6 MB in the beginning and 20.4 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-02 13:39:47,542 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.59 ms. Allocated memory is still 46.1 MB. Free memory was 20.4 MB in the beginning and 30.9 MB in the end (delta: -10.5 MB). Peak memory consumption was 2.7 MB. Max. memory is 16.1 GB. [2020-12-02 13:39:47,542 INFO L168 Benchmark]: Boogie Preprocessor took 25.75 ms. Allocated memory is still 46.1 MB. Free memory was 30.9 MB in the beginning and 29.9 MB in the end (delta: 956.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 13:39:47,543 INFO L168 Benchmark]: RCFGBuilder took 406.17 ms. Allocated memory is still 46.1 MB. Free memory was 29.9 MB in the beginning and 19.1 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-02 13:39:47,544 INFO L168 Benchmark]: TraceAbstraction took 575.64 ms. Allocated memory is still 46.1 MB. Free memory was 30.1 MB in the beginning and 22.8 MB in the end (delta: 7.3 MB). Peak memory consumption was 6.7 MB. Max. memory is 16.1 GB. [2020-12-02 13:39:47,545 INFO L168 Benchmark]: Witness Printer took 5.28 ms. Allocated memory is still 46.1 MB. Free memory was 22.8 MB in the beginning and 22.4 MB in the end (delta: 367.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 13:39:47,549 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37 ms. Allocated memory is still 37.7 MB. Free memory is still 17.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 354.28 ms. Allocated memory is still 46.1 MB. Free memory was 30.6 MB in the beginning and 20.4 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 51.59 ms. Allocated memory is still 46.1 MB. Free memory was 20.4 MB in the beginning and 30.9 MB in the end (delta: -10.5 MB). Peak memory consumption was 2.7 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 25.75 ms. Allocated memory is still 46.1 MB. Free memory was 30.9 MB in the beginning and 29.9 MB in the end (delta: 956.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 406.17 ms. Allocated memory is still 46.1 MB. Free memory was 29.9 MB in the beginning and 19.1 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 575.64 ms. Allocated memory is still 46.1 MB. Free memory was 30.1 MB in the beginning and 22.8 MB in the end (delta: 7.3 MB). Peak memory consumption was 6.7 MB. Max. memory is 16.1 GB. * Witness Printer took 5.28 ms. Allocated memory is still 46.1 MB. Free memory was 22.8 MB in the beginning and 22.4 MB in the end (delta: 367.2 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 13:39:50,252 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-02 13:39:50,255 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-02 13:39:50,296 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-02 13:39:50,297 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-02 13:39:50,299 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-02 13:39:50,301 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-02 13:39:50,303 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-02 13:39:50,306 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-02 13:39:50,307 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-02 13:39:50,309 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-02 13:39:50,310 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-02 13:39:50,311 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-02 13:39:50,313 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-02 13:39:50,314 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-02 13:39:50,316 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-02 13:39:50,317 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-02 13:39:50,319 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-02 13:39:50,321 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-02 13:39:50,324 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-02 13:39:50,326 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-02 13:39:50,328 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-02 13:39:50,330 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-02 13:39:50,331 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-02 13:39:50,335 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-02 13:39:50,335 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-02 13:39:50,336 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-02 13:39:50,337 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-02 13:39:50,338 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-02 13:39:50,339 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-02 13:39:50,340 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-02 13:39:50,341 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-02 13:39:50,344 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-02 13:39:50,345 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-02 13:39:50,349 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-02 13:39:50,349 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-02 13:39:50,350 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-02 13:39:50,351 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-02 13:39:50,351 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-02 13:39:50,352 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-02 13:39:50,353 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-02 13:39:50,354 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-12-02 13:39:50,383 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-02 13:39:50,383 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-02 13:39:50,385 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-02 13:39:50,385 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-02 13:39:50,386 INFO L138 SettingsManager]: * Use SBE=true [2020-12-02 13:39:50,386 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-02 13:39:50,386 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-02 13:39:50,386 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-02 13:39:50,387 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-02 13:39:50,387 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-02 13:39:50,387 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-02 13:39:50,387 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-02 13:39:50,388 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-02 13:39:50,388 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-02 13:39:50,388 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-02 13:39:50,388 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-02 13:39:50,389 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-02 13:39:50,389 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-02 13:39:50,389 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-02 13:39:50,390 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-02 13:39:50,390 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-02 13:39:50,390 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-02 13:39:50,390 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-02 13:39:50,391 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-02 13:39:50,391 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-02 13:39:50,391 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-02 13:39:50,392 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-12-02 13:39:50,392 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-12-02 13:39:50,392 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-02 13:39:50,392 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-02 13:39:50,393 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-02 13:39:50,393 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c899a11b075f77e8271e38f51a1c9ce4fc2e25ab [2020-12-02 13:39:50,853 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-02 13:39:50,907 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-02 13:39:50,911 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-02 13:39:50,914 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-02 13:39:50,915 INFO L275 PluginConnector]: CDTParser initialized [2020-12-02 13:39:50,916 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/floats-cdfpl/newton_1_6.i [2020-12-02 13:39:51,008 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3f762d51/740693727cc845009fd9d8bc3952ebc7/FLAG36d0b0f05 [2020-12-02 13:39:51,674 INFO L306 CDTParser]: Found 1 translation units. [2020-12-02 13:39:51,675 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/floats-cdfpl/newton_1_6.i [2020-12-02 13:39:51,683 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3f762d51/740693727cc845009fd9d8bc3952ebc7/FLAG36d0b0f05 [2020-12-02 13:39:52,027 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3f762d51/740693727cc845009fd9d8bc3952ebc7 [2020-12-02 13:39:52,031 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-02 13:39:52,033 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-02 13:39:52,038 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-02 13:39:52,038 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-02 13:39:52,043 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-02 13:39:52,045 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:39:52" (1/1) ... [2020-12-02 13:39:52,050 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7aa73f3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:39:52, skipping insertion in model container [2020-12-02 13:39:52,050 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:39:52" (1/1) ... [2020-12-02 13:39:52,061 INFO L146 MainTranslator]: Starting translation in SV-COMP mode [2020-12-02 13:39:52,080 INFO L179 MainTranslator]: Built tables and reachable declarations [2020-12-02 13:39:52,298 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_6.i[1224,1237] [2020-12-02 13:39:52,302 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-12-02 13:39:52,319 INFO L212 MainTranslator]: Completed pre-run [2020-12-02 13:39:52,351 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_6.i[1224,1237] [2020-12-02 13:39:52,352 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-12-02 13:39:52,373 INFO L217 MainTranslator]: Completed translation [2020-12-02 13:39:52,374 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:39:52 WrapperNode [2020-12-02 13:39:52,375 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-02 13:39:52,376 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-02 13:39:52,376 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-02 13:39:52,377 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-02 13:39:52,387 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 13:39:52,401 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 13:39:52,435 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-02 13:39:52,436 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-02 13:39:52,436 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-02 13:39:52,437 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-02 13:39:52,455 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 13:39:52,456 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 13:39:52,460 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 13:39:52,461 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 13:39:52,471 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 13:39:52,474 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 13:39:52,477 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 13:39:52,482 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-02 13:39:52,483 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-02 13:39:52,483 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-02 13:39:52,484 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-02 13:39:52,485 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 13:39:52,599 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.float_to_bitvec_DOUBLE [2020-12-02 13:39:52,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-12-02 13:39:52,600 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-02 13:39:52,600 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-02 13:39:52,601 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-02 13:39:52,601 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.float_to_bitvec_FLOAT [2020-12-02 13:40:00,042 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-02 13:40:00,042 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-12-02 13:40:00,044 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:40:00 BoogieIcfgContainer [2020-12-02 13:40:00,044 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-02 13:40:00,046 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-02 13:40:00,046 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-02 13:40:00,050 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-02 13:40:00,051 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 01:39:52" (1/3) ... [2020-12-02 13:40:00,052 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@449b5f56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:40:00, skipping insertion in model container [2020-12-02 13:40:00,052 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 13:40:00,053 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@449b5f56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:40:00, skipping insertion in model container [2020-12-02 13:40:00,053 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:40:00" (3/3) ... [2020-12-02 13:40:00,055 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_1_6.i [2020-12-02 13:40:00,073 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-02 13:40:00,078 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-02 13:40:00,097 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-02 13:40:00,123 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-02 13:40:00,123 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-02 13:40:00,124 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-02 13:40:00,124 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-02 13:40:00,124 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-02 13:40:00,124 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-02 13:40:00,124 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-02 13:40:00,124 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-02 13:40:00,137 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2020-12-02 13:40:00,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-02 13:40:00,143 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 13:40:00,144 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 13:40:00,144 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 13:40:00,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 13:40:00,151 INFO L82 PathProgramCache]: Analyzing trace with hash -1236295026, now seen corresponding path program 1 times [2020-12-02 13:40:00,166 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-02 13:40:00,167 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [538133896] [2020-12-02 13:40:00,167 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 13:40:02,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 13:40:02,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 1 conjunts are in the unsatisfiable core [2020-12-02 13:40:02,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 13:40:02,636 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 13:40:02,637 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-02 13:40:02,667 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 13:40:02,669 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [538133896] [2020-12-02 13:40:02,670 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-02 13:40:02,670 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-12-02 13:40:02,671 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99306793] [2020-12-02 13:40:02,675 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-02 13:40:02,676 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-02 13:40:02,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-02 13:40:02,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-02 13:40:02,692 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 2 states. [2020-12-02 13:40:02,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 13:40:02,709 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2020-12-02 13:40:02,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-02 13:40:02,711 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-12-02 13:40:02,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 13:40:02,724 INFO L225 Difference]: With dead ends: 25 [2020-12-02 13:40:02,725 INFO L226 Difference]: Without dead ends: 11 [2020-12-02 13:40:02,728 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 13:40:02,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-12-02 13:40:02,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-12-02 13:40:02,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-12-02 13:40:02,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2020-12-02 13:40:02,765 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 10 [2020-12-02 13:40:02,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 13:40:02,766 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2020-12-02 13:40:02,766 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-02 13:40:02,766 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2020-12-02 13:40:02,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-02 13:40:02,767 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 13:40:02,767 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 13:40:02,981 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-02 13:40:02,982 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 13:40:02,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 13:40:02,985 INFO L82 PathProgramCache]: Analyzing trace with hash -1179036724, now seen corresponding path program 1 times [2020-12-02 13:40:02,986 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-02 13:40:02,986 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [261195013] [2020-12-02 13:40:02,986 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 13:41:05,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-02 13:41:05,573 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-02 13:45:23,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-02 13:45:23,389 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-02 13:45:23,700 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-12-02 13:45:23,700 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-02 13:45:23,902 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-02 13:45:23,942 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 01:45:23 BoogieIcfgContainer [2020-12-02 13:45:23,943 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-02 13:45:23,944 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-02 13:45:23,944 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-02 13:45:23,944 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-02 13:45:23,945 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:40:00" (3/4) ... [2020-12-02 13:45:23,947 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-02 13:45:24,010 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-12-02 13:45:24,011 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-02 13:45:24,013 INFO L168 Benchmark]: Toolchain (without parser) took 331979.31 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 33.8 MB in the beginning and 30.5 MB in the end (delta: 3.3 MB). Peak memory consumption was 17.5 MB. Max. memory is 16.1 GB. [2020-12-02 13:45:24,014 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 41.9 MB. Free memory was 19.8 MB in the beginning and 19.8 MB in the end (delta: 69.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 13:45:24,015 INFO L168 Benchmark]: CACSL2BoogieTranslator took 337.55 ms. Allocated memory is still 56.6 MB. Free memory was 33.5 MB in the beginning and 34.8 MB in the end (delta: -1.3 MB). Peak memory consumption was 7.7 MB. Max. memory is 16.1 GB. [2020-12-02 13:45:24,016 INFO L168 Benchmark]: Boogie Procedure Inliner took 59.26 ms. Allocated memory is still 56.6 MB. Free memory was 34.6 MB in the beginning and 32.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 13:45:24,017 INFO L168 Benchmark]: Boogie Preprocessor took 46.15 ms. Allocated memory is still 56.6 MB. Free memory was 32.5 MB in the beginning and 30.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 13:45:24,018 INFO L168 Benchmark]: RCFGBuilder took 7561.31 ms. Allocated memory is still 56.6 MB. Free memory was 30.8 MB in the beginning and 31.1 MB in the end (delta: -334.9 kB). Peak memory consumption was 8.9 MB. Max. memory is 16.1 GB. [2020-12-02 13:45:24,019 INFO L168 Benchmark]: TraceAbstraction took 323896.93 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 30.6 MB in the beginning and 32.5 MB in the end (delta: -1.9 MB). Peak memory consumption was 9.2 MB. Max. memory is 16.1 GB. [2020-12-02 13:45:24,020 INFO L168 Benchmark]: Witness Printer took 66.82 ms. Allocated memory is still 69.2 MB. Free memory was 32.5 MB in the beginning and 30.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 13:45:24,024 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 41.9 MB. Free memory was 19.8 MB in the beginning and 19.8 MB in the end (delta: 69.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 337.55 ms. Allocated memory is still 56.6 MB. Free memory was 33.5 MB in the beginning and 34.8 MB in the end (delta: -1.3 MB). Peak memory consumption was 7.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 59.26 ms. Allocated memory is still 56.6 MB. Free memory was 34.6 MB in the beginning and 32.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 46.15 ms. Allocated memory is still 56.6 MB. Free memory was 32.5 MB in the beginning and 30.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 7561.31 ms. Allocated memory is still 56.6 MB. Free memory was 30.8 MB in the beginning and 31.1 MB in the end (delta: -334.9 kB). Peak memory consumption was 8.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 323896.93 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 30.6 MB in the beginning and 32.5 MB in the end (delta: -1.9 MB). Peak memory consumption was 9.2 MB. Max. memory is 16.1 GB. * Witness Printer took 66.82 ms. Allocated memory is still 69.2 MB. Free memory was 32.5 MB in the beginning and 30.5 MB in the end (delta: 2.0 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 1.2f [L31] EXPR -1.2f [L31] IN > -1.2f && IN < 1.2f [L31] EXPR 1.2f [L31] IN > -1.2f && IN < 1.2f [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: 323.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 15 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 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, 64.6s 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...