./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/floats-cdfpl/newton_1_6.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ee8e70e7 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/floats-cdfpl/newton_1_6.i -s /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 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-2/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/floats-cdfpl/newton_1_6.i -s /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 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-ee8e70e [2020-10-24 13:46:08,459 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 13:46:08,463 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 13:46:08,523 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-24 13:46:08,524 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-24 13:46:08,530 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-24 13:46:08,536 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-24 13:46:08,540 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-24 13:46:08,548 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-24 13:46:08,554 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-24 13:46:08,556 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-24 13:46:08,558 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-24 13:46:08,558 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 13:46:08,563 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 13:46:08,565 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 13:46:08,567 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 13:46:08,569 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 13:46:08,573 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 13:46:08,576 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 13:46:08,584 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 13:46:08,586 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 13:46:08,588 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 13:46:08,590 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 13:46:08,592 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 13:46:08,600 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-24 13:46:08,601 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-24 13:46:08,601 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-24 13:46:08,604 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-24 13:46:08,605 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-24 13:46:08,606 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-24 13:46:08,606 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-24 13:46:08,607 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-24 13:46:08,609 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-24 13:46:08,610 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-24 13:46:08,612 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-24 13:46:08,612 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-24 13:46:08,613 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-24 13:46:08,613 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-24 13:46:08,614 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 13:46:08,616 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 13:46:08,617 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 13:46:08,618 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-24 13:46:08,685 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 13:46:08,686 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 13:46:08,689 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-24 13:46:08,689 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-24 13:46:08,689 INFO L138 SettingsManager]: * Use SBE=true [2020-10-24 13:46:08,690 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 13:46:08,690 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 13:46:08,690 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-24 13:46:08,691 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 13:46:08,691 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 13:46:08,692 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 13:46:08,693 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 13:46:08,693 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 13:46:08,693 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 13:46:08,693 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 13:46:08,694 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 13:46:08,694 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 13:46:08,695 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 13:46:08,695 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-24 13:46:08,695 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 13:46:08,696 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 13:46:08,696 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 13:46:08,696 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 13:46:08,696 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-24 13:46:08,697 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-24 13:46:08,697 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-24 13:46:08,697 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-24 13:46:08,697 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 13:46:08,698 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-24 13:46:08,698 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c899a11b075f77e8271e38f51a1c9ce4fc2e25ab [2020-10-24 13:46:09,138 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 13:46:09,182 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 13:46:09,187 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 13:46:09,189 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 13:46:09,190 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 13:46:09,192 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cdfpl/newton_1_6.i [2020-10-24 13:46:09,274 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/728d60c2a/b2f16d976c514d018c45616b1a71ac96/FLAG13987137c [2020-10-24 13:46:09,981 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 13:46:09,982 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_1_6.i [2020-10-24 13:46:09,991 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/728d60c2a/b2f16d976c514d018c45616b1a71ac96/FLAG13987137c [2020-10-24 13:46:10,305 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/728d60c2a/b2f16d976c514d018c45616b1a71ac96 [2020-10-24 13:46:10,309 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 13:46:10,317 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-24 13:46:10,319 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 13:46:10,319 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 13:46:10,335 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 13:46:10,336 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:46:10" (1/1) ... [2020-10-24 13:46:10,340 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@543cd269 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:46:10, skipping insertion in model container [2020-10-24 13:46:10,341 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:46:10" (1/1) ... [2020-10-24 13:46:10,363 INFO L146 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 13:46:10,384 INFO L179 MainTranslator]: Built tables and reachable declarations [2020-10-24 13:46:10,575 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-10-24 13:46:10,587 INFO L212 MainTranslator]: Completed pre-run [2020-10-24 13:46:10,611 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-10-24 13:46:10,630 INFO L217 MainTranslator]: Completed translation [2020-10-24 13:46:10,631 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:46:10 WrapperNode [2020-10-24 13:46:10,631 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 13:46:10,633 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-24 13:46:10,633 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-24 13:46:10,633 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-24 13:46:10,643 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:46:10" (1/1) ... [2020-10-24 13:46:10,660 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:46:10" (1/1) ... [2020-10-24 13:46:10,685 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-24 13:46:10,686 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 13:46:10,687 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 13:46:10,687 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 13:46:10,697 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:46:10" (1/1) ... [2020-10-24 13:46:10,698 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:46:10" (1/1) ... [2020-10-24 13:46:10,700 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:46:10" (1/1) ... [2020-10-24 13:46:10,700 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:46:10" (1/1) ... [2020-10-24 13:46:10,706 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:46:10" (1/1) ... [2020-10-24 13:46:10,708 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:46:10" (1/1) ... [2020-10-24 13:46:10,710 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:46:10" (1/1) ... [2020-10-24 13:46:10,712 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 13:46:10,714 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 13:46:10,714 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 13:46:10,714 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 13:46:10,715 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:46:10" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 13:46:10,808 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-24 13:46:10,808 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 13:46:10,809 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 13:46:10,809 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 13:46:11,083 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 13:46:11,084 INFO L298 CfgBuilder]: Removed 12 assume(true) statements. [2020-10-24 13:46:11,086 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:46:11 BoogieIcfgContainer [2020-10-24 13:46:11,087 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 13:46:11,089 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 13:46:11,090 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 13:46:11,095 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 13:46:11,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 01:46:10" (1/3) ... [2020-10-24 13:46:11,096 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50e0b1bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:46:11, skipping insertion in model container [2020-10-24 13:46:11,097 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:46:10" (2/3) ... [2020-10-24 13:46:11,097 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50e0b1bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:46:11, skipping insertion in model container [2020-10-24 13:46:11,097 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:46:11" (3/3) ... [2020-10-24 13:46:11,100 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_1_6.i [2020-10-24 13:46:11,134 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-24 13:46:11,143 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 13:46:11,183 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 13:46:11,256 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 13:46:11,259 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 13:46:11,259 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-24 13:46:11,261 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 13:46:11,261 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 13:46:11,262 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 13:46:11,262 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 13:46:11,262 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 13:46:11,287 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2020-10-24 13:46:11,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-24 13:46:11,294 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 13:46:11,295 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 13:46:11,297 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 13:46:11,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 13:46:11,306 INFO L82 PathProgramCache]: Analyzing trace with hash -595084600, now seen corresponding path program 1 times [2020-10-24 13:46:11,317 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 13:46:11,319 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848312207] [2020-10-24 13:46:11,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 13:46:11,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 13:46:11,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 13:46:11,541 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848312207] [2020-10-24 13:46:11,542 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 13:46:11,542 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-24 13:46:11,543 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005738139] [2020-10-24 13:46:11,549 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-24 13:46:11,550 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-24 13:46:11,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-24 13:46:11,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-24 13:46:11,575 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 2 states. [2020-10-24 13:46:11,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 13:46:11,596 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2020-10-24 13:46:11,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-24 13:46:11,597 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2020-10-24 13:46:11,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 13:46:11,609 INFO L225 Difference]: With dead ends: 25 [2020-10-24 13:46:11,609 INFO L226 Difference]: Without dead ends: 10 [2020-10-24 13:46:11,614 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-24 13:46:11,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-10-24 13:46:11,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2020-10-24 13:46:11,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-10-24 13:46:11,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 9 transitions. [2020-10-24 13:46:11,669 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 9 transitions. Word has length 9 [2020-10-24 13:46:11,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 13:46:11,670 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 9 transitions. [2020-10-24 13:46:11,670 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-24 13:46:11,671 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 9 transitions. [2020-10-24 13:46:11,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-24 13:46:11,672 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 13:46:11,672 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 13:46:11,673 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-24 13:46:11,673 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 13:46:11,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 13:46:11,678 INFO L82 PathProgramCache]: Analyzing trace with hash 1179922762, now seen corresponding path program 1 times [2020-10-24 13:46:11,678 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 13:46:11,679 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176813023] [2020-10-24 13:46:11,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 13:46:11,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 13:46:11,734 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 13:46:11,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 13:46:11,768 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 13:46:11,805 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-24 13:46:11,806 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-24 13:46:11,807 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-24 13:46:11,846 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 01:46:11 BoogieIcfgContainer [2020-10-24 13:46:11,846 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 13:46:11,847 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-24 13:46:11,847 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-24 13:46:11,848 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-24 13:46:11,849 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:46:11" (3/4) ... [2020-10-24 13:46:11,853 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-24 13:46:11,853 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-24 13:46:11,858 INFO L168 Benchmark]: Toolchain (without parser) took 1544.33 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 21.2 MB in the beginning and 22.7 MB in the end (delta: -1.5 MB). Peak memory consumption was 11.0 MB. Max. memory is 16.1 GB. [2020-10-24 13:46:11,860 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 44.0 MB. Free memory was 28.8 MB in the beginning and 28.7 MB in the end (delta: 42.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 13:46:11,862 INFO L168 Benchmark]: CACSL2BoogieTranslator took 312.96 ms. Allocated memory is still 44.0 MB. Free memory was 20.5 MB in the beginning and 19.7 MB in the end (delta: 783.0 kB). Peak memory consumption was 3.4 MB. Max. memory is 16.1 GB. [2020-10-24 13:46:11,863 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.84 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 19.6 MB in the beginning and 38.7 MB in the end (delta: -19.0 MB). Peak memory consumption was 4.5 MB. Max. memory is 16.1 GB. [2020-10-24 13:46:11,865 INFO L168 Benchmark]: Boogie Preprocessor took 26.54 ms. Allocated memory is still 54.5 MB. Free memory was 38.7 MB in the beginning and 37.8 MB in the end (delta: 903.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 13:46:11,866 INFO L168 Benchmark]: RCFGBuilder took 373.19 ms. Allocated memory is still 54.5 MB. Free memory was 37.8 MB in the beginning and 27.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-10-24 13:46:11,867 INFO L168 Benchmark]: TraceAbstraction took 757.23 ms. Allocated memory is still 54.5 MB. Free memory was 26.6 MB in the beginning and 23.0 MB in the end (delta: 3.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 16.1 GB. [2020-10-24 13:46:11,869 INFO L168 Benchmark]: Witness Printer took 6.49 ms. Allocated memory is still 54.5 MB. Free memory was 23.0 MB in the beginning and 22.7 MB in the end (delta: 294.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 13:46:11,886 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 44.0 MB. Free memory was 28.8 MB in the beginning and 28.7 MB in the end (delta: 42.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 312.96 ms. Allocated memory is still 44.0 MB. Free memory was 20.5 MB in the beginning and 19.7 MB in the end (delta: 783.0 kB). Peak memory consumption was 3.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 52.84 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 19.6 MB in the beginning and 38.7 MB in the end (delta: -19.0 MB). Peak memory consumption was 4.5 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 26.54 ms. Allocated memory is still 54.5 MB. Free memory was 38.7 MB in the beginning and 37.8 MB in the end (delta: 903.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 373.19 ms. Allocated memory is still 54.5 MB. Free memory was 37.8 MB in the beginning and 27.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 757.23 ms. Allocated memory is still 54.5 MB. Free memory was 26.6 MB in the beginning and 23.0 MB in the end (delta: 3.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 16.1 GB. * Witness Printer took 6.49 ms. Allocated memory is still 54.5 MB. Free memory was 23.0 MB in the beginning and 22.7 MB in the end (delta: 294.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 12]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryArithmeticFLOAT_SMToperation at line 33, overapproximation of someBinaryDOUBLE_SMTComparisonOperation at line 41, overapproximation of someBinaryFLOAT_SMTComparisonOperation at line 31. Possible FailurePath: [L30] float IN = __VERIFIER_nondet_float(); [L15] COND FALSE !(!cond) [L20] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L25] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L33] float x = IN - f(IN)/fp(IN); [L41] COND TRUE !(x < 0.1) [L12] COND FALSE !(0) [L12] __assert_fail ("0", "newton_1_6.c", 3, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 13 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 64 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-ee8e70e [2020-10-24 13:46:14,459 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 13:46:14,464 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 13:46:14,519 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-24 13:46:14,520 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-24 13:46:14,525 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-24 13:46:14,531 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-24 13:46:14,535 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-24 13:46:14,539 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-24 13:46:14,547 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-24 13:46:14,551 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-24 13:46:14,556 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-24 13:46:14,557 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 13:46:14,561 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 13:46:14,562 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 13:46:14,564 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 13:46:14,566 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 13:46:14,570 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 13:46:14,574 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 13:46:14,581 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 13:46:14,586 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 13:46:14,587 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 13:46:14,590 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 13:46:14,592 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 13:46:14,599 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-24 13:46:14,602 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-24 13:46:14,603 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-24 13:46:14,604 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-24 13:46:14,606 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-24 13:46:14,607 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-24 13:46:14,608 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-24 13:46:14,609 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-24 13:46:14,611 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-24 13:46:14,612 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-24 13:46:14,614 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-24 13:46:14,614 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-24 13:46:14,623 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-24 13:46:14,623 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-24 13:46:14,623 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 13:46:14,628 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 13:46:14,628 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 13:46:14,630 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-10-24 13:46:14,682 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 13:46:14,683 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 13:46:14,686 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-24 13:46:14,686 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-24 13:46:14,686 INFO L138 SettingsManager]: * Use SBE=true [2020-10-24 13:46:14,687 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 13:46:14,687 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 13:46:14,687 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 13:46:14,687 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 13:46:14,688 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 13:46:14,689 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 13:46:14,690 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 13:46:14,690 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-24 13:46:14,690 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-24 13:46:14,690 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 13:46:14,691 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 13:46:14,691 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 13:46:14,691 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 13:46:14,692 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 13:46:14,692 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-24 13:46:14,692 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 13:46:14,693 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 13:46:14,693 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 13:46:14,693 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 13:46:14,694 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-24 13:46:14,694 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-24 13:46:14,694 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-24 13:46:14,694 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-24 13:46:14,695 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 13:46:14,695 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-24 13:46:14,695 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-24 13:46:14,695 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c899a11b075f77e8271e38f51a1c9ce4fc2e25ab [2020-10-24 13:46:15,198 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 13:46:15,233 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 13:46:15,237 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 13:46:15,239 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 13:46:15,240 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 13:46:15,241 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cdfpl/newton_1_6.i [2020-10-24 13:46:15,330 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1ba3d77ad/3e009e92044a439c878f3094a9e77d88/FLAG395357ebd [2020-10-24 13:46:15,954 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 13:46:15,955 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_1_6.i [2020-10-24 13:46:15,965 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1ba3d77ad/3e009e92044a439c878f3094a9e77d88/FLAG395357ebd [2020-10-24 13:46:16,309 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1ba3d77ad/3e009e92044a439c878f3094a9e77d88 [2020-10-24 13:46:16,320 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 13:46:16,328 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-24 13:46:16,330 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 13:46:16,331 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 13:46:16,335 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 13:46:16,336 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:46:16" (1/1) ... [2020-10-24 13:46:16,340 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e278f76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:46:16, skipping insertion in model container [2020-10-24 13:46:16,340 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:46:16" (1/1) ... [2020-10-24 13:46:16,349 INFO L146 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 13:46:16,367 INFO L179 MainTranslator]: Built tables and reachable declarations [2020-10-24 13:46:16,571 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-10-24 13:46:16,589 INFO L212 MainTranslator]: Completed pre-run [2020-10-24 13:46:16,621 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-10-24 13:46:16,643 INFO L217 MainTranslator]: Completed translation [2020-10-24 13:46:16,644 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:46:16 WrapperNode [2020-10-24 13:46:16,644 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 13:46:16,646 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-24 13:46:16,646 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-24 13:46:16,646 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-24 13:46:16,656 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:46:16" (1/1) ... [2020-10-24 13:46:16,671 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:46:16" (1/1) ... [2020-10-24 13:46:16,714 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-24 13:46:16,715 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 13:46:16,715 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 13:46:16,715 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 13:46:16,731 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:46:16" (1/1) ... [2020-10-24 13:46:16,732 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:46:16" (1/1) ... [2020-10-24 13:46:16,741 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:46:16" (1/1) ... [2020-10-24 13:46:16,742 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:46:16" (1/1) ... [2020-10-24 13:46:16,773 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:46:16" (1/1) ... [2020-10-24 13:46:16,775 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:46:16" (1/1) ... [2020-10-24 13:46:16,778 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:46:16" (1/1) ... [2020-10-24 13:46:16,790 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 13:46:16,794 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 13:46:16,794 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 13:46:16,795 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 13:46:16,799 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:46:16" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 13:46:16,903 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.float_to_bitvec_DOUBLE [2020-10-24 13:46:16,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-24 13:46:16,905 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 13:46:16,906 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 13:46:16,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 13:46:16,906 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.float_to_bitvec_FLOAT [2020-10-24 13:46:22,441 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 13:46:22,442 INFO L298 CfgBuilder]: Removed 12 assume(true) statements. [2020-10-24 13:46:22,443 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:46:22 BoogieIcfgContainer [2020-10-24 13:46:22,444 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 13:46:22,446 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 13:46:22,446 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 13:46:22,449 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 13:46:22,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 01:46:16" (1/3) ... [2020-10-24 13:46:22,451 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b5cd2b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:46:22, skipping insertion in model container [2020-10-24 13:46:22,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:46:16" (2/3) ... [2020-10-24 13:46:22,451 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b5cd2b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:46:22, skipping insertion in model container [2020-10-24 13:46:22,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:46:22" (3/3) ... [2020-10-24 13:46:22,453 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_1_6.i [2020-10-24 13:46:22,463 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-24 13:46:22,469 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 13:46:22,484 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 13:46:22,513 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 13:46:22,514 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 13:46:22,514 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-24 13:46:22,514 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 13:46:22,514 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 13:46:22,514 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 13:46:22,515 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 13:46:22,515 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 13:46:22,530 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2020-10-24 13:46:22,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-24 13:46:22,537 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 13:46:22,538 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 13:46:22,538 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 13:46:22,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 13:46:22,544 INFO L82 PathProgramCache]: Analyzing trace with hash 329560011, now seen corresponding path program 1 times [2020-10-24 13:46:22,559 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 13:46:22,560 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1589164611] [2020-10-24 13:46:22,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-10-24 13:46:25,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 13:46:25,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 1 conjunts are in the unsatisfiable core [2020-10-24 13:46:25,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 13:46:25,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 13:46:25,656 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 13:46:25,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 13:46:25,663 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1589164611] [2020-10-24 13:46:25,664 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 13:46:25,664 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-24 13:46:25,665 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730562041] [2020-10-24 13:46:25,670 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-24 13:46:25,671 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 13:46:25,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-24 13:46:25,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-24 13:46:25,690 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 2 states. [2020-10-24 13:46:25,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 13:46:25,706 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2020-10-24 13:46:25,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-24 13:46:25,708 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-10-24 13:46:25,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 13:46:25,717 INFO L225 Difference]: With dead ends: 27 [2020-10-24 13:46:25,718 INFO L226 Difference]: Without dead ends: 12 [2020-10-24 13:46:25,721 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-24 13:46:25,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-10-24 13:46:25,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-10-24 13:46:25,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-10-24 13:46:25,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2020-10-24 13:46:25,757 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 11 [2020-10-24 13:46:25,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 13:46:25,757 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2020-10-24 13:46:25,757 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-24 13:46:25,758 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2020-10-24 13:46:25,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-24 13:46:25,758 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 13:46:25,759 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 13:46:25,973 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-24 13:46:25,974 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 13:46:25,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 13:46:25,976 INFO L82 PathProgramCache]: Analyzing trace with hash 2104567373, now seen corresponding path program 1 times [2020-10-24 13:46:25,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 13:46:25,977 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2127415985] [2020-10-24 13:46:25,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-10-24 13:46:56,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 13:46:56,854 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 13:47:20,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 13:47:20,772 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 13:47:21,200 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-10-24 13:47:21,201 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-24 13:47:21,402 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-24 13:47:21,439 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 01:47:21 BoogieIcfgContainer [2020-10-24 13:47:21,441 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 13:47:21,442 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-24 13:47:21,442 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-24 13:47:21,442 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-24 13:47:21,443 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:46:22" (3/4) ... [2020-10-24 13:47:21,445 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-24 13:47:21,505 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-24 13:47:21,505 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-24 13:47:21,508 INFO L168 Benchmark]: Toolchain (without parser) took 65184.46 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 22.1 MB in the beginning and 35.7 MB in the end (delta: -13.6 MB). Peak memory consumption was 15.6 MB. Max. memory is 16.1 GB. [2020-10-24 13:47:21,509 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 44.0 MB. Free memory was 24.5 MB in the beginning and 24.4 MB in the end (delta: 32.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 13:47:21,510 INFO L168 Benchmark]: CACSL2BoogieTranslator took 314.58 ms. Allocated memory is still 44.0 MB. Free memory was 21.4 MB in the beginning and 20.9 MB in the end (delta: 550.5 kB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. [2020-10-24 13:47:21,511 INFO L168 Benchmark]: Boogie Procedure Inliner took 68.25 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 20.8 MB in the beginning and 38.2 MB in the end (delta: -17.4 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. [2020-10-24 13:47:21,512 INFO L168 Benchmark]: Boogie Preprocessor took 78.13 ms. Allocated memory is still 54.5 MB. Free memory was 38.2 MB in the beginning and 36.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 13:47:21,513 INFO L168 Benchmark]: RCFGBuilder took 5650.15 ms. Allocated memory is still 54.5 MB. Free memory was 36.6 MB in the beginning and 35.5 MB in the end (delta: 1.1 MB). Peak memory consumption was 14.4 MB. Max. memory is 16.1 GB. [2020-10-24 13:47:21,514 INFO L168 Benchmark]: TraceAbstraction took 58995.16 ms. Allocated memory is still 54.5 MB. Free memory was 35.0 MB in the beginning and 20.5 MB in the end (delta: 14.6 MB). Peak memory consumption was 13.4 MB. Max. memory is 16.1 GB. [2020-10-24 13:47:21,515 INFO L168 Benchmark]: Witness Printer took 63.76 ms. Allocated memory is still 54.5 MB. Free memory was 20.5 MB in the beginning and 35.7 MB in the end (delta: -15.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 13:47:21,519 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 44.0 MB. Free memory was 24.5 MB in the beginning and 24.4 MB in the end (delta: 32.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 314.58 ms. Allocated memory is still 44.0 MB. Free memory was 21.4 MB in the beginning and 20.9 MB in the end (delta: 550.5 kB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 68.25 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 20.8 MB in the beginning and 38.2 MB in the end (delta: -17.4 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 78.13 ms. Allocated memory is still 54.5 MB. Free memory was 38.2 MB in the beginning and 36.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 5650.15 ms. Allocated memory is still 54.5 MB. Free memory was 36.6 MB in the beginning and 35.5 MB in the end (delta: 1.1 MB). Peak memory consumption was 14.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 58995.16 ms. Allocated memory is still 54.5 MB. Free memory was 35.0 MB in the beginning and 20.5 MB in the end (delta: 14.6 MB). Peak memory consumption was 13.4 MB. Max. memory is 16.1 GB. * Witness Printer took 63.76 ms. Allocated memory is still 54.5 MB. Free memory was 20.5 MB in the beginning and 35.7 MB in the end (delta: -15.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 12]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L30] float IN = __VERIFIER_nondet_float(); [L31] EXPR 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) [L12] COND FALSE !(0) [L12] __assert_fail ("0", "newton_1_6.c", 3, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 58.8s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 16 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 20 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 33.5s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 200 SizeOfPredicates, 0 NumberOfNonLiveVariables, 78 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...