./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/floats-cdfpl/newton_3_8.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 54858612 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/floats-cdfpl/newton_3_8.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3e7a5c2d38e9221fb261a8b3d947e8e6a8fda84a .................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/floats-cdfpl/newton_3_8.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3e7a5c2d38e9221fb261a8b3d947e8e6a8fda84a ............................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-5485861 [2020-10-25 21:31:58,690 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-25 21:31:58,693 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-25 21:31:58,740 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-25 21:31:58,741 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-25 21:31:58,742 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-25 21:31:58,744 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-25 21:31:58,746 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-25 21:31:58,749 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-25 21:31:58,750 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-25 21:31:58,751 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-25 21:31:58,753 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-25 21:31:58,753 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-25 21:31:58,755 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-25 21:31:58,756 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-25 21:31:58,758 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-25 21:31:58,759 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-25 21:31:58,760 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-25 21:31:58,762 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-25 21:31:58,765 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-25 21:31:58,767 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-25 21:31:58,769 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-25 21:31:58,771 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-25 21:31:58,772 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-25 21:31:58,776 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-25 21:31:58,776 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-25 21:31:58,777 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-25 21:31:58,778 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-25 21:31:58,779 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-25 21:31:58,780 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-25 21:31:58,780 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-25 21:31:58,781 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-25 21:31:58,782 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-25 21:31:58,783 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-25 21:31:58,785 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-25 21:31:58,785 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-25 21:31:58,786 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-25 21:31:58,787 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-25 21:31:58,787 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-25 21:31:58,788 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-25 21:31:58,789 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-25 21:31:58,790 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-25 21:31:58,847 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-25 21:31:58,848 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-25 21:31:58,852 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-25 21:31:58,853 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-25 21:31:58,854 INFO L138 SettingsManager]: * Use SBE=true [2020-10-25 21:31:58,854 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-25 21:31:58,854 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-25 21:31:58,855 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-25 21:31:58,855 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-25 21:31:58,855 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-25 21:31:58,856 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-25 21:31:58,857 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-25 21:31:58,857 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-25 21:31:58,857 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-25 21:31:58,858 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-25 21:31:58,858 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-25 21:31:58,858 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-25 21:31:58,859 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-25 21:31:58,859 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-25 21:31:58,859 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-25 21:31:58,859 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-25 21:31:58,860 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-25 21:31:58,860 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-25 21:31:58,861 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-25 21:31:58,861 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-25 21:31:58,861 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-25 21:31:58,862 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-25 21:31:58,862 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-25 21:31:58,862 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-25 21:31:58,863 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3e7a5c2d38e9221fb261a8b3d947e8e6a8fda84a [2020-10-25 21:31:59,267 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-25 21:31:59,299 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-25 21:31:59,302 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-25 21:31:59,304 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-25 21:31:59,305 INFO L275 PluginConnector]: CDTParser initialized [2020-10-25 21:31:59,306 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cdfpl/newton_3_8.i [2020-10-25 21:31:59,390 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d80660f1e/d09b3403dd2143d8b02ba56d8bbd868a/FLAG744e1a0b6 [2020-10-25 21:31:59,983 INFO L306 CDTParser]: Found 1 translation units. [2020-10-25 21:31:59,984 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_3_8.i [2020-10-25 21:31:59,992 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d80660f1e/d09b3403dd2143d8b02ba56d8bbd868a/FLAG744e1a0b6 [2020-10-25 21:32:00,370 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d80660f1e/d09b3403dd2143d8b02ba56d8bbd868a [2020-10-25 21:32:00,375 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-25 21:32:00,386 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-25 21:32:00,391 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-25 21:32:00,391 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-25 21:32:00,396 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-25 21:32:00,398 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 09:32:00" (1/1) ... [2020-10-25 21:32:00,407 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@525125b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:32:00, skipping insertion in model container [2020-10-25 21:32:00,408 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 09:32:00" (1/1) ... [2020-10-25 21:32:00,419 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-25 21:32:00,442 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-25 21:32:00,686 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 21:32:00,698 INFO L203 MainTranslator]: Completed pre-run [2020-10-25 21:32:00,722 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 21:32:00,741 INFO L208 MainTranslator]: Completed translation [2020-10-25 21:32:00,742 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:32:00 WrapperNode [2020-10-25 21:32:00,742 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-25 21:32:00,744 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-25 21:32:00,744 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-25 21:32:00,745 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-25 21:32:00,756 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:32:00" (1/1) ... [2020-10-25 21:32:00,766 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:32:00" (1/1) ... [2020-10-25 21:32:00,794 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-25 21:32:00,795 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-25 21:32:00,795 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-25 21:32:00,795 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-25 21:32:00,807 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:32:00" (1/1) ... [2020-10-25 21:32:00,807 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:32:00" (1/1) ... [2020-10-25 21:32:00,810 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:32:00" (1/1) ... [2020-10-25 21:32:00,811 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:32:00" (1/1) ... [2020-10-25 21:32:00,817 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:32:00" (1/1) ... [2020-10-25 21:32:00,820 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:32:00" (1/1) ... [2020-10-25 21:32:00,822 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:32:00" (1/1) ... [2020-10-25 21:32:00,825 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-25 21:32:00,833 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-25 21:32:00,833 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-25 21:32:00,833 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-25 21:32:00,835 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:32:00" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-25 21:32:00,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-25 21:32:00,941 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-25 21:32:00,941 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-25 21:32:00,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-25 21:32:01,446 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-25 21:32:01,447 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-10-25 21:32:01,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 09:32:01 BoogieIcfgContainer [2020-10-25 21:32:01,451 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-25 21:32:01,456 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-25 21:32:01,457 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-25 21:32:01,461 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-25 21:32:01,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 09:32:00" (1/3) ... [2020-10-25 21:32:01,463 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@243cdcc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 09:32:01, skipping insertion in model container [2020-10-25 21:32:01,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:32:00" (2/3) ... [2020-10-25 21:32:01,464 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@243cdcc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 09:32:01, skipping insertion in model container [2020-10-25 21:32:01,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 09:32:01" (3/3) ... [2020-10-25 21:32:01,466 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_3_8.i [2020-10-25 21:32:01,486 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-25 21:32:01,491 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-25 21:32:01,506 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-25 21:32:01,557 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-25 21:32:01,557 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-25 21:32:01,557 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-25 21:32:01,558 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-25 21:32:01,558 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-25 21:32:01,558 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-25 21:32:01,558 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-25 21:32:01,559 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-25 21:32:01,579 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2020-10-25 21:32:01,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-25 21:32:01,589 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 21:32:01,590 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 21:32:01,591 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 21:32:01,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 21:32:01,600 INFO L82 PathProgramCache]: Analyzing trace with hash 1296243724, now seen corresponding path program 1 times [2020-10-25 21:32:01,611 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 21:32:01,613 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352270162] [2020-10-25 21:32:01,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 21:32:01,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 21:32:01,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 21:32:01,827 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352270162] [2020-10-25 21:32:01,828 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 21:32:01,828 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-25 21:32:01,830 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223002666] [2020-10-25 21:32:01,837 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-25 21:32:01,838 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 21:32:01,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-25 21:32:01,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-25 21:32:01,861 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 2 states. [2020-10-25 21:32:01,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 21:32:01,883 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2020-10-25 21:32:01,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-25 21:32:01,886 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-10-25 21:32:01,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 21:32:01,897 INFO L225 Difference]: With dead ends: 33 [2020-10-25 21:32:01,897 INFO L226 Difference]: Without dead ends: 14 [2020-10-25 21:32:01,903 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-25 21:32:01,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-10-25 21:32:01,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-10-25 21:32:01,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-10-25 21:32:01,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 13 transitions. [2020-10-25 21:32:01,954 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 13 transitions. Word has length 13 [2020-10-25 21:32:01,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 21:32:01,955 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 13 transitions. [2020-10-25 21:32:01,955 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-25 21:32:01,956 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 13 transitions. [2020-10-25 21:32:01,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-25 21:32:01,958 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 21:32:01,958 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 21:32:01,959 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-25 21:32:01,960 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 21:32:01,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 21:32:01,963 INFO L82 PathProgramCache]: Analyzing trace with hash 1997308302, now seen corresponding path program 1 times [2020-10-25 21:32:01,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 21:32:01,965 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305089930] [2020-10-25 21:32:01,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 21:32:02,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-25 21:32:02,019 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-25 21:32:02,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-25 21:32:02,064 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-25 21:32:02,105 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-25 21:32:02,105 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-25 21:32:02,107 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-25 21:32:02,155 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 09:32:02 BoogieIcfgContainer [2020-10-25 21:32:02,156 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-25 21:32:02,157 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-25 21:32:02,157 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-25 21:32:02,157 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-25 21:32:02,158 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 09:32:01" (3/4) ... [2020-10-25 21:32:02,162 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-25 21:32:02,162 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-25 21:32:02,168 INFO L168 Benchmark]: Toolchain (without parser) took 1785.78 ms. Allocated memory was 41.9 MB in the beginning and 54.5 MB in the end (delta: 12.6 MB). Free memory was 20.0 MB in the beginning and 37.5 MB in the end (delta: -17.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 21:32:02,169 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 41.9 MB. Free memory is still 27.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 21:32:02,171 INFO L168 Benchmark]: CACSL2BoogieTranslator took 352.12 ms. Allocated memory is still 41.9 MB. Free memory was 19.3 MB in the beginning and 20.6 MB in the end (delta: -1.2 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. [2020-10-25 21:32:02,172 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.14 ms. Allocated memory is still 41.9 MB. Free memory was 20.4 MB in the beginning and 18.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 21:32:02,174 INFO L168 Benchmark]: Boogie Preprocessor took 30.63 ms. Allocated memory is still 41.9 MB. Free memory was 18.8 MB in the beginning and 17.7 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 21:32:02,175 INFO L168 Benchmark]: RCFGBuilder took 618.87 ms. Allocated memory is still 54.5 MB. Free memory was 39.8 MB in the beginning and 28.4 MB in the end (delta: 11.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-10-25 21:32:02,176 INFO L168 Benchmark]: TraceAbstraction took 699.91 ms. Allocated memory is still 54.5 MB. Free memory was 27.9 MB in the beginning and 37.8 MB in the end (delta: -9.9 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. [2020-10-25 21:32:02,178 INFO L168 Benchmark]: Witness Printer took 6.03 ms. Allocated memory is still 54.5 MB. Free memory was 37.8 MB in the beginning and 37.5 MB in the end (delta: 302.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 21:32:02,183 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 41.9 MB. Free memory is still 27.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 352.12 ms. Allocated memory is still 41.9 MB. Free memory was 19.3 MB in the beginning and 20.6 MB in the end (delta: -1.2 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 50.14 ms. Allocated memory is still 41.9 MB. Free memory was 20.4 MB in the beginning and 18.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 30.63 ms. Allocated memory is still 41.9 MB. Free memory was 18.8 MB in the beginning and 17.7 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 618.87 ms. Allocated memory is still 54.5 MB. Free memory was 39.8 MB in the beginning and 28.4 MB in the end (delta: 11.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 699.91 ms. Allocated memory is still 54.5 MB. Free memory was 27.9 MB in the beginning and 37.8 MB in the end (delta: -9.9 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. * Witness Printer took 6.03 ms. Allocated memory is still 54.5 MB. Free memory was 37.8 MB in the beginning and 37.5 MB in the end (delta: 302.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 12]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 31, overapproximation of someBinaryDOUBLEComparisonOperation at line 41, overapproximation of someBinaryArithmeticFLOAToperation at line 37. 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); [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; [L35] x = x - f(x)/fp(x) [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; [L37] x = x - f(x)/fp(x) [L41] COND TRUE !(x < 0.1) [L12] COND FALSE !(0) [L12] __assert_fail ("0", "newton_3_8.c", 3, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 18 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: 17 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=18occurred 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, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 144 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-5485861 [2020-10-25 21:32:04,929 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-25 21:32:04,933 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-25 21:32:04,971 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-25 21:32:04,972 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-25 21:32:04,974 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-25 21:32:04,976 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-25 21:32:04,978 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-25 21:32:04,980 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-25 21:32:04,983 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-25 21:32:04,985 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-25 21:32:04,987 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-25 21:32:04,988 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-25 21:32:04,989 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-25 21:32:04,990 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-25 21:32:04,992 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-25 21:32:04,993 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-25 21:32:04,995 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-25 21:32:04,997 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-25 21:32:05,001 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-25 21:32:05,006 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-25 21:32:05,012 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-25 21:32:05,014 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-25 21:32:05,019 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-25 21:32:05,025 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-25 21:32:05,028 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-25 21:32:05,028 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-25 21:32:05,030 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-25 21:32:05,034 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-25 21:32:05,036 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-25 21:32:05,036 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-25 21:32:05,037 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-25 21:32:05,039 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-25 21:32:05,041 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-25 21:32:05,043 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-25 21:32:05,044 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-25 21:32:05,045 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-25 21:32:05,045 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-25 21:32:05,059 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-25 21:32:05,063 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-25 21:32:05,064 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-25 21:32:05,066 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-10-25 21:32:05,125 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-25 21:32:05,126 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-25 21:32:05,128 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-25 21:32:05,130 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-25 21:32:05,131 INFO L138 SettingsManager]: * Use SBE=true [2020-10-25 21:32:05,131 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-25 21:32:05,132 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-25 21:32:05,132 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-25 21:32:05,132 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-25 21:32:05,133 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-25 21:32:05,134 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-25 21:32:05,134 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-25 21:32:05,135 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-25 21:32:05,135 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-25 21:32:05,135 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-25 21:32:05,136 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-25 21:32:05,136 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-25 21:32:05,136 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-25 21:32:05,137 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-25 21:32:05,137 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-25 21:32:05,138 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-25 21:32:05,138 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-25 21:32:05,138 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-25 21:32:05,139 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-25 21:32:05,139 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-25 21:32:05,139 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-25 21:32:05,140 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-25 21:32:05,140 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-25 21:32:05,141 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-25 21:32:05,141 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-25 21:32:05,141 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-25 21:32:05,142 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3e7a5c2d38e9221fb261a8b3d947e8e6a8fda84a [2020-10-25 21:32:05,622 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-25 21:32:05,656 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-25 21:32:05,659 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-25 21:32:05,661 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-25 21:32:05,666 INFO L275 PluginConnector]: CDTParser initialized [2020-10-25 21:32:05,668 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cdfpl/newton_3_8.i [2020-10-25 21:32:05,773 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d7bdef0b/0307a320acb24911b46f06bf7e1dea1b/FLAG728024131 [2020-10-25 21:32:06,356 INFO L306 CDTParser]: Found 1 translation units. [2020-10-25 21:32:06,357 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_3_8.i [2020-10-25 21:32:06,364 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d7bdef0b/0307a320acb24911b46f06bf7e1dea1b/FLAG728024131 [2020-10-25 21:32:06,710 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d7bdef0b/0307a320acb24911b46f06bf7e1dea1b [2020-10-25 21:32:06,714 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-25 21:32:06,722 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-25 21:32:06,725 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-25 21:32:06,725 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-25 21:32:06,729 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-25 21:32:06,731 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 09:32:06" (1/1) ... [2020-10-25 21:32:06,739 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5322951 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:32:06, skipping insertion in model container [2020-10-25 21:32:06,740 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 09:32:06" (1/1) ... [2020-10-25 21:32:06,749 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-25 21:32:06,767 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-25 21:32:07,081 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 21:32:07,107 INFO L203 MainTranslator]: Completed pre-run [2020-10-25 21:32:07,159 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 21:32:07,197 INFO L208 MainTranslator]: Completed translation [2020-10-25 21:32:07,198 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:32:07 WrapperNode [2020-10-25 21:32:07,198 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-25 21:32:07,201 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-25 21:32:07,201 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-25 21:32:07,204 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-25 21:32:07,217 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:32:07" (1/1) ... [2020-10-25 21:32:07,248 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:32:07" (1/1) ... [2020-10-25 21:32:07,294 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-25 21:32:07,296 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-25 21:32:07,296 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-25 21:32:07,297 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-25 21:32:07,308 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:32:07" (1/1) ... [2020-10-25 21:32:07,309 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:32:07" (1/1) ... [2020-10-25 21:32:07,328 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:32:07" (1/1) ... [2020-10-25 21:32:07,331 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:32:07" (1/1) ... [2020-10-25 21:32:07,344 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:32:07" (1/1) ... [2020-10-25 21:32:07,347 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:32:07" (1/1) ... [2020-10-25 21:32:07,351 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:32:07" (1/1) ... [2020-10-25 21:32:07,355 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-25 21:32:07,357 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-25 21:32:07,357 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-25 21:32:07,357 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-25 21:32:07,358 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:32:07" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-25 21:32:07,445 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-25 21:32:07,445 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-25 21:32:07,445 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-25 21:32:07,446 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-25 21:32:27,706 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-25 21:32:27,707 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-10-25 21:32:27,709 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 09:32:27 BoogieIcfgContainer [2020-10-25 21:32:27,709 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-25 21:32:27,711 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-25 21:32:27,711 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-25 21:32:27,715 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-25 21:32:27,715 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 09:32:06" (1/3) ... [2020-10-25 21:32:27,716 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f8c9715 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 09:32:27, skipping insertion in model container [2020-10-25 21:32:27,717 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:32:07" (2/3) ... [2020-10-25 21:32:27,717 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f8c9715 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 09:32:27, skipping insertion in model container [2020-10-25 21:32:27,717 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 09:32:27" (3/3) ... [2020-10-25 21:32:27,719 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_3_8.i [2020-10-25 21:32:27,733 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-25 21:32:27,739 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-25 21:32:27,754 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-25 21:32:27,783 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-25 21:32:27,784 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-25 21:32:27,784 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-25 21:32:27,784 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-25 21:32:27,785 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-25 21:32:27,785 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-25 21:32:27,785 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-25 21:32:27,785 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-25 21:32:27,800 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2020-10-25 21:32:27,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-25 21:32:27,807 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 21:32:27,808 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 21:32:27,809 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 21:32:27,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 21:32:27,816 INFO L82 PathProgramCache]: Analyzing trace with hash 1296243724, now seen corresponding path program 1 times [2020-10-25 21:32:27,831 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-25 21:32:27,832 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1515403156] [2020-10-25 21:32:27,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-10-25 21:32:31,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 21:32:31,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 1 conjunts are in the unsatisfiable core [2020-10-25 21:32:31,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 21:32:31,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 21:32:31,503 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-25 21:32:31,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 21:32:31,510 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1515403156] [2020-10-25 21:32:31,511 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-25 21:32:31,512 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-25 21:32:31,513 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642249838] [2020-10-25 21:32:31,518 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-25 21:32:31,518 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-25 21:32:31,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-25 21:32:31,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-25 21:32:31,536 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 2 states. [2020-10-25 21:32:31,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 21:32:31,553 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2020-10-25 21:32:31,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-25 21:32:31,555 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-10-25 21:32:31,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 21:32:31,565 INFO L225 Difference]: With dead ends: 33 [2020-10-25 21:32:31,565 INFO L226 Difference]: Without dead ends: 14 [2020-10-25 21:32:31,569 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-25 21:32:31,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-10-25 21:32:31,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-10-25 21:32:31,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-10-25 21:32:31,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 13 transitions. [2020-10-25 21:32:31,608 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 13 transitions. Word has length 13 [2020-10-25 21:32:31,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 21:32:31,609 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 13 transitions. [2020-10-25 21:32:31,609 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-25 21:32:31,609 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 13 transitions. [2020-10-25 21:32:31,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-25 21:32:31,610 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 21:32:31,610 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 21:32:31,824 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-25 21:32:31,825 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 21:32:31,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 21:32:31,828 INFO L82 PathProgramCache]: Analyzing trace with hash 1997308302, now seen corresponding path program 1 times [2020-10-25 21:32:31,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-25 21:32:31,829 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1600445458] [2020-10-25 21:32:31,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-10-25 21:32:54,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-25 21:32:54,644 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-25 21:33:18,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-25 21:33:18,230 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-25 21:33:18,544 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-10-25 21:33:18,545 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-25 21:33:18,746 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-25 21:33:18,782 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 09:33:18 BoogieIcfgContainer [2020-10-25 21:33:18,782 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-25 21:33:18,783 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-25 21:33:18,783 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-25 21:33:18,783 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-25 21:33:18,784 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 09:32:27" (3/4) ... [2020-10-25 21:33:18,786 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-25 21:33:18,837 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-25 21:33:18,837 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-25 21:33:18,840 INFO L168 Benchmark]: Toolchain (without parser) took 72122.74 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 28.4 MB in the beginning and 34.1 MB in the end (delta: -5.8 MB). Peak memory consumption was 6.2 MB. Max. memory is 16.1 GB. [2020-10-25 21:33:18,841 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 35.7 MB. Free memory was 18.4 MB in the beginning and 18.3 MB in the end (delta: 31.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 21:33:18,842 INFO L168 Benchmark]: CACSL2BoogieTranslator took 474.10 ms. Allocated memory is still 50.3 MB. Free memory was 27.8 MB in the beginning and 30.5 MB in the end (delta: -2.7 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. [2020-10-25 21:33:18,843 INFO L168 Benchmark]: Boogie Procedure Inliner took 94.14 ms. Allocated memory is still 50.3 MB. Free memory was 30.5 MB in the beginning and 28.6 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 21:33:18,844 INFO L168 Benchmark]: Boogie Preprocessor took 59.59 ms. Allocated memory is still 50.3 MB. Free memory was 28.6 MB in the beginning and 27.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 21:33:18,845 INFO L168 Benchmark]: RCFGBuilder took 20352.32 ms. Allocated memory is still 50.3 MB. Free memory was 27.1 MB in the beginning and 27.0 MB in the end (delta: 136.8 kB). Peak memory consumption was 10.0 MB. Max. memory is 16.1 GB. [2020-10-25 21:33:18,846 INFO L168 Benchmark]: TraceAbstraction took 51071.47 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 26.5 MB in the beginning and 36.2 MB in the end (delta: -9.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 21:33:18,846 INFO L168 Benchmark]: Witness Printer took 54.40 ms. Allocated memory is still 60.8 MB. Free memory was 36.2 MB in the beginning and 34.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 21:33:18,852 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 35.7 MB. Free memory was 18.4 MB in the beginning and 18.3 MB in the end (delta: 31.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 474.10 ms. Allocated memory is still 50.3 MB. Free memory was 27.8 MB in the beginning and 30.5 MB in the end (delta: -2.7 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 94.14 ms. Allocated memory is still 50.3 MB. Free memory was 30.5 MB in the beginning and 28.6 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 59.59 ms. Allocated memory is still 50.3 MB. Free memory was 28.6 MB in the beginning and 27.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 20352.32 ms. Allocated memory is still 50.3 MB. Free memory was 27.1 MB in the beginning and 27.0 MB in the end (delta: 136.8 kB). Peak memory consumption was 10.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 51071.47 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 26.5 MB in the beginning and 36.2 MB in the end (delta: -9.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 54.40 ms. Allocated memory is still 60.8 MB. Free memory was 36.2 MB in the beginning and 34.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 12]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L30] float IN = __VERIFIER_nondet_float(); [L15] COND FALSE !(!cond) [L20] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L25] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L33] float x = IN - f(IN)/fp(IN); [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; [L35] x = x - f(x)/fp(x) [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; [L37] x = x - f(x)/fp(x) [L41] COND TRUE !(x < 0.1) [L12] COND FALSE !(0) [L12] __assert_fail ("0", "newton_3_8.c", 3, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 50.9s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 17 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred 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, 26.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 288 SizeOfPredicates, 0 NumberOfNonLiveVariables, 49 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! [MP z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process Received shutdown request...