./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/floats-cdfpl/newton_1_4.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc 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_1_4.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 90741c14eee92622488e9390ec37eb8bb78b90b3 ............................................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/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_1_4.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 90741c14eee92622488e9390ec37eb8bb78b90b3 ........................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-10-24 21:27:21,760 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 21:27:21,763 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 21:27:21,797 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-24 21:27:21,798 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-24 21:27:21,799 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-24 21:27:21,801 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-24 21:27:21,804 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-24 21:27:21,806 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-24 21:27:21,808 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-24 21:27:21,810 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-24 21:27:21,811 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-24 21:27:21,812 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 21:27:21,813 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 21:27:21,815 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 21:27:21,817 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 21:27:21,818 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 21:27:21,819 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 21:27:21,821 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 21:27:21,824 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 21:27:21,826 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 21:27:21,830 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 21:27:21,834 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 21:27:21,835 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 21:27:21,839 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-24 21:27:21,843 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-24 21:27:21,846 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-24 21:27:21,847 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-24 21:27:21,848 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-24 21:27:21,852 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-24 21:27:21,852 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-24 21:27:21,853 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-24 21:27:21,855 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-24 21:27:21,859 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-24 21:27:21,860 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-24 21:27:21,862 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-24 21:27:21,863 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-24 21:27:21,865 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-24 21:27:21,865 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 21:27:21,866 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 21:27:21,868 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 21:27:21,869 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-24 21:27:21,925 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 21:27:21,926 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 21:27:21,929 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-24 21:27:21,930 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-24 21:27:21,930 INFO L138 SettingsManager]: * Use SBE=true [2020-10-24 21:27:21,930 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 21:27:21,931 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 21:27:21,931 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-24 21:27:21,931 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 21:27:21,932 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 21:27:21,933 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 21:27:21,933 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 21:27:21,933 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 21:27:21,934 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 21:27:21,934 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 21:27:21,934 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 21:27:21,934 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 21:27:21,935 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 21:27:21,935 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-24 21:27:21,935 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 21:27:21,936 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 21:27:21,936 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 21:27:21,936 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 21:27:21,936 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-24 21:27:21,937 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-24 21:27:21,937 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-24 21:27:21,937 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-24 21:27:21,937 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 21:27:21,938 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-24 21:27:21,938 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 90741c14eee92622488e9390ec37eb8bb78b90b3 [2020-10-24 21:27:22,364 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 21:27:22,393 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 21:27:22,397 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 21:27:22,399 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 21:27:22,400 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 21:27:22,401 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cdfpl/newton_1_4.i [2020-10-24 21:27:22,475 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a148fd945/6fc126c9f55a491c9b8af628b27eee56/FLAGe482e8c2d [2020-10-24 21:27:23,117 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 21:27:23,118 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_1_4.i [2020-10-24 21:27:23,129 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a148fd945/6fc126c9f55a491c9b8af628b27eee56/FLAGe482e8c2d [2020-10-24 21:27:23,450 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a148fd945/6fc126c9f55a491c9b8af628b27eee56 [2020-10-24 21:27:23,454 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 21:27:23,460 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-24 21:27:23,463 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 21:27:23,463 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 21:27:23,467 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 21:27:23,468 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:27:23" (1/1) ... [2020-10-24 21:27:23,471 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ba2461d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:27:23, skipping insertion in model container [2020-10-24 21:27:23,471 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:27:23" (1/1) ... [2020-10-24 21:27:23,480 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 21:27:23,498 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-24 21:27:23,724 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 21:27:23,741 INFO L203 MainTranslator]: Completed pre-run [2020-10-24 21:27:23,782 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 21:27:23,808 INFO L208 MainTranslator]: Completed translation [2020-10-24 21:27:23,810 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:27:23 WrapperNode [2020-10-24 21:27:23,810 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 21:27:23,812 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-24 21:27:23,812 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-24 21:27:23,813 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-24 21:27:23,823 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:27:23" (1/1) ... [2020-10-24 21:27:23,837 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:27:23" (1/1) ... [2020-10-24 21:27:23,865 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-24 21:27:23,867 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 21:27:23,867 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 21:27:23,868 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 21:27:23,879 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:27:23" (1/1) ... [2020-10-24 21:27:23,879 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:27:23" (1/1) ... [2020-10-24 21:27:23,891 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:27:23" (1/1) ... [2020-10-24 21:27:23,892 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:27:23" (1/1) ... [2020-10-24 21:27:23,903 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:27:23" (1/1) ... [2020-10-24 21:27:23,913 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:27:23" (1/1) ... [2020-10-24 21:27:23,917 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:27:23" (1/1) ... [2020-10-24 21:27:23,920 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 21:27:23,923 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 21:27:23,924 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 21:27:23,924 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 21:27:23,926 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:27:23" (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 [2020-10-24 21:27:24,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-24 21:27:24,021 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 21:27:24,021 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 21:27:24,021 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 21:27:24,242 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 21:27:24,242 INFO L298 CfgBuilder]: Removed 12 assume(true) statements. [2020-10-24 21:27:24,244 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:27:24 BoogieIcfgContainer [2020-10-24 21:27:24,245 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 21:27:24,247 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 21:27:24,247 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 21:27:24,260 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 21:27:24,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:27:23" (1/3) ... [2020-10-24 21:27:24,262 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@175ead8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:27:24, skipping insertion in model container [2020-10-24 21:27:24,262 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:27:23" (2/3) ... [2020-10-24 21:27:24,262 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@175ead8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:27:24, skipping insertion in model container [2020-10-24 21:27:24,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:27:24" (3/3) ... [2020-10-24 21:27:24,265 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_1_4.i [2020-10-24 21:27:24,299 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-24 21:27:24,314 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 21:27:24,354 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 21:27:24,397 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 21:27:24,397 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 21:27:24,397 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-24 21:27:24,398 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 21:27:24,398 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 21:27:24,398 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 21:27:24,398 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 21:27:24,399 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 21:27:24,420 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2020-10-24 21:27:24,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-24 21:27:24,427 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 21:27:24,428 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 21:27:24,429 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 21:27:24,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 21:27:24,439 INFO L82 PathProgramCache]: Analyzing trace with hash -595084600, now seen corresponding path program 1 times [2020-10-24 21:27:24,451 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 21:27:24,452 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318718998] [2020-10-24 21:27:24,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 21:27:24,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 21:27:24,629 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 21:27:24,630 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318718998] [2020-10-24 21:27:24,631 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 21:27:24,631 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-24 21:27:24,632 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661672324] [2020-10-24 21:27:24,637 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-24 21:27:24,638 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-24 21:27:24,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-24 21:27:24,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-24 21:27:24,657 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 2 states. [2020-10-24 21:27:24,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 21:27:24,675 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2020-10-24 21:27:24,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-24 21:27:24,677 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2020-10-24 21:27:24,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 21:27:24,689 INFO L225 Difference]: With dead ends: 25 [2020-10-24 21:27:24,689 INFO L226 Difference]: Without dead ends: 10 [2020-10-24 21:27:24,693 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 21:27:24,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-10-24 21:27:24,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2020-10-24 21:27:24,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-10-24 21:27:24,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 9 transitions. [2020-10-24 21:27:24,732 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 9 transitions. Word has length 9 [2020-10-24 21:27:24,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 21:27:24,733 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 9 transitions. [2020-10-24 21:27:24,733 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-24 21:27:24,733 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 9 transitions. [2020-10-24 21:27:24,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-24 21:27:24,734 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 21:27:24,734 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 21:27:24,735 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-24 21:27:24,735 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 21:27:24,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 21:27:24,737 INFO L82 PathProgramCache]: Analyzing trace with hash 1179922762, now seen corresponding path program 1 times [2020-10-24 21:27:24,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 21:27:24,738 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462402810] [2020-10-24 21:27:24,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 21:27:24,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 21:27:24,769 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 21:27:24,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 21:27:24,817 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 21:27:24,858 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-24 21:27:24,858 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-24 21:27:24,861 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-24 21:27:24,900 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 09:27:24 BoogieIcfgContainer [2020-10-24 21:27:24,901 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 21:27:24,902 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-24 21:27:24,903 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-24 21:27:24,903 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-24 21:27:24,904 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:27:24" (3/4) ... [2020-10-24 21:27:24,909 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-24 21:27:24,910 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-24 21:27:24,916 INFO L168 Benchmark]: Toolchain (without parser) took 1455.60 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 23.4 MB in the beginning and 39.1 MB in the end (delta: -15.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 21:27:24,917 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 46.1 MB. Free memory was 31.2 MB in the beginning and 31.1 MB in the end (delta: 69.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 21:27:24,919 INFO L168 Benchmark]: CACSL2BoogieTranslator took 348.20 ms. Allocated memory is still 46.1 MB. Free memory was 22.8 MB in the beginning and 24.0 MB in the end (delta: -1.2 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. [2020-10-24 21:27:24,921 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.14 ms. Allocated memory is still 46.1 MB. Free memory was 24.0 MB in the beginning and 22.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 21:27:24,922 INFO L168 Benchmark]: Boogie Preprocessor took 55.21 ms. Allocated memory is still 46.1 MB. Free memory was 22.5 MB in the beginning and 21.4 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 21:27:24,924 INFO L168 Benchmark]: RCFGBuilder took 321.80 ms. Allocated memory is still 46.1 MB. Free memory was 21.4 MB in the beginning and 22.4 MB in the end (delta: -947.5 kB). Peak memory consumption was 7.4 MB. Max. memory is 16.1 GB. [2020-10-24 21:27:24,925 INFO L168 Benchmark]: TraceAbstraction took 654.86 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 21.9 MB in the beginning and 39.4 MB in the end (delta: -17.5 MB). Peak memory consumption was 7.0 MB. Max. memory is 16.1 GB. [2020-10-24 21:27:24,926 INFO L168 Benchmark]: Witness Printer took 7.70 ms. Allocated memory is still 56.6 MB. Free memory was 39.4 MB in the beginning and 39.1 MB in the end (delta: 335.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 21:27:24,944 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 46.1 MB. Free memory was 31.2 MB in the beginning and 31.1 MB in the end (delta: 69.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 348.20 ms. Allocated memory is still 46.1 MB. Free memory was 22.8 MB in the beginning and 24.0 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 53.14 ms. Allocated memory is still 46.1 MB. Free memory was 24.0 MB in the beginning and 22.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 55.21 ms. Allocated memory is still 46.1 MB. Free memory was 22.5 MB in the beginning and 21.4 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 321.80 ms. Allocated memory is still 46.1 MB. Free memory was 21.4 MB in the beginning and 22.4 MB in the end (delta: -947.5 kB). Peak memory consumption was 7.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 654.86 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 21.9 MB in the beginning and 39.4 MB in the end (delta: -17.5 MB). Peak memory consumption was 7.0 MB. Max. memory is 16.1 GB. * Witness Printer took 7.70 ms. Allocated memory is still 56.6 MB. Free memory was 39.4 MB in the beginning and 39.1 MB in the end (delta: 335.4 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 33. Possible FailurePath: [L30] float IN = __VERIFIER_nondet_float(); [L15] COND FALSE !(!cond) [L20] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L25] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L33] float x = IN - f(IN)/fp(IN); [L41] COND TRUE !(x < 0.1) [L12] COND FALSE !(0) [L12] __assert_fail ("0", "newton_1_4.c", 3, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.4s, 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-a4ecdab [2020-10-24 21:27:27,570 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 21:27:27,573 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 21:27:27,616 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-24 21:27:27,617 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-24 21:27:27,618 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-24 21:27:27,620 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-24 21:27:27,623 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-24 21:27:27,625 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-24 21:27:27,626 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-24 21:27:27,628 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-24 21:27:27,629 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-24 21:27:27,630 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 21:27:27,631 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 21:27:27,633 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 21:27:27,635 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 21:27:27,636 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 21:27:27,637 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 21:27:27,639 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 21:27:27,642 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 21:27:27,644 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 21:27:27,645 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 21:27:27,647 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 21:27:27,648 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 21:27:27,651 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-24 21:27:27,652 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-24 21:27:27,652 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-24 21:27:27,654 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-24 21:27:27,654 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-24 21:27:27,656 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-24 21:27:27,656 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-24 21:27:27,657 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-24 21:27:27,658 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-24 21:27:27,659 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-24 21:27:27,661 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-24 21:27:27,662 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-24 21:27:27,663 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-24 21:27:27,663 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-24 21:27:27,664 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 21:27:27,665 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 21:27:27,666 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 21:27:27,667 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-10-24 21:27:27,703 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 21:27:27,703 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 21:27:27,705 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-24 21:27:27,705 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-24 21:27:27,706 INFO L138 SettingsManager]: * Use SBE=true [2020-10-24 21:27:27,706 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 21:27:27,706 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 21:27:27,706 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 21:27:27,707 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 21:27:27,707 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 21:27:27,707 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 21:27:27,707 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 21:27:27,708 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-24 21:27:27,708 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-24 21:27:27,708 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 21:27:27,708 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 21:27:27,709 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 21:27:27,709 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 21:27:27,709 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 21:27:27,709 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-24 21:27:27,710 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 21:27:27,710 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 21:27:27,710 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 21:27:27,710 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 21:27:27,710 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-24 21:27:27,711 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-24 21:27:27,711 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-24 21:27:27,711 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-24 21:27:27,711 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 21:27:27,711 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-24 21:27:27,712 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-24 21:27:27,712 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 90741c14eee92622488e9390ec37eb8bb78b90b3 [2020-10-24 21:27:28,151 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 21:27:28,181 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 21:27:28,184 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 21:27:28,186 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 21:27:28,186 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 21:27:28,187 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cdfpl/newton_1_4.i [2020-10-24 21:27:28,272 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc6429284/c157dbd464bd4d61ae08b59035c9a7b2/FLAG216d53e32 [2020-10-24 21:27:28,902 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 21:27:28,902 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_1_4.i [2020-10-24 21:27:28,910 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc6429284/c157dbd464bd4d61ae08b59035c9a7b2/FLAG216d53e32 [2020-10-24 21:27:29,271 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc6429284/c157dbd464bd4d61ae08b59035c9a7b2 [2020-10-24 21:27:29,278 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 21:27:29,286 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-24 21:27:29,291 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 21:27:29,291 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 21:27:29,296 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 21:27:29,297 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:27:29" (1/1) ... [2020-10-24 21:27:29,303 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@281cbccc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:27:29, skipping insertion in model container [2020-10-24 21:27:29,313 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:27:29" (1/1) ... [2020-10-24 21:27:29,345 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 21:27:29,400 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-24 21:27:29,590 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 21:27:29,605 INFO L203 MainTranslator]: Completed pre-run [2020-10-24 21:27:29,628 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 21:27:29,646 INFO L208 MainTranslator]: Completed translation [2020-10-24 21:27:29,646 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:27:29 WrapperNode [2020-10-24 21:27:29,647 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 21:27:29,648 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-24 21:27:29,648 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-24 21:27:29,648 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-24 21:27:29,665 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:27:29" (1/1) ... [2020-10-24 21:27:29,675 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:27:29" (1/1) ... [2020-10-24 21:27:29,699 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-24 21:27:29,700 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 21:27:29,701 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 21:27:29,701 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 21:27:29,711 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:27:29" (1/1) ... [2020-10-24 21:27:29,711 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:27:29" (1/1) ... [2020-10-24 21:27:29,715 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:27:29" (1/1) ... [2020-10-24 21:27:29,716 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:27:29" (1/1) ... [2020-10-24 21:27:29,725 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:27:29" (1/1) ... [2020-10-24 21:27:29,727 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:27:29" (1/1) ... [2020-10-24 21:27:29,729 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:27:29" (1/1) ... [2020-10-24 21:27:29,733 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 21:27:29,734 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 21:27:29,734 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 21:27:29,734 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 21:27:29,735 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:27:29" (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 [2020-10-24 21:27:29,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-24 21:27:29,825 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 21:27:29,825 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 21:27:29,825 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 21:27:37,268 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 21:27:37,268 INFO L298 CfgBuilder]: Removed 12 assume(true) statements. [2020-10-24 21:27:37,270 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:27:37 BoogieIcfgContainer [2020-10-24 21:27:37,270 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 21:27:37,272 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 21:27:37,273 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 21:27:37,283 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 21:27:37,284 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:27:29" (1/3) ... [2020-10-24 21:27:37,285 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72f95ca7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:27:37, skipping insertion in model container [2020-10-24 21:27:37,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:27:29" (2/3) ... [2020-10-24 21:27:37,286 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72f95ca7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:27:37, skipping insertion in model container [2020-10-24 21:27:37,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:27:37" (3/3) ... [2020-10-24 21:27:37,288 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_1_4.i [2020-10-24 21:27:37,301 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-24 21:27:37,307 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 21:27:37,322 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 21:27:37,363 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 21:27:37,363 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 21:27:37,363 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-24 21:27:37,364 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 21:27:37,364 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 21:27:37,364 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 21:27:37,364 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 21:27:37,365 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 21:27:37,379 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2020-10-24 21:27:37,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-24 21:27:37,385 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 21:27:37,386 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 21:27:37,386 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 21:27:37,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 21:27:37,395 INFO L82 PathProgramCache]: Analyzing trace with hash -595084600, now seen corresponding path program 1 times [2020-10-24 21:27:37,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 21:27:37,411 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1513057571] [2020-10-24 21:27:37,412 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 [2020-10-24 21:27:38,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 21:27:38,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 1 conjunts are in the unsatisfiable core [2020-10-24 21:27:38,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 21:27:38,811 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 21:27:38,811 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 21:27:38,819 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 21:27:38,821 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1513057571] [2020-10-24 21:27:38,822 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 21:27:38,823 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-24 21:27:38,824 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871519000] [2020-10-24 21:27:38,829 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-24 21:27:38,830 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 21:27:38,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-24 21:27:38,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-24 21:27:38,853 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 2 states. [2020-10-24 21:27:38,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 21:27:38,868 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2020-10-24 21:27:38,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-24 21:27:38,869 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2020-10-24 21:27:38,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 21:27:38,877 INFO L225 Difference]: With dead ends: 25 [2020-10-24 21:27:38,878 INFO L226 Difference]: Without dead ends: 10 [2020-10-24 21:27:38,881 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 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 21:27:38,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-10-24 21:27:38,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2020-10-24 21:27:38,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-10-24 21:27:38,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 9 transitions. [2020-10-24 21:27:38,918 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 9 transitions. Word has length 9 [2020-10-24 21:27:38,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 21:27:38,924 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 9 transitions. [2020-10-24 21:27:38,925 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-24 21:27:38,925 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 9 transitions. [2020-10-24 21:27:38,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-24 21:27:38,926 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 21:27:38,926 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 21:27:39,140 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-24 21:27:39,141 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 21:27:39,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 21:27:39,143 INFO L82 PathProgramCache]: Analyzing trace with hash 1179922762, now seen corresponding path program 1 times [2020-10-24 21:27:39,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 21:27:39,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1034521801] [2020-10-24 21:27:39,145 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 [2020-10-24 21:30:35,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 21:30:35,228 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 21:30:39,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 21:30:39,453 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 21:30:39,573 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-10-24 21:30:39,573 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-24 21:30:39,775 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-24 21:30:39,804 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 09:30:39 BoogieIcfgContainer [2020-10-24 21:30:39,805 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 21:30:39,806 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-24 21:30:39,806 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-24 21:30:39,806 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-24 21:30:39,807 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:27:37" (3/4) ... [2020-10-24 21:30:39,809 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-24 21:30:39,849 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-24 21:30:39,850 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-24 21:30:39,852 INFO L168 Benchmark]: Toolchain (without parser) took 190571.39 ms. Allocated memory was 41.9 MB in the beginning and 52.4 MB in the end (delta: 10.5 MB). Free memory was 19.1 MB in the beginning and 24.1 MB in the end (delta: -5.0 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. [2020-10-24 21:30:39,853 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 41.9 MB. Free memory is still 24.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 21:30:39,854 INFO L168 Benchmark]: CACSL2BoogieTranslator took 356.01 ms. Allocated memory is still 41.9 MB. Free memory was 18.4 MB in the beginning and 17.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 3.2 MB. Max. memory is 16.1 GB. [2020-10-24 21:30:39,855 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.65 ms. Allocated memory was 41.9 MB in the beginning and 52.4 MB in the end (delta: 10.5 MB). Free memory was 17.2 MB in the beginning and 35.9 MB in the end (delta: -18.7 MB). Peak memory consumption was 4.8 MB. Max. memory is 16.1 GB. [2020-10-24 21:30:39,856 INFO L168 Benchmark]: Boogie Preprocessor took 32.75 ms. Allocated memory is still 52.4 MB. Free memory was 35.9 MB in the beginning and 34.7 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 21:30:39,857 INFO L168 Benchmark]: RCFGBuilder took 7536.68 ms. Allocated memory is still 52.4 MB. Free memory was 34.7 MB in the beginning and 23.2 MB in the end (delta: 11.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-10-24 21:30:39,858 INFO L168 Benchmark]: TraceAbstraction took 182532.79 ms. Allocated memory is still 52.4 MB. Free memory was 22.7 MB in the beginning and 26.1 MB in the end (delta: -3.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 21:30:39,858 INFO L168 Benchmark]: Witness Printer took 44.21 ms. Allocated memory is still 52.4 MB. Free memory was 26.1 MB in the beginning and 24.1 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 21:30:39,863 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 41.9 MB. Free memory is still 24.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 356.01 ms. Allocated memory is still 41.9 MB. Free memory was 18.4 MB in the beginning and 17.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 3.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 51.65 ms. Allocated memory was 41.9 MB in the beginning and 52.4 MB in the end (delta: 10.5 MB). Free memory was 17.2 MB in the beginning and 35.9 MB in the end (delta: -18.7 MB). Peak memory consumption was 4.8 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 32.75 ms. Allocated memory is still 52.4 MB. Free memory was 35.9 MB in the beginning and 34.7 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 7536.68 ms. Allocated memory is still 52.4 MB. Free memory was 34.7 MB in the beginning and 23.2 MB in the end (delta: 11.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 182532.79 ms. Allocated memory is still 52.4 MB. Free memory was 22.7 MB in the beginning and 26.1 MB in the end (delta: -3.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 44.21 ms. Allocated memory is still 52.4 MB. Free memory was 26.1 MB in the beginning and 24.1 MB in the end (delta: 1.9 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); [L41] COND TRUE !(x < 0.1) [L12] COND FALSE !(0) [L12] __assert_fail ("0", "newton_1_4.c", 3, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 182.4s, 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, 16 GetRequests, 16 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, 177.2s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 128 SizeOfPredicates, 0 NumberOfNonLiveVariables, 33 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...