./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/floats-cdfpl/newton_1_5.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_5.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 d9c72214a613f4a26e1c80cbce806993eed5c352 ............................................................................................................................................................................................................................................................................ 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_5.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 d9c72214a613f4a26e1c80cbce806993eed5c352 ........................................................................................................................................................................................................................................................................................ 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 21:27:21,709 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 21:27:21,713 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 21:27:21,772 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-24 21:27:21,773 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-24 21:27:21,778 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-24 21:27:21,782 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-24 21:27:21,789 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-24 21:27:21,796 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-24 21:27:21,802 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-24 21:27:21,804 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-24 21:27:21,806 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-24 21:27:21,807 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 21:27:21,810 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 21:27:21,812 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 21:27:21,814 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 21:27:21,816 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 21:27:21,820 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 21:27:21,827 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 21:27:21,835 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 21:27:21,839 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 21:27:21,842 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 21:27:21,844 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 21:27:21,846 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 21:27:21,856 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-24 21:27:21,857 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-24 21:27:21,857 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-24 21:27:21,860 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-24 21:27:21,861 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-24 21:27:21,862 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-24 21:27:21,862 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-24 21:27:21,864 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-24 21:27:21,866 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-24 21:27:21,867 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-24 21:27:21,868 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-24 21:27:21,869 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-24 21:27:21,872 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-24 21:27:21,873 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-24 21:27:21,873 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 21:27:21,876 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 21:27:21,877 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 21:27:21,878 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-24 21:27:21,937 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 21:27:21,938 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 21:27:21,941 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-24 21:27:21,942 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-24 21:27:21,942 INFO L138 SettingsManager]: * Use SBE=true [2020-10-24 21:27:21,943 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 21:27:21,943 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 21:27:21,943 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-24 21:27:21,944 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 21:27:21,944 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 21:27:21,945 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 21:27:21,946 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 21:27:21,946 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 21:27:21,946 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 21:27:21,946 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 21:27:21,947 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 21:27:21,947 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 21:27:21,947 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 21:27:21,948 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-24 21:27:21,948 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 21:27:21,948 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 21:27:21,949 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 21:27:21,949 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 21:27:21,949 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-24 21:27:21,950 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-24 21:27:21,950 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-24 21:27:21,950 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-24 21:27:21,950 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 21:27:21,951 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-24 21:27:21,951 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d9c72214a613f4a26e1c80cbce806993eed5c352 [2020-10-24 21:27:22,408 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 21:27:22,458 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 21:27:22,462 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 21:27:22,463 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 21:27:22,465 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 21:27:22,466 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cdfpl/newton_1_5.i [2020-10-24 21:27:22,547 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/160b99019/1dedd5214df947cab497e9c7782f9a21/FLAG8ddba71a8 [2020-10-24 21:27:23,295 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 21:27:23,296 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_1_5.i [2020-10-24 21:27:23,304 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/160b99019/1dedd5214df947cab497e9c7782f9a21/FLAG8ddba71a8 [2020-10-24 21:27:23,650 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/160b99019/1dedd5214df947cab497e9c7782f9a21 [2020-10-24 21:27:23,653 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 21:27:23,660 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-24 21:27:23,662 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 21:27:23,662 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 21:27:23,666 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 21:27:23,667 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:27:23" (1/1) ... [2020-10-24 21:27:23,686 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69f92327 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 21:27:23,691 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:27:23" (1/1) ... [2020-10-24 21:27:23,706 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 21:27:23,743 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-24 21:27:23,918 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 21:27:23,928 INFO L203 MainTranslator]: Completed pre-run [2020-10-24 21:27:23,950 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 21:27:23,968 INFO L208 MainTranslator]: Completed translation [2020-10-24 21:27:23,969 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:27:23 WrapperNode [2020-10-24 21:27:23,969 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 21:27:23,970 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-24 21:27:23,971 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-24 21:27:23,971 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-24 21:27:23,980 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 21:27:23,989 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 21:27:24,011 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-24 21:27:24,012 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 21:27:24,012 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 21:27:24,013 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 21:27:24,022 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 21:27:24,023 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 21:27:24,025 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 21:27:24,025 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 21:27:24,030 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 21:27:24,033 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 21:27:24,034 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 21:27:24,037 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 21:27:24,038 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 21:27:24,038 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 21:27:24,038 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 21:27:24,039 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 21:27:24,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-24 21:27:24,133 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 21:27:24,133 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 21:27:24,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 21:27:24,347 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 21:27:24,348 INFO L298 CfgBuilder]: Removed 12 assume(true) statements. [2020-10-24 21:27:24,349 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:27:24 BoogieIcfgContainer [2020-10-24 21:27:24,350 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 21:27:24,353 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 21:27:24,353 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 21:27:24,357 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 21:27:24,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:27:23" (1/3) ... [2020-10-24 21:27:24,359 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7236be62 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 21:27:24,359 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 21:27:24,360 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7236be62 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 21:27:24,360 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 21:27:24,362 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_1_5.i [2020-10-24 21:27:24,377 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-24 21:27:24,382 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 21:27:24,400 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 21:27:24,432 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 21:27:24,432 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 21:27:24,432 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-24 21:27:24,433 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 21:27:24,433 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 21:27:24,433 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 21:27:24,433 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 21:27:24,434 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 21:27:24,449 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2020-10-24 21:27:24,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-24 21:27:24,456 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 21:27:24,457 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 21:27:24,458 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 21:27:24,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 21:27:24,466 INFO L82 PathProgramCache]: Analyzing trace with hash -595084600, now seen corresponding path program 1 times [2020-10-24 21:27:24,477 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 21:27:24,478 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367036609] [2020-10-24 21:27:24,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 21:27:24,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 21:27:24,653 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 21:27:24,654 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367036609] [2020-10-24 21:27:24,655 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 21:27:24,656 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-24 21:27:24,657 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927172009] [2020-10-24 21:27:24,663 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-24 21:27:24,664 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-24 21:27:24,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-24 21:27:24,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-24 21:27:24,686 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 2 states. [2020-10-24 21:27:24,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 21:27:24,708 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2020-10-24 21:27:24,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-24 21:27:24,710 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2020-10-24 21:27:24,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 21:27:24,721 INFO L225 Difference]: With dead ends: 25 [2020-10-24 21:27:24,721 INFO L226 Difference]: Without dead ends: 10 [2020-10-24 21:27:24,725 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 21:27:24,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-10-24 21:27:24,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2020-10-24 21:27:24,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-10-24 21:27:24,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 9 transitions. [2020-10-24 21:27:24,768 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 9 transitions. Word has length 9 [2020-10-24 21:27:24,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 21:27:24,768 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 9 transitions. [2020-10-24 21:27:24,769 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-24 21:27:24,769 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 9 transitions. [2020-10-24 21:27:24,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-24 21:27:24,770 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 21:27:24,770 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 21:27:24,770 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-24 21:27:24,771 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 21:27:24,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 21:27:24,772 INFO L82 PathProgramCache]: Analyzing trace with hash 1179922762, now seen corresponding path program 1 times [2020-10-24 21:27:24,772 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 21:27:24,773 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943505083] [2020-10-24 21:27:24,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 21:27:24,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 21:27:24,796 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 21:27:24,815 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 21:27:24,842 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-24 21:27:24,842 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-24 21:27:24,844 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-24 21:27:24,871 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 09:27:24 BoogieIcfgContainer [2020-10-24 21:27:24,871 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 21:27:24,872 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-24 21:27:24,873 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-24 21:27:24,873 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-24 21:27:24,874 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 21:27:24,878 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-24 21:27:24,878 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-24 21:27:24,881 INFO L168 Benchmark]: Toolchain (without parser) took 1225.28 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 21.1 MB in the beginning and 24.3 MB in the end (delta: -3.2 MB). Peak memory consumption was 9.5 MB. Max. memory is 16.1 GB. [2020-10-24 21:27:24,882 INFO L168 Benchmark]: CDTParser took 0.37 ms. Allocated memory is still 44.0 MB. Free memory is still 23.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 21:27:24,883 INFO L168 Benchmark]: CACSL2BoogieTranslator took 307.83 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 20.4 MB in the beginning and 30.2 MB in the end (delta: -9.8 MB). Peak memory consumption was 3.3 MB. Max. memory is 16.1 GB. [2020-10-24 21:27:24,885 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.03 ms. Allocated memory is still 54.5 MB. Free memory was 30.2 MB in the beginning and 28.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 21:27:24,885 INFO L168 Benchmark]: Boogie Preprocessor took 24.74 ms. Allocated memory is still 54.5 MB. Free memory was 28.8 MB in the beginning and 27.7 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 21:27:24,886 INFO L168 Benchmark]: RCFGBuilder took 312.41 ms. Allocated memory is still 54.5 MB. Free memory was 27.7 MB in the beginning and 30.4 MB in the end (delta: -2.7 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. [2020-10-24 21:27:24,887 INFO L168 Benchmark]: TraceAbstraction took 518.98 ms. Allocated memory is still 54.5 MB. Free memory was 30.0 MB in the beginning and 24.7 MB in the end (delta: 5.3 MB). Peak memory consumption was 4.9 MB. Max. memory is 16.1 GB. [2020-10-24 21:27:24,888 INFO L168 Benchmark]: Witness Printer took 6.10 ms. Allocated memory is still 54.5 MB. Free memory was 24.7 MB in the beginning and 24.3 MB in the end (delta: 457.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 21:27:24,893 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37 ms. Allocated memory is still 44.0 MB. Free memory is still 23.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 307.83 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 20.4 MB in the beginning and 30.2 MB in the end (delta: -9.8 MB). Peak memory consumption was 3.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 41.03 ms. Allocated memory is still 54.5 MB. Free memory was 30.2 MB in the beginning and 28.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 24.74 ms. Allocated memory is still 54.5 MB. Free memory was 28.8 MB in the beginning and 27.7 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 312.41 ms. Allocated memory is still 54.5 MB. Free memory was 27.7 MB in the beginning and 30.4 MB in the end (delta: -2.7 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 518.98 ms. Allocated memory is still 54.5 MB. Free memory was 30.0 MB in the beginning and 24.7 MB in the end (delta: 5.3 MB). Peak memory consumption was 4.9 MB. Max. memory is 16.1 GB. * Witness Printer took 6.10 ms. Allocated memory is still 54.5 MB. Free memory was 24.7 MB in the beginning and 24.3 MB in the end (delta: 457.6 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_5.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 21:27:27,449 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 21:27:27,452 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 21:27:27,494 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-24 21:27:27,495 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-24 21:27:27,501 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-24 21:27:27,504 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-24 21:27:27,511 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-24 21:27:27,520 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-24 21:27:27,521 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-24 21:27:27,522 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-24 21:27:27,525 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-24 21:27:27,528 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 21:27:27,532 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 21:27:27,535 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 21:27:27,537 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 21:27:27,539 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 21:27:27,546 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 21:27:27,553 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 21:27:27,558 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 21:27:27,560 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 21:27:27,564 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 21:27:27,566 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 21:27:27,568 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 21:27:27,576 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-24 21:27:27,578 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-24 21:27:27,579 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-24 21:27:27,580 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-24 21:27:27,584 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-24 21:27:27,585 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-24 21:27:27,585 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-24 21:27:27,586 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-24 21:27:27,588 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-24 21:27:27,590 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-24 21:27:27,591 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-24 21:27:27,592 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-24 21:27:27,593 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-24 21:27:27,593 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-24 21:27:27,593 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 21:27:27,596 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 21:27:27,599 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 21:27:27,600 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-10-24 21:27:27,666 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 21:27:27,667 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 21:27:27,668 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-24 21:27:27,670 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-24 21:27:27,671 INFO L138 SettingsManager]: * Use SBE=true [2020-10-24 21:27:27,671 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 21:27:27,672 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 21:27:27,672 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 21:27:27,672 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 21:27:27,673 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 21:27:27,674 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 21:27:27,674 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 21:27:27,675 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-24 21:27:27,675 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-24 21:27:27,675 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 21:27:27,675 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 21:27:27,676 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 21:27:27,676 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 21:27:27,676 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 21:27:27,676 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-24 21:27:27,677 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 21:27:27,677 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 21:27:27,677 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 21:27:27,678 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 21:27:27,678 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-24 21:27:27,678 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-24 21:27:27,679 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-24 21:27:27,679 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-24 21:27:27,679 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 21:27:27,679 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-24 21:27:27,680 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-24 21:27:27,680 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d9c72214a613f4a26e1c80cbce806993eed5c352 [2020-10-24 21:27:28,124 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 21:27:28,169 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 21:27:28,173 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 21:27:28,175 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 21:27:28,176 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 21:27:28,177 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cdfpl/newton_1_5.i [2020-10-24 21:27:28,255 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/acfc5164d/b66c7ce9c7054598824ed5250138e1e3/FLAG3043346aa [2020-10-24 21:27:28,880 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 21:27:28,881 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_1_5.i [2020-10-24 21:27:28,892 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/acfc5164d/b66c7ce9c7054598824ed5250138e1e3/FLAG3043346aa [2020-10-24 21:27:29,244 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/acfc5164d/b66c7ce9c7054598824ed5250138e1e3 [2020-10-24 21:27:29,248 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 21:27:29,255 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-24 21:27:29,257 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 21:27:29,257 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 21:27:29,263 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 21:27:29,264 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:27:29" (1/1) ... [2020-10-24 21:27:29,277 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f830a4f 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 21:27:29,277 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:27:29" (1/1) ... [2020-10-24 21:27:29,287 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 21:27:29,309 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-24 21:27:29,503 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 21:27:29,519 INFO L203 MainTranslator]: Completed pre-run [2020-10-24 21:27:29,542 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 21:27:29,562 INFO L208 MainTranslator]: Completed translation [2020-10-24 21:27:29,562 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:27:29 WrapperNode [2020-10-24 21:27:29,563 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 21:27:29,564 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-24 21:27:29,564 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-24 21:27:29,565 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-24 21:27:29,574 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 21:27:29,585 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 21:27:29,607 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-24 21:27:29,608 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 21:27:29,609 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 21:27:29,609 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 21:27:29,619 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 21:27:29,619 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 21:27:29,623 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 21:27:29,624 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 21:27:29,646 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 21:27:29,652 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 21:27:29,654 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 21:27:29,662 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 21:27:29,663 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 21:27:29,664 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 21:27:29,664 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 21:27:29,667 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 21:27:29,735 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-24 21:27:29,736 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 21:27:29,736 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 21:27:29,736 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 21:27:36,800 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 21:27:36,813 INFO L298 CfgBuilder]: Removed 12 assume(true) statements. [2020-10-24 21:27:36,819 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:27:36 BoogieIcfgContainer [2020-10-24 21:27:36,820 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 21:27:36,825 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 21:27:36,826 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 21:27:36,842 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 21:27:36,848 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:27:29" (1/3) ... [2020-10-24 21:27:36,850 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dd3d8df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:27:36, skipping insertion in model container [2020-10-24 21:27:36,850 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 21:27:36,852 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dd3d8df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:27:36, skipping insertion in model container [2020-10-24 21:27:36,853 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:27:36" (3/3) ... [2020-10-24 21:27:36,857 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_1_5.i [2020-10-24 21:27:36,888 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-24 21:27:36,900 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 21:27:36,925 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 21:27:36,958 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 21:27:36,959 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 21:27:36,959 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-24 21:27:36,959 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 21:27:36,960 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 21:27:36,960 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 21:27:36,960 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 21:27:36,960 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 21:27:36,974 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2020-10-24 21:27:36,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-24 21:27:36,980 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 21:27:36,980 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 21:27:36,981 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 21:27:36,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 21:27:36,988 INFO L82 PathProgramCache]: Analyzing trace with hash -595084600, now seen corresponding path program 1 times [2020-10-24 21:27:37,002 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 21:27:37,003 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [560274166] [2020-10-24 21:27:37,004 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 21:27:38,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 21:27:38,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 1 conjunts are in the unsatisfiable core [2020-10-24 21:27:38,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 21:27:38,560 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 21:27:38,560 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 21:27:38,566 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 21:27:38,567 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [560274166] [2020-10-24 21:27:38,568 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 21:27:38,568 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-24 21:27:38,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006538077] [2020-10-24 21:27:38,575 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-24 21:27:38,575 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 21:27:38,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-24 21:27:38,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-24 21:27:38,598 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 2 states. [2020-10-24 21:27:38,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 21:27:38,614 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2020-10-24 21:27:38,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-24 21:27:38,616 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2020-10-24 21:27:38,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 21:27:38,639 INFO L225 Difference]: With dead ends: 25 [2020-10-24 21:27:38,639 INFO L226 Difference]: Without dead ends: 10 [2020-10-24 21:27:38,642 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 21:27:38,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-10-24 21:27:38,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2020-10-24 21:27:38,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-10-24 21:27:38,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 9 transitions. [2020-10-24 21:27:38,682 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 9 transitions. Word has length 9 [2020-10-24 21:27:38,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 21:27:38,683 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 9 transitions. [2020-10-24 21:27:38,683 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-24 21:27:38,683 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 9 transitions. [2020-10-24 21:27:38,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-24 21:27:38,684 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 21:27:38,684 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 21:27:38,898 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-24 21:27:38,899 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 21:27:38,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 21:27:38,901 INFO L82 PathProgramCache]: Analyzing trace with hash 1179922762, now seen corresponding path program 1 times [2020-10-24 21:27:38,903 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 21:27:38,904 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1806018090] [2020-10-24 21:27:38,904 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 21:28:05,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 21:28:05,611 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 21:28:19,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 21:28:19,611 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 21:28:19,765 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-10-24 21:28:19,765 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-24 21:28:19,967 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-24 21:28:19,999 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 09:28:19 BoogieIcfgContainer [2020-10-24 21:28:20,000 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 21:28:20,001 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-24 21:28:20,001 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-24 21:28:20,001 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-24 21:28:20,002 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:27:36" (3/4) ... [2020-10-24 21:28:20,004 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-24 21:28:20,056 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-24 21:28:20,056 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-24 21:28:20,059 INFO L168 Benchmark]: Toolchain (without parser) took 50807.87 ms. Allocated memory was 41.9 MB in the beginning and 50.3 MB in the end (delta: 8.4 MB). Free memory was 18.0 MB in the beginning and 31.5 MB in the end (delta: -13.5 MB). Peak memory consumption was 9.7 MB. Max. memory is 16.1 GB. [2020-10-24 21:28:20,060 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 41.9 MB. Free memory is still 27.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 21:28:20,061 INFO L168 Benchmark]: CACSL2BoogieTranslator took 306.45 ms. Allocated memory was 41.9 MB in the beginning and 50.3 MB in the end (delta: 8.4 MB). Free memory was 17.4 MB in the beginning and 24.4 MB in the end (delta: -7.1 MB). Peak memory consumption was 3.3 MB. Max. memory is 16.1 GB. [2020-10-24 21:28:20,062 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.50 ms. Allocated memory is still 50.3 MB. Free memory was 24.4 MB in the beginning and 22.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-10-24 21:28:20,063 INFO L168 Benchmark]: Boogie Preprocessor took 54.30 ms. Allocated memory is still 50.3 MB. Free memory was 22.8 MB in the beginning and 33.3 MB in the end (delta: -10.5 MB). Peak memory consumption was 5.0 MB. Max. memory is 16.1 GB. [2020-10-24 21:28:20,064 INFO L168 Benchmark]: RCFGBuilder took 7156.33 ms. Allocated memory is still 50.3 MB. Free memory was 33.3 MB in the beginning and 21.8 MB in the end (delta: 11.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-10-24 21:28:20,064 INFO L168 Benchmark]: TraceAbstraction took 43174.55 ms. Allocated memory is still 50.3 MB. Free memory was 21.5 MB in the beginning and 20.8 MB in the end (delta: 667.4 kB). Peak memory consumption was 1.4 MB. Max. memory is 16.1 GB. [2020-10-24 21:28:20,065 INFO L168 Benchmark]: Witness Printer took 55.56 ms. Allocated memory is still 50.3 MB. Free memory was 20.8 MB in the beginning and 31.5 MB in the end (delta: -10.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 21:28:20,070 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 41.9 MB. Free memory is still 27.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 306.45 ms. Allocated memory was 41.9 MB in the beginning and 50.3 MB in the end (delta: 8.4 MB). Free memory was 17.4 MB in the beginning and 24.4 MB in the end (delta: -7.1 MB). Peak memory consumption was 3.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 43.50 ms. Allocated memory is still 50.3 MB. Free memory was 24.4 MB in the beginning and 22.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 54.30 ms. Allocated memory is still 50.3 MB. Free memory was 22.8 MB in the beginning and 33.3 MB in the end (delta: -10.5 MB). Peak memory consumption was 5.0 MB. Max. memory is 16.1 GB. * RCFGBuilder took 7156.33 ms. Allocated memory is still 50.3 MB. Free memory was 33.3 MB in the beginning and 21.8 MB in the end (delta: 11.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 43174.55 ms. Allocated memory is still 50.3 MB. Free memory was 21.5 MB in the beginning and 20.8 MB in the end (delta: 667.4 kB). Peak memory consumption was 1.4 MB. Max. memory is 16.1 GB. * Witness Printer took 55.56 ms. Allocated memory is still 50.3 MB. Free memory was 20.8 MB in the beginning and 31.5 MB in the end (delta: -10.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 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_5.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: 43.0s, 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, 28.0s SatisfiabilityAnalysisTime, 0.0s 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...