./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/floats-cdfpl/newton_3_8.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ee8e70e7 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/floats-cdfpl/newton_3_8.i -s /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3e7a5c2d38e9221fb261a8b3d947e8e6a8fda84a .................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/floats-cdfpl/newton_3_8.i -s /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3e7a5c2d38e9221fb261a8b3d947e8e6a8fda84a ................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-ee8e70e [2020-10-24 13:59:18,922 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 13:59:18,928 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 13:59:18,975 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-24 13:59:18,976 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-24 13:59:18,981 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-24 13:59:18,987 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-24 13:59:18,991 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-24 13:59:18,998 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-24 13:59:19,004 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-24 13:59:19,005 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-24 13:59:19,007 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-24 13:59:19,008 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 13:59:19,011 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 13:59:19,013 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 13:59:19,015 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 13:59:19,016 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 13:59:19,020 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 13:59:19,024 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 13:59:19,032 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 13:59:19,034 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 13:59:19,036 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 13:59:19,038 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 13:59:19,040 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 13:59:19,049 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-24 13:59:19,049 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-24 13:59:19,049 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-24 13:59:19,052 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-24 13:59:19,052 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-24 13:59:19,054 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-24 13:59:19,054 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-24 13:59:19,055 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-24 13:59:19,057 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-24 13:59:19,058 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-24 13:59:19,059 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-24 13:59:19,060 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-24 13:59:19,070 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-24 13:59:19,070 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-24 13:59:19,071 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 13:59:19,073 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 13:59:19,074 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 13:59:19,075 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-24 13:59:19,130 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 13:59:19,130 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 13:59:19,134 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-24 13:59:19,134 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-24 13:59:19,134 INFO L138 SettingsManager]: * Use SBE=true [2020-10-24 13:59:19,135 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 13:59:19,135 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 13:59:19,135 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-24 13:59:19,135 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 13:59:19,135 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 13:59:19,137 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 13:59:19,137 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 13:59:19,137 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 13:59:19,137 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 13:59:19,137 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 13:59:19,138 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 13:59:19,138 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 13:59:19,138 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 13:59:19,138 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-24 13:59:19,139 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 13:59:19,139 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 13:59:19,139 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 13:59:19,139 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 13:59:19,139 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-24 13:59:19,140 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-24 13:59:19,140 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-24 13:59:19,140 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-24 13:59:19,141 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 13:59:19,141 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-24 13:59:19,141 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3e7a5c2d38e9221fb261a8b3d947e8e6a8fda84a [2020-10-24 13:59:19,546 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 13:59:19,579 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 13:59:19,583 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 13:59:19,585 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 13:59:19,586 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 13:59:19,587 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cdfpl/newton_3_8.i [2020-10-24 13:59:19,670 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/341c94006/cbad21bf294243a4b286def1030de3a0/FLAG979f24c2f [2020-10-24 13:59:20,412 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 13:59:20,413 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_3_8.i [2020-10-24 13:59:20,422 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/341c94006/cbad21bf294243a4b286def1030de3a0/FLAG979f24c2f [2020-10-24 13:59:20,743 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/341c94006/cbad21bf294243a4b286def1030de3a0 [2020-10-24 13:59:20,750 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 13:59:20,760 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-24 13:59:20,764 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 13:59:20,764 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 13:59:20,768 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 13:59:20,769 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:59:20" (1/1) ... [2020-10-24 13:59:20,773 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cea9da4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:59:20, skipping insertion in model container [2020-10-24 13:59:20,774 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:59:20" (1/1) ... [2020-10-24 13:59:20,783 INFO L146 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 13:59:20,801 INFO L179 MainTranslator]: Built tables and reachable declarations [2020-10-24 13:59:21,000 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-10-24 13:59:21,011 INFO L212 MainTranslator]: Completed pre-run [2020-10-24 13:59:21,034 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-10-24 13:59:21,052 INFO L217 MainTranslator]: Completed translation [2020-10-24 13:59:21,052 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:59:21 WrapperNode [2020-10-24 13:59:21,053 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 13:59:21,054 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-24 13:59:21,054 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-24 13:59:21,054 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-24 13:59:21,064 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:59:21" (1/1) ... [2020-10-24 13:59:21,073 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:59:21" (1/1) ... [2020-10-24 13:59:21,099 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-24 13:59:21,100 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 13:59:21,100 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 13:59:21,100 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 13:59:21,110 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:59:21" (1/1) ... [2020-10-24 13:59:21,110 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:59:21" (1/1) ... [2020-10-24 13:59:21,112 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:59:21" (1/1) ... [2020-10-24 13:59:21,113 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:59:21" (1/1) ... [2020-10-24 13:59:21,119 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:59:21" (1/1) ... [2020-10-24 13:59:21,122 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:59:21" (1/1) ... [2020-10-24 13:59:21,123 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:59:21" (1/1) ... [2020-10-24 13:59:21,126 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 13:59:21,127 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 13:59:21,127 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 13:59:21,128 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 13:59:21,129 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:59:21" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 13:59:21,215 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-24 13:59:21,215 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 13:59:21,216 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 13:59:21,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 13:59:21,647 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 13:59:21,647 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-10-24 13:59:21,649 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:59:21 BoogieIcfgContainer [2020-10-24 13:59:21,650 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 13:59:21,651 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 13:59:21,652 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 13:59:21,656 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 13:59:21,656 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 01:59:20" (1/3) ... [2020-10-24 13:59:21,657 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@479780c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:59:21, skipping insertion in model container [2020-10-24 13:59:21,657 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:59:21" (2/3) ... [2020-10-24 13:59:21,658 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@479780c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:59:21, skipping insertion in model container [2020-10-24 13:59:21,658 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:59:21" (3/3) ... [2020-10-24 13:59:21,659 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_3_8.i [2020-10-24 13:59:21,673 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-24 13:59:21,678 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 13:59:21,693 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 13:59:21,723 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 13:59:21,723 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 13:59:21,724 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-24 13:59:21,724 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 13:59:21,724 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 13:59:21,724 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 13:59:21,724 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 13:59:21,724 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 13:59:21,749 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2020-10-24 13:59:21,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-24 13:59:21,757 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 13:59:21,759 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 13:59:21,759 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 13:59:21,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 13:59:21,769 INFO L82 PathProgramCache]: Analyzing trace with hash 1296243724, now seen corresponding path program 1 times [2020-10-24 13:59:21,782 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 13:59:21,784 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101102473] [2020-10-24 13:59:21,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 13:59:21,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 13:59:22,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 13:59:22,006 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101102473] [2020-10-24 13:59:22,007 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 13:59:22,007 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-24 13:59:22,008 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968810861] [2020-10-24 13:59:22,013 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-24 13:59:22,014 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-24 13:59:22,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-24 13:59:22,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-24 13:59:22,039 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 2 states. [2020-10-24 13:59:22,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 13:59:22,062 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2020-10-24 13:59:22,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-24 13:59:22,064 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-10-24 13:59:22,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 13:59:22,074 INFO L225 Difference]: With dead ends: 33 [2020-10-24 13:59:22,075 INFO L226 Difference]: Without dead ends: 14 [2020-10-24 13:59:22,079 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-24 13:59:22,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-10-24 13:59:22,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-10-24 13:59:22,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-10-24 13:59:22,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 13 transitions. [2020-10-24 13:59:22,135 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 13 transitions. Word has length 13 [2020-10-24 13:59:22,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 13:59:22,136 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 13 transitions. [2020-10-24 13:59:22,136 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-24 13:59:22,137 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 13 transitions. [2020-10-24 13:59:22,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-24 13:59:22,138 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 13:59:22,138 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 13:59:22,139 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-24 13:59:22,139 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 13:59:22,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 13:59:22,143 INFO L82 PathProgramCache]: Analyzing trace with hash 1997308302, now seen corresponding path program 1 times [2020-10-24 13:59:22,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 13:59:22,144 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592412046] [2020-10-24 13:59:22,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 13:59:22,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 13:59:22,183 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 13:59:22,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 13:59:22,201 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 13:59:22,227 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-24 13:59:22,228 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-24 13:59:22,229 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-24 13:59:22,258 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 01:59:22 BoogieIcfgContainer [2020-10-24 13:59:22,258 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 13:59:22,259 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-24 13:59:22,259 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-24 13:59:22,259 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-24 13:59:22,260 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:59:21" (3/4) ... [2020-10-24 13:59:22,264 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-24 13:59:22,264 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-24 13:59:22,267 INFO L168 Benchmark]: Toolchain (without parser) took 1513.47 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 23.7 MB in the beginning and 24.6 MB in the end (delta: -965.3 kB). Peak memory consumption was 11.3 MB. Max. memory is 16.1 GB. [2020-10-24 13:59:22,268 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 46.1 MB. Free memory was 26.7 MB in the beginning and 26.7 MB in the end (delta: 32.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 13:59:22,269 INFO L168 Benchmark]: CACSL2BoogieTranslator took 289.53 ms. Allocated memory is still 46.1 MB. Free memory was 23.1 MB in the beginning and 24.2 MB in the end (delta: -1.2 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. [2020-10-24 13:59:22,270 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.69 ms. Allocated memory is still 46.1 MB. Free memory was 24.1 MB in the beginning and 22.5 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 13:59:22,271 INFO L168 Benchmark]: Boogie Preprocessor took 26.88 ms. Allocated memory is still 46.1 MB. Free memory was 22.4 MB in the beginning and 21.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 13:59:22,276 INFO L168 Benchmark]: RCFGBuilder took 522.38 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 21.2 MB in the beginning and 31.6 MB in the end (delta: -10.4 MB). Peak memory consumption was 3.2 MB. Max. memory is 16.1 GB. [2020-10-24 13:59:22,277 INFO L168 Benchmark]: TraceAbstraction took 606.80 ms. Allocated memory is still 56.6 MB. Free memory was 31.1 MB in the beginning and 24.9 MB in the end (delta: 6.2 MB). Peak memory consumption was 4.8 MB. Max. memory is 16.1 GB. [2020-10-24 13:59:22,278 INFO L168 Benchmark]: Witness Printer took 5.31 ms. Allocated memory is still 56.6 MB. Free memory was 24.9 MB in the beginning and 24.6 MB in the end (delta: 269.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 13:59:22,283 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 46.1 MB. Free memory was 26.7 MB in the beginning and 26.7 MB in the end (delta: 32.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 289.53 ms. Allocated memory is still 46.1 MB. Free memory was 23.1 MB in the beginning and 24.2 MB in the end (delta: -1.2 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 44.69 ms. Allocated memory is still 46.1 MB. Free memory was 24.1 MB in the beginning and 22.5 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 26.88 ms. Allocated memory is still 46.1 MB. Free memory was 22.4 MB in the beginning and 21.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 522.38 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 21.2 MB in the beginning and 31.6 MB in the end (delta: -10.4 MB). Peak memory consumption was 3.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 606.80 ms. Allocated memory is still 56.6 MB. Free memory was 31.1 MB in the beginning and 24.9 MB in the end (delta: 6.2 MB). Peak memory consumption was 4.8 MB. Max. memory is 16.1 GB. * Witness Printer took 5.31 ms. Allocated memory is still 56.6 MB. Free memory was 24.9 MB in the beginning and 24.6 MB in the end (delta: 269.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 12]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryArithmeticFLOAT_SMToperation at line 37, overapproximation of someBinaryDOUBLE_SMTComparisonOperation at line 41, overapproximation of someBinaryFLOAT_SMTComparisonOperation at line 31. Possible FailurePath: [L30] float IN = __VERIFIER_nondet_float(); [L15] COND FALSE !(!cond) [L20] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L25] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L33] float x = IN - f(IN)/fp(IN); [L20] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L25] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L35] x = x - f(x)/fp(x) [L20] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L25] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L37] x = x - f(x)/fp(x) [L41] COND TRUE !(x < 0.1) [L12] COND FALSE !(0) [L12] __assert_fail ("0", "newton_3_8.c", 3, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 17 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 144 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-ee8e70e [2020-10-24 13:59:24,990 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 13:59:24,993 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 13:59:25,031 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-24 13:59:25,032 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-24 13:59:25,033 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-24 13:59:25,035 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-24 13:59:25,038 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-24 13:59:25,040 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-24 13:59:25,041 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-24 13:59:25,042 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-24 13:59:25,044 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-24 13:59:25,044 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 13:59:25,045 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 13:59:25,047 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 13:59:25,048 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 13:59:25,049 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 13:59:25,050 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 13:59:25,052 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 13:59:25,054 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 13:59:25,056 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 13:59:25,058 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 13:59:25,059 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 13:59:25,060 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 13:59:25,064 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-24 13:59:25,064 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-24 13:59:25,065 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-24 13:59:25,066 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-24 13:59:25,067 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-24 13:59:25,068 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-24 13:59:25,069 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-24 13:59:25,073 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-24 13:59:25,074 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-24 13:59:25,077 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-24 13:59:25,079 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-24 13:59:25,079 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-24 13:59:25,081 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-24 13:59:25,082 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-24 13:59:25,085 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 13:59:25,086 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 13:59:25,087 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 13:59:25,088 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-10-24 13:59:25,132 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 13:59:25,132 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 13:59:25,133 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-24 13:59:25,134 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-24 13:59:25,134 INFO L138 SettingsManager]: * Use SBE=true [2020-10-24 13:59:25,134 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 13:59:25,134 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 13:59:25,135 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 13:59:25,135 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 13:59:25,135 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 13:59:25,135 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 13:59:25,135 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 13:59:25,135 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-24 13:59:25,136 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-24 13:59:25,136 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 13:59:25,136 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 13:59:25,136 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 13:59:25,136 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 13:59:25,137 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 13:59:25,137 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-24 13:59:25,137 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 13:59:25,137 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 13:59:25,137 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 13:59:25,138 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 13:59:25,138 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-24 13:59:25,138 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-24 13:59:25,138 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-24 13:59:25,138 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-24 13:59:25,138 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 13:59:25,139 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-24 13:59:25,139 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-24 13:59:25,139 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3e7a5c2d38e9221fb261a8b3d947e8e6a8fda84a [2020-10-24 13:59:25,529 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 13:59:25,564 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 13:59:25,567 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 13:59:25,569 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 13:59:25,570 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 13:59:25,571 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cdfpl/newton_3_8.i [2020-10-24 13:59:25,650 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d331c2ef7/7fd3df5ddcfb43b4a3e7a9379eddb767/FLAGc8f3a60b8 [2020-10-24 13:59:26,354 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 13:59:26,355 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_3_8.i [2020-10-24 13:59:26,364 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d331c2ef7/7fd3df5ddcfb43b4a3e7a9379eddb767/FLAGc8f3a60b8 [2020-10-24 13:59:26,712 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d331c2ef7/7fd3df5ddcfb43b4a3e7a9379eddb767 [2020-10-24 13:59:26,716 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 13:59:26,722 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-24 13:59:26,724 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 13:59:26,725 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 13:59:26,731 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 13:59:26,732 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:59:26" (1/1) ... [2020-10-24 13:59:26,738 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c2aa836 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:59:26, skipping insertion in model container [2020-10-24 13:59:26,739 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:59:26" (1/1) ... [2020-10-24 13:59:26,767 INFO L146 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 13:59:26,807 INFO L179 MainTranslator]: Built tables and reachable declarations [2020-10-24 13:59:26,997 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-10-24 13:59:27,015 INFO L212 MainTranslator]: Completed pre-run [2020-10-24 13:59:27,060 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-10-24 13:59:27,082 INFO L217 MainTranslator]: Completed translation [2020-10-24 13:59:27,083 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:59:27 WrapperNode [2020-10-24 13:59:27,083 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 13:59:27,084 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-24 13:59:27,084 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-24 13:59:27,084 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-24 13:59:27,094 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:59:27" (1/1) ... [2020-10-24 13:59:27,109 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:59:27" (1/1) ... [2020-10-24 13:59:27,167 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-24 13:59:27,168 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 13:59:27,168 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 13:59:27,169 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 13:59:27,180 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:59:27" (1/1) ... [2020-10-24 13:59:27,180 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:59:27" (1/1) ... [2020-10-24 13:59:27,189 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:59:27" (1/1) ... [2020-10-24 13:59:27,190 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:59:27" (1/1) ... [2020-10-24 13:59:27,228 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:59:27" (1/1) ... [2020-10-24 13:59:27,234 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:59:27" (1/1) ... [2020-10-24 13:59:27,243 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:59:27" (1/1) ... [2020-10-24 13:59:27,257 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 13:59:27,261 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 13:59:27,261 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 13:59:27,262 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 13:59:27,263 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:59:27" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 13:59:27,338 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.float_to_bitvec_DOUBLE [2020-10-24 13:59:27,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-24 13:59:27,339 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 13:59:27,339 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 13:59:27,339 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 13:59:27,339 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.float_to_bitvec_FLOAT [2020-10-24 13:59:41,546 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 13:59:41,547 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-10-24 13:59:41,549 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:59:41 BoogieIcfgContainer [2020-10-24 13:59:41,549 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 13:59:41,551 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 13:59:41,551 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 13:59:41,555 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 13:59:41,555 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 01:59:26" (1/3) ... [2020-10-24 13:59:41,556 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d510173 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:59:41, skipping insertion in model container [2020-10-24 13:59:41,556 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:59:27" (2/3) ... [2020-10-24 13:59:41,557 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d510173 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:59:41, skipping insertion in model container [2020-10-24 13:59:41,557 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:59:41" (3/3) ... [2020-10-24 13:59:41,559 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_3_8.i [2020-10-24 13:59:41,569 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-24 13:59:41,574 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 13:59:41,587 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 13:59:41,615 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 13:59:41,616 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 13:59:41,616 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-24 13:59:41,616 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 13:59:41,616 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 13:59:41,616 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 13:59:41,617 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 13:59:41,617 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 13:59:41,630 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-10-24 13:59:41,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-24 13:59:41,637 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 13:59:41,638 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 13:59:41,638 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 13:59:41,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 13:59:41,645 INFO L82 PathProgramCache]: Analyzing trace with hash 319496527, now seen corresponding path program 1 times [2020-10-24 13:59:41,662 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 13:59:41,663 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [561912501] [2020-10-24 13:59:41,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-10-24 13:59:48,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 13:59:49,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 1 conjunts are in the unsatisfiable core [2020-10-24 13:59:49,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 13:59:49,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 13:59:49,351 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 13:59:49,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 13:59:49,359 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [561912501] [2020-10-24 13:59:49,359 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 13:59:49,360 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-24 13:59:49,361 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304683339] [2020-10-24 13:59:49,366 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-24 13:59:49,366 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 13:59:49,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-24 13:59:49,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-24 13:59:49,385 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2020-10-24 13:59:49,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 13:59:49,403 INFO L93 Difference]: Finished difference Result 35 states and 39 transitions. [2020-10-24 13:59:49,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-24 13:59:49,405 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 15 [2020-10-24 13:59:49,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 13:59:49,415 INFO L225 Difference]: With dead ends: 35 [2020-10-24 13:59:49,415 INFO L226 Difference]: Without dead ends: 16 [2020-10-24 13:59:49,418 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-24 13:59:49,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-10-24 13:59:49,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-10-24 13:59:49,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-10-24 13:59:49,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2020-10-24 13:59:49,455 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 15 [2020-10-24 13:59:49,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 13:59:49,456 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2020-10-24 13:59:49,456 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-24 13:59:49,456 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2020-10-24 13:59:49,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-24 13:59:49,457 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 13:59:49,457 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 13:59:49,671 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-24 13:59:49,671 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 13:59:49,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 13:59:49,674 INFO L82 PathProgramCache]: Analyzing trace with hash 1020561105, now seen corresponding path program 1 times [2020-10-24 13:59:49,675 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 13:59:49,675 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [271168701] [2020-10-24 13:59:49,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-10-24 14:01:18,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 14:01:18,601 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 14:02:25,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 14:02:25,467 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 14:02:26,437 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-10-24 14:02:26,438 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-24 14:02:26,640 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-24 14:02:26,688 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 02:02:26 BoogieIcfgContainer [2020-10-24 14:02:26,688 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 14:02:26,689 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-24 14:02:26,689 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-24 14:02:26,689 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-24 14:02:26,690 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:59:41" (3/4) ... [2020-10-24 14:02:26,692 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-24 14:02:26,756 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-24 14:02:26,756 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-24 14:02:26,759 INFO L168 Benchmark]: Toolchain (without parser) took 180040.19 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 23.1 MB in the beginning and 26.1 MB in the end (delta: -3.0 MB). Peak memory consumption was 8.6 MB. Max. memory is 16.1 GB. [2020-10-24 14:02:26,760 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 35.7 MB. Free memory was 20.0 MB in the beginning and 19.9 MB in the end (delta: 28.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 14:02:26,761 INFO L168 Benchmark]: CACSL2BoogieTranslator took 358.80 ms. Allocated memory is still 46.1 MB. Free memory was 22.4 MB in the beginning and 29.1 MB in the end (delta: -6.6 MB). Peak memory consumption was 6.4 MB. Max. memory is 16.1 GB. [2020-10-24 14:02:26,762 INFO L168 Benchmark]: Boogie Procedure Inliner took 83.31 ms. Allocated memory is still 46.1 MB. Free memory was 29.1 MB in the beginning and 25.7 MB in the end (delta: 3.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-10-24 14:02:26,763 INFO L168 Benchmark]: Boogie Preprocessor took 91.93 ms. Allocated memory is still 46.1 MB. Free memory was 25.7 MB in the beginning and 23.3 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 14:02:26,764 INFO L168 Benchmark]: RCFGBuilder took 14288.23 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 23.3 MB in the beginning and 30.0 MB in the end (delta: -6.7 MB). Peak memory consumption was 14.8 MB. Max. memory is 16.1 GB. [2020-10-24 14:02:26,765 INFO L168 Benchmark]: TraceAbstraction took 165136.93 ms. Allocated memory is still 56.6 MB. Free memory was 29.7 MB in the beginning and 28.5 MB in the end (delta: 1.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-10-24 14:02:26,766 INFO L168 Benchmark]: Witness Printer took 67.97 ms. Allocated memory is still 56.6 MB. Free memory was 28.5 MB in the beginning and 26.1 MB in the end (delta: 2.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-10-24 14:02:26,770 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 35.7 MB. Free memory was 20.0 MB in the beginning and 19.9 MB in the end (delta: 28.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 358.80 ms. Allocated memory is still 46.1 MB. Free memory was 22.4 MB in the beginning and 29.1 MB in the end (delta: -6.6 MB). Peak memory consumption was 6.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 83.31 ms. Allocated memory is still 46.1 MB. Free memory was 29.1 MB in the beginning and 25.7 MB in the end (delta: 3.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 91.93 ms. Allocated memory is still 46.1 MB. Free memory was 25.7 MB in the beginning and 23.3 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 14288.23 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 23.3 MB in the beginning and 30.0 MB in the end (delta: -6.7 MB). Peak memory consumption was 14.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 165136.93 ms. Allocated memory is still 56.6 MB. Free memory was 29.7 MB in the beginning and 28.5 MB in the end (delta: 1.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Witness Printer took 67.97 ms. Allocated memory is still 56.6 MB. Free memory was 28.5 MB in the beginning and 26.1 MB in the end (delta: 2.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 12]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L30] float IN = __VERIFIER_nondet_float(); [L31] EXPR 2.0f [L31] EXPR -2.0f [L31] IN > -2.0f && IN < 2.0f [L31] EXPR 2.0f [L31] IN > -2.0f && IN < 2.0f [L15] COND FALSE !(!cond) [L20] EXPR x*x [L20] EXPR x*x*x [L20] EXPR 6.0f [L20] EXPR (x*x*x)/6.0f [L20] EXPR x - (x*x*x)/6.0f [L20] EXPR x*x [L20] EXPR x*x*x [L20] EXPR x*x*x*x [L20] EXPR x*x*x*x*x [L20] EXPR 120.0f [L20] EXPR (x*x*x*x*x)/120.0f [L20] EXPR x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f [L20] EXPR x*x [L20] EXPR x*x*x [L20] EXPR x*x*x*x [L20] EXPR x*x*x*x*x [L20] EXPR x*x*x*x*x*x [L20] EXPR x*x*x*x*x*x*x [L20] EXPR 5040.0f [L20] EXPR (x*x*x*x*x*x*x)/5040.0f [L20] EXPR x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f [L20] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L25] EXPR x*x [L25] EXPR 2.0f [L25] EXPR (x*x)/2.0f [L25] EXPR 1 - (x*x)/2.0f [L25] EXPR x*x [L25] EXPR x*x*x [L25] EXPR x*x*x*x [L25] EXPR 24.0f [L25] EXPR (x*x*x*x)/24.0f [L25] EXPR 1 - (x*x)/2.0f + (x*x*x*x)/24.0f [L25] EXPR x*x [L25] EXPR x*x*x [L25] EXPR x*x*x*x [L25] EXPR x*x*x*x*x [L25] EXPR x*x*x*x*x*x [L25] EXPR 720.0f [L25] EXPR (x*x*x*x*x*x)/720.0f [L25] EXPR 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f [L25] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L33] EXPR f(IN)/fp(IN) [L33] EXPR IN - f(IN)/fp(IN) [L33] float x = IN - f(IN)/fp(IN); [L20] EXPR x*x [L20] EXPR x*x*x [L20] EXPR 6.0f [L20] EXPR (x*x*x)/6.0f [L20] EXPR x - (x*x*x)/6.0f [L20] EXPR x*x [L20] EXPR x*x*x [L20] EXPR x*x*x*x [L20] EXPR x*x*x*x*x [L20] EXPR 120.0f [L20] EXPR (x*x*x*x*x)/120.0f [L20] EXPR x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f [L20] EXPR x*x [L20] EXPR x*x*x [L20] EXPR x*x*x*x [L20] EXPR x*x*x*x*x [L20] EXPR x*x*x*x*x*x [L20] EXPR x*x*x*x*x*x*x [L20] EXPR 5040.0f [L20] EXPR (x*x*x*x*x*x*x)/5040.0f [L20] EXPR x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f [L20] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L25] EXPR x*x [L25] EXPR 2.0f [L25] EXPR (x*x)/2.0f [L25] EXPR 1 - (x*x)/2.0f [L25] EXPR x*x [L25] EXPR x*x*x [L25] EXPR x*x*x*x [L25] EXPR 24.0f [L25] EXPR (x*x*x*x)/24.0f [L25] EXPR 1 - (x*x)/2.0f + (x*x*x*x)/24.0f [L25] EXPR x*x [L25] EXPR x*x*x [L25] EXPR x*x*x*x [L25] EXPR x*x*x*x*x [L25] EXPR x*x*x*x*x*x [L25] EXPR 720.0f [L25] EXPR (x*x*x*x*x*x)/720.0f [L25] EXPR 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f [L25] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L35] EXPR f(x)/fp(x) [L35] EXPR x - f(x)/fp(x) [L35] x = x - f(x)/fp(x) [L20] EXPR x*x [L20] EXPR x*x*x [L20] EXPR 6.0f [L20] EXPR (x*x*x)/6.0f [L20] EXPR x - (x*x*x)/6.0f [L20] EXPR x*x [L20] EXPR x*x*x [L20] EXPR x*x*x*x [L20] EXPR x*x*x*x*x [L20] EXPR 120.0f [L20] EXPR (x*x*x*x*x)/120.0f [L20] EXPR x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f [L20] EXPR x*x [L20] EXPR x*x*x [L20] EXPR x*x*x*x [L20] EXPR x*x*x*x*x [L20] EXPR x*x*x*x*x*x [L20] EXPR x*x*x*x*x*x*x [L20] EXPR 5040.0f [L20] EXPR (x*x*x*x*x*x*x)/5040.0f [L20] EXPR x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f [L20] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L25] EXPR x*x [L25] EXPR 2.0f [L25] EXPR (x*x)/2.0f [L25] EXPR 1 - (x*x)/2.0f [L25] EXPR x*x [L25] EXPR x*x*x [L25] EXPR x*x*x*x [L25] EXPR 24.0f [L25] EXPR (x*x*x*x)/24.0f [L25] EXPR 1 - (x*x)/2.0f + (x*x*x*x)/24.0f [L25] EXPR x*x [L25] EXPR x*x*x [L25] EXPR x*x*x*x [L25] EXPR x*x*x*x*x [L25] EXPR x*x*x*x*x*x [L25] EXPR 720.0f [L25] EXPR (x*x*x*x*x*x)/720.0f [L25] EXPR 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f [L25] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L37] EXPR f(x)/fp(x) [L37] EXPR x - f(x)/fp(x) [L37] x = x - f(x)/fp(x) [L41] EXPR 0.1 [L41] COND TRUE !(x < 0.1) [L12] COND FALSE !(0) [L12] __assert_fail ("0", "newton_3_8.c", 3, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 165.0s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 20 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred 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, 95.7s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 30 NumberOfCodeBlocks, 30 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 28 ConstructedInterpolants, 0 QuantifiedInterpolants, 392 SizeOfPredicates, 0 NumberOfNonLiveVariables, 170 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...