./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 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_3_8.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3e7a5c2d38e9221fb261a8b3d947e8e6a8fda84a .................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/floats-cdfpl/newton_3_8.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3e7a5c2d38e9221fb261a8b3d947e8e6a8fda84a .............................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-10-24 21:42:13,000 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 21:42:13,004 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 21:42:13,040 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-24 21:42:13,041 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-24 21:42:13,043 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-24 21:42:13,045 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-24 21:42:13,047 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-24 21:42:13,050 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-24 21:42:13,051 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-24 21:42:13,053 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-24 21:42:13,054 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-24 21:42:13,055 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 21:42:13,057 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 21:42:13,058 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 21:42:13,060 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 21:42:13,061 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 21:42:13,063 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 21:42:13,065 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 21:42:13,068 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 21:42:13,070 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 21:42:13,072 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 21:42:13,074 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 21:42:13,075 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 21:42:13,081 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-24 21:42:13,084 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-24 21:42:13,084 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-24 21:42:13,086 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-24 21:42:13,089 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-24 21:42:13,090 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-24 21:42:13,092 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-24 21:42:13,094 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-24 21:42:13,096 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-24 21:42:13,098 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-24 21:42:13,099 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-24 21:42:13,100 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-24 21:42:13,102 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-24 21:42:13,102 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-24 21:42:13,103 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 21:42:13,110 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 21:42:13,111 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 21:42:13,112 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-24 21:42:13,140 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 21:42:13,141 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 21:42:13,143 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-24 21:42:13,143 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-24 21:42:13,143 INFO L138 SettingsManager]: * Use SBE=true [2020-10-24 21:42:13,144 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 21:42:13,144 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 21:42:13,144 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-24 21:42:13,145 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 21:42:13,145 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 21:42:13,145 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 21:42:13,145 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 21:42:13,146 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 21:42:13,146 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 21:42:13,146 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 21:42:13,146 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 21:42:13,147 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 21:42:13,147 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 21:42:13,147 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-24 21:42:13,148 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 21:42:13,148 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 21:42:13,148 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 21:42:13,148 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 21:42:13,149 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-24 21:42:13,149 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-24 21:42:13,149 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-24 21:42:13,149 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-24 21:42:13,150 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 21:42:13,150 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-24 21:42:13,150 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3e7a5c2d38e9221fb261a8b3d947e8e6a8fda84a [2020-10-24 21:42:13,570 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 21:42:13,623 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 21:42:13,628 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 21:42:13,630 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 21:42:13,632 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 21:42:13,634 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cdfpl/newton_3_8.i [2020-10-24 21:42:13,718 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7137bc24/20336f0ae7cd48ce957ca5949c4bc605/FLAGc617f157f [2020-10-24 21:42:14,310 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 21:42:14,311 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_3_8.i [2020-10-24 21:42:14,319 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7137bc24/20336f0ae7cd48ce957ca5949c4bc605/FLAGc617f157f [2020-10-24 21:42:14,634 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7137bc24/20336f0ae7cd48ce957ca5949c4bc605 [2020-10-24 21:42:14,637 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 21:42:14,644 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-24 21:42:14,646 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 21:42:14,647 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 21:42:14,676 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 21:42:14,676 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:42:14" (1/1) ... [2020-10-24 21:42:14,687 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53486404 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:42:14, skipping insertion in model container [2020-10-24 21:42:14,701 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:42:14" (1/1) ... [2020-10-24 21:42:14,712 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 21:42:14,741 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-24 21:42:14,917 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 21:42:14,936 INFO L203 MainTranslator]: Completed pre-run [2020-10-24 21:42:14,983 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 21:42:15,007 INFO L208 MainTranslator]: Completed translation [2020-10-24 21:42:15,008 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:42:15 WrapperNode [2020-10-24 21:42:15,009 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 21:42:15,010 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-24 21:42:15,011 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-24 21:42:15,011 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-24 21:42:15,022 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:42:15" (1/1) ... [2020-10-24 21:42:15,044 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:42:15" (1/1) ... [2020-10-24 21:42:15,091 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-24 21:42:15,093 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 21:42:15,095 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 21:42:15,095 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 21:42:15,108 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:42:15" (1/1) ... [2020-10-24 21:42:15,109 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:42:15" (1/1) ... [2020-10-24 21:42:15,123 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:42:15" (1/1) ... [2020-10-24 21:42:15,124 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:42:15" (1/1) ... [2020-10-24 21:42:15,141 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:42:15" (1/1) ... [2020-10-24 21:42:15,146 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:42:15" (1/1) ... [2020-10-24 21:42:15,149 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:42:15" (1/1) ... [2020-10-24 21:42:15,159 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 21:42:15,162 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 21:42:15,163 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 21:42:15,163 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 21:42:15,164 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:42:15" (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 21:42:15,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-24 21:42:15,265 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 21:42:15,265 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 21:42:15,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 21:42:15,578 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 21:42:15,579 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-10-24 21:42:15,581 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:42:15 BoogieIcfgContainer [2020-10-24 21:42:15,582 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 21:42:15,584 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 21:42:15,586 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 21:42:15,593 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 21:42:15,597 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:42:14" (1/3) ... [2020-10-24 21:42:15,599 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f9b10ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:42:15, skipping insertion in model container [2020-10-24 21:42:15,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:42:15" (2/3) ... [2020-10-24 21:42:15,602 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f9b10ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:42:15, skipping insertion in model container [2020-10-24 21:42:15,603 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:42:15" (3/3) ... [2020-10-24 21:42:15,608 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_3_8.i [2020-10-24 21:42:15,646 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-24 21:42:15,654 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 21:42:15,683 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 21:42:15,716 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 21:42:15,717 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 21:42:15,717 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-24 21:42:15,717 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 21:42:15,718 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 21:42:15,718 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 21:42:15,718 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 21:42:15,719 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 21:42:15,737 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2020-10-24 21:42:15,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-24 21:42:15,744 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 21:42:15,746 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 21:42:15,747 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 21:42:15,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 21:42:15,755 INFO L82 PathProgramCache]: Analyzing trace with hash 1296243724, now seen corresponding path program 1 times [2020-10-24 21:42:15,767 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 21:42:15,768 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748852435] [2020-10-24 21:42:15,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 21:42:15,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 21:42:15,936 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 21:42:15,937 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748852435] [2020-10-24 21:42:15,938 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 21:42:15,944 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-24 21:42:15,946 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539036623] [2020-10-24 21:42:15,951 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-24 21:42:15,952 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-24 21:42:15,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-24 21:42:15,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-24 21:42:15,971 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 2 states. [2020-10-24 21:42:15,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 21:42:15,991 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2020-10-24 21:42:15,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-24 21:42:15,993 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-10-24 21:42:15,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 21:42:16,003 INFO L225 Difference]: With dead ends: 33 [2020-10-24 21:42:16,003 INFO L226 Difference]: Without dead ends: 14 [2020-10-24 21:42:16,007 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 21:42:16,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-10-24 21:42:16,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-10-24 21:42:16,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-10-24 21:42:16,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 13 transitions. [2020-10-24 21:42:16,051 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 13 transitions. Word has length 13 [2020-10-24 21:42:16,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 21:42:16,052 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 13 transitions. [2020-10-24 21:42:16,052 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-24 21:42:16,052 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 13 transitions. [2020-10-24 21:42:16,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-24 21:42:16,053 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 21:42:16,053 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 21:42:16,054 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-24 21:42:16,054 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 21:42:16,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 21:42:16,055 INFO L82 PathProgramCache]: Analyzing trace with hash 1997308302, now seen corresponding path program 1 times [2020-10-24 21:42:16,056 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 21:42:16,056 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25550650] [2020-10-24 21:42:16,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 21:42:16,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 21:42:16,082 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 21:42:16,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 21:42:16,115 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 21:42:16,149 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-24 21:42:16,150 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-24 21:42:16,151 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-24 21:42:16,181 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 09:42:16 BoogieIcfgContainer [2020-10-24 21:42:16,181 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 21:42:16,182 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-24 21:42:16,182 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-24 21:42:16,183 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-24 21:42:16,183 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:42:15" (3/4) ... [2020-10-24 21:42:16,188 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-24 21:42:16,189 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-24 21:42:16,192 INFO L168 Benchmark]: Toolchain (without parser) took 1551.31 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 22.0 MB in the beginning and 29.1 MB in the end (delta: -7.1 MB). Peak memory consumption was 5.3 MB. Max. memory is 16.1 GB. [2020-10-24 21:42:16,193 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 35.7 MB. Free memory was 18.4 MB in the beginning and 18.4 MB in the end (delta: 31.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 21:42:16,194 INFO L168 Benchmark]: CACSL2BoogieTranslator took 362.66 ms. Allocated memory is still 44.0 MB. Free memory was 21.3 MB in the beginning and 20.5 MB in the end (delta: 815.7 kB). Peak memory consumption was 3.3 MB. Max. memory is 16.1 GB. [2020-10-24 21:42:16,195 INFO L168 Benchmark]: Boogie Procedure Inliner took 82.52 ms. Allocated memory is still 44.0 MB. Free memory was 20.5 MB in the beginning and 28.8 MB in the end (delta: -8.3 MB). Peak memory consumption was 4.7 MB. Max. memory is 16.1 GB. [2020-10-24 21:42:16,196 INFO L168 Benchmark]: Boogie Preprocessor took 66.06 ms. Allocated memory is still 44.0 MB. Free memory was 28.8 MB in the beginning and 27.6 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 21:42:16,197 INFO L168 Benchmark]: RCFGBuilder took 419.48 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 27.5 MB in the beginning and 36.0 MB in the end (delta: -8.5 MB). Peak memory consumption was 9.3 MB. Max. memory is 16.1 GB. [2020-10-24 21:42:16,198 INFO L168 Benchmark]: TraceAbstraction took 597.76 ms. Allocated memory is still 54.5 MB. Free memory was 35.5 MB in the beginning and 29.6 MB in the end (delta: 5.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 16.1 GB. [2020-10-24 21:42:16,199 INFO L168 Benchmark]: Witness Printer took 6.78 ms. Allocated memory is still 54.5 MB. Free memory was 29.6 MB in the beginning and 29.1 MB in the end (delta: 512.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 21:42:16,204 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 35.7 MB. Free memory was 18.4 MB in the beginning and 18.4 MB in the end (delta: 31.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 362.66 ms. Allocated memory is still 44.0 MB. Free memory was 21.3 MB in the beginning and 20.5 MB in the end (delta: 815.7 kB). Peak memory consumption was 3.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 82.52 ms. Allocated memory is still 44.0 MB. Free memory was 20.5 MB in the beginning and 28.8 MB in the end (delta: -8.3 MB). Peak memory consumption was 4.7 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 66.06 ms. Allocated memory is still 44.0 MB. Free memory was 28.8 MB in the beginning and 27.6 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 419.48 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 27.5 MB in the beginning and 36.0 MB in the end (delta: -8.5 MB). Peak memory consumption was 9.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 597.76 ms. Allocated memory is still 54.5 MB. Free memory was 35.5 MB in the beginning and 29.6 MB in the end (delta: 5.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 16.1 GB. * Witness Printer took 6.78 ms. Allocated memory is still 54.5 MB. Free memory was 29.6 MB in the beginning and 29.1 MB in the end (delta: 512.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 12]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 31, overapproximation of someBinaryDOUBLEComparisonOperation at line 41, overapproximation of someBinaryArithmeticFLOAToperation at line 37. Possible FailurePath: [L30] float IN = __VERIFIER_nondet_float(); [L15] COND FALSE !(!cond) [L20] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L25] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L33] float x = IN - f(IN)/fp(IN); [L20] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L25] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L35] x = x - f(x)/fp(x) [L20] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L25] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L37] x = x - f(x)/fp(x) [L41] COND TRUE !(x < 0.1) [L12] COND FALSE !(0) [L12] __assert_fail ("0", "newton_3_8.c", 3, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.4s, 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-a4ecdab [2020-10-24 21:42:18,913 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 21:42:18,917 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 21:42:18,962 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-24 21:42:18,962 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-24 21:42:18,964 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-24 21:42:18,966 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-24 21:42:18,968 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-24 21:42:18,971 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-24 21:42:18,972 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-24 21:42:18,974 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-24 21:42:18,976 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-24 21:42:18,976 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 21:42:18,978 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 21:42:18,979 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 21:42:18,981 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 21:42:18,982 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 21:42:18,984 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 21:42:18,986 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 21:42:18,989 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 21:42:18,991 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 21:42:18,993 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 21:42:18,994 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 21:42:18,996 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 21:42:19,000 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-24 21:42:19,001 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-24 21:42:19,001 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-24 21:42:19,003 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-24 21:42:19,003 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-24 21:42:19,005 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-24 21:42:19,006 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-24 21:42:19,007 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-24 21:42:19,008 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-24 21:42:19,009 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-24 21:42:19,011 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-24 21:42:19,011 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-24 21:42:19,012 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-24 21:42:19,013 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-24 21:42:19,013 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 21:42:19,028 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 21:42:19,029 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 21:42:19,030 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-10-24 21:42:19,088 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 21:42:19,089 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 21:42:19,093 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-24 21:42:19,093 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-24 21:42:19,093 INFO L138 SettingsManager]: * Use SBE=true [2020-10-24 21:42:19,094 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 21:42:19,094 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 21:42:19,094 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 21:42:19,095 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 21:42:19,095 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 21:42:19,096 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 21:42:19,097 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 21:42:19,097 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-24 21:42:19,097 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-24 21:42:19,097 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 21:42:19,098 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 21:42:19,098 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 21:42:19,098 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 21:42:19,098 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 21:42:19,099 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-24 21:42:19,099 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 21:42:19,099 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 21:42:19,099 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 21:42:19,100 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 21:42:19,100 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-24 21:42:19,100 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-24 21:42:19,101 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-24 21:42:19,101 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-24 21:42:19,101 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 21:42:19,101 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-24 21:42:19,101 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-24 21:42:19,102 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3e7a5c2d38e9221fb261a8b3d947e8e6a8fda84a [2020-10-24 21:42:19,519 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 21:42:19,561 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 21:42:19,565 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 21:42:19,567 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 21:42:19,568 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 21:42:19,569 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cdfpl/newton_3_8.i [2020-10-24 21:42:19,646 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0be899906/b441d5c7874249408fa22043cae73404/FLAG28f31b683 [2020-10-24 21:42:20,373 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 21:42:20,374 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_3_8.i [2020-10-24 21:42:20,383 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0be899906/b441d5c7874249408fa22043cae73404/FLAG28f31b683 [2020-10-24 21:42:20,716 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0be899906/b441d5c7874249408fa22043cae73404 [2020-10-24 21:42:20,725 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 21:42:20,734 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-24 21:42:20,737 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 21:42:20,737 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 21:42:20,744 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 21:42:20,745 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:42:20" (1/1) ... [2020-10-24 21:42:20,757 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a1895e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:42:20, skipping insertion in model container [2020-10-24 21:42:20,757 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:42:20" (1/1) ... [2020-10-24 21:42:20,788 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 21:42:20,829 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-24 21:42:21,124 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 21:42:21,159 INFO L203 MainTranslator]: Completed pre-run [2020-10-24 21:42:21,209 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 21:42:21,240 INFO L208 MainTranslator]: Completed translation [2020-10-24 21:42:21,241 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:42:21 WrapperNode [2020-10-24 21:42:21,241 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 21:42:21,245 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-24 21:42:21,245 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-24 21:42:21,248 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-24 21:42:21,259 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:42:21" (1/1) ... [2020-10-24 21:42:21,289 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:42:21" (1/1) ... [2020-10-24 21:42:21,335 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-24 21:42:21,338 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 21:42:21,339 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 21:42:21,339 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 21:42:21,358 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:42:21" (1/1) ... [2020-10-24 21:42:21,359 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:42:21" (1/1) ... [2020-10-24 21:42:21,367 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:42:21" (1/1) ... [2020-10-24 21:42:21,368 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:42:21" (1/1) ... [2020-10-24 21:42:21,391 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:42:21" (1/1) ... [2020-10-24 21:42:21,398 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:42:21" (1/1) ... [2020-10-24 21:42:21,403 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:42:21" (1/1) ... [2020-10-24 21:42:21,408 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 21:42:21,409 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 21:42:21,409 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 21:42:21,410 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 21:42:21,411 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:42:21" (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 21:42:21,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-24 21:42:21,500 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 21:42:21,500 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 21:42:21,501 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 21:42:42,109 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 21:42:42,110 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-10-24 21:42:42,112 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:42:42 BoogieIcfgContainer [2020-10-24 21:42:42,112 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 21:42:42,114 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 21:42:42,122 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 21:42:42,126 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 21:42:42,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:42:20" (1/3) ... [2020-10-24 21:42:42,128 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@301a2ace and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:42:42, skipping insertion in model container [2020-10-24 21:42:42,128 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:42:21" (2/3) ... [2020-10-24 21:42:42,129 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@301a2ace and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:42:42, skipping insertion in model container [2020-10-24 21:42:42,129 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:42:42" (3/3) ... [2020-10-24 21:42:42,131 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_3_8.i [2020-10-24 21:42:42,145 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-24 21:42:42,151 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 21:42:42,166 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 21:42:42,195 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 21:42:42,196 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 21:42:42,196 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-24 21:42:42,196 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 21:42:42,197 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 21:42:42,197 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 21:42:42,197 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 21:42:42,197 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 21:42:42,212 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2020-10-24 21:42:42,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-24 21:42:42,218 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 21:42:42,219 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 21:42:42,220 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 21:42:42,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 21:42:42,227 INFO L82 PathProgramCache]: Analyzing trace with hash 1296243724, now seen corresponding path program 1 times [2020-10-24 21:42:42,241 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 21:42:42,242 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1595698840] [2020-10-24 21:42:42,242 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 21:42:45,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 21:42:45,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 1 conjunts are in the unsatisfiable core [2020-10-24 21:42:45,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 21:42:45,820 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 21:42:45,821 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 21:42:45,827 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 21:42:45,828 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1595698840] [2020-10-24 21:42:45,829 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 21:42:45,830 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-24 21:42:45,831 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579255495] [2020-10-24 21:42:45,837 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-24 21:42:45,838 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 21:42:45,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-24 21:42:45,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-24 21:42:45,868 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 2 states. [2020-10-24 21:42:45,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 21:42:45,885 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2020-10-24 21:42:45,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-24 21:42:45,887 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-10-24 21:42:45,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 21:42:45,895 INFO L225 Difference]: With dead ends: 33 [2020-10-24 21:42:45,895 INFO L226 Difference]: Without dead ends: 14 [2020-10-24 21:42:45,899 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-24 21:42:45,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-10-24 21:42:45,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-10-24 21:42:45,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-10-24 21:42:45,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 13 transitions. [2020-10-24 21:42:45,936 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 13 transitions. Word has length 13 [2020-10-24 21:42:45,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 21:42:45,937 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 13 transitions. [2020-10-24 21:42:45,937 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-24 21:42:45,938 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 13 transitions. [2020-10-24 21:42:45,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-24 21:42:45,938 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 21:42:45,938 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 21:42:46,152 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-24 21:42:46,153 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 21:42:46,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 21:42:46,155 INFO L82 PathProgramCache]: Analyzing trace with hash 1997308302, now seen corresponding path program 1 times [2020-10-24 21:42:46,156 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 21:42:46,156 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [857394654] [2020-10-24 21:42:46,157 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 21:43:09,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 21:43:09,371 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 21:43:32,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 21:43:32,581 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 21:43:32,931 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-10-24 21:43:32,931 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-24 21:43:33,133 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-24 21:43:33,177 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 09:43:33 BoogieIcfgContainer [2020-10-24 21:43:33,178 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 21:43:33,179 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-24 21:43:33,179 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-24 21:43:33,179 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-24 21:43:33,180 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:42:42" (3/4) ... [2020-10-24 21:43:33,183 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-24 21:43:33,230 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-24 21:43:33,230 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-24 21:43:33,233 INFO L168 Benchmark]: Toolchain (without parser) took 72504.67 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 22.3 MB in the beginning and 34.3 MB in the end (delta: -12.0 MB). Peak memory consumption was 5.0 kB. Max. memory is 16.1 GB. [2020-10-24 21:43:33,234 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 44.0 MB. Free memory was 24.7 MB in the beginning and 24.6 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 21:43:33,235 INFO L168 Benchmark]: CACSL2BoogieTranslator took 505.09 ms. Allocated memory is still 44.0 MB. Free memory was 21.7 MB in the beginning and 20.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 3.3 MB. Max. memory is 16.1 GB. [2020-10-24 21:43:33,235 INFO L168 Benchmark]: Boogie Procedure Inliner took 91.02 ms. Allocated memory is still 44.0 MB. Free memory was 20.2 MB in the beginning and 18.4 MB in the end (delta: 1.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-10-24 21:43:33,236 INFO L168 Benchmark]: Boogie Preprocessor took 70.08 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 18.4 MB in the beginning and 39.0 MB in the end (delta: -20.6 MB). Peak memory consumption was 5.1 MB. Max. memory is 16.1 GB. [2020-10-24 21:43:33,237 INFO L168 Benchmark]: RCFGBuilder took 20703.23 ms. Allocated memory is still 54.5 MB. Free memory was 39.0 MB in the beginning and 25.9 MB in the end (delta: 13.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-10-24 21:43:33,238 INFO L168 Benchmark]: TraceAbstraction took 51063.77 ms. Allocated memory is still 54.5 MB. Free memory was 25.5 MB in the beginning and 36.2 MB in the end (delta: -10.7 MB). Peak memory consumption was 4.1 MB. Max. memory is 16.1 GB. [2020-10-24 21:43:33,239 INFO L168 Benchmark]: Witness Printer took 51.37 ms. Allocated memory is still 54.5 MB. Free memory was 36.2 MB in the beginning and 34.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 21:43:33,244 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 44.0 MB. Free memory was 24.7 MB in the beginning and 24.6 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 505.09 ms. Allocated memory is still 44.0 MB. Free memory was 21.7 MB in the beginning and 20.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 3.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 91.02 ms. Allocated memory is still 44.0 MB. Free memory was 20.2 MB in the beginning and 18.4 MB in the end (delta: 1.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 70.08 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 18.4 MB in the beginning and 39.0 MB in the end (delta: -20.6 MB). Peak memory consumption was 5.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 20703.23 ms. Allocated memory is still 54.5 MB. Free memory was 39.0 MB in the beginning and 25.9 MB in the end (delta: 13.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 51063.77 ms. Allocated memory is still 54.5 MB. Free memory was 25.5 MB in the beginning and 36.2 MB in the end (delta: -10.7 MB). Peak memory consumption was 4.1 MB. Max. memory is 16.1 GB. * Witness Printer took 51.37 ms. Allocated memory is still 54.5 MB. Free memory was 36.2 MB in the beginning and 34.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 12]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L30] float IN = __VERIFIER_nondet_float(); [L15] COND FALSE !(!cond) [L20] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L25] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L33] float x = IN - f(IN)/fp(IN); [L20] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L25] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L35] x = x - f(x)/fp(x) [L20] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L25] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L37] x = x - f(x)/fp(x) [L41] COND TRUE !(x < 0.1) [L12] COND FALSE !(0) [L12] __assert_fail ("0", "newton_3_8.c", 3, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 50.9s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 17 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 26.4s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 288 SizeOfPredicates, 0 NumberOfNonLiveVariables, 49 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...