./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/floats-cdfpl/newton_1_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_1_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 9a455407b4fd80f1691ee95c228274faaa3c38f0 ............................................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/floats-cdfpl/newton_1_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 9a455407b4fd80f1691ee95c228274faaa3c38f0 ........................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-10-24 21:27:21,865 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 21:27:21,869 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 21:27:21,937 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-24 21:27:21,938 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-24 21:27:21,945 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-24 21:27:21,948 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-24 21:27:21,956 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-24 21:27:21,960 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-24 21:27:21,969 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-24 21:27:21,970 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-24 21:27:21,976 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-24 21:27:21,977 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 21:27:21,980 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 21:27:21,983 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 21:27:21,985 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 21:27:21,987 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 21:27:21,991 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 21:27:21,994 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 21:27:22,003 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 21:27:22,007 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 21:27:22,009 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 21:27:22,011 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 21:27:22,013 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 21:27:22,017 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-24 21:27:22,018 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-24 21:27:22,018 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-24 21:27:22,020 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-24 21:27:22,021 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-24 21:27:22,022 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-24 21:27:22,023 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-24 21:27:22,024 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-24 21:27:22,026 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-24 21:27:22,027 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-24 21:27:22,028 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-24 21:27:22,029 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-24 21:27:22,030 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-24 21:27:22,033 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-24 21:27:22,033 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 21:27:22,035 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 21:27:22,036 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 21:27:22,038 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-24 21:27:22,087 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 21:27:22,088 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 21:27:22,092 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-24 21:27:22,093 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-24 21:27:22,093 INFO L138 SettingsManager]: * Use SBE=true [2020-10-24 21:27:22,093 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 21:27:22,094 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 21:27:22,094 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-24 21:27:22,094 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 21:27:22,094 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 21:27:22,096 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 21:27:22,096 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 21:27:22,096 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 21:27:22,097 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 21:27:22,097 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 21:27:22,097 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 21:27:22,097 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 21:27:22,098 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 21:27:22,098 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-24 21:27:22,098 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 21:27:22,099 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 21:27:22,099 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 21:27:22,099 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 21:27:22,100 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-24 21:27:22,100 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-24 21:27:22,100 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-24 21:27:22,100 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-24 21:27:22,101 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 21:27:22,101 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-24 21:27:22,101 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9a455407b4fd80f1691ee95c228274faaa3c38f0 [2020-10-24 21:27:22,498 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 21:27:22,529 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 21:27:22,532 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 21:27:22,534 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 21:27:22,535 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 21:27:22,536 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cdfpl/newton_1_8.i [2020-10-24 21:27:22,615 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eee0264ab/f74a60d9c83b4f6fa68edae72bb53700/FLAGdb662dc47 [2020-10-24 21:27:23,332 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 21:27:23,337 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_1_8.i [2020-10-24 21:27:23,360 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eee0264ab/f74a60d9c83b4f6fa68edae72bb53700/FLAGdb662dc47 [2020-10-24 21:27:23,674 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eee0264ab/f74a60d9c83b4f6fa68edae72bb53700 [2020-10-24 21:27:23,681 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 21:27:23,689 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-24 21:27:23,691 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 21:27:23,691 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 21:27:23,697 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 21:27:23,698 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:27:23" (1/1) ... [2020-10-24 21:27:23,703 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c7e090 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:27:23, skipping insertion in model container [2020-10-24 21:27:23,703 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:27:23" (1/1) ... [2020-10-24 21:27:23,712 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 21:27:23,734 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-24 21:27:23,946 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 21:27:23,958 INFO L203 MainTranslator]: Completed pre-run [2020-10-24 21:27:23,984 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 21:27:24,003 INFO L208 MainTranslator]: Completed translation [2020-10-24 21:27:24,003 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:27:24 WrapperNode [2020-10-24 21:27:24,004 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 21:27:24,005 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-24 21:27:24,005 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-24 21:27:24,005 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-24 21:27:24,014 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:27:24" (1/1) ... [2020-10-24 21:27:24,030 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:27:24" (1/1) ... [2020-10-24 21:27:24,050 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-24 21:27:24,051 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 21:27:24,052 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 21:27:24,052 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 21:27:24,062 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:27:24" (1/1) ... [2020-10-24 21:27:24,062 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:27:24" (1/1) ... [2020-10-24 21:27:24,064 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:27:24" (1/1) ... [2020-10-24 21:27:24,064 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:27:24" (1/1) ... [2020-10-24 21:27:24,070 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:27:24" (1/1) ... [2020-10-24 21:27:24,073 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:27:24" (1/1) ... [2020-10-24 21:27:24,075 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:27:24" (1/1) ... [2020-10-24 21:27:24,077 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 21:27:24,079 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 21:27:24,079 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 21:27:24,079 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 21:27:24,080 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:27:24" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 21:27:24,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-24 21:27:24,179 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 21:27:24,179 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 21:27:24,180 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 21:27:24,535 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 21:27:24,536 INFO L298 CfgBuilder]: Removed 12 assume(true) statements. [2020-10-24 21:27:24,538 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:27:24 BoogieIcfgContainer [2020-10-24 21:27:24,538 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 21:27:24,544 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 21:27:24,545 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 21:27:24,549 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 21:27:24,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:27:23" (1/3) ... [2020-10-24 21:27:24,550 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35c76651 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:27:24, skipping insertion in model container [2020-10-24 21:27:24,551 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:27:24" (2/3) ... [2020-10-24 21:27:24,551 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35c76651 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:27:24, skipping insertion in model container [2020-10-24 21:27:24,552 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:27:24" (3/3) ... [2020-10-24 21:27:24,553 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_1_8.i [2020-10-24 21:27:24,568 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-24 21:27:24,573 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 21:27:24,590 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 21:27:24,649 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 21:27:24,649 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 21:27:24,650 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-24 21:27:24,650 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 21:27:24,650 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 21:27:24,650 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 21:27:24,651 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 21:27:24,651 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 21:27:24,668 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2020-10-24 21:27:24,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-24 21:27:24,675 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 21:27:24,676 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 21:27:24,678 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 21:27:24,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 21:27:24,688 INFO L82 PathProgramCache]: Analyzing trace with hash -595084600, now seen corresponding path program 1 times [2020-10-24 21:27:24,700 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 21:27:24,701 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765067271] [2020-10-24 21:27:24,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 21:27:24,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 21:27:24,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 21:27:24,927 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765067271] [2020-10-24 21:27:24,928 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 21:27:24,929 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-24 21:27:24,931 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94950301] [2020-10-24 21:27:24,937 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-24 21:27:24,938 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-24 21:27:24,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-24 21:27:24,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-24 21:27:24,962 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 2 states. [2020-10-24 21:27:24,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 21:27:24,987 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2020-10-24 21:27:24,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-24 21:27:24,989 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2020-10-24 21:27:24,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 21:27:25,000 INFO L225 Difference]: With dead ends: 25 [2020-10-24 21:27:25,001 INFO L226 Difference]: Without dead ends: 10 [2020-10-24 21:27:25,006 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-24 21:27:25,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-10-24 21:27:25,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2020-10-24 21:27:25,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-10-24 21:27:25,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 9 transitions. [2020-10-24 21:27:25,061 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 9 transitions. Word has length 9 [2020-10-24 21:27:25,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 21:27:25,061 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 9 transitions. [2020-10-24 21:27:25,061 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-24 21:27:25,062 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 9 transitions. [2020-10-24 21:27:25,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-24 21:27:25,064 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 21:27:25,064 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 21:27:25,065 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-24 21:27:25,065 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 21:27:25,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 21:27:25,070 INFO L82 PathProgramCache]: Analyzing trace with hash 1179922762, now seen corresponding path program 1 times [2020-10-24 21:27:25,071 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 21:27:25,071 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341479322] [2020-10-24 21:27:25,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 21:27:25,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 21:27:25,123 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 21:27:25,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 21:27:25,152 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 21:27:25,175 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-24 21:27:25,175 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-24 21:27:25,176 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-24 21:27:25,199 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 09:27:25 BoogieIcfgContainer [2020-10-24 21:27:25,200 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 21:27:25,201 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-24 21:27:25,201 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-24 21:27:25,201 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-24 21:27:25,202 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:27:24" (3/4) ... [2020-10-24 21:27:25,205 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-24 21:27:25,206 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-24 21:27:25,209 INFO L168 Benchmark]: Toolchain (without parser) took 1523.83 ms. Allocated memory is still 46.1 MB. Free memory was 31.4 MB in the beginning and 25.4 MB in the end (delta: 6.0 MB). Peak memory consumption was 6.2 MB. Max. memory is 16.1 GB. [2020-10-24 21:27:25,210 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 37.7 MB. Free memory was 20.6 MB in the beginning and 20.6 MB in the end (delta: 35.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 21:27:25,211 INFO L168 Benchmark]: CACSL2BoogieTranslator took 313.21 ms. Allocated memory is still 46.1 MB. Free memory was 30.8 MB in the beginning and 20.8 MB in the end (delta: 10.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-10-24 21:27:25,212 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.73 ms. Allocated memory is still 46.1 MB. Free memory was 20.8 MB in the beginning and 31.4 MB in the end (delta: -10.6 MB). Peak memory consumption was 4.7 MB. Max. memory is 16.1 GB. [2020-10-24 21:27:25,213 INFO L168 Benchmark]: Boogie Preprocessor took 26.27 ms. Allocated memory is still 46.1 MB. Free memory was 31.4 MB in the beginning and 30.3 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 21:27:25,214 INFO L168 Benchmark]: RCFGBuilder took 459.99 ms. Allocated memory is still 46.1 MB. Free memory was 30.3 MB in the beginning and 19.8 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-10-24 21:27:25,215 INFO L168 Benchmark]: TraceAbstraction took 655.63 ms. Allocated memory is still 46.1 MB. Free memory was 30.8 MB in the beginning and 25.9 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.7 MB. Max. memory is 16.1 GB. [2020-10-24 21:27:25,216 INFO L168 Benchmark]: Witness Printer took 5.22 ms. Allocated memory is still 46.1 MB. Free memory was 25.6 MB in the beginning and 25.4 MB in the end (delta: 213.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 21:27:25,221 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 37.7 MB. Free memory was 20.6 MB in the beginning and 20.6 MB in the end (delta: 35.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 313.21 ms. Allocated memory is still 46.1 MB. Free memory was 30.8 MB in the beginning and 20.8 MB in the end (delta: 10.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 45.73 ms. Allocated memory is still 46.1 MB. Free memory was 20.8 MB in the beginning and 31.4 MB in the end (delta: -10.6 MB). Peak memory consumption was 4.7 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 26.27 ms. Allocated memory is still 46.1 MB. Free memory was 31.4 MB in the beginning and 30.3 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 459.99 ms. Allocated memory is still 46.1 MB. Free memory was 30.3 MB in the beginning and 19.8 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 655.63 ms. Allocated memory is still 46.1 MB. Free memory was 30.8 MB in the beginning and 25.9 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.7 MB. Max. memory is 16.1 GB. * Witness Printer took 5.22 ms. Allocated memory is still 46.1 MB. Free memory was 25.6 MB in the beginning and 25.4 MB in the end (delta: 213.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 12]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 31, overapproximation of someBinaryDOUBLEComparisonOperation at line 41, overapproximation of someBinaryArithmeticFLOAToperation at line 33. Possible FailurePath: [L30] float IN = __VERIFIER_nondet_float(); [L15] COND FALSE !(!cond) [L20] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L25] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L33] float x = IN - f(IN)/fp(IN); [L41] COND TRUE !(x < 0.1) [L12] COND FALSE !(0) [L12] __assert_fail ("0", "newton_1_8.c", 3, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 13 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 64 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-a4ecdab [2020-10-24 21:27:27,960 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 21:27:27,965 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 21:27:28,031 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-24 21:27:28,032 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-24 21:27:28,038 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-24 21:27:28,042 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-24 21:27:28,048 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-24 21:27:28,052 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-24 21:27:28,060 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-24 21:27:28,062 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-24 21:27:28,068 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-24 21:27:28,069 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 21:27:28,072 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 21:27:28,074 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 21:27:28,076 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 21:27:28,077 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 21:27:28,081 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 21:27:28,083 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 21:27:28,088 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 21:27:28,092 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 21:27:28,094 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 21:27:28,096 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 21:27:28,098 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 21:27:28,105 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-24 21:27:28,105 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-24 21:27:28,106 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-24 21:27:28,108 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-24 21:27:28,109 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-24 21:27:28,110 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-24 21:27:28,110 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-24 21:27:28,111 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-24 21:27:28,114 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-24 21:27:28,115 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-24 21:27:28,116 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-24 21:27:28,117 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-24 21:27:28,118 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-24 21:27:28,118 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-24 21:27:28,118 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 21:27:28,121 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 21:27:28,122 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 21:27:28,123 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-10-24 21:27:28,170 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 21:27:28,171 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 21:27:28,173 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-24 21:27:28,173 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-24 21:27:28,173 INFO L138 SettingsManager]: * Use SBE=true [2020-10-24 21:27:28,174 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 21:27:28,174 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 21:27:28,174 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 21:27:28,174 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 21:27:28,175 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 21:27:28,175 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 21:27:28,175 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 21:27:28,175 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-24 21:27:28,176 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-24 21:27:28,176 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 21:27:28,176 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 21:27:28,176 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 21:27:28,177 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 21:27:28,177 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 21:27:28,177 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-24 21:27:28,178 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 21:27:28,178 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 21:27:28,178 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 21:27:28,178 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 21:27:28,179 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-24 21:27:28,179 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-24 21:27:28,179 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-24 21:27:28,179 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-24 21:27:28,180 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 21:27:28,180 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-24 21:27:28,180 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-24 21:27:28,180 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9a455407b4fd80f1691ee95c228274faaa3c38f0 [2020-10-24 21:27:28,550 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 21:27:28,601 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 21:27:28,607 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 21:27:28,609 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 21:27:28,610 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 21:27:28,611 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cdfpl/newton_1_8.i [2020-10-24 21:27:28,690 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a251f768/dec1b643483440d79e1194a853298218/FLAG7c468d3f6 [2020-10-24 21:27:29,368 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 21:27:29,369 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_1_8.i [2020-10-24 21:27:29,380 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a251f768/dec1b643483440d79e1194a853298218/FLAG7c468d3f6 [2020-10-24 21:27:29,700 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a251f768/dec1b643483440d79e1194a853298218 [2020-10-24 21:27:29,705 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 21:27:29,712 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-24 21:27:29,714 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 21:27:29,714 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 21:27:29,718 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 21:27:29,719 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:27:29" (1/1) ... [2020-10-24 21:27:29,723 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@671702ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:27:29, skipping insertion in model container [2020-10-24 21:27:29,724 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:27:29" (1/1) ... [2020-10-24 21:27:29,733 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 21:27:29,751 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-24 21:27:29,959 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 21:27:29,975 INFO L203 MainTranslator]: Completed pre-run [2020-10-24 21:27:29,998 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 21:27:30,018 INFO L208 MainTranslator]: Completed translation [2020-10-24 21:27:30,019 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:27:30 WrapperNode [2020-10-24 21:27:30,019 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 21:27:30,021 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-24 21:27:30,021 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-24 21:27:30,021 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-24 21:27:30,031 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:27:30" (1/1) ... [2020-10-24 21:27:30,043 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:27:30" (1/1) ... [2020-10-24 21:27:30,067 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-24 21:27:30,068 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 21:27:30,069 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 21:27:30,069 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 21:27:30,080 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:27:30" (1/1) ... [2020-10-24 21:27:30,081 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:27:30" (1/1) ... [2020-10-24 21:27:30,084 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:27:30" (1/1) ... [2020-10-24 21:27:30,085 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:27:30" (1/1) ... [2020-10-24 21:27:30,093 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:27:30" (1/1) ... [2020-10-24 21:27:30,096 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:27:30" (1/1) ... [2020-10-24 21:27:30,099 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:27:30" (1/1) ... [2020-10-24 21:27:30,102 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 21:27:30,104 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 21:27:30,104 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 21:27:30,104 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 21:27:30,105 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:27:30" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 21:27:30,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-24 21:27:30,190 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 21:27:30,190 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 21:27:30,190 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 21:27:38,653 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 21:27:38,654 INFO L298 CfgBuilder]: Removed 12 assume(true) statements. [2020-10-24 21:27:38,656 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:27:38 BoogieIcfgContainer [2020-10-24 21:27:38,656 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 21:27:38,658 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 21:27:38,658 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 21:27:38,662 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 21:27:38,662 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:27:29" (1/3) ... [2020-10-24 21:27:38,663 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48b070cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:27:38, skipping insertion in model container [2020-10-24 21:27:38,663 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:27:30" (2/3) ... [2020-10-24 21:27:38,664 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48b070cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:27:38, skipping insertion in model container [2020-10-24 21:27:38,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:27:38" (3/3) ... [2020-10-24 21:27:38,667 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_1_8.i [2020-10-24 21:27:38,685 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-24 21:27:38,691 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 21:27:38,710 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 21:27:38,754 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 21:27:38,754 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 21:27:38,754 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-24 21:27:38,754 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 21:27:38,754 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 21:27:38,755 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 21:27:38,755 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 21:27:38,755 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 21:27:38,782 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2020-10-24 21:27:38,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-24 21:27:38,792 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 21:27:38,793 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 21:27:38,794 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 21:27:38,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 21:27:38,801 INFO L82 PathProgramCache]: Analyzing trace with hash -595084600, now seen corresponding path program 1 times [2020-10-24 21:27:38,815 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 21:27:38,816 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [167298122] [2020-10-24 21:27:38,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-10-24 21:27:40,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 21:27:40,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 1 conjunts are in the unsatisfiable core [2020-10-24 21:27:40,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 21:27:40,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 21:27:40,321 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 21:27:40,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 21:27:40,328 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [167298122] [2020-10-24 21:27:40,329 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 21:27:40,330 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-24 21:27:40,331 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699123921] [2020-10-24 21:27:40,336 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-24 21:27:40,336 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 21:27:40,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-24 21:27:40,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-24 21:27:40,359 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 2 states. [2020-10-24 21:27:40,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 21:27:40,378 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2020-10-24 21:27:40,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-24 21:27:40,380 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2020-10-24 21:27:40,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 21:27:40,390 INFO L225 Difference]: With dead ends: 25 [2020-10-24 21:27:40,390 INFO L226 Difference]: Without dead ends: 10 [2020-10-24 21:27:40,394 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-24 21:27:40,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-10-24 21:27:40,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2020-10-24 21:27:40,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-10-24 21:27:40,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 9 transitions. [2020-10-24 21:27:40,434 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 9 transitions. Word has length 9 [2020-10-24 21:27:40,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 21:27:40,434 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 9 transitions. [2020-10-24 21:27:40,435 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-24 21:27:40,435 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 9 transitions. [2020-10-24 21:27:40,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-24 21:27:40,436 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 21:27:40,436 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 21:27:40,647 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-24 21:27:40,649 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 21:27:40,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 21:27:40,653 INFO L82 PathProgramCache]: Analyzing trace with hash 1179922762, now seen corresponding path program 1 times [2020-10-24 21:27:40,654 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 21:27:40,655 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2024176240] [2020-10-24 21:27:40,655 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 21:27:45,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 21:27:45,834 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 21:28:34,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 21:28:34,064 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 21:28:34,188 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-10-24 21:28:34,189 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-24 21:28:34,391 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-24 21:28:34,428 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 09:28:34 BoogieIcfgContainer [2020-10-24 21:28:34,428 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 21:28:34,429 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-24 21:28:34,429 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-24 21:28:34,429 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-24 21:28:34,430 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:27:38" (3/4) ... [2020-10-24 21:28:34,432 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-24 21:28:34,472 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-24 21:28:34,472 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-24 21:28:34,481 INFO L168 Benchmark]: Toolchain (without parser) took 64767.07 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 24.2 MB in the beginning and 30.8 MB in the end (delta: -6.7 MB). Peak memory consumption was 5.8 MB. Max. memory is 16.1 GB. [2020-10-24 21:28:34,484 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 46.1 MB. Free memory was 29.6 MB in the beginning and 29.6 MB in the end (delta: 63.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 21:28:34,485 INFO L168 Benchmark]: CACSL2BoogieTranslator took 306.10 ms. Allocated memory is still 46.1 MB. Free memory was 23.6 MB in the beginning and 26.4 MB in the end (delta: -2.8 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. [2020-10-24 21:28:34,487 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.12 ms. Allocated memory is still 46.1 MB. Free memory was 26.4 MB in the beginning and 24.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 21:28:34,490 INFO L168 Benchmark]: Boogie Preprocessor took 34.25 ms. Allocated memory is still 46.1 MB. Free memory was 24.7 MB in the beginning and 23.6 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 21:28:34,491 INFO L168 Benchmark]: RCFGBuilder took 8552.41 ms. Allocated memory is still 46.1 MB. Free memory was 23.4 MB in the beginning and 23.1 MB in the end (delta: 367.5 kB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. [2020-10-24 21:28:34,492 INFO L168 Benchmark]: TraceAbstraction took 55771.01 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 22.7 MB in the beginning and 32.7 MB in the end (delta: -10.0 MB). Peak memory consumption was 892.4 kB. Max. memory is 16.1 GB. [2020-10-24 21:28:34,493 INFO L168 Benchmark]: Witness Printer took 43.24 ms. Allocated memory is still 56.6 MB. Free memory was 32.5 MB in the beginning and 30.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 21:28:34,498 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 46.1 MB. Free memory was 29.6 MB in the beginning and 29.6 MB in the end (delta: 63.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 306.10 ms. Allocated memory is still 46.1 MB. Free memory was 23.6 MB in the beginning and 26.4 MB in the end (delta: -2.8 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 47.12 ms. Allocated memory is still 46.1 MB. Free memory was 26.4 MB in the beginning and 24.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 34.25 ms. Allocated memory is still 46.1 MB. Free memory was 24.7 MB in the beginning and 23.6 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 8552.41 ms. Allocated memory is still 46.1 MB. Free memory was 23.4 MB in the beginning and 23.1 MB in the end (delta: 367.5 kB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 55771.01 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 22.7 MB in the beginning and 32.7 MB in the end (delta: -10.0 MB). Peak memory consumption was 892.4 kB. Max. memory is 16.1 GB. * Witness Printer took 43.24 ms. Allocated memory is still 56.6 MB. Free memory was 32.5 MB in the beginning and 30.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 12]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L30] float IN = __VERIFIER_nondet_float(); [L15] COND FALSE !(!cond) [L20] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L25] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L33] float x = IN - f(IN)/fp(IN); [L41] COND TRUE !(x < 0.1) [L12] COND FALSE !(0) [L12] __assert_fail ("0", "newton_1_8.c", 3, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 55.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 13 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 6.4s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 128 SizeOfPredicates, 0 NumberOfNonLiveVariables, 33 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...