./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/floats-cdfpl/newton_1_6.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 54858612 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_6.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 c899a11b075f77e8271e38f51a1c9ce4fc2e25ab ............................................................................................................................................................................................................................................................................ 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_6.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 c899a11b075f77e8271e38f51a1c9ce4fc2e25ab ........................................................................................................................................................................................................................................................................................ 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 0.2.0-5485861 [2020-10-25 21:29:52,553 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-25 21:29:52,556 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-25 21:29:52,607 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-25 21:29:52,608 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-25 21:29:52,610 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-25 21:29:52,612 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-25 21:29:52,614 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-25 21:29:52,617 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-25 21:29:52,618 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-25 21:29:52,620 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-25 21:29:52,621 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-25 21:29:52,622 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-25 21:29:52,623 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-25 21:29:52,624 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-25 21:29:52,626 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-25 21:29:52,628 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-25 21:29:52,629 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-25 21:29:52,631 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-25 21:29:52,634 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-25 21:29:52,639 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-25 21:29:52,641 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-25 21:29:52,643 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-25 21:29:52,645 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-25 21:29:52,655 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-25 21:29:52,658 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-25 21:29:52,659 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-25 21:29:52,660 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-25 21:29:52,665 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-25 21:29:52,668 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-25 21:29:52,669 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-25 21:29:52,670 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-25 21:29:52,673 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-25 21:29:52,677 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-25 21:29:52,678 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-25 21:29:52,680 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-25 21:29:52,681 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-25 21:29:52,682 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-25 21:29:52,682 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-25 21:29:52,684 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-25 21:29:52,687 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-25 21:29:52,688 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-25 21:29:52,749 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-25 21:29:52,750 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-25 21:29:52,752 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-25 21:29:52,753 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-25 21:29:52,753 INFO L138 SettingsManager]: * Use SBE=true [2020-10-25 21:29:52,753 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-25 21:29:52,754 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-25 21:29:52,754 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-25 21:29:52,754 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-25 21:29:52,754 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-25 21:29:52,755 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-25 21:29:52,756 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-25 21:29:52,756 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-25 21:29:52,756 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-25 21:29:52,756 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-25 21:29:52,757 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-25 21:29:52,757 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-25 21:29:52,757 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-25 21:29:52,758 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-25 21:29:52,758 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-25 21:29:52,758 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-25 21:29:52,758 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-25 21:29:52,759 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-25 21:29:52,759 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-25 21:29:52,759 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-25 21:29:52,759 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-25 21:29:52,760 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-25 21:29:52,760 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-25 21:29:52,760 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-25 21:29:52,761 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c899a11b075f77e8271e38f51a1c9ce4fc2e25ab [2020-10-25 21:29:53,169 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-25 21:29:53,198 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-25 21:29:53,201 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-25 21:29:53,203 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-25 21:29:53,204 INFO L275 PluginConnector]: CDTParser initialized [2020-10-25 21:29:53,208 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cdfpl/newton_1_6.i [2020-10-25 21:29:53,306 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93927f3f3/e3797b0e1d3242bb8e36e1fbde315798/FLAGcc99639a9 [2020-10-25 21:29:53,885 INFO L306 CDTParser]: Found 1 translation units. [2020-10-25 21:29:53,889 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_1_6.i [2020-10-25 21:29:53,898 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93927f3f3/e3797b0e1d3242bb8e36e1fbde315798/FLAGcc99639a9 [2020-10-25 21:29:54,246 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93927f3f3/e3797b0e1d3242bb8e36e1fbde315798 [2020-10-25 21:29:54,252 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-25 21:29:54,263 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-25 21:29:54,269 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-25 21:29:54,269 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-25 21:29:54,282 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-25 21:29:54,283 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 09:29:54" (1/1) ... [2020-10-25 21:29:54,287 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51796ec8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:29:54, skipping insertion in model container [2020-10-25 21:29:54,288 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 09:29:54" (1/1) ... [2020-10-25 21:29:54,304 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-25 21:29:54,353 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-25 21:29:54,645 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 21:29:54,662 INFO L203 MainTranslator]: Completed pre-run [2020-10-25 21:29:54,703 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 21:29:54,726 INFO L208 MainTranslator]: Completed translation [2020-10-25 21:29:54,728 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:29:54 WrapperNode [2020-10-25 21:29:54,728 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-25 21:29:54,730 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-25 21:29:54,731 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-25 21:29:54,731 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-25 21:29:54,742 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:29:54" (1/1) ... [2020-10-25 21:29:54,759 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:29:54" (1/1) ... [2020-10-25 21:29:54,787 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-25 21:29:54,788 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-25 21:29:54,789 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-25 21:29:54,789 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-25 21:29:54,800 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:29:54" (1/1) ... [2020-10-25 21:29:54,800 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:29:54" (1/1) ... [2020-10-25 21:29:54,811 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:29:54" (1/1) ... [2020-10-25 21:29:54,812 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:29:54" (1/1) ... [2020-10-25 21:29:54,826 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:29:54" (1/1) ... [2020-10-25 21:29:54,828 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:29:54" (1/1) ... [2020-10-25 21:29:54,834 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:29:54" (1/1) ... [2020-10-25 21:29:54,840 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-25 21:29:54,842 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-25 21:29:54,843 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-25 21:29:54,843 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-25 21:29:54,847 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:29:54" (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 [2020-10-25 21:29:54,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-25 21:29:54,937 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-25 21:29:54,938 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-25 21:29:54,938 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-25 21:29:55,146 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-25 21:29:55,146 INFO L298 CfgBuilder]: Removed 12 assume(true) statements. [2020-10-25 21:29:55,148 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 09:29:55 BoogieIcfgContainer [2020-10-25 21:29:55,148 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-25 21:29:55,151 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-25 21:29:55,151 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-25 21:29:55,155 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-25 21:29:55,156 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 09:29:54" (1/3) ... [2020-10-25 21:29:55,157 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13a3c90a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 09:29:55, skipping insertion in model container [2020-10-25 21:29:55,157 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:29:54" (2/3) ... [2020-10-25 21:29:55,158 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13a3c90a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 09:29:55, skipping insertion in model container [2020-10-25 21:29:55,158 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 09:29:55" (3/3) ... [2020-10-25 21:29:55,160 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_1_6.i [2020-10-25 21:29:55,175 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-25 21:29:55,181 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-25 21:29:55,197 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-25 21:29:55,236 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-25 21:29:55,237 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-25 21:29:55,237 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-25 21:29:55,238 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-25 21:29:55,238 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-25 21:29:55,238 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-25 21:29:55,239 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-25 21:29:55,239 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-25 21:29:55,264 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2020-10-25 21:29:55,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-25 21:29:55,271 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 21:29:55,272 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 21:29:55,273 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 21:29:55,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 21:29:55,281 INFO L82 PathProgramCache]: Analyzing trace with hash -595084600, now seen corresponding path program 1 times [2020-10-25 21:29:55,293 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 21:29:55,293 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434650976] [2020-10-25 21:29:55,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 21:29:55,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 21:29:55,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 21:29:55,479 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434650976] [2020-10-25 21:29:55,480 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 21:29:55,480 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-25 21:29:55,482 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974891969] [2020-10-25 21:29:55,487 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-25 21:29:55,488 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 21:29:55,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-25 21:29:55,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-25 21:29:55,509 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 2 states. [2020-10-25 21:29:55,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 21:29:55,529 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2020-10-25 21:29:55,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-25 21:29:55,531 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2020-10-25 21:29:55,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 21:29:55,542 INFO L225 Difference]: With dead ends: 25 [2020-10-25 21:29:55,543 INFO L226 Difference]: Without dead ends: 10 [2020-10-25 21:29:55,547 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 [2020-10-25 21:29:55,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-10-25 21:29:55,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2020-10-25 21:29:55,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-10-25 21:29:55,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 9 transitions. [2020-10-25 21:29:55,589 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 9 transitions. Word has length 9 [2020-10-25 21:29:55,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 21:29:55,590 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 9 transitions. [2020-10-25 21:29:55,590 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-25 21:29:55,590 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 9 transitions. [2020-10-25 21:29:55,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-25 21:29:55,591 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 21:29:55,591 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 21:29:55,592 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-25 21:29:55,592 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 21:29:55,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 21:29:55,594 INFO L82 PathProgramCache]: Analyzing trace with hash 1179922762, now seen corresponding path program 1 times [2020-10-25 21:29:55,594 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 21:29:55,594 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513883699] [2020-10-25 21:29:55,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 21:29:55,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-25 21:29:55,621 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-25 21:29:55,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-25 21:29:55,641 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-25 21:29:55,668 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-25 21:29:55,669 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-25 21:29:55,670 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-25 21:29:55,697 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 09:29:55 BoogieIcfgContainer [2020-10-25 21:29:55,698 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-25 21:29:55,699 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-25 21:29:55,699 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-25 21:29:55,699 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-25 21:29:55,700 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 09:29:55" (3/4) ... [2020-10-25 21:29:55,705 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-25 21:29:55,705 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-25 21:29:55,709 INFO L168 Benchmark]: Toolchain (without parser) took 1450.75 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 22.8 MB in the beginning and 24.4 MB in the end (delta: -1.5 MB). Peak memory consumption was 11.2 MB. Max. memory is 16.1 GB. [2020-10-25 21:29:55,710 INFO L168 Benchmark]: CDTParser took 0.43 ms. Allocated memory is still 46.1 MB. Free memory is still 28.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 21:29:55,711 INFO L168 Benchmark]: CACSL2BoogieTranslator took 460.07 ms. Allocated memory is still 46.1 MB. Free memory was 22.3 MB in the beginning and 21.6 MB in the end (delta: 732.4 kB). Peak memory consumption was 3.3 MB. Max. memory is 16.1 GB. [2020-10-25 21:29:55,712 INFO L168 Benchmark]: Boogie Procedure Inliner took 57.06 ms. Allocated memory is still 46.1 MB. Free memory was 21.6 MB in the beginning and 20.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 21:29:55,713 INFO L168 Benchmark]: Boogie Preprocessor took 52.39 ms. Allocated memory is still 46.1 MB. Free memory was 20.1 MB in the beginning and 19.1 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 21:29:55,714 INFO L168 Benchmark]: RCFGBuilder took 307.20 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 19.0 MB in the beginning and 30.8 MB in the end (delta: -11.8 MB). Peak memory consumption was 4.9 MB. Max. memory is 16.1 GB. [2020-10-25 21:29:55,715 INFO L168 Benchmark]: TraceAbstraction took 547.16 ms. Allocated memory is still 56.6 MB. Free memory was 30.4 MB in the beginning and 24.9 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.1 MB. Max. memory is 16.1 GB. [2020-10-25 21:29:55,716 INFO L168 Benchmark]: Witness Printer took 6.77 ms. Allocated memory is still 56.6 MB. Free memory was 24.9 MB in the beginning and 24.4 MB in the end (delta: 535.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 21:29:55,722 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.43 ms. Allocated memory is still 46.1 MB. Free memory is still 28.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 460.07 ms. Allocated memory is still 46.1 MB. Free memory was 22.3 MB in the beginning and 21.6 MB in the end (delta: 732.4 kB). Peak memory consumption was 3.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 57.06 ms. Allocated memory is still 46.1 MB. Free memory was 21.6 MB in the beginning and 20.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 52.39 ms. Allocated memory is still 46.1 MB. Free memory was 20.1 MB in the beginning and 19.1 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 307.20 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 19.0 MB in the beginning and 30.8 MB in the end (delta: -11.8 MB). Peak memory consumption was 4.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 547.16 ms. Allocated memory is still 56.6 MB. Free memory was 30.4 MB in the beginning and 24.9 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.1 MB. Max. memory is 16.1 GB. * Witness Printer took 6.77 ms. Allocated memory is still 56.6 MB. Free memory was 24.9 MB in the beginning and 24.4 MB in the end (delta: 535.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 12]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 31, overapproximation of someBinaryDOUBLEComparisonOperation at line 41, overapproximation of someBinaryArithmeticFLOAToperation at line 33. Possible FailurePath: [L30] float IN = __VERIFIER_nondet_float(); [L15] COND FALSE !(!cond) [L20] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L25] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L33] float x = IN - f(IN)/fp(IN); [L41] COND TRUE !(x < 0.1) [L12] COND FALSE !(0) [L12] __assert_fail ("0", "newton_1_6.c", 3, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 13 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 64 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-5485861 [2020-10-25 21:29:58,554 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-25 21:29:58,561 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-25 21:29:58,621 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-25 21:29:58,622 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-25 21:29:58,624 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-25 21:29:58,626 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-25 21:29:58,628 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-25 21:29:58,631 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-25 21:29:58,632 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-25 21:29:58,634 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-25 21:29:58,636 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-25 21:29:58,636 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-25 21:29:58,638 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-25 21:29:58,639 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-25 21:29:58,641 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-25 21:29:58,643 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-25 21:29:58,644 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-25 21:29:58,646 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-25 21:29:58,649 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-25 21:29:58,651 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-25 21:29:58,653 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-25 21:29:58,655 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-25 21:29:58,656 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-25 21:29:58,659 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-25 21:29:58,660 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-25 21:29:58,660 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-25 21:29:58,662 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-25 21:29:58,662 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-25 21:29:58,664 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-25 21:29:58,664 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-25 21:29:58,665 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-25 21:29:58,667 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-25 21:29:58,668 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-25 21:29:58,669 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-25 21:29:58,670 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-25 21:29:58,671 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-25 21:29:58,671 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-25 21:29:58,672 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-25 21:29:58,673 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-25 21:29:58,674 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-25 21:29:58,675 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-10-25 21:29:58,719 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-25 21:29:58,719 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-25 21:29:58,724 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-25 21:29:58,725 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-25 21:29:58,726 INFO L138 SettingsManager]: * Use SBE=true [2020-10-25 21:29:58,726 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-25 21:29:58,727 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-25 21:29:58,727 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-25 21:29:58,727 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-25 21:29:58,727 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-25 21:29:58,729 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-25 21:29:58,729 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-25 21:29:58,729 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-25 21:29:58,730 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-25 21:29:58,730 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-25 21:29:58,730 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-25 21:29:58,730 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-25 21:29:58,731 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-25 21:29:58,731 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-25 21:29:58,731 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-25 21:29:58,732 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-25 21:29:58,732 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-25 21:29:58,732 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-25 21:29:58,733 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-25 21:29:58,733 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-25 21:29:58,733 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-25 21:29:58,733 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-25 21:29:58,734 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-25 21:29:58,734 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-25 21:29:58,734 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-25 21:29:58,734 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-25 21:29:58,735 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c899a11b075f77e8271e38f51a1c9ce4fc2e25ab [2020-10-25 21:29:59,211 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-25 21:29:59,257 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-25 21:29:59,263 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-25 21:29:59,265 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-25 21:29:59,266 INFO L275 PluginConnector]: CDTParser initialized [2020-10-25 21:29:59,267 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cdfpl/newton_1_6.i [2020-10-25 21:29:59,360 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f79692ae/5b9f341e72234387996f877047426a69/FLAGfe9e2fe7c [2020-10-25 21:30:00,105 INFO L306 CDTParser]: Found 1 translation units. [2020-10-25 21:30:00,107 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_1_6.i [2020-10-25 21:30:00,118 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f79692ae/5b9f341e72234387996f877047426a69/FLAGfe9e2fe7c [2020-10-25 21:30:00,440 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f79692ae/5b9f341e72234387996f877047426a69 [2020-10-25 21:30:00,444 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-25 21:30:00,451 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-25 21:30:00,454 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-25 21:30:00,455 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-25 21:30:00,460 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-25 21:30:00,461 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 09:30:00" (1/1) ... [2020-10-25 21:30:00,466 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cb96a7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:30:00, skipping insertion in model container [2020-10-25 21:30:00,467 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 09:30:00" (1/1) ... [2020-10-25 21:30:00,475 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-25 21:30:00,497 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-25 21:30:00,707 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 21:30:00,723 INFO L203 MainTranslator]: Completed pre-run [2020-10-25 21:30:00,748 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 21:30:00,768 INFO L208 MainTranslator]: Completed translation [2020-10-25 21:30:00,769 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:30:00 WrapperNode [2020-10-25 21:30:00,769 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-25 21:30:00,771 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-25 21:30:00,771 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-25 21:30:00,771 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-25 21:30:00,781 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:30:00" (1/1) ... [2020-10-25 21:30:00,793 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:30:00" (1/1) ... [2020-10-25 21:30:00,816 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-25 21:30:00,817 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-25 21:30:00,818 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-25 21:30:00,818 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-25 21:30:00,829 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:30:00" (1/1) ... [2020-10-25 21:30:00,829 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:30:00" (1/1) ... [2020-10-25 21:30:00,833 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:30:00" (1/1) ... [2020-10-25 21:30:00,834 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:30:00" (1/1) ... [2020-10-25 21:30:00,842 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:30:00" (1/1) ... [2020-10-25 21:30:00,845 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:30:00" (1/1) ... [2020-10-25 21:30:00,848 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:30:00" (1/1) ... [2020-10-25 21:30:00,855 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-25 21:30:00,860 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-25 21:30:00,860 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-25 21:30:00,861 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-25 21:30:00,862 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:30:00" (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 [2020-10-25 21:30:00,933 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-25 21:30:00,933 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-25 21:30:00,933 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-25 21:30:00,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-25 21:30:07,835 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-25 21:30:07,836 INFO L298 CfgBuilder]: Removed 12 assume(true) statements. [2020-10-25 21:30:07,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 09:30:07 BoogieIcfgContainer [2020-10-25 21:30:07,849 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-25 21:30:07,857 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-25 21:30:07,859 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-25 21:30:07,868 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-25 21:30:07,872 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 09:30:00" (1/3) ... [2020-10-25 21:30:07,874 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@617c42f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 09:30:07, skipping insertion in model container [2020-10-25 21:30:07,874 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:30:00" (2/3) ... [2020-10-25 21:30:07,875 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@617c42f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 09:30:07, skipping insertion in model container [2020-10-25 21:30:07,877 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 09:30:07" (3/3) ... [2020-10-25 21:30:07,882 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_1_6.i [2020-10-25 21:30:07,912 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-25 21:30:07,926 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-25 21:30:07,948 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-25 21:30:07,985 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-25 21:30:07,986 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-25 21:30:07,986 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-25 21:30:07,986 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-25 21:30:07,987 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-25 21:30:07,987 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-25 21:30:07,987 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-25 21:30:07,987 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-25 21:30:08,000 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2020-10-25 21:30:08,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-25 21:30:08,006 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 21:30:08,007 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 21:30:08,008 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 21:30:08,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 21:30:08,014 INFO L82 PathProgramCache]: Analyzing trace with hash -595084600, now seen corresponding path program 1 times [2020-10-25 21:30:08,025 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-25 21:30:08,025 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [368418420] [2020-10-25 21:30:08,025 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 [2020-10-25 21:30:09,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 21:30:09,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 1 conjunts are in the unsatisfiable core [2020-10-25 21:30:09,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 21:30:09,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 21:30:09,354 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-25 21:30:09,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 21:30:09,359 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [368418420] [2020-10-25 21:30:09,360 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-25 21:30:09,360 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-25 21:30:09,361 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798352119] [2020-10-25 21:30:09,365 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-25 21:30:09,365 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-25 21:30:09,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-25 21:30:09,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-25 21:30:09,381 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 2 states. [2020-10-25 21:30:09,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 21:30:09,405 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2020-10-25 21:30:09,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-25 21:30:09,406 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2020-10-25 21:30:09,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 21:30:09,415 INFO L225 Difference]: With dead ends: 25 [2020-10-25 21:30:09,415 INFO L226 Difference]: Without dead ends: 10 [2020-10-25 21:30:09,418 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 [2020-10-25 21:30:09,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-10-25 21:30:09,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2020-10-25 21:30:09,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-10-25 21:30:09,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 9 transitions. [2020-10-25 21:30:09,455 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 9 transitions. Word has length 9 [2020-10-25 21:30:09,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 21:30:09,455 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 9 transitions. [2020-10-25 21:30:09,455 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-25 21:30:09,456 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 9 transitions. [2020-10-25 21:30:09,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-25 21:30:09,456 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 21:30:09,456 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 21:30:09,672 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-25 21:30:09,673 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 21:30:09,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 21:30:09,674 INFO L82 PathProgramCache]: Analyzing trace with hash 1179922762, now seen corresponding path program 1 times [2020-10-25 21:30:09,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-25 21:30:09,677 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1334322846] [2020-10-25 21:30:09,677 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 [2020-10-25 21:30:18,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-25 21:30:18,177 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-25 21:31:22,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-25 21:31:22,495 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-25 21:31:22,618 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-10-25 21:31:22,619 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-25 21:31:22,820 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-25 21:31:22,859 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 09:31:22 BoogieIcfgContainer [2020-10-25 21:31:22,860 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-25 21:31:22,861 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-25 21:31:22,861 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-25 21:31:22,861 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-25 21:31:22,862 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 09:30:07" (3/4) ... [2020-10-25 21:31:22,865 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-25 21:31:22,932 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-25 21:31:22,932 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-25 21:31:22,935 INFO L168 Benchmark]: Toolchain (without parser) took 82487.96 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 24.9 MB in the beginning and 40.4 MB in the end (delta: -15.5 MB). Peak memory consumption was 15.8 MB. Max. memory is 16.1 GB. [2020-10-25 21:31:22,936 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 48.2 MB. Free memory was 31.8 MB in the beginning and 31.7 MB in the end (delta: 84.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 21:31:22,937 INFO L168 Benchmark]: CACSL2BoogieTranslator took 315.80 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 24.3 MB in the beginning and 35.5 MB in the end (delta: -11.2 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. [2020-10-25 21:31:22,938 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.69 ms. Allocated memory is still 58.7 MB. Free memory was 35.4 MB in the beginning and 33.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 21:31:22,939 INFO L168 Benchmark]: Boogie Preprocessor took 38.50 ms. Allocated memory is still 58.7 MB. Free memory was 33.9 MB in the beginning and 32.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 21:31:22,940 INFO L168 Benchmark]: RCFGBuilder took 6989.57 ms. Allocated memory is still 58.7 MB. Free memory was 32.5 MB in the beginning and 36.3 MB in the end (delta: -3.8 MB). Peak memory consumption was 9.9 MB. Max. memory is 16.1 GB. [2020-10-25 21:31:22,941 INFO L168 Benchmark]: TraceAbstraction took 75002.97 ms. Allocated memory is still 58.7 MB. Free memory was 35.8 MB in the beginning and 25.4 MB in the end (delta: 10.4 MB). Peak memory consumption was 9.2 MB. Max. memory is 16.1 GB. [2020-10-25 21:31:22,942 INFO L168 Benchmark]: Witness Printer took 71.67 ms. Allocated memory is still 58.7 MB. Free memory was 25.1 MB in the beginning and 40.4 MB in the end (delta: -15.4 MB). Peak memory consumption was 3.9 MB. Max. memory is 16.1 GB. [2020-10-25 21:31:22,946 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 48.2 MB. Free memory was 31.8 MB in the beginning and 31.7 MB in the end (delta: 84.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 315.80 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 24.3 MB in the beginning and 35.5 MB in the end (delta: -11.2 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 45.69 ms. Allocated memory is still 58.7 MB. Free memory was 35.4 MB in the beginning and 33.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 38.50 ms. Allocated memory is still 58.7 MB. Free memory was 33.9 MB in the beginning and 32.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 6989.57 ms. Allocated memory is still 58.7 MB. Free memory was 32.5 MB in the beginning and 36.3 MB in the end (delta: -3.8 MB). Peak memory consumption was 9.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 75002.97 ms. Allocated memory is still 58.7 MB. Free memory was 35.8 MB in the beginning and 25.4 MB in the end (delta: 10.4 MB). Peak memory consumption was 9.2 MB. Max. memory is 16.1 GB. * Witness Printer took 71.67 ms. Allocated memory is still 58.7 MB. Free memory was 25.1 MB in the beginning and 40.4 MB in the end (delta: -15.4 MB). Peak memory consumption was 3.9 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_6.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: 74.8s, 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, 9.6s 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...