./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 9a8b2e8d 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_1.3.100.v20150511-1540.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_1.3.100.v20150511-1540.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 0.1.25-9a8b2e8 [2020-10-20 00:10:57,939 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 00:10:57,942 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 00:10:57,987 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 00:10:57,988 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 00:10:58,000 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 00:10:58,001 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 00:10:58,004 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 00:10:58,007 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 00:10:58,010 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 00:10:58,011 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 00:10:58,013 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 00:10:58,016 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 00:10:58,017 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 00:10:58,018 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 00:10:58,018 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 00:10:58,019 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 00:10:58,020 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 00:10:58,021 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 00:10:58,027 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 00:10:58,029 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 00:10:58,031 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 00:10:58,033 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 00:10:58,035 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 00:10:58,037 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 00:10:58,038 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 00:10:58,038 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 00:10:58,048 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 00:10:58,050 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 00:10:58,051 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 00:10:58,051 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 00:10:58,052 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 00:10:58,053 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 00:10:58,053 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 00:10:58,055 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 00:10:58,055 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 00:10:58,056 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 00:10:58,056 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 00:10:58,057 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 00:10:58,058 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 00:10:58,059 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 00:10:58,060 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 00:10:58,108 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 00:10:58,108 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 00:10:58,111 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 00:10:58,111 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 00:10:58,111 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 00:10:58,112 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 00:10:58,112 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 00:10:58,112 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 00:10:58,112 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 00:10:58,113 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 00:10:58,114 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 00:10:58,114 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 00:10:58,114 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 00:10:58,115 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 00:10:58,115 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 00:10:58,116 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 00:10:58,116 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 00:10:58,116 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 00:10:58,116 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 00:10:58,117 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 00:10:58,117 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 00:10:58,117 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:10:58,117 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 00:10:58,118 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 00:10:58,118 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 00:10:58,118 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 00:10:58,118 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 00:10:58,119 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 00:10:58,119 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 00:10:58,119 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 [2020-10-20 00:10:58,342 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 00:10:58,357 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 00:10:58,362 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 00:10:58,364 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 00:10:58,365 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 00:10:58,366 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cdfpl/newton_1_8.i [2020-10-20 00:10:58,436 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f6e22e68/935e1ba90b8047df967c0233fe7da817/FLAG4233058d7 [2020-10-20 00:10:59,003 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 00:10:59,004 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_1_8.i [2020-10-20 00:10:59,011 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f6e22e68/935e1ba90b8047df967c0233fe7da817/FLAG4233058d7 [2020-10-20 00:10:59,390 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f6e22e68/935e1ba90b8047df967c0233fe7da817 [2020-10-20 00:10:59,393 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 00:10:59,400 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 00:10:59,401 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 00:10:59,401 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 00:10:59,405 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 00:10:59,406 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:10:59" (1/1) ... [2020-10-20 00:10:59,411 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71795591 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:10:59, skipping insertion in model container [2020-10-20 00:10:59,411 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:10:59" (1/1) ... [2020-10-20 00:10:59,418 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 00:10:59,435 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 00:10:59,657 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:10:59,668 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 00:10:59,690 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:10:59,708 INFO L208 MainTranslator]: Completed translation [2020-10-20 00:10:59,708 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:10:59 WrapperNode [2020-10-20 00:10:59,709 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 00:10:59,710 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 00:10:59,710 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 00:10:59,710 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 00:10:59,720 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:10:59" (1/1) ... [2020-10-20 00:10:59,729 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:10:59" (1/1) ... [2020-10-20 00:10:59,753 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 00:10:59,753 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 00:10:59,753 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 00:10:59,754 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 00:10:59,763 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:10:59" (1/1) ... [2020-10-20 00:10:59,764 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:10:59" (1/1) ... [2020-10-20 00:10:59,766 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:10:59" (1/1) ... [2020-10-20 00:10:59,766 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:10:59" (1/1) ... [2020-10-20 00:10:59,772 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:10:59" (1/1) ... [2020-10-20 00:10:59,774 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:10:59" (1/1) ... [2020-10-20 00:10:59,775 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:10:59" (1/1) ... [2020-10-20 00:10:59,778 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 00:10:59,778 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 00:10:59,778 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 00:10:59,779 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 00:10:59,780 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:10:59" (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 [2020-10-20 00:10:59,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 00:10:59,857 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 00:10:59,858 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 00:10:59,859 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 00:11:00,069 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 00:11:00,070 INFO L298 CfgBuilder]: Removed 12 assume(true) statements. [2020-10-20 00:11:00,072 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:11:00 BoogieIcfgContainer [2020-10-20 00:11:00,072 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 00:11:00,073 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 00:11:00,074 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 00:11:00,077 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 00:11:00,077 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 12:10:59" (1/3) ... [2020-10-20 00:11:00,078 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a301408 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:11:00, skipping insertion in model container [2020-10-20 00:11:00,079 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:10:59" (2/3) ... [2020-10-20 00:11:00,079 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a301408 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:11:00, skipping insertion in model container [2020-10-20 00:11:00,080 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:11:00" (3/3) ... [2020-10-20 00:11:00,081 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_1_8.i [2020-10-20 00:11:00,094 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 00:11:00,100 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 00:11:00,116 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-20 00:11:00,141 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 00:11:00,141 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 00:11:00,141 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 00:11:00,142 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 00:11:00,142 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 00:11:00,142 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 00:11:00,142 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 00:11:00,143 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 00:11:00,159 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2020-10-20 00:11:00,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-20 00:11:00,165 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:11:00,166 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:11:00,166 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:11:00,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:11:00,172 INFO L82 PathProgramCache]: Analyzing trace with hash -595084600, now seen corresponding path program 1 times [2020-10-20 00:11:00,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:11:00,182 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863465828] [2020-10-20 00:11:00,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:11:00,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:11:00,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:11:00,329 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863465828] [2020-10-20 00:11:00,330 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:11:00,330 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 00:11:00,331 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308956241] [2020-10-20 00:11:00,337 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 00:11:00,337 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 00:11:00,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 00:11:00,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 00:11:00,355 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 2 states. [2020-10-20 00:11:00,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:11:00,374 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2020-10-20 00:11:00,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 00:11:00,376 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2020-10-20 00:11:00,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:11:00,386 INFO L225 Difference]: With dead ends: 25 [2020-10-20 00:11:00,387 INFO L226 Difference]: Without dead ends: 10 [2020-10-20 00:11:00,391 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 [2020-10-20 00:11:00,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-10-20 00:11:00,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2020-10-20 00:11:00,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-10-20 00:11:00,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 9 transitions. [2020-10-20 00:11:00,426 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 9 transitions. Word has length 9 [2020-10-20 00:11:00,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:11:00,426 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 9 transitions. [2020-10-20 00:11:00,427 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 00:11:00,427 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 9 transitions. [2020-10-20 00:11:00,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-20 00:11:00,428 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:11:00,428 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:11:00,428 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 00:11:00,429 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:11:00,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:11:00,429 INFO L82 PathProgramCache]: Analyzing trace with hash 1179922762, now seen corresponding path program 1 times [2020-10-20 00:11:00,430 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:11:00,430 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405096704] [2020-10-20 00:11:00,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:11:00,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:11:00,453 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:11:00,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:11:00,470 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:11:00,496 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 00:11:00,497 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 00:11:00,499 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 00:11:00,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 12:11:00 BoogieIcfgContainer [2020-10-20 00:11:00,527 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 00:11:00,528 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 00:11:00,528 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 00:11:00,528 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 00:11:00,529 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:11:00" (3/4) ... [2020-10-20 00:11:00,534 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-20 00:11:00,534 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 00:11:00,537 INFO L168 Benchmark]: Toolchain (without parser) took 1141.24 ms. Allocated memory was 41.4 MB in the beginning and 43.5 MB in the end (delta: 2.1 MB). Free memory was 20.0 MB in the beginning and 11.1 MB in the end (delta: 8.9 MB). Peak memory consumption was 11.0 MB. Max. memory is 14.3 GB. [2020-10-20 00:11:00,538 INFO L168 Benchmark]: CDTParser took 0.89 ms. Allocated memory is still 31.5 MB. Free memory was 8.7 MB in the beginning and 8.7 MB in the end (delta: 45.8 kB). Peak memory consumption was 45.8 kB. Max. memory is 14.3 GB. [2020-10-20 00:11:00,540 INFO L168 Benchmark]: CACSL2BoogieTranslator took 308.38 ms. Allocated memory was 41.4 MB in the beginning and 41.9 MB in the end (delta: 524.3 kB). Free memory was 19.1 MB in the beginning and 19.3 MB in the end (delta: -201.1 kB). Peak memory consumption was 9.3 MB. Max. memory is 14.3 GB. [2020-10-20 00:11:00,541 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.35 ms. Allocated memory is still 41.9 MB. Free memory was 19.2 MB in the beginning and 17.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 14.3 GB. [2020-10-20 00:11:00,542 INFO L168 Benchmark]: Boogie Preprocessor took 24.57 ms. Allocated memory is still 41.9 MB. Free memory was 17.5 MB in the beginning and 16.2 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.2 MB. Max. memory is 14.3 GB. [2020-10-20 00:11:00,543 INFO L168 Benchmark]: RCFGBuilder took 294.13 ms. Allocated memory was 41.9 MB in the beginning and 43.0 MB in the end (delta: 1.0 MB). Free memory was 16.1 MB in the beginning and 20.1 MB in the end (delta: -4.0 MB). Peak memory consumption was 5.9 MB. Max. memory is 14.3 GB. [2020-10-20 00:11:00,544 INFO L168 Benchmark]: TraceAbstraction took 453.82 ms. Allocated memory was 43.0 MB in the beginning and 43.5 MB in the end (delta: 524.3 kB). Free memory was 19.5 MB in the beginning and 11.5 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.5 MB. Max. memory is 14.3 GB. [2020-10-20 00:11:00,545 INFO L168 Benchmark]: Witness Printer took 6.70 ms. Allocated memory is still 43.5 MB. Free memory was 11.5 MB in the beginning and 11.3 MB in the end (delta: 235.4 kB). Peak memory consumption was 235.4 kB. Max. memory is 14.3 GB. [2020-10-20 00:11:00,551 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.89 ms. Allocated memory is still 31.5 MB. Free memory was 8.7 MB in the beginning and 8.7 MB in the end (delta: 45.8 kB). Peak memory consumption was 45.8 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 308.38 ms. Allocated memory was 41.4 MB in the beginning and 41.9 MB in the end (delta: 524.3 kB). Free memory was 19.1 MB in the beginning and 19.3 MB in the end (delta: -201.1 kB). Peak memory consumption was 9.3 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 43.35 ms. Allocated memory is still 41.9 MB. Free memory was 19.2 MB in the beginning and 17.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 24.57 ms. Allocated memory is still 41.9 MB. Free memory was 17.5 MB in the beginning and 16.2 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.2 MB. Max. memory is 14.3 GB. * RCFGBuilder took 294.13 ms. Allocated memory was 41.9 MB in the beginning and 43.0 MB in the end (delta: 1.0 MB). Free memory was 16.1 MB in the beginning and 20.1 MB in the end (delta: -4.0 MB). Peak memory consumption was 5.9 MB. Max. memory is 14.3 GB. * TraceAbstraction took 453.82 ms. Allocated memory was 43.0 MB in the beginning and 43.5 MB in the end (delta: 524.3 kB). Free memory was 19.5 MB in the beginning and 11.5 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.5 MB. Max. memory is 14.3 GB. * Witness Printer took 6.70 ms. Allocated memory is still 43.5 MB. Free memory was 11.5 MB in the beginning and 11.3 MB in the end (delta: 235.4 kB). Peak memory consumption was 235.4 kB. Max. memory is 14.3 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: 0.3s, 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 0.1.25-9a8b2e8 [2020-10-20 00:11:02,692 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 00:11:02,695 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 00:11:02,721 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 00:11:02,722 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 00:11:02,724 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 00:11:02,727 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 00:11:02,733 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 00:11:02,735 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 00:11:02,740 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 00:11:02,741 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 00:11:02,743 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 00:11:02,745 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 00:11:02,747 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 00:11:02,748 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 00:11:02,751 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 00:11:02,752 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 00:11:02,756 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 00:11:02,758 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 00:11:02,761 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 00:11:02,773 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 00:11:02,775 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 00:11:02,776 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 00:11:02,777 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 00:11:02,779 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 00:11:02,780 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 00:11:02,780 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 00:11:02,781 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 00:11:02,781 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 00:11:02,782 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 00:11:02,782 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 00:11:02,783 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 00:11:02,784 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 00:11:02,785 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 00:11:02,786 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 00:11:02,786 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 00:11:02,787 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 00:11:02,787 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 00:11:02,787 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 00:11:02,788 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 00:11:02,789 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 00:11:02,790 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-10-20 00:11:02,816 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 00:11:02,816 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 00:11:02,817 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 00:11:02,818 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 00:11:02,818 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 00:11:02,818 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 00:11:02,819 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 00:11:02,819 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 00:11:02,819 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 00:11:02,819 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 00:11:02,820 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 00:11:02,820 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 00:11:02,820 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-20 00:11:02,820 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-20 00:11:02,821 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 00:11:02,821 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 00:11:02,821 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 00:11:02,821 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 00:11:02,822 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 00:11:02,822 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 00:11:02,822 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 00:11:02,823 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 00:11:02,823 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:11:02,825 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 00:11:02,825 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 00:11:02,825 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 00:11:02,826 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-20 00:11:02,826 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-20 00:11:02,826 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 00:11:02,826 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 00:11:02,827 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-20 00:11:02,827 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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 [2020-10-20 00:11:03,050 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 00:11:03,063 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 00:11:03,067 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 00:11:03,069 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 00:11:03,070 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 00:11:03,071 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cdfpl/newton_1_8.i [2020-10-20 00:11:03,149 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4584b07c6/3ca265ea11004cac8ca6ace29dfd67dd/FLAG9fca82f55 [2020-10-20 00:11:03,699 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 00:11:03,700 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_1_8.i [2020-10-20 00:11:03,710 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4584b07c6/3ca265ea11004cac8ca6ace29dfd67dd/FLAG9fca82f55 [2020-10-20 00:11:04,055 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4584b07c6/3ca265ea11004cac8ca6ace29dfd67dd [2020-10-20 00:11:04,058 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 00:11:04,064 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 00:11:04,066 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 00:11:04,066 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 00:11:04,069 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 00:11:04,070 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:11:04" (1/1) ... [2020-10-20 00:11:04,073 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44424484 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:11:04, skipping insertion in model container [2020-10-20 00:11:04,074 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:11:04" (1/1) ... [2020-10-20 00:11:04,082 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 00:11:04,106 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 00:11:04,335 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:11:04,351 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 00:11:04,375 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:11:04,394 INFO L208 MainTranslator]: Completed translation [2020-10-20 00:11:04,395 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:11:04 WrapperNode [2020-10-20 00:11:04,395 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 00:11:04,396 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 00:11:04,397 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 00:11:04,397 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 00:11:04,406 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:11:04" (1/1) ... [2020-10-20 00:11:04,417 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:11:04" (1/1) ... [2020-10-20 00:11:04,434 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 00:11:04,435 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 00:11:04,435 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 00:11:04,435 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 00:11:04,444 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:11:04" (1/1) ... [2020-10-20 00:11:04,444 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:11:04" (1/1) ... [2020-10-20 00:11:04,447 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:11:04" (1/1) ... [2020-10-20 00:11:04,448 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:11:04" (1/1) ... [2020-10-20 00:11:04,457 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:11:04" (1/1) ... [2020-10-20 00:11:04,460 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:11:04" (1/1) ... [2020-10-20 00:11:04,462 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:11:04" (1/1) ... [2020-10-20 00:11:04,466 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 00:11:04,469 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 00:11:04,470 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 00:11:04,470 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 00:11:04,471 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:11:04" (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 [2020-10-20 00:11:04,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-20 00:11:04,539 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 00:11:04,539 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 00:11:04,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 00:11:11,938 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 00:11:11,939 INFO L298 CfgBuilder]: Removed 12 assume(true) statements. [2020-10-20 00:11:11,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:11:11 BoogieIcfgContainer [2020-10-20 00:11:11,941 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 00:11:11,942 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 00:11:11,942 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 00:11:11,961 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 00:11:11,961 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 12:11:04" (1/3) ... [2020-10-20 00:11:11,962 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20032c6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:11:11, skipping insertion in model container [2020-10-20 00:11:11,963 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:11:04" (2/3) ... [2020-10-20 00:11:11,964 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20032c6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:11:11, skipping insertion in model container [2020-10-20 00:11:11,964 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:11:11" (3/3) ... [2020-10-20 00:11:11,966 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_1_8.i [2020-10-20 00:11:11,981 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 00:11:11,987 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 00:11:11,998 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-20 00:11:12,019 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 00:11:12,019 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 00:11:12,020 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 00:11:12,020 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 00:11:12,020 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 00:11:12,020 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 00:11:12,021 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 00:11:12,021 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 00:11:12,034 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2020-10-20 00:11:12,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-20 00:11:12,039 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:11:12,040 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:11:12,041 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:11:12,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:11:12,045 INFO L82 PathProgramCache]: Analyzing trace with hash -595084600, now seen corresponding path program 1 times [2020-10-20 00:11:12,067 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:11:12,067 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1465867601] [2020-10-20 00:11:12,068 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 [2020-10-20 00:11:13,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:11:13,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 1 conjunts are in the unsatisfiable core [2020-10-20 00:11:13,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:11:13,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:11:13,325 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 00:11:13,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:11:13,331 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1465867601] [2020-10-20 00:11:13,332 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:11:13,332 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-20 00:11:13,333 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710529615] [2020-10-20 00:11:13,337 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 00:11:13,338 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 00:11:13,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 00:11:13,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 00:11:13,350 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 2 states. [2020-10-20 00:11:13,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:11:13,367 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2020-10-20 00:11:13,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 00:11:13,368 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2020-10-20 00:11:13,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:11:13,379 INFO L225 Difference]: With dead ends: 25 [2020-10-20 00:11:13,379 INFO L226 Difference]: Without dead ends: 10 [2020-10-20 00:11:13,383 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 [2020-10-20 00:11:13,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-10-20 00:11:13,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2020-10-20 00:11:13,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-10-20 00:11:13,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 9 transitions. [2020-10-20 00:11:13,420 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 9 transitions. Word has length 9 [2020-10-20 00:11:13,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:11:13,420 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 9 transitions. [2020-10-20 00:11:13,420 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 00:11:13,421 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 9 transitions. [2020-10-20 00:11:13,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-20 00:11:13,421 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:11:13,422 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:11:13,636 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-20 00:11:13,637 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:11:13,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:11:13,638 INFO L82 PathProgramCache]: Analyzing trace with hash 1179922762, now seen corresponding path program 1 times [2020-10-20 00:11:13,640 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:11:13,640 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1174338553] [2020-10-20 00:11:13,641 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 [2020-10-20 00:11:18,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:11:18,990 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:12:10,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:12:10,069 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:12:10,243 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-10-20 00:12:10,243 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 00:12:10,445 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-20 00:12:10,477 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 12:12:10 BoogieIcfgContainer [2020-10-20 00:12:10,477 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 00:12:10,478 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 00:12:10,478 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 00:12:10,479 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 00:12:10,479 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:11:11" (3/4) ... [2020-10-20 00:12:10,482 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-20 00:12:10,528 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 00:12:10,528 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 00:12:10,531 INFO L168 Benchmark]: Toolchain (without parser) took 66470.73 ms. Allocated memory was 40.4 MB in the beginning and 44.0 MB in the end (delta: 3.7 MB). Free memory was 18.8 MB in the beginning and 14.8 MB in the end (delta: 3.9 MB). Peak memory consumption was 7.6 MB. Max. memory is 14.3 GB. [2020-10-20 00:12:10,532 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 30.9 MB. Free memory was 7.0 MB in the beginning and 6.9 MB in the end (delta: 43.7 kB). Peak memory consumption was 43.7 kB. Max. memory is 14.3 GB. [2020-10-20 00:12:10,533 INFO L168 Benchmark]: CACSL2BoogieTranslator took 330.16 ms. Allocated memory was 40.4 MB in the beginning and 41.4 MB in the end (delta: 1.0 MB). Free memory was 17.9 MB in the beginning and 17.2 MB in the end (delta: 697.3 kB). Peak memory consumption was 8.7 MB. Max. memory is 14.3 GB. [2020-10-20 00:12:10,534 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.20 ms. Allocated memory is still 41.4 MB. Free memory was 17.2 MB in the beginning and 15.4 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 14.3 GB. [2020-10-20 00:12:10,535 INFO L168 Benchmark]: Boogie Preprocessor took 31.75 ms. Allocated memory is still 41.4 MB. Free memory was 15.4 MB in the beginning and 13.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 14.3 GB. [2020-10-20 00:12:10,536 INFO L168 Benchmark]: RCFGBuilder took 7471.90 ms. Allocated memory was 41.4 MB in the beginning and 42.5 MB in the end (delta: 1.0 MB). Free memory was 13.9 MB in the beginning and 16.4 MB in the end (delta: -2.5 MB). Peak memory consumption was 3.6 MB. Max. memory is 14.3 GB. [2020-10-20 00:12:10,537 INFO L168 Benchmark]: TraceAbstraction took 58535.53 ms. Allocated memory was 42.5 MB in the beginning and 44.0 MB in the end (delta: 1.6 MB). Free memory was 15.9 MB in the beginning and 16.9 MB in the end (delta: -947.4 kB). Peak memory consumption was 625.5 kB. Max. memory is 14.3 GB. [2020-10-20 00:12:10,538 INFO L168 Benchmark]: Witness Printer took 50.38 ms. Allocated memory is still 44.0 MB. Free memory was 16.9 MB in the beginning and 14.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 14.3 GB. [2020-10-20 00:12:10,544 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 30.9 MB. Free memory was 7.0 MB in the beginning and 6.9 MB in the end (delta: 43.7 kB). Peak memory consumption was 43.7 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 330.16 ms. Allocated memory was 40.4 MB in the beginning and 41.4 MB in the end (delta: 1.0 MB). Free memory was 17.9 MB in the beginning and 17.2 MB in the end (delta: 697.3 kB). Peak memory consumption was 8.7 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 38.20 ms. Allocated memory is still 41.4 MB. Free memory was 17.2 MB in the beginning and 15.4 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 31.75 ms. Allocated memory is still 41.4 MB. Free memory was 15.4 MB in the beginning and 13.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 14.3 GB. * RCFGBuilder took 7471.90 ms. Allocated memory was 41.4 MB in the beginning and 42.5 MB in the end (delta: 1.0 MB). Free memory was 13.9 MB in the beginning and 16.4 MB in the end (delta: -2.5 MB). Peak memory consumption was 3.6 MB. Max. memory is 14.3 GB. * TraceAbstraction took 58535.53 ms. Allocated memory was 42.5 MB in the beginning and 44.0 MB in the end (delta: 1.6 MB). Free memory was 15.9 MB in the beginning and 16.9 MB in the end (delta: -947.4 kB). Peak memory consumption was 625.5 kB. Max. memory is 14.3 GB. * Witness Printer took 50.38 ms. Allocated memory is still 44.0 MB. Free memory was 16.9 MB in the beginning and 14.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 14.3 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: 58.4s, 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, 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...