./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/floats-cdfpl/newton_1_5.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_5.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 d9c72214a613f4a26e1c80cbce806993eed5c352 ............................................................................................................................................................................................................................................................................ 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_5.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 d9c72214a613f4a26e1c80cbce806993eed5c352 ........................................................................................................................................................................................................................................................................................ 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 21:29:43,449 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-25 21:29:43,454 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-25 21:29:43,519 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-25 21:29:43,520 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-25 21:29:43,525 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-25 21:29:43,529 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-25 21:29:43,537 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-25 21:29:43,541 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-25 21:29:43,549 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-25 21:29:43,550 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-25 21:29:43,555 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-25 21:29:43,555 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-25 21:29:43,557 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-25 21:29:43,558 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-25 21:29:43,560 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-25 21:29:43,562 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-25 21:29:43,563 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-25 21:29:43,565 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-25 21:29:43,568 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-25 21:29:43,570 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-25 21:29:43,574 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-25 21:29:43,575 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-25 21:29:43,577 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-25 21:29:43,580 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-25 21:29:43,580 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-25 21:29:43,581 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-25 21:29:43,582 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-25 21:29:43,583 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-25 21:29:43,584 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-25 21:29:43,585 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-25 21:29:43,586 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-25 21:29:43,587 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-25 21:29:43,588 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-25 21:29:43,589 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-25 21:29:43,589 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-25 21:29:43,590 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-25 21:29:43,591 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-25 21:29:43,591 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-25 21:29:43,593 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-25 21:29:43,594 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-25 21:29:43,595 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-25 21:29:43,623 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-25 21:29:43,624 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-25 21:29:43,625 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-25 21:29:43,626 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-25 21:29:43,626 INFO L138 SettingsManager]: * Use SBE=true [2020-10-25 21:29:43,626 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-25 21:29:43,627 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-25 21:29:43,627 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-25 21:29:43,627 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-25 21:29:43,628 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-25 21:29:43,628 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-25 21:29:43,628 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-25 21:29:43,628 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-25 21:29:43,629 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-25 21:29:43,629 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-25 21:29:43,629 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-25 21:29:43,629 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-25 21:29:43,630 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-25 21:29:43,630 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-25 21:29:43,630 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-25 21:29:43,631 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-25 21:29:43,631 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-25 21:29:43,631 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-25 21:29:43,632 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-25 21:29:43,632 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-25 21:29:43,632 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-25 21:29:43,632 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-25 21:29:43,633 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-25 21:29:43,633 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-25 21:29:43,633 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d9c72214a613f4a26e1c80cbce806993eed5c352 [2020-10-25 21:29:44,139 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-25 21:29:44,169 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-25 21:29:44,173 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-25 21:29:44,174 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-25 21:29:44,175 INFO L275 PluginConnector]: CDTParser initialized [2020-10-25 21:29:44,177 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cdfpl/newton_1_5.i [2020-10-25 21:29:44,264 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/375137368/a38db905d09e4b55937dabaffebe1756/FLAG2224217d4 [2020-10-25 21:29:44,834 INFO L306 CDTParser]: Found 1 translation units. [2020-10-25 21:29:44,835 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_1_5.i [2020-10-25 21:29:44,844 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/375137368/a38db905d09e4b55937dabaffebe1756/FLAG2224217d4 [2020-10-25 21:29:45,214 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/375137368/a38db905d09e4b55937dabaffebe1756 [2020-10-25 21:29:45,216 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-25 21:29:45,225 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-25 21:29:45,227 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-25 21:29:45,228 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-25 21:29:45,233 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-25 21:29:45,234 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 09:29:45" (1/1) ... [2020-10-25 21:29:45,249 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@109901e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:29:45, skipping insertion in model container [2020-10-25 21:29:45,249 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 09:29:45" (1/1) ... [2020-10-25 21:29:45,265 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-25 21:29:45,307 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-25 21:29:45,481 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 21:29:45,499 INFO L203 MainTranslator]: Completed pre-run [2020-10-25 21:29:45,522 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 21:29:45,539 INFO L208 MainTranslator]: Completed translation [2020-10-25 21:29:45,540 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:29:45 WrapperNode [2020-10-25 21:29:45,540 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-25 21:29:45,541 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-25 21:29:45,542 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-25 21:29:45,542 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-25 21:29:45,551 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:29:45" (1/1) ... [2020-10-25 21:29:45,560 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:29:45" (1/1) ... [2020-10-25 21:29:45,582 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-25 21:29:45,584 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-25 21:29:45,584 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-25 21:29:45,584 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-25 21:29:45,594 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:29:45" (1/1) ... [2020-10-25 21:29:45,594 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:29:45" (1/1) ... [2020-10-25 21:29:45,596 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:29:45" (1/1) ... [2020-10-25 21:29:45,596 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:29:45" (1/1) ... [2020-10-25 21:29:45,602 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:29:45" (1/1) ... [2020-10-25 21:29:45,605 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:29:45" (1/1) ... [2020-10-25 21:29:45,606 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:29:45" (1/1) ... [2020-10-25 21:29:45,609 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-25 21:29:45,610 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-25 21:29:45,610 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-25 21:29:45,610 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-25 21:29:45,611 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:29:45" (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 21:29:45,710 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-25 21:29:45,710 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-25 21:29:45,711 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-25 21:29:45,712 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-25 21:29:45,927 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-25 21:29:45,928 INFO L298 CfgBuilder]: Removed 12 assume(true) statements. [2020-10-25 21:29:45,930 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 09:29:45 BoogieIcfgContainer [2020-10-25 21:29:45,931 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-25 21:29:45,932 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-25 21:29:45,933 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-25 21:29:45,936 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-25 21:29:45,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 09:29:45" (1/3) ... [2020-10-25 21:29:45,938 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d08ffcc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 09:29:45, skipping insertion in model container [2020-10-25 21:29:45,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:29:45" (2/3) ... [2020-10-25 21:29:45,939 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d08ffcc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 09:29:45, skipping insertion in model container [2020-10-25 21:29:45,939 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 09:29:45" (3/3) ... [2020-10-25 21:29:45,941 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_1_5.i [2020-10-25 21:29:45,955 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-25 21:29:45,960 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-25 21:29:45,976 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-25 21:29:46,055 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-25 21:29:46,055 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-25 21:29:46,056 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-25 21:29:46,056 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-25 21:29:46,056 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-25 21:29:46,056 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-25 21:29:46,056 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-25 21:29:46,057 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-25 21:29:46,086 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2020-10-25 21:29:46,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-25 21:29:46,092 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 21:29:46,093 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 21:29:46,093 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 21:29:46,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 21:29:46,101 INFO L82 PathProgramCache]: Analyzing trace with hash -595084600, now seen corresponding path program 1 times [2020-10-25 21:29:46,116 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 21:29:46,118 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914672493] [2020-10-25 21:29:46,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 21:29:46,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 21:29:46,358 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 21:29:46,359 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914672493] [2020-10-25 21:29:46,360 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 21:29:46,361 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-25 21:29:46,362 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759930083] [2020-10-25 21:29:46,370 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-25 21:29:46,371 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 21:29:46,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-25 21:29:46,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-25 21:29:46,395 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 2 states. [2020-10-25 21:29:46,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 21:29:46,420 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2020-10-25 21:29:46,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-25 21:29:46,422 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2020-10-25 21:29:46,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 21:29:46,431 INFO L225 Difference]: With dead ends: 25 [2020-10-25 21:29:46,431 INFO L226 Difference]: Without dead ends: 10 [2020-10-25 21:29:46,436 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 21:29:46,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-10-25 21:29:46,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2020-10-25 21:29:46,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-10-25 21:29:46,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 9 transitions. [2020-10-25 21:29:46,471 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 9 transitions. Word has length 9 [2020-10-25 21:29:46,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 21:29:46,471 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 9 transitions. [2020-10-25 21:29:46,472 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-25 21:29:46,472 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 9 transitions. [2020-10-25 21:29:46,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-25 21:29:46,473 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 21:29:46,473 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 21:29:46,473 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-25 21:29:46,474 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 21:29:46,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 21:29:46,475 INFO L82 PathProgramCache]: Analyzing trace with hash 1179922762, now seen corresponding path program 1 times [2020-10-25 21:29:46,475 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 21:29:46,475 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408454369] [2020-10-25 21:29:46,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 21:29:46,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-25 21:29:46,501 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-25 21:29:46,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-25 21:29:46,538 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-25 21:29:46,567 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-25 21:29:46,568 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-25 21:29:46,569 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-25 21:29:46,596 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 09:29:46 BoogieIcfgContainer [2020-10-25 21:29:46,596 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-25 21:29:46,597 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-25 21:29:46,598 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-25 21:29:46,598 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-25 21:29:46,599 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 09:29:45" (3/4) ... [2020-10-25 21:29:46,603 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-25 21:29:46,603 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-25 21:29:46,606 INFO L168 Benchmark]: Toolchain (without parser) took 1386.35 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 23.0 MB in the beginning and 32.1 MB in the end (delta: -9.1 MB). Peak memory consumption was 3.2 MB. Max. memory is 16.1 GB. [2020-10-25 21:29:46,607 INFO L168 Benchmark]: CDTParser took 0.37 ms. Allocated memory is still 46.1 MB. Free memory was 25.4 MB in the beginning and 25.4 MB in the end (delta: 33.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 21:29:46,609 INFO L168 Benchmark]: CACSL2BoogieTranslator took 313.07 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 22.3 MB in the beginning and 32.2 MB in the end (delta: -9.9 MB). Peak memory consumption was 3.2 MB. Max. memory is 16.1 GB. [2020-10-25 21:29:46,610 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.44 ms. Allocated memory is still 56.6 MB. Free memory was 32.2 MB in the beginning and 30.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 21:29:46,611 INFO L168 Benchmark]: Boogie Preprocessor took 25.49 ms. Allocated memory is still 56.6 MB. Free memory was 30.8 MB in the beginning and 29.8 MB in the end (delta: 955.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 21:29:46,612 INFO L168 Benchmark]: RCFGBuilder took 320.90 ms. Allocated memory is still 56.6 MB. Free memory was 29.6 MB in the beginning and 34.4 MB in the end (delta: -4.7 MB). Peak memory consumption was 9.9 MB. Max. memory is 16.1 GB. [2020-10-25 21:29:46,613 INFO L168 Benchmark]: TraceAbstraction took 664.20 ms. Allocated memory is still 56.6 MB. Free memory was 34.0 MB in the beginning and 32.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 632.4 kB. Max. memory is 16.1 GB. [2020-10-25 21:29:46,613 INFO L168 Benchmark]: Witness Printer took 6.22 ms. Allocated memory is still 56.6 MB. Free memory was 32.6 MB in the beginning and 32.4 MB in the end (delta: 249.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 21:29:46,619 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37 ms. Allocated memory is still 46.1 MB. Free memory was 25.4 MB in the beginning and 25.4 MB in the end (delta: 33.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 313.07 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 22.3 MB in the beginning and 32.2 MB in the end (delta: -9.9 MB). Peak memory consumption was 3.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 41.44 ms. Allocated memory is still 56.6 MB. Free memory was 32.2 MB in the beginning and 30.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 25.49 ms. Allocated memory is still 56.6 MB. Free memory was 30.8 MB in the beginning and 29.8 MB in the end (delta: 955.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 320.90 ms. Allocated memory is still 56.6 MB. Free memory was 29.6 MB in the beginning and 34.4 MB in the end (delta: -4.7 MB). Peak memory consumption was 9.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 664.20 ms. Allocated memory is still 56.6 MB. Free memory was 34.0 MB in the beginning and 32.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 632.4 kB. Max. memory is 16.1 GB. * Witness Printer took 6.22 ms. Allocated memory is still 56.6 MB. Free memory was 32.6 MB in the beginning and 32.4 MB in the end (delta: 249.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 12]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 31, overapproximation of someBinaryDOUBLEComparisonOperation at line 41, overapproximation of someBinaryArithmeticFLOAToperation at line 33. Possible FailurePath: [L30] float IN = __VERIFIER_nondet_float(); [L15] COND FALSE !(!cond) [L20] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L25] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L33] float x = IN - f(IN)/fp(IN); [L41] COND TRUE !(x < 0.1) [L12] COND FALSE !(0) [L12] __assert_fail ("0", "newton_1_5.c", 3, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 13 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 64 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-5485861 [2020-10-25 21:29:49,245 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-25 21:29:49,250 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-25 21:29:49,292 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-25 21:29:49,293 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-25 21:29:49,294 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-25 21:29:49,296 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-25 21:29:49,299 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-25 21:29:49,301 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-25 21:29:49,302 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-25 21:29:49,304 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-25 21:29:49,305 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-25 21:29:49,306 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-25 21:29:49,307 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-25 21:29:49,309 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-25 21:29:49,311 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-25 21:29:49,312 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-25 21:29:49,313 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-25 21:29:49,315 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-25 21:29:49,318 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-25 21:29:49,320 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-25 21:29:49,322 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-25 21:29:49,324 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-25 21:29:49,325 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-25 21:29:49,329 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-25 21:29:49,330 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-25 21:29:49,330 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-25 21:29:49,331 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-25 21:29:49,332 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-25 21:29:49,333 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-25 21:29:49,334 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-25 21:29:49,335 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-25 21:29:49,336 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-25 21:29:49,337 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-25 21:29:49,339 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-25 21:29:49,339 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-25 21:29:49,341 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-25 21:29:49,341 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-25 21:29:49,341 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-25 21:29:49,343 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-25 21:29:49,344 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-25 21:29:49,345 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-10-25 21:29:49,391 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-25 21:29:49,391 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-25 21:29:49,393 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-25 21:29:49,393 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-25 21:29:49,394 INFO L138 SettingsManager]: * Use SBE=true [2020-10-25 21:29:49,394 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-25 21:29:49,394 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-25 21:29:49,394 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-25 21:29:49,395 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-25 21:29:49,395 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-25 21:29:49,395 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-25 21:29:49,396 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-25 21:29:49,396 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-25 21:29:49,396 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-25 21:29:49,396 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-25 21:29:49,397 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-25 21:29:49,397 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-25 21:29:49,397 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-25 21:29:49,397 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-25 21:29:49,398 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-25 21:29:49,398 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-25 21:29:49,398 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-25 21:29:49,398 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-25 21:29:49,399 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-25 21:29:49,399 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-25 21:29:49,399 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-25 21:29:49,400 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-25 21:29:49,400 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-25 21:29:49,400 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-25 21:29:49,400 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-25 21:29:49,401 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-25 21:29:49,401 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d9c72214a613f4a26e1c80cbce806993eed5c352 [2020-10-25 21:29:49,796 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-25 21:29:49,847 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-25 21:29:49,852 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-25 21:29:49,854 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-25 21:29:49,855 INFO L275 PluginConnector]: CDTParser initialized [2020-10-25 21:29:49,856 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cdfpl/newton_1_5.i [2020-10-25 21:29:49,937 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99c70f1e7/f15dc0f46aa143dea092b04b641ea56a/FLAG23bd87f7c [2020-10-25 21:29:50,601 INFO L306 CDTParser]: Found 1 translation units. [2020-10-25 21:29:50,603 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_1_5.i [2020-10-25 21:29:50,614 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99c70f1e7/f15dc0f46aa143dea092b04b641ea56a/FLAG23bd87f7c [2020-10-25 21:29:50,934 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99c70f1e7/f15dc0f46aa143dea092b04b641ea56a [2020-10-25 21:29:50,937 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-25 21:29:50,946 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-25 21:29:50,949 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-25 21:29:50,949 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-25 21:29:50,961 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-25 21:29:50,963 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 09:29:50" (1/1) ... [2020-10-25 21:29:50,968 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5322951 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:29:50, skipping insertion in model container [2020-10-25 21:29:50,969 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 09:29:50" (1/1) ... [2020-10-25 21:29:50,978 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-25 21:29:50,999 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-25 21:29:51,171 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 21:29:51,186 INFO L203 MainTranslator]: Completed pre-run [2020-10-25 21:29:51,209 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 21:29:51,228 INFO L208 MainTranslator]: Completed translation [2020-10-25 21:29:51,229 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:29:51 WrapperNode [2020-10-25 21:29:51,229 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-25 21:29:51,230 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-25 21:29:51,231 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-25 21:29:51,231 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-25 21:29:51,240 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:29:51" (1/1) ... [2020-10-25 21:29:51,252 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:29:51" (1/1) ... [2020-10-25 21:29:51,274 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-25 21:29:51,276 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-25 21:29:51,276 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-25 21:29:51,276 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-25 21:29:51,285 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:29:51" (1/1) ... [2020-10-25 21:29:51,286 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:29:51" (1/1) ... [2020-10-25 21:29:51,296 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:29:51" (1/1) ... [2020-10-25 21:29:51,297 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:29:51" (1/1) ... [2020-10-25 21:29:51,306 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:29:51" (1/1) ... [2020-10-25 21:29:51,308 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:29:51" (1/1) ... [2020-10-25 21:29:51,311 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:29:51" (1/1) ... [2020-10-25 21:29:51,315 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-25 21:29:51,316 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-25 21:29:51,317 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-25 21:29:51,317 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-25 21:29:51,318 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:29:51" (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 21:29:51,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-25 21:29:51,406 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-25 21:29:51,406 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-25 21:29:51,406 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-25 21:29:58,495 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-25 21:29:58,496 INFO L298 CfgBuilder]: Removed 12 assume(true) statements. [2020-10-25 21:29:58,499 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 09:29:58 BoogieIcfgContainer [2020-10-25 21:29:58,500 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-25 21:29:58,516 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-25 21:29:58,520 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-25 21:29:58,525 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-25 21:29:58,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 09:29:50" (1/3) ... [2020-10-25 21:29:58,526 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74c343aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 09:29:58, skipping insertion in model container [2020-10-25 21:29:58,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:29:51" (2/3) ... [2020-10-25 21:29:58,527 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74c343aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 09:29:58, skipping insertion in model container [2020-10-25 21:29:58,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 09:29:58" (3/3) ... [2020-10-25 21:29:58,529 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_1_5.i [2020-10-25 21:29:58,543 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-25 21:29:58,549 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-25 21:29:58,564 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-25 21:29:58,594 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-25 21:29:58,594 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-25 21:29:58,595 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-25 21:29:58,595 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-25 21:29:58,595 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-25 21:29:58,595 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-25 21:29:58,596 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-25 21:29:58,596 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-25 21:29:58,616 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2020-10-25 21:29:58,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-25 21:29:58,639 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 21:29:58,641 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 21:29:58,642 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 21:29:58,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 21:29:58,653 INFO L82 PathProgramCache]: Analyzing trace with hash -595084600, now seen corresponding path program 1 times [2020-10-25 21:29:58,664 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-25 21:29:58,665 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1231727824] [2020-10-25 21:29:58,666 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 21:29:59,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 21:29:59,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 1 conjunts are in the unsatisfiable core [2020-10-25 21:29:59,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 21:29:59,934 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 21:29:59,935 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-25 21:29:59,939 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 21:29:59,940 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1231727824] [2020-10-25 21:29:59,941 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-25 21:29:59,941 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-25 21:29:59,942 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044795098] [2020-10-25 21:29:59,946 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-25 21:29:59,947 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-25 21:29:59,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-25 21:29:59,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-25 21:29:59,965 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 2 states. [2020-10-25 21:29:59,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 21:29:59,982 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2020-10-25 21:29:59,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-25 21:29:59,984 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2020-10-25 21:29:59,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 21:29:59,994 INFO L225 Difference]: With dead ends: 25 [2020-10-25 21:29:59,994 INFO L226 Difference]: Without dead ends: 10 [2020-10-25 21:29:59,997 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 21:30:00,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-10-25 21:30:00,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2020-10-25 21:30:00,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-10-25 21:30:00,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 9 transitions. [2020-10-25 21:30:00,035 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 9 transitions. Word has length 9 [2020-10-25 21:30:00,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 21:30:00,035 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 9 transitions. [2020-10-25 21:30:00,035 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-25 21:30:00,036 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 9 transitions. [2020-10-25 21:30:00,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-25 21:30:00,036 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 21:30:00,037 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 21:30:00,250 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-25 21:30:00,251 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 21:30:00,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 21:30:00,254 INFO L82 PathProgramCache]: Analyzing trace with hash 1179922762, now seen corresponding path program 1 times [2020-10-25 21:30:00,255 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-25 21:30:00,255 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [753393623] [2020-10-25 21:30:00,255 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 21:30:25,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-25 21:30:25,017 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-25 21:30:37,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-25 21:30:37,753 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-25 21:30:37,899 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-10-25 21:30:37,899 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-25 21:30:38,101 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-25 21:30:38,137 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 09:30:38 BoogieIcfgContainer [2020-10-25 21:30:38,137 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-25 21:30:38,138 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-25 21:30:38,138 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-25 21:30:38,138 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-25 21:30:38,139 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 09:29:58" (3/4) ... [2020-10-25 21:30:38,141 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-25 21:30:38,191 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-25 21:30:38,192 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-25 21:30:38,195 INFO L168 Benchmark]: Toolchain (without parser) took 47253.76 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 23.2 MB in the beginning and 38.6 MB in the end (delta: -15.4 MB). Peak memory consumption was 17.8 MB. Max. memory is 16.1 GB. [2020-10-25 21:30:38,196 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 46.1 MB. Free memory was 28.9 MB in the beginning and 28.9 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 21:30:38,197 INFO L168 Benchmark]: CACSL2BoogieTranslator took 280.86 ms. Allocated memory is still 46.1 MB. Free memory was 22.6 MB in the beginning and 21.5 MB in the end (delta: 1.1 MB). Peak memory consumption was 5.3 MB. Max. memory is 16.1 GB. [2020-10-25 21:30:38,198 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.58 ms. Allocated memory is still 46.1 MB. Free memory was 21.3 MB in the beginning and 19.9 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 21:30:38,199 INFO L168 Benchmark]: Boogie Preprocessor took 39.43 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 19.9 MB in the beginning and 40.6 MB in the end (delta: -20.8 MB). Peak memory consumption was 3.0 MB. Max. memory is 16.1 GB. [2020-10-25 21:30:38,200 INFO L168 Benchmark]: RCFGBuilder took 7184.20 ms. Allocated memory is still 56.6 MB. Free memory was 40.6 MB in the beginning and 29.0 MB in the end (delta: 11.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-10-25 21:30:38,201 INFO L168 Benchmark]: TraceAbstraction took 39621.50 ms. Allocated memory is still 56.6 MB. Free memory was 28.7 MB in the beginning and 21.8 MB in the end (delta: 6.9 MB). Peak memory consumption was 5.3 MB. Max. memory is 16.1 GB. [2020-10-25 21:30:38,202 INFO L168 Benchmark]: Witness Printer took 53.90 ms. Allocated memory is still 56.6 MB. Free memory was 21.8 MB in the beginning and 38.6 MB in the end (delta: -16.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-10-25 21:30:38,208 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 46.1 MB. Free memory was 28.9 MB in the beginning and 28.9 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 280.86 ms. Allocated memory is still 46.1 MB. Free memory was 22.6 MB in the beginning and 21.5 MB in the end (delta: 1.1 MB). Peak memory consumption was 5.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 44.58 ms. Allocated memory is still 46.1 MB. Free memory was 21.3 MB in the beginning and 19.9 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 39.43 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 19.9 MB in the beginning and 40.6 MB in the end (delta: -20.8 MB). Peak memory consumption was 3.0 MB. Max. memory is 16.1 GB. * RCFGBuilder took 7184.20 ms. Allocated memory is still 56.6 MB. Free memory was 40.6 MB in the beginning and 29.0 MB in the end (delta: 11.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 39621.50 ms. Allocated memory is still 56.6 MB. Free memory was 28.7 MB in the beginning and 21.8 MB in the end (delta: 6.9 MB). Peak memory consumption was 5.3 MB. Max. memory is 16.1 GB. * Witness Printer took 53.90 ms. Allocated memory is still 56.6 MB. Free memory was 21.8 MB in the beginning and 38.6 MB in the end (delta: -16.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 12]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L30] float IN = __VERIFIER_nondet_float(); [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_5.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: 39.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 13 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 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, 25.8s 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...