./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 ee8e70e7 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/floats-cdfpl/newton_1_5.i -s /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-2/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-2/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/floats-cdfpl/newton_1_5.i -s /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-2/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-ee8e70e [2020-10-24 13:46:08,531 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 13:46:08,536 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 13:46:08,588 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-24 13:46:08,589 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-24 13:46:08,590 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-24 13:46:08,592 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-24 13:46:08,595 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-24 13:46:08,597 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-24 13:46:08,599 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-24 13:46:08,600 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-24 13:46:08,602 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-24 13:46:08,603 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 13:46:08,604 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 13:46:08,606 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 13:46:08,607 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 13:46:08,608 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 13:46:08,609 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 13:46:08,612 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 13:46:08,620 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 13:46:08,623 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 13:46:08,624 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 13:46:08,626 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 13:46:08,627 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 13:46:08,631 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-24 13:46:08,631 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-24 13:46:08,632 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-24 13:46:08,633 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-24 13:46:08,633 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-24 13:46:08,635 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-24 13:46:08,635 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-24 13:46:08,636 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-24 13:46:08,637 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-24 13:46:08,638 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-24 13:46:08,640 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-24 13:46:08,640 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-24 13:46:08,642 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-24 13:46:08,642 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-24 13:46:08,642 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 13:46:08,644 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 13:46:08,645 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 13:46:08,652 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-24 13:46:08,682 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 13:46:08,682 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 13:46:08,684 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-24 13:46:08,684 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-24 13:46:08,685 INFO L138 SettingsManager]: * Use SBE=true [2020-10-24 13:46:08,685 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 13:46:08,685 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 13:46:08,686 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-24 13:46:08,686 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 13:46:08,686 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 13:46:08,687 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 13:46:08,687 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 13:46:08,687 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 13:46:08,688 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 13:46:08,688 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 13:46:08,688 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 13:46:08,688 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 13:46:08,689 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 13:46:08,689 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-24 13:46:08,689 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 13:46:08,690 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 13:46:08,690 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 13:46:08,690 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 13:46:08,691 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-24 13:46:08,691 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-24 13:46:08,691 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-24 13:46:08,691 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-24 13:46:08,692 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 13:46:08,692 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-24 13:46:08,692 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-2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d9c72214a613f4a26e1c80cbce806993eed5c352 [2020-10-24 13:46:09,179 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 13:46:09,216 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 13:46:09,220 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 13:46:09,221 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 13:46:09,222 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 13:46:09,223 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cdfpl/newton_1_5.i [2020-10-24 13:46:09,316 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9b1b8049f/881e235b203e403fa78676a866a678bc/FLAG12b2b8f81 [2020-10-24 13:46:10,000 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 13:46:10,001 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_1_5.i [2020-10-24 13:46:10,011 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9b1b8049f/881e235b203e403fa78676a866a678bc/FLAG12b2b8f81 [2020-10-24 13:46:10,338 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9b1b8049f/881e235b203e403fa78676a866a678bc [2020-10-24 13:46:10,342 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 13:46:10,349 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-24 13:46:10,352 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 13:46:10,352 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 13:46:10,357 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 13:46:10,359 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:46:10" (1/1) ... [2020-10-24 13:46:10,363 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c2efb3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:46:10, skipping insertion in model container [2020-10-24 13:46:10,363 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:46:10" (1/1) ... [2020-10-24 13:46:10,378 INFO L146 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 13:46:10,403 INFO L179 MainTranslator]: Built tables and reachable declarations [2020-10-24 13:46:10,640 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-10-24 13:46:10,651 INFO L212 MainTranslator]: Completed pre-run [2020-10-24 13:46:10,675 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-10-24 13:46:10,693 INFO L217 MainTranslator]: Completed translation [2020-10-24 13:46:10,693 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:46:10 WrapperNode [2020-10-24 13:46:10,694 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 13:46:10,695 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-24 13:46:10,695 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-24 13:46:10,696 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-24 13:46:10,705 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:46:10" (1/1) ... [2020-10-24 13:46:10,715 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:46:10" (1/1) ... [2020-10-24 13:46:10,736 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-24 13:46:10,738 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 13:46:10,738 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 13:46:10,738 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 13:46:10,747 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:46:10" (1/1) ... [2020-10-24 13:46:10,747 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:46:10" (1/1) ... [2020-10-24 13:46:10,749 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:46:10" (1/1) ... [2020-10-24 13:46:10,750 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:46:10" (1/1) ... [2020-10-24 13:46:10,756 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:46:10" (1/1) ... [2020-10-24 13:46:10,758 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:46:10" (1/1) ... [2020-10-24 13:46:10,760 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:46:10" (1/1) ... [2020-10-24 13:46:10,763 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 13:46:10,764 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 13:46:10,764 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 13:46:10,764 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 13:46:10,766 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:46:10" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 13:46:10,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-24 13:46:10,869 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 13:46:10,869 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 13:46:10,870 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 13:46:11,091 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 13:46:11,092 INFO L298 CfgBuilder]: Removed 12 assume(true) statements. [2020-10-24 13:46:11,094 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:46:11 BoogieIcfgContainer [2020-10-24 13:46:11,094 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 13:46:11,096 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 13:46:11,097 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 13:46:11,101 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 13:46:11,102 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 01:46:10" (1/3) ... [2020-10-24 13:46:11,103 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dbed897 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:46:11, skipping insertion in model container [2020-10-24 13:46:11,103 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:46:10" (2/3) ... [2020-10-24 13:46:11,104 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dbed897 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:46:11, skipping insertion in model container [2020-10-24 13:46:11,104 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:46:11" (3/3) ... [2020-10-24 13:46:11,106 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_1_5.i [2020-10-24 13:46:11,120 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-24 13:46:11,129 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 13:46:11,160 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 13:46:11,226 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 13:46:11,230 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 13:46:11,230 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-24 13:46:11,231 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 13:46:11,231 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 13:46:11,231 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 13:46:11,231 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 13:46:11,232 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 13:46:11,273 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2020-10-24 13:46:11,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-24 13:46:11,282 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 13:46:11,283 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 13:46:11,283 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 13:46:11,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 13:46:11,295 INFO L82 PathProgramCache]: Analyzing trace with hash -595084600, now seen corresponding path program 1 times [2020-10-24 13:46:11,308 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 13:46:11,310 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187492405] [2020-10-24 13:46:11,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 13:46:11,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 13:46:11,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 13:46:11,574 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187492405] [2020-10-24 13:46:11,575 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 13:46:11,576 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-24 13:46:11,577 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857924438] [2020-10-24 13:46:11,584 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-24 13:46:11,585 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-24 13:46:11,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-24 13:46:11,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-24 13:46:11,615 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 2 states. [2020-10-24 13:46:11,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 13:46:11,635 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2020-10-24 13:46:11,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-24 13:46:11,637 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2020-10-24 13:46:11,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 13:46:11,649 INFO L225 Difference]: With dead ends: 25 [2020-10-24 13:46:11,649 INFO L226 Difference]: Without dead ends: 10 [2020-10-24 13:46:11,655 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-24 13:46:11,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-10-24 13:46:11,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2020-10-24 13:46:11,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-10-24 13:46:11,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 9 transitions. [2020-10-24 13:46:11,711 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 9 transitions. Word has length 9 [2020-10-24 13:46:11,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 13:46:11,712 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 9 transitions. [2020-10-24 13:46:11,712 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-24 13:46:11,713 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 9 transitions. [2020-10-24 13:46:11,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-24 13:46:11,714 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 13:46:11,714 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 13:46:11,715 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-24 13:46:11,715 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 13:46:11,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 13:46:11,720 INFO L82 PathProgramCache]: Analyzing trace with hash 1179922762, now seen corresponding path program 1 times [2020-10-24 13:46:11,721 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 13:46:11,723 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830299691] [2020-10-24 13:46:11,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 13:46:11,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 13:46:11,784 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 13:46:11,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 13:46:11,820 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 13:46:11,854 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-24 13:46:11,855 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-24 13:46:11,859 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-24 13:46:11,896 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 01:46:11 BoogieIcfgContainer [2020-10-24 13:46:11,897 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 13:46:11,897 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-24 13:46:11,898 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-24 13:46:11,898 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-24 13:46:11,899 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:46:11" (3/4) ... [2020-10-24 13:46:11,903 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-24 13:46:11,904 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-24 13:46:11,909 INFO L168 Benchmark]: Toolchain (without parser) took 1561.53 ms. Allocated memory was 41.9 MB in the beginning and 50.3 MB in the end (delta: 8.4 MB). Free memory was 20.0 MB in the beginning and 31.3 MB in the end (delta: -11.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 13:46:11,911 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 41.9 MB. Free memory was 24.7 MB in the beginning and 24.7 MB in the end (delta: 35.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 13:46:11,913 INFO L168 Benchmark]: CACSL2BoogieTranslator took 342.54 ms. Allocated memory was 41.9 MB in the beginning and 50.3 MB in the end (delta: 8.4 MB). Free memory was 19.3 MB in the beginning and 26.9 MB in the end (delta: -7.6 MB). Peak memory consumption was 3.3 MB. Max. memory is 16.1 GB. [2020-10-24 13:46:11,915 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.86 ms. Allocated memory is still 50.3 MB. Free memory was 26.9 MB in the beginning and 25.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 13:46:11,916 INFO L168 Benchmark]: Boogie Preprocessor took 25.32 ms. Allocated memory is still 50.3 MB. Free memory was 25.5 MB in the beginning and 24.5 MB in the end (delta: 953.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 13:46:11,918 INFO L168 Benchmark]: RCFGBuilder took 330.69 ms. Allocated memory is still 50.3 MB. Free memory was 24.3 MB in the beginning and 27.2 MB in the end (delta: -2.8 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. [2020-10-24 13:46:11,919 INFO L168 Benchmark]: TraceAbstraction took 800.40 ms. Allocated memory is still 50.3 MB. Free memory was 26.7 MB in the beginning and 31.6 MB in the end (delta: -4.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 13:46:11,920 INFO L168 Benchmark]: Witness Printer took 6.84 ms. Allocated memory is still 50.3 MB. Free memory was 31.6 MB in the beginning and 31.3 MB in the end (delta: 251.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 13:46:11,937 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 41.9 MB. Free memory was 24.7 MB in the beginning and 24.7 MB in the end (delta: 35.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 342.54 ms. Allocated memory was 41.9 MB in the beginning and 50.3 MB in the end (delta: 8.4 MB). Free memory was 19.3 MB in the beginning and 26.9 MB in the end (delta: -7.6 MB). Peak memory consumption was 3.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 41.86 ms. Allocated memory is still 50.3 MB. Free memory was 26.9 MB in the beginning and 25.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 25.32 ms. Allocated memory is still 50.3 MB. Free memory was 25.5 MB in the beginning and 24.5 MB in the end (delta: 953.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 330.69 ms. Allocated memory is still 50.3 MB. Free memory was 24.3 MB in the beginning and 27.2 MB in the end (delta: -2.8 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 800.40 ms. Allocated memory is still 50.3 MB. Free memory was 26.7 MB in the beginning and 31.6 MB in the end (delta: -4.9 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 6.84 ms. Allocated memory is still 50.3 MB. Free memory was 31.6 MB in the beginning and 31.3 MB in the end (delta: 251.2 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 someBinaryArithmeticFLOAT_SMToperation at line 33, overapproximation of someBinaryDOUBLE_SMTComparisonOperation at line 41, overapproximation of someBinaryFLOAT_SMTComparisonOperation at line 31. 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: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 13 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 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-ee8e70e [2020-10-24 13:46:14,518 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 13:46:14,521 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 13:46:14,556 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-24 13:46:14,556 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-24 13:46:14,558 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-24 13:46:14,560 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-24 13:46:14,563 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-24 13:46:14,565 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-24 13:46:14,567 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-24 13:46:14,568 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-24 13:46:14,570 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-24 13:46:14,570 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 13:46:14,572 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 13:46:14,573 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 13:46:14,575 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 13:46:14,576 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 13:46:14,578 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 13:46:14,580 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 13:46:14,583 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 13:46:14,585 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 13:46:14,586 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 13:46:14,588 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 13:46:14,590 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 13:46:14,593 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-24 13:46:14,594 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-24 13:46:14,594 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-24 13:46:14,596 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-24 13:46:14,597 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-24 13:46:14,598 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-24 13:46:14,599 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-24 13:46:14,600 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-24 13:46:14,602 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-24 13:46:14,603 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-24 13:46:14,604 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-24 13:46:14,605 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-24 13:46:14,606 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-24 13:46:14,607 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-24 13:46:14,607 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 13:46:14,608 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 13:46:14,610 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 13:46:14,613 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-10-24 13:46:14,642 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 13:46:14,642 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 13:46:14,644 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-24 13:46:14,645 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-24 13:46:14,645 INFO L138 SettingsManager]: * Use SBE=true [2020-10-24 13:46:14,646 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 13:46:14,646 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 13:46:14,646 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 13:46:14,647 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 13:46:14,647 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 13:46:14,647 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 13:46:14,648 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 13:46:14,648 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-24 13:46:14,649 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-24 13:46:14,649 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 13:46:14,649 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 13:46:14,650 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 13:46:14,650 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 13:46:14,651 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 13:46:14,651 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-24 13:46:14,651 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 13:46:14,652 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 13:46:14,652 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 13:46:14,652 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 13:46:14,653 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-24 13:46:14,653 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-24 13:46:14,653 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-24 13:46:14,654 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-24 13:46:14,654 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 13:46:14,655 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-24 13:46:14,655 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-24 13:46:14,655 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-2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d9c72214a613f4a26e1c80cbce806993eed5c352 [2020-10-24 13:46:15,053 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 13:46:15,101 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 13:46:15,106 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 13:46:15,108 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 13:46:15,109 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 13:46:15,110 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cdfpl/newton_1_5.i [2020-10-24 13:46:15,204 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8be73ab08/fce45e25aeed4906a409815536db3fb1/FLAGad553be9c [2020-10-24 13:46:15,780 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 13:46:15,781 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_1_5.i [2020-10-24 13:46:15,790 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8be73ab08/fce45e25aeed4906a409815536db3fb1/FLAGad553be9c [2020-10-24 13:46:16,163 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8be73ab08/fce45e25aeed4906a409815536db3fb1 [2020-10-24 13:46:16,166 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 13:46:16,174 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-24 13:46:16,183 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 13:46:16,183 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 13:46:16,189 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 13:46:16,190 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:46:16" (1/1) ... [2020-10-24 13:46:16,195 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a50b8ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:46:16, skipping insertion in model container [2020-10-24 13:46:16,195 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:46:16" (1/1) ... [2020-10-24 13:46:16,204 INFO L146 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 13:46:16,227 INFO L179 MainTranslator]: Built tables and reachable declarations [2020-10-24 13:46:16,556 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-10-24 13:46:16,591 INFO L212 MainTranslator]: Completed pre-run [2020-10-24 13:46:16,659 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-10-24 13:46:16,681 INFO L217 MainTranslator]: Completed translation [2020-10-24 13:46:16,682 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:46:16 WrapperNode [2020-10-24 13:46:16,682 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 13:46:16,684 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-24 13:46:16,685 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-24 13:46:16,685 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-24 13:46:16,695 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:46:16" (1/1) ... [2020-10-24 13:46:16,709 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:46:16" (1/1) ... [2020-10-24 13:46:16,742 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-24 13:46:16,743 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 13:46:16,743 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 13:46:16,743 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 13:46:16,754 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:46:16" (1/1) ... [2020-10-24 13:46:16,755 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:46:16" (1/1) ... [2020-10-24 13:46:16,759 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:46:16" (1/1) ... [2020-10-24 13:46:16,767 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:46:16" (1/1) ... [2020-10-24 13:46:16,778 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:46:16" (1/1) ... [2020-10-24 13:46:16,781 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:46:16" (1/1) ... [2020-10-24 13:46:16,784 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:46:16" (1/1) ... [2020-10-24 13:46:16,789 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 13:46:16,790 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 13:46:16,791 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 13:46:16,791 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 13:46:16,792 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:46:16" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 13:46:16,878 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.float_to_bitvec_DOUBLE [2020-10-24 13:46:16,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-24 13:46:16,879 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 13:46:16,879 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 13:46:16,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 13:46:16,880 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.float_to_bitvec_FLOAT [2020-10-24 13:46:23,223 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 13:46:23,224 INFO L298 CfgBuilder]: Removed 12 assume(true) statements. [2020-10-24 13:46:23,225 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:46:23 BoogieIcfgContainer [2020-10-24 13:46:23,226 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 13:46:23,228 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 13:46:23,228 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 13:46:23,232 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 13:46:23,232 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 01:46:16" (1/3) ... [2020-10-24 13:46:23,233 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@641afd15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:46:23, skipping insertion in model container [2020-10-24 13:46:23,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:46:16" (2/3) ... [2020-10-24 13:46:23,237 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@641afd15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:46:23, skipping insertion in model container [2020-10-24 13:46:23,237 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:46:23" (3/3) ... [2020-10-24 13:46:23,240 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_1_5.i [2020-10-24 13:46:23,255 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-24 13:46:23,261 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 13:46:23,282 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 13:46:23,330 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 13:46:23,330 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 13:46:23,330 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-24 13:46:23,330 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 13:46:23,330 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 13:46:23,331 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 13:46:23,331 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 13:46:23,331 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 13:46:23,346 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2020-10-24 13:46:23,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-24 13:46:23,352 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 13:46:23,352 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 13:46:23,353 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 13:46:23,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 13:46:23,360 INFO L82 PathProgramCache]: Analyzing trace with hash 329560011, now seen corresponding path program 1 times [2020-10-24 13:46:23,377 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 13:46:23,378 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1807574336] [2020-10-24 13:46:23,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-10-24 13:46:25,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 13:46:26,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 1 conjunts are in the unsatisfiable core [2020-10-24 13:46:26,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 13:46:26,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 13:46:26,242 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 13:46:26,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 13:46:26,251 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1807574336] [2020-10-24 13:46:26,252 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 13:46:26,252 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-24 13:46:26,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298268116] [2020-10-24 13:46:26,258 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-24 13:46:26,259 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 13:46:26,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-24 13:46:26,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-24 13:46:26,278 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 2 states. [2020-10-24 13:46:26,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 13:46:26,297 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2020-10-24 13:46:26,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-24 13:46:26,299 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-10-24 13:46:26,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 13:46:26,309 INFO L225 Difference]: With dead ends: 27 [2020-10-24 13:46:26,309 INFO L226 Difference]: Without dead ends: 12 [2020-10-24 13:46:26,312 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-24 13:46:26,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-10-24 13:46:26,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-10-24 13:46:26,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-10-24 13:46:26,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2020-10-24 13:46:26,351 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 11 [2020-10-24 13:46:26,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 13:46:26,352 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2020-10-24 13:46:26,352 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-24 13:46:26,352 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2020-10-24 13:46:26,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-24 13:46:26,353 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 13:46:26,354 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 13:46:26,570 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-24 13:46:26,571 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 13:46:26,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 13:46:26,573 INFO L82 PathProgramCache]: Analyzing trace with hash 2104567373, now seen corresponding path program 1 times [2020-10-24 13:46:26,575 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 13:46:26,576 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2039727582] [2020-10-24 13:46:26,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-10-24 13:47:43,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 13:47:43,350 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 13:47:58,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 13:47:58,366 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 13:47:58,745 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-10-24 13:47:58,746 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-24 13:47:58,947 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-24 13:47:58,982 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 01:47:58 BoogieIcfgContainer [2020-10-24 13:47:58,983 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 13:47:58,984 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-24 13:47:58,984 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-24 13:47:58,984 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-24 13:47:58,985 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:46:23" (3/4) ... [2020-10-24 13:47:58,987 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-24 13:47:59,038 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-24 13:47:59,039 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-24 13:47:59,042 INFO L168 Benchmark]: Toolchain (without parser) took 102872.06 ms. Allocated memory was 48.2 MB in the beginning and 69.2 MB in the end (delta: 21.0 MB). Free memory was 24.9 MB in the beginning and 36.0 MB in the end (delta: -11.1 MB). Peak memory consumption was 11.2 MB. Max. memory is 16.1 GB. [2020-10-24 13:47:59,043 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 48.2 MB. Free memory was 29.6 MB in the beginning and 29.5 MB in the end (delta: 63.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 13:47:59,044 INFO L168 Benchmark]: CACSL2BoogieTranslator took 500.48 ms. Allocated memory is still 48.2 MB. Free memory was 24.3 MB in the beginning and 23.6 MB in the end (delta: 643.3 kB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. [2020-10-24 13:47:59,045 INFO L168 Benchmark]: Boogie Procedure Inliner took 57.77 ms. Allocated memory is still 48.2 MB. Free memory was 23.6 MB in the beginning and 21.4 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 13:47:59,046 INFO L168 Benchmark]: Boogie Preprocessor took 46.80 ms. Allocated memory was 48.2 MB in the beginning and 69.2 MB in the end (delta: 21.0 MB). Free memory was 21.3 MB in the beginning and 51.6 MB in the end (delta: -30.3 MB). Peak memory consumption was 5.8 MB. Max. memory is 16.1 GB. [2020-10-24 13:47:59,047 INFO L168 Benchmark]: RCFGBuilder took 6435.44 ms. Allocated memory is still 69.2 MB. Free memory was 51.6 MB in the beginning and 42.9 MB in the end (delta: 8.7 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2020-10-24 13:47:59,048 INFO L168 Benchmark]: TraceAbstraction took 95755.29 ms. Allocated memory is still 69.2 MB. Free memory was 42.6 MB in the beginning and 37.7 MB in the end (delta: 4.9 MB). Peak memory consumption was 5.2 MB. Max. memory is 16.1 GB. [2020-10-24 13:47:59,049 INFO L168 Benchmark]: Witness Printer took 55.61 ms. Allocated memory is still 69.2 MB. Free memory was 37.7 MB in the beginning and 36.0 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 13:47:59,054 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 48.2 MB. Free memory was 29.6 MB in the beginning and 29.5 MB in the end (delta: 63.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 500.48 ms. Allocated memory is still 48.2 MB. Free memory was 24.3 MB in the beginning and 23.6 MB in the end (delta: 643.3 kB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 57.77 ms. Allocated memory is still 48.2 MB. Free memory was 23.6 MB in the beginning and 21.4 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 46.80 ms. Allocated memory was 48.2 MB in the beginning and 69.2 MB in the end (delta: 21.0 MB). Free memory was 21.3 MB in the beginning and 51.6 MB in the end (delta: -30.3 MB). Peak memory consumption was 5.8 MB. Max. memory is 16.1 GB. * RCFGBuilder took 6435.44 ms. Allocated memory is still 69.2 MB. Free memory was 51.6 MB in the beginning and 42.9 MB in the end (delta: 8.7 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 95755.29 ms. Allocated memory is still 69.2 MB. Free memory was 42.6 MB in the beginning and 37.7 MB in the end (delta: 4.9 MB). Peak memory consumption was 5.2 MB. Max. memory is 16.1 GB. * Witness Printer took 55.61 ms. Allocated memory is still 69.2 MB. Free memory was 37.7 MB in the beginning and 36.0 MB in the end (delta: 1.7 MB). There was no memory consumed. 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(); [L31] EXPR 1.0f [L31] EXPR -1.0f [L31] IN > -1.0f && IN < 1.0f [L31] EXPR 1.0f [L31] IN > -1.0f && IN < 1.0f [L15] COND FALSE !(!cond) [L20] EXPR x*x [L20] EXPR x*x*x [L20] EXPR 6.0f [L20] EXPR (x*x*x)/6.0f [L20] EXPR x - (x*x*x)/6.0f [L20] EXPR x*x [L20] EXPR x*x*x [L20] EXPR x*x*x*x [L20] EXPR x*x*x*x*x [L20] EXPR 120.0f [L20] EXPR (x*x*x*x*x)/120.0f [L20] EXPR x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f [L20] EXPR x*x [L20] EXPR x*x*x [L20] EXPR x*x*x*x [L20] EXPR x*x*x*x*x [L20] EXPR x*x*x*x*x*x [L20] EXPR x*x*x*x*x*x*x [L20] EXPR 5040.0f [L20] EXPR (x*x*x*x*x*x*x)/5040.0f [L20] EXPR x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f [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] EXPR x*x [L25] EXPR 2.0f [L25] EXPR (x*x)/2.0f [L25] EXPR 1 - (x*x)/2.0f [L25] EXPR x*x [L25] EXPR x*x*x [L25] EXPR x*x*x*x [L25] EXPR 24.0f [L25] EXPR (x*x*x*x)/24.0f [L25] EXPR 1 - (x*x)/2.0f + (x*x*x*x)/24.0f [L25] EXPR x*x [L25] EXPR x*x*x [L25] EXPR x*x*x*x [L25] EXPR x*x*x*x*x [L25] EXPR x*x*x*x*x*x [L25] EXPR 720.0f [L25] EXPR (x*x*x*x*x*x)/720.0f [L25] EXPR 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f [L25] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L33] EXPR f(IN)/fp(IN) [L33] EXPR IN - f(IN)/fp(IN) [L33] float x = IN - f(IN)/fp(IN); [L41] EXPR 0.1 [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, 16 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 95.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 16 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 20 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred 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, 79.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 200 SizeOfPredicates, 0 NumberOfNonLiveVariables, 78 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...