./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cdfpl/newton_3_8.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_8ea4aee5-fc1a-455c-9db0-386a5665ac78/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_8ea4aee5-fc1a-455c-9db0-386a5665ac78/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_8ea4aee5-fc1a-455c-9db0-386a5665ac78/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_8ea4aee5-fc1a-455c-9db0-386a5665ac78/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/newton_3_8.i -s /tmp/vcloud-vcloud-master/worker/run_dir_8ea4aee5-fc1a-455c-9db0-386a5665ac78/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_8ea4aee5-fc1a-455c-9db0-386a5665ac78/bin/uautomizer --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 3e7a5c2d38e9221fb261a8b3d947e8e6a8fda84a .................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_8ea4aee5-fc1a-455c-9db0-386a5665ac78/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_8ea4aee5-fc1a-455c-9db0-386a5665ac78/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_8ea4aee5-fc1a-455c-9db0-386a5665ac78/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_8ea4aee5-fc1a-455c-9db0-386a5665ac78/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/newton_3_8.i -s /tmp/vcloud-vcloud-master/worker/run_dir_8ea4aee5-fc1a-455c-9db0-386a5665ac78/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_8ea4aee5-fc1a-455c-9db0-386a5665ac78/bin/uautomizer --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 3e7a5c2d38e9221fb261a8b3d947e8e6a8fda84a .............................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 23:19:33,146 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 23:19:33,148 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 23:19:33,217 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 23:19:33,227 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 23:19:33,228 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 23:19:33,230 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 23:19:33,232 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 23:19:33,234 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 23:19:33,236 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 23:19:33,237 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 23:19:33,239 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 23:19:33,239 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 23:19:33,240 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 23:19:33,242 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 23:19:33,243 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 23:19:33,244 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 23:19:33,245 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 23:19:33,247 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 23:19:33,249 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 23:19:33,251 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 23:19:33,253 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 23:19:33,254 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 23:19:33,255 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 23:19:33,259 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 23:19:33,259 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 23:19:33,259 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 23:19:33,260 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 23:19:33,261 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 23:19:33,262 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 23:19:33,263 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 23:19:33,264 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 23:19:33,265 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 23:19:33,266 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 23:19:33,267 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 23:19:33,267 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 23:19:33,268 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 23:19:33,269 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 23:19:33,269 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 23:19:33,270 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 23:19:33,271 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 23:19:33,272 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_8ea4aee5-fc1a-455c-9db0-386a5665ac78/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 23:19:33,306 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 23:19:33,307 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 23:19:33,308 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 23:19:33,308 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 23:19:33,308 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 23:19:33,309 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 23:19:33,309 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 23:19:33,309 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 23:19:33,309 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 23:19:33,310 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 23:19:33,310 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 23:19:33,310 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 23:19:33,310 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 23:19:33,311 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 23:19:33,311 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 23:19:33,311 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 23:19:33,311 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 23:19:33,311 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 23:19:33,312 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 23:19:33,312 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 23:19:33,312 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 23:19:33,315 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 23:19:33,315 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 23:19:33,315 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 23:19:33,316 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 23:19:33,316 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 23:19:33,316 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 23:19:33,316 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 23:19:33,317 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 23:19:33,317 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:/tmp/vcloud-vcloud-master/worker/run_dir_8ea4aee5-fc1a-455c-9db0-386a5665ac78/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_8ea4aee5-fc1a-455c-9db0-386a5665ac78/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3e7a5c2d38e9221fb261a8b3d947e8e6a8fda84a [2020-11-29 23:19:33,551 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 23:19:33,583 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 23:19:33,585 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 23:19:33,586 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 23:19:33,590 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 23:19:33,591 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_8ea4aee5-fc1a-455c-9db0-386a5665ac78/bin/uautomizer/../../sv-benchmarks/c/floats-cdfpl/newton_3_8.i [2020-11-29 23:19:33,691 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8ea4aee5-fc1a-455c-9db0-386a5665ac78/bin/uautomizer/data/7e52fd69e/c58e9cab8f574f9c93c00fc6f0cd945d/FLAG23576d757 [2020-11-29 23:19:34,134 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 23:19:34,135 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_8ea4aee5-fc1a-455c-9db0-386a5665ac78/sv-benchmarks/c/floats-cdfpl/newton_3_8.i [2020-11-29 23:19:34,142 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8ea4aee5-fc1a-455c-9db0-386a5665ac78/bin/uautomizer/data/7e52fd69e/c58e9cab8f574f9c93c00fc6f0cd945d/FLAG23576d757 [2020-11-29 23:19:34,512 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_8ea4aee5-fc1a-455c-9db0-386a5665ac78/bin/uautomizer/data/7e52fd69e/c58e9cab8f574f9c93c00fc6f0cd945d [2020-11-29 23:19:34,514 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 23:19:34,516 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 23:19:34,517 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 23:19:34,517 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 23:19:34,524 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 23:19:34,524 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:19:34" (1/1) ... [2020-11-29 23:19:34,527 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bf8f753 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:19:34, skipping insertion in model container [2020-11-29 23:19:34,527 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:19:34" (1/1) ... [2020-11-29 23:19:34,534 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 23:19:34,551 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 23:19:34,732 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:19:34,740 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 23:19:34,769 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:19:34,791 INFO L208 MainTranslator]: Completed translation [2020-11-29 23:19:34,791 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:19:34 WrapperNode [2020-11-29 23:19:34,792 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 23:19:34,793 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 23:19:34,793 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 23:19:34,793 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 23:19:34,801 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:19:34" (1/1) ... [2020-11-29 23:19:34,808 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:19:34" (1/1) ... [2020-11-29 23:19:34,832 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 23:19:34,833 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 23:19:34,833 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 23:19:34,833 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 23:19:34,840 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:19:34" (1/1) ... [2020-11-29 23:19:34,840 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:19:34" (1/1) ... [2020-11-29 23:19:34,842 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:19:34" (1/1) ... [2020-11-29 23:19:34,843 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:19:34" (1/1) ... [2020-11-29 23:19:34,849 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:19:34" (1/1) ... [2020-11-29 23:19:34,851 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:19:34" (1/1) ... [2020-11-29 23:19:34,853 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:19:34" (1/1) ... [2020-11-29 23:19:34,855 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 23:19:34,856 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 23:19:34,856 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 23:19:34,856 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 23:19:34,857 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:19:34" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8ea4aee5-fc1a-455c-9db0-386a5665ac78/bin/uautomizer/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 [2020-11-29 23:19:34,914 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 23:19:34,914 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 23:19:34,914 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 23:19:34,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 23:19:35,119 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 23:19:35,120 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-11-29 23:19:35,124 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:19:35 BoogieIcfgContainer [2020-11-29 23:19:35,124 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 23:19:35,127 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 23:19:35,127 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 23:19:35,131 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 23:19:35,131 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 11:19:34" (1/3) ... [2020-11-29 23:19:35,132 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20fe008 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 11:19:35, skipping insertion in model container [2020-11-29 23:19:35,132 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:19:34" (2/3) ... [2020-11-29 23:19:35,132 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20fe008 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 11:19:35, skipping insertion in model container [2020-11-29 23:19:35,132 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:19:35" (3/3) ... [2020-11-29 23:19:35,134 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_3_8.i [2020-11-29 23:19:35,158 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 23:19:35,164 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 23:19:35,178 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-29 23:19:35,215 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 23:19:35,216 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 23:19:35,216 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 23:19:35,216 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 23:19:35,216 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 23:19:35,216 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 23:19:35,216 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 23:19:35,217 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 23:19:35,229 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2020-11-29 23:19:35,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-29 23:19:35,234 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:19:35,235 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:19:35,235 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:19:35,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:19:35,241 INFO L82 PathProgramCache]: Analyzing trace with hash 1296243724, now seen corresponding path program 1 times [2020-11-29 23:19:35,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:19:35,250 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636896481] [2020-11-29 23:19:35,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:19:35,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:19:35,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:19:35,430 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636896481] [2020-11-29 23:19:35,431 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:19:35,431 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 23:19:35,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506437097] [2020-11-29 23:19:35,437 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 23:19:35,437 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:19:35,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 23:19:35,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 23:19:35,460 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 2 states. [2020-11-29 23:19:35,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:19:35,478 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2020-11-29 23:19:35,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 23:19:35,480 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-11-29 23:19:35,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:19:35,490 INFO L225 Difference]: With dead ends: 33 [2020-11-29 23:19:35,490 INFO L226 Difference]: Without dead ends: 14 [2020-11-29 23:19:35,494 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 [2020-11-29 23:19:35,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-11-29 23:19:35,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-11-29 23:19:35,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-11-29 23:19:35,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 13 transitions. [2020-11-29 23:19:35,536 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 13 transitions. Word has length 13 [2020-11-29 23:19:35,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:19:35,537 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 13 transitions. [2020-11-29 23:19:35,537 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 23:19:35,538 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 13 transitions. [2020-11-29 23:19:35,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-29 23:19:35,539 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:19:35,539 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:19:35,541 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 23:19:35,541 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:19:35,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:19:35,545 INFO L82 PathProgramCache]: Analyzing trace with hash 1997308302, now seen corresponding path program 1 times [2020-11-29 23:19:35,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:19:35,546 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634617626] [2020-11-29 23:19:35,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:19:35,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:19:35,589 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:19:35,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:19:35,627 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:19:35,666 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:19:35,666 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 23:19:35,667 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 23:19:35,705 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 11:19:35 BoogieIcfgContainer [2020-11-29 23:19:35,705 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 23:19:35,706 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 23:19:35,706 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 23:19:35,707 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 23:19:35,707 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:19:35" (3/4) ... [2020-11-29 23:19:35,711 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-29 23:19:35,711 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 23:19:35,714 INFO L168 Benchmark]: Toolchain (without parser) took 1196.46 ms. Allocated memory is still 115.3 MB. Free memory was 82.3 MB in the beginning and 55.5 MB in the end (delta: 26.8 MB). Peak memory consumption was 24.4 MB. Max. memory is 16.1 GB. [2020-11-29 23:19:35,715 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 73.4 MB. Free memory was 31.5 MB in the beginning and 31.4 MB in the end (delta: 56.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:19:35,717 INFO L168 Benchmark]: CACSL2BoogieTranslator took 274.84 ms. Allocated memory is still 115.3 MB. Free memory was 82.1 MB in the beginning and 91.1 MB in the end (delta: -9.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 23:19:35,719 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.37 ms. Allocated memory is still 115.3 MB. Free memory was 91.1 MB in the beginning and 89.6 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:19:35,721 INFO L168 Benchmark]: Boogie Preprocessor took 22.39 ms. Allocated memory is still 115.3 MB. Free memory was 89.6 MB in the beginning and 88.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 23:19:35,721 INFO L168 Benchmark]: RCFGBuilder took 268.00 ms. Allocated memory is still 115.3 MB. Free memory was 88.1 MB in the beginning and 76.4 MB in the end (delta: 11.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-29 23:19:35,723 INFO L168 Benchmark]: TraceAbstraction took 578.23 ms. Allocated memory is still 115.3 MB. Free memory was 76.2 MB in the beginning and 55.5 MB in the end (delta: 20.7 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2020-11-29 23:19:35,724 INFO L168 Benchmark]: Witness Printer took 5.19 ms. Allocated memory is still 115.3 MB. Free memory is still 55.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:19:35,734 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 73.4 MB. Free memory was 31.5 MB in the beginning and 31.4 MB in the end (delta: 56.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 274.84 ms. Allocated memory is still 115.3 MB. Free memory was 82.1 MB in the beginning and 91.1 MB in the end (delta: -9.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 39.37 ms. Allocated memory is still 115.3 MB. Free memory was 91.1 MB in the beginning and 89.6 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 22.39 ms. Allocated memory is still 115.3 MB. Free memory was 89.6 MB in the beginning and 88.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 268.00 ms. Allocated memory is still 115.3 MB. Free memory was 88.1 MB in the beginning and 76.4 MB in the end (delta: 11.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 578.23 ms. Allocated memory is still 115.3 MB. Free memory was 76.2 MB in the beginning and 55.5 MB in the end (delta: 20.7 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * Witness Printer took 5.19 ms. Allocated memory is still 115.3 MB. Free memory is still 55.5 MB. 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 37. 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); [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; [L35] x = x - f(x)/fp(x) [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; [L37] x = x - f(x)/fp(x) [L41] COND TRUE !(x < 0.1) [L12] COND FALSE !(0) [L12] __assert_fail ("0", "newton_3_8.c", 3, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 17 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=18occurred 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, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 144 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-a4ecdab [2020-11-29 23:19:38,196 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 23:19:38,199 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 23:19:38,236 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 23:19:38,237 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 23:19:38,238 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 23:19:38,240 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 23:19:38,242 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 23:19:38,244 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 23:19:38,245 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 23:19:38,247 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 23:19:38,248 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 23:19:38,249 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 23:19:38,250 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 23:19:38,258 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 23:19:38,260 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 23:19:38,262 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 23:19:38,268 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 23:19:38,271 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 23:19:38,279 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 23:19:38,281 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 23:19:38,282 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 23:19:38,286 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 23:19:38,287 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 23:19:38,291 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 23:19:38,295 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 23:19:38,295 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 23:19:38,297 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 23:19:38,298 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 23:19:38,299 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 23:19:38,300 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 23:19:38,301 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 23:19:38,303 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 23:19:38,304 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 23:19:38,305 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 23:19:38,305 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 23:19:38,306 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 23:19:38,306 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 23:19:38,307 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 23:19:38,308 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 23:19:38,309 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 23:19:38,310 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_8ea4aee5-fc1a-455c-9db0-386a5665ac78/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-11-29 23:19:38,355 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 23:19:38,356 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 23:19:38,357 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 23:19:38,357 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 23:19:38,357 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 23:19:38,357 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 23:19:38,358 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 23:19:38,358 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 23:19:38,358 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 23:19:38,358 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 23:19:38,358 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 23:19:38,358 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 23:19:38,358 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-29 23:19:38,359 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-29 23:19:38,359 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 23:19:38,359 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 23:19:38,359 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 23:19:38,359 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 23:19:38,360 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 23:19:38,360 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 23:19:38,360 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 23:19:38,360 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 23:19:38,360 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 23:19:38,360 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 23:19:38,360 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 23:19:38,361 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 23:19:38,361 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-29 23:19:38,361 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-29 23:19:38,361 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 23:19:38,361 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 23:19:38,361 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-29 23:19:38,362 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:/tmp/vcloud-vcloud-master/worker/run_dir_8ea4aee5-fc1a-455c-9db0-386a5665ac78/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_8ea4aee5-fc1a-455c-9db0-386a5665ac78/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3e7a5c2d38e9221fb261a8b3d947e8e6a8fda84a [2020-11-29 23:19:38,795 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 23:19:38,829 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 23:19:38,832 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 23:19:38,834 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 23:19:38,834 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 23:19:38,836 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_8ea4aee5-fc1a-455c-9db0-386a5665ac78/bin/uautomizer/../../sv-benchmarks/c/floats-cdfpl/newton_3_8.i [2020-11-29 23:19:38,913 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8ea4aee5-fc1a-455c-9db0-386a5665ac78/bin/uautomizer/data/174478e38/d9ddb42b83464729b83f0de9fad9b740/FLAGe94da377f [2020-11-29 23:19:39,509 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 23:19:39,509 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_8ea4aee5-fc1a-455c-9db0-386a5665ac78/sv-benchmarks/c/floats-cdfpl/newton_3_8.i [2020-11-29 23:19:39,517 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8ea4aee5-fc1a-455c-9db0-386a5665ac78/bin/uautomizer/data/174478e38/d9ddb42b83464729b83f0de9fad9b740/FLAGe94da377f [2020-11-29 23:19:39,871 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_8ea4aee5-fc1a-455c-9db0-386a5665ac78/bin/uautomizer/data/174478e38/d9ddb42b83464729b83f0de9fad9b740 [2020-11-29 23:19:39,874 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 23:19:39,875 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 23:19:39,877 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 23:19:39,877 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 23:19:39,880 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 23:19:39,881 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:19:39" (1/1) ... [2020-11-29 23:19:39,883 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b67a662 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:19:39, skipping insertion in model container [2020-11-29 23:19:39,883 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:19:39" (1/1) ... [2020-11-29 23:19:39,891 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 23:19:39,907 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 23:19:40,067 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:19:40,079 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 23:19:40,101 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:19:40,147 INFO L208 MainTranslator]: Completed translation [2020-11-29 23:19:40,148 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:19:40 WrapperNode [2020-11-29 23:19:40,148 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 23:19:40,151 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 23:19:40,151 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 23:19:40,153 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 23:19:40,167 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:19:40" (1/1) ... [2020-11-29 23:19:40,181 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:19:40" (1/1) ... [2020-11-29 23:19:40,205 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 23:19:40,206 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 23:19:40,206 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 23:19:40,206 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 23:19:40,214 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:19:40" (1/1) ... [2020-11-29 23:19:40,215 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:19:40" (1/1) ... [2020-11-29 23:19:40,218 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:19:40" (1/1) ... [2020-11-29 23:19:40,219 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:19:40" (1/1) ... [2020-11-29 23:19:40,228 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:19:40" (1/1) ... [2020-11-29 23:19:40,230 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:19:40" (1/1) ... [2020-11-29 23:19:40,233 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:19:40" (1/1) ... [2020-11-29 23:19:40,237 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 23:19:40,237 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 23:19:40,238 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 23:19:40,238 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 23:19:40,239 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:19:40" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8ea4aee5-fc1a-455c-9db0-386a5665ac78/bin/uautomizer/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 [2020-11-29 23:19:40,300 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-29 23:19:40,300 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 23:19:40,300 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 23:19:40,300 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 23:19:58,086 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 23:19:58,088 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-11-29 23:19:58,089 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:19:58 BoogieIcfgContainer [2020-11-29 23:19:58,089 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 23:19:58,093 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 23:19:58,093 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 23:19:58,096 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 23:19:58,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 11:19:39" (1/3) ... [2020-11-29 23:19:58,097 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@174d564f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 11:19:58, skipping insertion in model container [2020-11-29 23:19:58,097 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:19:40" (2/3) ... [2020-11-29 23:19:58,097 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@174d564f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 11:19:58, skipping insertion in model container [2020-11-29 23:19:58,098 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:19:58" (3/3) ... [2020-11-29 23:19:58,099 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_3_8.i [2020-11-29 23:19:58,112 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 23:19:58,116 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 23:19:58,127 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-29 23:19:58,146 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 23:19:58,147 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 23:19:58,147 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 23:19:58,147 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 23:19:58,147 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 23:19:58,147 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 23:19:58,148 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 23:19:58,148 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 23:19:58,158 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2020-11-29 23:19:58,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-29 23:19:58,162 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:19:58,162 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:19:58,162 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:19:58,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:19:58,167 INFO L82 PathProgramCache]: Analyzing trace with hash 1296243724, now seen corresponding path program 1 times [2020-11-29 23:19:58,178 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 23:19:58,178 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [841723617] [2020-11-29 23:19:58,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8ea4aee5-fc1a-455c-9db0-386a5665ac78/bin/uautomizer/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 [2020-11-29 23:20:01,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:20:01,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-29 23:20:01,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:20:01,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:20:01,874 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 23:20:01,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:20:01,880 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [841723617] [2020-11-29 23:20:01,881 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:20:01,882 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-29 23:20:01,883 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707330996] [2020-11-29 23:20:01,887 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 23:20:01,887 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 23:20:01,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 23:20:01,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 23:20:01,907 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 2 states. [2020-11-29 23:20:01,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:20:01,922 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2020-11-29 23:20:01,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 23:20:01,924 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-11-29 23:20:01,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:20:01,931 INFO L225 Difference]: With dead ends: 33 [2020-11-29 23:20:01,931 INFO L226 Difference]: Without dead ends: 14 [2020-11-29 23:20:01,934 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 23:20:01,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-11-29 23:20:01,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-11-29 23:20:01,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-11-29 23:20:01,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 13 transitions. [2020-11-29 23:20:01,967 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 13 transitions. Word has length 13 [2020-11-29 23:20:01,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:20:01,967 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 13 transitions. [2020-11-29 23:20:01,967 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 23:20:01,968 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 13 transitions. [2020-11-29 23:20:01,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-29 23:20:01,968 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:20:01,968 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:20:02,192 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-29 23:20:02,193 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:20:02,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:20:02,194 INFO L82 PathProgramCache]: Analyzing trace with hash 1997308302, now seen corresponding path program 1 times [2020-11-29 23:20:02,194 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 23:20:02,195 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [42564963] [2020-11-29 23:20:02,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8ea4aee5-fc1a-455c-9db0-386a5665ac78/bin/uautomizer/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 [2020-11-29 23:20:19,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:20:19,159 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:20:36,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:20:36,179 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:20:36,481 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-11-29 23:20:36,481 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 23:20:36,682 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-29 23:20:36,722 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 11:20:36 BoogieIcfgContainer [2020-11-29 23:20:36,722 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 23:20:36,723 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 23:20:36,723 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 23:20:36,723 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 23:20:36,724 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:19:58" (3/4) ... [2020-11-29 23:20:36,726 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-29 23:20:36,770 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_8ea4aee5-fc1a-455c-9db0-386a5665ac78/bin/uautomizer/witness.graphml [2020-11-29 23:20:36,771 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 23:20:36,773 INFO L168 Benchmark]: Toolchain (without parser) took 56896.47 ms. Allocated memory is still 67.1 MB. Free memory was 45.7 MB in the beginning and 43.5 MB in the end (delta: 2.2 MB). Peak memory consumption was 1.4 MB. Max. memory is 16.1 GB. [2020-11-29 23:20:36,773 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 50.3 MB. Free memory is still 31.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:20:36,775 INFO L168 Benchmark]: CACSL2BoogieTranslator took 272.32 ms. Allocated memory is still 67.1 MB. Free memory was 45.4 MB in the beginning and 50.7 MB in the end (delta: -5.3 MB). Peak memory consumption was 13.9 MB. Max. memory is 16.1 GB. [2020-11-29 23:20:36,776 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.65 ms. Allocated memory is still 67.1 MB. Free memory was 50.7 MB in the beginning and 48.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 23:20:36,777 INFO L168 Benchmark]: Boogie Preprocessor took 30.62 ms. Allocated memory is still 67.1 MB. Free memory was 48.9 MB in the beginning and 47.5 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:20:36,777 INFO L168 Benchmark]: RCFGBuilder took 17852.17 ms. Allocated memory is still 67.1 MB. Free memory was 47.5 MB in the beginning and 34.0 MB in the end (delta: 13.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-29 23:20:36,779 INFO L168 Benchmark]: TraceAbstraction took 38629.50 ms. Allocated memory is still 67.1 MB. Free memory was 33.6 MB in the beginning and 45.9 MB in the end (delta: -12.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-29 23:20:36,780 INFO L168 Benchmark]: Witness Printer took 47.80 ms. Allocated memory is still 67.1 MB. Free memory was 45.5 MB in the beginning and 43.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 23:20:36,783 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 50.3 MB. Free memory is still 31.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 272.32 ms. Allocated memory is still 67.1 MB. Free memory was 45.4 MB in the beginning and 50.7 MB in the end (delta: -5.3 MB). Peak memory consumption was 13.9 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 54.65 ms. Allocated memory is still 67.1 MB. Free memory was 50.7 MB in the beginning and 48.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 30.62 ms. Allocated memory is still 67.1 MB. Free memory was 48.9 MB in the beginning and 47.5 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 17852.17 ms. Allocated memory is still 67.1 MB. Free memory was 47.5 MB in the beginning and 34.0 MB in the end (delta: 13.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 38629.50 ms. Allocated memory is still 67.1 MB. Free memory was 33.6 MB in the beginning and 45.9 MB in the end (delta: -12.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Witness Printer took 47.80 ms. Allocated memory is still 67.1 MB. Free memory was 45.5 MB in the beginning and 43.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 12]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L30] float IN = __VERIFIER_nondet_float(); [L15] COND FALSE !(!cond) [L20] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L25] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L33] float x = IN - f(IN)/fp(IN); [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; [L35] x = x - f(x)/fp(x) [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; [L37] x = x - f(x)/fp(x) [L41] COND TRUE !(x < 0.1) [L12] COND FALSE !(0) [L12] __assert_fail ("0", "newton_3_8.c", 3, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 38.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 17 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred 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, 20.3s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 288 SizeOfPredicates, 0 NumberOfNonLiveVariables, 49 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...