./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cdfpl/newton_2_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_7c48d595-c921-44d5-9d92-efd3e621b3b6/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_7c48d595-c921-44d5-9d92-efd3e621b3b6/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_7c48d595-c921-44d5-9d92-efd3e621b3b6/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_7c48d595-c921-44d5-9d92-efd3e621b3b6/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/newton_2_8.i -s /tmp/vcloud-vcloud-master/worker/run_dir_7c48d595-c921-44d5-9d92-efd3e621b3b6/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_7c48d595-c921-44d5-9d92-efd3e621b3b6/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 80de2bcb413ca82cf36ee5cabb22cc23421a986b ............................................................................................................................................................................................................................................................................... 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_7c48d595-c921-44d5-9d92-efd3e621b3b6/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_7c48d595-c921-44d5-9d92-efd3e621b3b6/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_7c48d595-c921-44d5-9d92-efd3e621b3b6/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_7c48d595-c921-44d5-9d92-efd3e621b3b6/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/newton_2_8.i -s /tmp/vcloud-vcloud-master/worker/run_dir_7c48d595-c921-44d5-9d92-efd3e621b3b6/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_7c48d595-c921-44d5-9d92-efd3e621b3b6/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 80de2bcb413ca82cf36ee5cabb22cc23421a986b ........................................................................................................................................................................................................................................................................................... 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 18:23:20,106 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 18:23:20,108 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 18:23:20,181 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 18:23:20,182 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 18:23:20,184 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 18:23:20,197 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 18:23:20,200 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 18:23:20,203 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 18:23:20,204 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 18:23:20,205 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 18:23:20,207 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 18:23:20,207 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 18:23:20,209 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 18:23:20,211 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 18:23:20,213 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 18:23:20,214 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 18:23:20,215 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 18:23:20,218 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 18:23:20,220 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 18:23:20,223 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 18:23:20,224 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 18:23:20,226 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 18:23:20,227 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 18:23:20,231 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 18:23:20,231 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 18:23:20,232 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 18:23:20,233 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 18:23:20,234 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 18:23:20,235 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 18:23:20,235 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 18:23:20,236 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 18:23:20,237 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 18:23:20,238 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 18:23:20,240 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 18:23:20,240 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 18:23:20,241 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 18:23:20,241 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 18:23:20,242 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 18:23:20,243 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 18:23:20,243 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 18:23:20,244 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_7c48d595-c921-44d5-9d92-efd3e621b3b6/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 18:23:20,269 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 18:23:20,269 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 18:23:20,270 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 18:23:20,271 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 18:23:20,271 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 18:23:20,271 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 18:23:20,271 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 18:23:20,272 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 18:23:20,272 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 18:23:20,272 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 18:23:20,272 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 18:23:20,272 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 18:23:20,273 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 18:23:20,273 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 18:23:20,273 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 18:23:20,273 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 18:23:20,273 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 18:23:20,274 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 18:23:20,274 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 18:23:20,274 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 18:23:20,274 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 18:23:20,274 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 18:23:20,275 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 18:23:20,275 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 18:23:20,275 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 18:23:20,275 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 18:23:20,276 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 18:23:20,276 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 18:23:20,276 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 18:23:20,276 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_7c48d595-c921-44d5-9d92-efd3e621b3b6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_7c48d595-c921-44d5-9d92-efd3e621b3b6/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 80de2bcb413ca82cf36ee5cabb22cc23421a986b [2020-11-29 18:23:20,572 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 18:23:20,598 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 18:23:20,601 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 18:23:20,602 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 18:23:20,603 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 18:23:20,604 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_7c48d595-c921-44d5-9d92-efd3e621b3b6/bin/uautomizer/../../sv-benchmarks/c/floats-cdfpl/newton_2_8.i [2020-11-29 18:23:20,689 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7c48d595-c921-44d5-9d92-efd3e621b3b6/bin/uautomizer/data/02d4460ca/9b27c38d49554e5faea3e0eb141194e4/FLAG9376430b4 [2020-11-29 18:23:21,263 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 18:23:21,264 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_7c48d595-c921-44d5-9d92-efd3e621b3b6/sv-benchmarks/c/floats-cdfpl/newton_2_8.i [2020-11-29 18:23:21,271 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7c48d595-c921-44d5-9d92-efd3e621b3b6/bin/uautomizer/data/02d4460ca/9b27c38d49554e5faea3e0eb141194e4/FLAG9376430b4 [2020-11-29 18:23:21,608 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_7c48d595-c921-44d5-9d92-efd3e621b3b6/bin/uautomizer/data/02d4460ca/9b27c38d49554e5faea3e0eb141194e4 [2020-11-29 18:23:21,611 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 18:23:21,614 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 18:23:21,616 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 18:23:21,616 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 18:23:21,620 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 18:23:21,621 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:23:21" (1/1) ... [2020-11-29 18:23:21,623 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@405b98df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:23:21, skipping insertion in model container [2020-11-29 18:23:21,623 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:23:21" (1/1) ... [2020-11-29 18:23:21,633 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 18:23:21,649 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 18:23:21,897 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 18:23:21,907 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 18:23:21,928 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 18:23:21,944 INFO L208 MainTranslator]: Completed translation [2020-11-29 18:23:21,945 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:23:21 WrapperNode [2020-11-29 18:23:21,945 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 18:23:21,946 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 18:23:21,946 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 18:23:21,946 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 18:23:21,955 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:23:21" (1/1) ... [2020-11-29 18:23:21,963 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:23:21" (1/1) ... [2020-11-29 18:23:21,983 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 18:23:21,983 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 18:23:21,984 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 18:23:21,984 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 18:23:21,991 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:23:21" (1/1) ... [2020-11-29 18:23:21,991 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:23:21" (1/1) ... [2020-11-29 18:23:21,993 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:23:21" (1/1) ... [2020-11-29 18:23:21,993 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:23:21" (1/1) ... [2020-11-29 18:23:22,000 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:23:21" (1/1) ... [2020-11-29 18:23:22,002 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:23:21" (1/1) ... [2020-11-29 18:23:22,004 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:23:21" (1/1) ... [2020-11-29 18:23:22,006 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 18:23:22,007 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 18:23:22,007 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 18:23:22,007 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 18:23:22,008 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:23:21" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c48d595-c921-44d5-9d92-efd3e621b3b6/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 18:23:22,085 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 18:23:22,085 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 18:23:22,085 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 18:23:22,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 18:23:22,530 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 18:23:22,530 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-11-29 18:23:22,533 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:23:22 BoogieIcfgContainer [2020-11-29 18:23:22,533 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 18:23:22,538 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 18:23:22,539 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 18:23:22,543 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 18:23:22,544 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 06:23:21" (1/3) ... [2020-11-29 18:23:22,544 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a5b12e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:23:22, skipping insertion in model container [2020-11-29 18:23:22,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:23:21" (2/3) ... [2020-11-29 18:23:22,545 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a5b12e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:23:22, skipping insertion in model container [2020-11-29 18:23:22,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:23:22" (3/3) ... [2020-11-29 18:23:22,547 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_2_8.i [2020-11-29 18:23:22,564 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 18:23:22,569 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 18:23:22,583 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-29 18:23:22,625 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 18:23:22,625 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 18:23:22,625 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 18:23:22,625 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 18:23:22,625 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 18:23:22,626 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 18:23:22,626 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 18:23:22,626 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 18:23:22,641 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2020-11-29 18:23:22,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-29 18:23:22,647 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:23:22,648 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:23:22,648 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:23:22,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:23:22,655 INFO L82 PathProgramCache]: Analyzing trace with hash -646694038, now seen corresponding path program 1 times [2020-11-29 18:23:22,666 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:23:22,667 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999169128] [2020-11-29 18:23:22,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:23:22,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:23:22,852 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 18:23:22,853 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999169128] [2020-11-29 18:23:22,855 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:23:22,855 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 18:23:22,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071335812] [2020-11-29 18:23:22,861 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 18:23:22,862 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:23:22,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 18:23:22,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 18:23:22,884 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 2 states. [2020-11-29 18:23:22,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:23:22,906 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2020-11-29 18:23:22,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 18:23:22,908 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-11-29 18:23:22,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:23:22,920 INFO L225 Difference]: With dead ends: 29 [2020-11-29 18:23:22,920 INFO L226 Difference]: Without dead ends: 12 [2020-11-29 18:23:22,925 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 18:23:22,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-11-29 18:23:22,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-11-29 18:23:22,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-11-29 18:23:22,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 11 transitions. [2020-11-29 18:23:22,964 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 11 transitions. Word has length 11 [2020-11-29 18:23:22,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:23:22,965 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 11 transitions. [2020-11-29 18:23:22,965 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 18:23:22,965 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 11 transitions. [2020-11-29 18:23:22,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-29 18:23:22,966 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:23:22,966 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:23:22,966 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 18:23:22,967 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:23:22,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:23:22,968 INFO L82 PathProgramCache]: Analyzing trace with hash 33364332, now seen corresponding path program 1 times [2020-11-29 18:23:22,968 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:23:22,968 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365520506] [2020-11-29 18:23:22,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:23:23,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:23:23,012 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:23:23,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:23:23,031 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:23:23,079 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 18:23:23,080 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 18:23:23,081 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 18:23:23,122 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 06:23:23 BoogieIcfgContainer [2020-11-29 18:23:23,122 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 18:23:23,123 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 18:23:23,123 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 18:23:23,124 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 18:23:23,124 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:23:22" (3/4) ... [2020-11-29 18:23:23,128 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-29 18:23:23,128 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 18:23:23,131 INFO L168 Benchmark]: Toolchain (without parser) took 1515.11 ms. Allocated memory is still 153.1 MB. Free memory was 128.2 MB in the beginning and 95.2 MB in the end (delta: 33.0 MB). Peak memory consumption was 31.8 MB. Max. memory is 16.1 GB. [2020-11-29 18:23:23,132 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 96.5 MB. Free memory is still 54.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 18:23:23,133 INFO L168 Benchmark]: CACSL2BoogieTranslator took 329.24 ms. Allocated memory is still 153.1 MB. Free memory was 128.2 MB in the beginning and 130.2 MB in the end (delta: -1.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-29 18:23:23,134 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.76 ms. Allocated memory is still 153.1 MB. Free memory was 130.2 MB in the beginning and 128.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 18:23:23,135 INFO L168 Benchmark]: Boogie Preprocessor took 22.74 ms. Allocated memory is still 153.1 MB. Free memory was 128.7 MB in the beginning and 127.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 18:23:23,135 INFO L168 Benchmark]: RCFGBuilder took 526.49 ms. Allocated memory is still 153.1 MB. Free memory was 127.3 MB in the beginning and 115.5 MB in the end (delta: 11.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-29 18:23:23,136 INFO L168 Benchmark]: TraceAbstraction took 584.43 ms. Allocated memory is still 153.1 MB. Free memory was 114.7 MB in the beginning and 95.2 MB in the end (delta: 19.5 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2020-11-29 18:23:23,137 INFO L168 Benchmark]: Witness Printer took 5.50 ms. Allocated memory is still 153.1 MB. Free memory is still 95.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 18:23:23,141 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 96.5 MB. Free memory is still 54.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 329.24 ms. Allocated memory is still 153.1 MB. Free memory was 128.2 MB in the beginning and 130.2 MB in the end (delta: -1.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 36.76 ms. Allocated memory is still 153.1 MB. Free memory was 130.2 MB in the beginning and 128.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 22.74 ms. Allocated memory is still 153.1 MB. Free memory was 128.7 MB in the beginning and 127.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 526.49 ms. Allocated memory is still 153.1 MB. Free memory was 127.3 MB in the beginning and 115.5 MB in the end (delta: 11.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 584.43 ms. Allocated memory is still 153.1 MB. Free memory was 114.7 MB in the beginning and 95.2 MB in the end (delta: 19.5 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * Witness Printer took 5.50 ms. Allocated memory is still 153.1 MB. Free memory is still 95.2 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 35. 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) [L41] COND TRUE !(x < 0.1) [L12] COND FALSE !(0) [L12] __assert_fail ("0", "newton_2_8.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: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 15 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=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, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 100 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 18:23:26,113 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 18:23:26,116 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 18:23:26,175 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 18:23:26,176 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 18:23:26,178 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 18:23:26,180 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 18:23:26,183 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 18:23:26,186 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 18:23:26,188 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 18:23:26,189 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 18:23:26,191 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 18:23:26,192 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 18:23:26,193 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 18:23:26,195 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 18:23:26,197 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 18:23:26,199 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 18:23:26,200 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 18:23:26,203 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 18:23:26,206 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 18:23:26,209 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 18:23:26,215 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 18:23:26,217 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 18:23:26,218 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 18:23:26,223 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 18:23:26,224 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 18:23:26,224 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 18:23:26,226 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 18:23:26,241 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 18:23:26,245 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 18:23:26,246 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 18:23:26,247 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 18:23:26,250 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 18:23:26,251 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 18:23:26,253 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 18:23:26,253 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 18:23:26,254 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 18:23:26,255 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 18:23:26,255 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 18:23:26,258 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 18:23:26,259 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 18:23:26,260 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_7c48d595-c921-44d5-9d92-efd3e621b3b6/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-11-29 18:23:26,314 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 18:23:26,315 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 18:23:26,316 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 18:23:26,317 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 18:23:26,317 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 18:23:26,317 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 18:23:26,317 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 18:23:26,318 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 18:23:26,318 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 18:23:26,318 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 18:23:26,319 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 18:23:26,319 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 18:23:26,319 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-29 18:23:26,319 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-29 18:23:26,320 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 18:23:26,320 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 18:23:26,320 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 18:23:26,320 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 18:23:26,321 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 18:23:26,321 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 18:23:26,321 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 18:23:26,322 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 18:23:26,322 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 18:23:26,322 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 18:23:26,322 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 18:23:26,323 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 18:23:26,323 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-29 18:23:26,323 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-29 18:23:26,324 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 18:23:26,324 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 18:23:26,324 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-29 18:23:26,324 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_7c48d595-c921-44d5-9d92-efd3e621b3b6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_7c48d595-c921-44d5-9d92-efd3e621b3b6/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 80de2bcb413ca82cf36ee5cabb22cc23421a986b [2020-11-29 18:23:26,735 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 18:23:26,783 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 18:23:26,786 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 18:23:26,788 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 18:23:26,789 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 18:23:26,790 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_7c48d595-c921-44d5-9d92-efd3e621b3b6/bin/uautomizer/../../sv-benchmarks/c/floats-cdfpl/newton_2_8.i [2020-11-29 18:23:26,876 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7c48d595-c921-44d5-9d92-efd3e621b3b6/bin/uautomizer/data/35ee88a28/694ba4f3464b4da3bc7e21d08f0ff8a7/FLAG6ec5ac73a [2020-11-29 18:23:27,483 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 18:23:27,484 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_7c48d595-c921-44d5-9d92-efd3e621b3b6/sv-benchmarks/c/floats-cdfpl/newton_2_8.i [2020-11-29 18:23:27,493 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7c48d595-c921-44d5-9d92-efd3e621b3b6/bin/uautomizer/data/35ee88a28/694ba4f3464b4da3bc7e21d08f0ff8a7/FLAG6ec5ac73a [2020-11-29 18:23:27,765 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_7c48d595-c921-44d5-9d92-efd3e621b3b6/bin/uautomizer/data/35ee88a28/694ba4f3464b4da3bc7e21d08f0ff8a7 [2020-11-29 18:23:27,768 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 18:23:27,769 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 18:23:27,771 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 18:23:27,771 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 18:23:27,775 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 18:23:27,776 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:23:27" (1/1) ... [2020-11-29 18:23:27,778 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15aae01c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:23:27, skipping insertion in model container [2020-11-29 18:23:27,778 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:23:27" (1/1) ... [2020-11-29 18:23:27,787 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 18:23:27,805 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 18:23:27,960 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 18:23:27,973 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 18:23:27,993 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 18:23:28,010 INFO L208 MainTranslator]: Completed translation [2020-11-29 18:23:28,011 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:23:28 WrapperNode [2020-11-29 18:23:28,011 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 18:23:28,012 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 18:23:28,012 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 18:23:28,013 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 18:23:28,020 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:23:28" (1/1) ... [2020-11-29 18:23:28,029 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:23:28" (1/1) ... [2020-11-29 18:23:28,072 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 18:23:28,074 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 18:23:28,075 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 18:23:28,076 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 18:23:28,084 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:23:28" (1/1) ... [2020-11-29 18:23:28,085 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:23:28" (1/1) ... [2020-11-29 18:23:28,105 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:23:28" (1/1) ... [2020-11-29 18:23:28,105 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:23:28" (1/1) ... [2020-11-29 18:23:28,113 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:23:28" (1/1) ... [2020-11-29 18:23:28,124 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:23:28" (1/1) ... [2020-11-29 18:23:28,126 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:23:28" (1/1) ... [2020-11-29 18:23:28,130 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 18:23:28,131 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 18:23:28,131 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 18:23:28,131 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 18:23:28,132 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:23:28" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c48d595-c921-44d5-9d92-efd3e621b3b6/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 18:23:28,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-29 18:23:28,198 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 18:23:28,198 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 18:23:28,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 18:23:41,610 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 18:23:41,610 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-11-29 18:23:41,612 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:23:41 BoogieIcfgContainer [2020-11-29 18:23:41,612 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 18:23:41,614 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 18:23:41,614 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 18:23:41,618 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 18:23:41,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 06:23:27" (1/3) ... [2020-11-29 18:23:41,619 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32aecbea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:23:41, skipping insertion in model container [2020-11-29 18:23:41,619 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:23:28" (2/3) ... [2020-11-29 18:23:41,620 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32aecbea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:23:41, skipping insertion in model container [2020-11-29 18:23:41,620 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:23:41" (3/3) ... [2020-11-29 18:23:41,622 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_2_8.i [2020-11-29 18:23:41,635 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 18:23:41,640 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 18:23:41,654 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-29 18:23:41,682 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 18:23:41,682 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 18:23:41,683 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 18:23:41,683 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 18:23:41,683 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 18:23:41,683 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 18:23:41,683 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 18:23:41,684 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 18:23:41,698 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2020-11-29 18:23:41,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-29 18:23:41,704 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:23:41,705 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:23:41,705 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:23:41,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:23:41,712 INFO L82 PathProgramCache]: Analyzing trace with hash -646694038, now seen corresponding path program 1 times [2020-11-29 18:23:41,725 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 18:23:41,725 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [739340787] [2020-11-29 18:23:41,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c48d595-c921-44d5-9d92-efd3e621b3b6/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 18:23:44,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:23:44,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-29 18:23:44,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:23:44,236 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 18:23:44,236 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 18:23:44,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:23:44,242 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [739340787] [2020-11-29 18:23:44,243 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:23:44,243 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-29 18:23:44,244 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815931121] [2020-11-29 18:23:44,249 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 18:23:44,249 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 18:23:44,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 18:23:44,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 18:23:44,265 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 2 states. [2020-11-29 18:23:44,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:23:44,281 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2020-11-29 18:23:44,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 18:23:44,283 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-11-29 18:23:44,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:23:44,292 INFO L225 Difference]: With dead ends: 29 [2020-11-29 18:23:44,292 INFO L226 Difference]: Without dead ends: 12 [2020-11-29 18:23:44,296 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 [2020-11-29 18:23:44,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-11-29 18:23:44,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-11-29 18:23:44,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-11-29 18:23:44,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 11 transitions. [2020-11-29 18:23:44,332 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 11 transitions. Word has length 11 [2020-11-29 18:23:44,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:23:44,333 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 11 transitions. [2020-11-29 18:23:44,333 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 18:23:44,333 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 11 transitions. [2020-11-29 18:23:44,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-29 18:23:44,334 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:23:44,334 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:23:44,550 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-29 18:23:44,551 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:23:44,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:23:44,552 INFO L82 PathProgramCache]: Analyzing trace with hash 33364332, now seen corresponding path program 1 times [2020-11-29 18:23:44,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 18:23:44,553 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [507328467] [2020-11-29 18:23:44,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c48d595-c921-44d5-9d92-efd3e621b3b6/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 18:24:02,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:24:02,958 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:24:12,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:24:12,888 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:24:13,124 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-11-29 18:24:13,124 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 18:24:13,326 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-29 18:24:13,383 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 06:24:13 BoogieIcfgContainer [2020-11-29 18:24:13,383 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 18:24:13,384 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 18:24:13,384 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 18:24:13,384 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 18:24:13,385 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:23:41" (3/4) ... [2020-11-29 18:24:13,388 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-29 18:24:13,434 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_7c48d595-c921-44d5-9d92-efd3e621b3b6/bin/uautomizer/witness.graphml [2020-11-29 18:24:13,435 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 18:24:13,437 INFO L168 Benchmark]: Toolchain (without parser) took 45666.53 ms. Allocated memory is still 62.9 MB. Free memory was 43.9 MB in the beginning and 39.6 MB in the end (delta: 4.3 MB). Peak memory consumption was 5.2 MB. Max. memory is 16.1 GB. [2020-11-29 18:24:13,439 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 62.9 MB. Free memory is still 44.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 18:24:13,440 INFO L168 Benchmark]: CACSL2BoogieTranslator took 240.95 ms. Allocated memory is still 62.9 MB. Free memory was 43.7 MB in the beginning and 33.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-29 18:24:13,442 INFO L168 Benchmark]: Boogie Procedure Inliner took 61.17 ms. Allocated memory is still 62.9 MB. Free memory was 33.1 MB in the beginning and 46.8 MB in the end (delta: -13.8 MB). Peak memory consumption was 5.3 MB. Max. memory is 16.1 GB. [2020-11-29 18:24:13,446 INFO L168 Benchmark]: Boogie Preprocessor took 55.62 ms. Allocated memory is still 62.9 MB. Free memory was 46.8 MB in the beginning and 45.5 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 18:24:13,448 INFO L168 Benchmark]: RCFGBuilder took 13481.53 ms. Allocated memory is still 62.9 MB. Free memory was 45.5 MB in the beginning and 33.2 MB in the end (delta: 12.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-29 18:24:13,448 INFO L168 Benchmark]: TraceAbstraction took 31769.63 ms. Allocated memory is still 62.9 MB. Free memory was 32.7 MB in the beginning and 41.6 MB in the end (delta: -9.0 MB). Peak memory consumption was 12.5 MB. Max. memory is 16.1 GB. [2020-11-29 18:24:13,450 INFO L168 Benchmark]: Witness Printer took 50.72 ms. Allocated memory is still 62.9 MB. Free memory was 41.6 MB in the beginning and 39.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 18:24:13,453 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 62.9 MB. Free memory is still 44.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 240.95 ms. Allocated memory is still 62.9 MB. Free memory was 43.7 MB in the beginning and 33.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 61.17 ms. Allocated memory is still 62.9 MB. Free memory was 33.1 MB in the beginning and 46.8 MB in the end (delta: -13.8 MB). Peak memory consumption was 5.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 55.62 ms. Allocated memory is still 62.9 MB. Free memory was 46.8 MB in the beginning and 45.5 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 13481.53 ms. Allocated memory is still 62.9 MB. Free memory was 45.5 MB in the beginning and 33.2 MB in the end (delta: 12.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 31769.63 ms. Allocated memory is still 62.9 MB. Free memory was 32.7 MB in the beginning and 41.6 MB in the end (delta: -9.0 MB). Peak memory consumption was 12.5 MB. Max. memory is 16.1 GB. * Witness Printer took 50.72 ms. Allocated memory is still 62.9 MB. Free memory was 41.6 MB in the beginning and 39.6 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) [L41] COND TRUE !(x < 0.1) [L12] COND FALSE !(0) [L12] __assert_fail ("0", "newton_2_8.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: 31.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 15 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, 20.6s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 200 SizeOfPredicates, 0 NumberOfNonLiveVariables, 41 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...