./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cdfpl/newton_1_8.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_c2dae2f6-a196-416a-82ec-1a498d5829ab/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_c2dae2f6-a196-416a-82ec-1a498d5829ab/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_c2dae2f6-a196-416a-82ec-1a498d5829ab/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_c2dae2f6-a196-416a-82ec-1a498d5829ab/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/newton_1_8.i -s /tmp/vcloud-vcloud-master/worker/run_dir_c2dae2f6-a196-416a-82ec-1a498d5829ab/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_c2dae2f6-a196-416a-82ec-1a498d5829ab/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 9a455407b4fd80f1691ee95c228274faaa3c38f0 ............................................................................................................................................................................................................................................................................ 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_c2dae2f6-a196-416a-82ec-1a498d5829ab/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_c2dae2f6-a196-416a-82ec-1a498d5829ab/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_c2dae2f6-a196-416a-82ec-1a498d5829ab/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_c2dae2f6-a196-416a-82ec-1a498d5829ab/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/newton_1_8.i -s /tmp/vcloud-vcloud-master/worker/run_dir_c2dae2f6-a196-416a-82ec-1a498d5829ab/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_c2dae2f6-a196-416a-82ec-1a498d5829ab/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 9a455407b4fd80f1691ee95c228274faaa3c38f0 ........................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 01:27:23,133 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 01:27:23,148 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 01:27:23,202 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 01:27:23,203 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 01:27:23,209 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 01:27:23,214 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 01:27:23,223 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 01:27:23,226 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 01:27:23,234 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 01:27:23,235 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 01:27:23,237 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 01:27:23,237 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 01:27:23,238 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 01:27:23,240 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 01:27:23,241 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 01:27:23,242 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 01:27:23,244 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 01:27:23,248 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 01:27:23,256 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 01:27:23,259 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 01:27:23,261 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 01:27:23,264 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 01:27:23,265 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 01:27:23,271 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 01:27:23,272 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 01:27:23,272 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 01:27:23,274 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 01:27:23,275 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 01:27:23,276 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 01:27:23,276 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 01:27:23,278 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 01:27:23,280 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 01:27:23,281 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 01:27:23,283 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 01:27:23,283 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 01:27:23,284 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 01:27:23,284 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 01:27:23,284 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 01:27:23,286 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 01:27:23,286 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 01:27:23,289 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_c2dae2f6-a196-416a-82ec-1a498d5829ab/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-30 01:27:23,331 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 01:27:23,331 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 01:27:23,333 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 01:27:23,333 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 01:27:23,334 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 01:27:23,334 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 01:27:23,334 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 01:27:23,334 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 01:27:23,335 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 01:27:23,335 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 01:27:23,336 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 01:27:23,336 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 01:27:23,336 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 01:27:23,336 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 01:27:23,337 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 01:27:23,337 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 01:27:23,337 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 01:27:23,337 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 01:27:23,338 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 01:27:23,338 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 01:27:23,338 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 01:27:23,338 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 01:27:23,338 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 01:27:23,339 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 01:27:23,339 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 01:27:23,339 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 01:27:23,339 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 01:27:23,339 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 01:27:23,340 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 01:27:23,340 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_c2dae2f6-a196-416a-82ec-1a498d5829ab/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_c2dae2f6-a196-416a-82ec-1a498d5829ab/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9a455407b4fd80f1691ee95c228274faaa3c38f0 [2020-11-30 01:27:23,634 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 01:27:23,665 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 01:27:23,669 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 01:27:23,670 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 01:27:23,672 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 01:27:23,673 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_c2dae2f6-a196-416a-82ec-1a498d5829ab/bin/uautomizer/../../sv-benchmarks/c/floats-cdfpl/newton_1_8.i [2020-11-30 01:27:23,762 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c2dae2f6-a196-416a-82ec-1a498d5829ab/bin/uautomizer/data/8c7376d82/32464dc5ab37496fba7b85b40810aaf2/FLAG8add142df [2020-11-30 01:27:24,192 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 01:27:24,193 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_c2dae2f6-a196-416a-82ec-1a498d5829ab/sv-benchmarks/c/floats-cdfpl/newton_1_8.i [2020-11-30 01:27:24,206 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c2dae2f6-a196-416a-82ec-1a498d5829ab/bin/uautomizer/data/8c7376d82/32464dc5ab37496fba7b85b40810aaf2/FLAG8add142df [2020-11-30 01:27:24,599 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_c2dae2f6-a196-416a-82ec-1a498d5829ab/bin/uautomizer/data/8c7376d82/32464dc5ab37496fba7b85b40810aaf2 [2020-11-30 01:27:24,602 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 01:27:24,603 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 01:27:24,610 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 01:27:24,611 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 01:27:24,614 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 01:27:24,616 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:27:24" (1/1) ... [2020-11-30 01:27:24,618 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c64b089 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:27:24, skipping insertion in model container [2020-11-30 01:27:24,618 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:27:24" (1/1) ... [2020-11-30 01:27:24,625 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 01:27:24,643 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 01:27:24,838 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:27:24,855 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 01:27:24,893 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:27:24,910 INFO L208 MainTranslator]: Completed translation [2020-11-30 01:27:24,912 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:27:24 WrapperNode [2020-11-30 01:27:24,912 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 01:27:24,914 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 01:27:24,914 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 01:27:24,914 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 01:27:24,922 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:27:24" (1/1) ... [2020-11-30 01:27:24,933 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:27:24" (1/1) ... [2020-11-30 01:27:24,954 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 01:27:24,955 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 01:27:24,956 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 01:27:24,956 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 01:27:24,965 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:27:24" (1/1) ... [2020-11-30 01:27:24,965 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:27:24" (1/1) ... [2020-11-30 01:27:24,976 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:27:24" (1/1) ... [2020-11-30 01:27:24,976 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:27:24" (1/1) ... [2020-11-30 01:27:24,985 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:27:24" (1/1) ... [2020-11-30 01:27:24,996 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:27:24" (1/1) ... [2020-11-30 01:27:24,997 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:27:24" (1/1) ... [2020-11-30 01:27:24,999 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 01:27:24,999 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 01:27:25,000 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 01:27:25,001 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 01:27:25,002 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:27:24" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c2dae2f6-a196-416a-82ec-1a498d5829ab/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 [2020-11-30 01:27:25,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 01:27:25,078 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 01:27:25,078 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 01:27:25,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 01:27:25,387 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 01:27:25,387 INFO L298 CfgBuilder]: Removed 12 assume(true) statements. [2020-11-30 01:27:25,389 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:27:25 BoogieIcfgContainer [2020-11-30 01:27:25,389 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 01:27:25,391 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 01:27:25,391 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 01:27:25,394 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 01:27:25,394 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 01:27:24" (1/3) ... [2020-11-30 01:27:25,395 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e7e8304 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:27:25, skipping insertion in model container [2020-11-30 01:27:25,395 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:27:24" (2/3) ... [2020-11-30 01:27:25,410 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e7e8304 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:27:25, skipping insertion in model container [2020-11-30 01:27:25,410 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:27:25" (3/3) ... [2020-11-30 01:27:25,412 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_1_8.i [2020-11-30 01:27:25,422 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 01:27:25,430 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-30 01:27:25,448 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-30 01:27:25,490 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 01:27:25,492 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 01:27:25,493 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 01:27:25,493 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 01:27:25,493 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 01:27:25,493 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 01:27:25,493 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 01:27:25,493 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 01:27:25,512 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2020-11-30 01:27:25,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-30 01:27:25,518 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:27:25,519 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:27:25,520 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:27:25,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:27:25,527 INFO L82 PathProgramCache]: Analyzing trace with hash -595084600, now seen corresponding path program 1 times [2020-11-30 01:27:25,537 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:27:25,538 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680868523] [2020-11-30 01:27:25,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:27:25,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:27:25,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:27:25,691 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680868523] [2020-11-30 01:27:25,691 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:27:25,692 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 01:27:25,693 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349177786] [2020-11-30 01:27:25,698 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-30 01:27:25,698 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:27:25,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 01:27:25,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 01:27:25,717 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 2 states. [2020-11-30 01:27:25,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:27:25,733 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2020-11-30 01:27:25,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 01:27:25,735 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2020-11-30 01:27:25,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:27:25,744 INFO L225 Difference]: With dead ends: 25 [2020-11-30 01:27:25,744 INFO L226 Difference]: Without dead ends: 10 [2020-11-30 01:27:25,748 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 [2020-11-30 01:27:25,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-11-30 01:27:25,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2020-11-30 01:27:25,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-11-30 01:27:25,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 9 transitions. [2020-11-30 01:27:25,810 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 9 transitions. Word has length 9 [2020-11-30 01:27:25,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:27:25,811 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 9 transitions. [2020-11-30 01:27:25,811 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-30 01:27:25,812 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 9 transitions. [2020-11-30 01:27:25,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-30 01:27:25,813 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:27:25,813 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:27:25,814 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 01:27:25,814 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:27:25,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:27:25,817 INFO L82 PathProgramCache]: Analyzing trace with hash 1179922762, now seen corresponding path program 1 times [2020-11-30 01:27:25,818 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:27:25,818 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713505078] [2020-11-30 01:27:25,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:27:25,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:27:25,865 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:27:25,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:27:25,892 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:27:25,923 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:27:25,924 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 01:27:25,925 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 01:27:25,955 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 01:27:25 BoogieIcfgContainer [2020-11-30 01:27:25,956 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 01:27:25,957 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 01:27:25,957 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 01:27:25,958 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 01:27:25,958 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:27:25" (3/4) ... [2020-11-30 01:27:25,962 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-30 01:27:25,963 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 01:27:25,969 INFO L168 Benchmark]: Toolchain (without parser) took 1360.34 ms. Allocated memory was 81.8 MB in the beginning and 98.6 MB in the end (delta: 16.8 MB). Free memory was 49.1 MB in the beginning and 72.3 MB in the end (delta: -23.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:27:25,970 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 81.8 MB. Free memory was 54.7 MB in the beginning and 54.6 MB in the end (delta: 28.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:27:25,972 INFO L168 Benchmark]: CACSL2BoogieTranslator took 301.93 ms. Allocated memory is still 81.8 MB. Free memory was 48.9 MB in the beginning and 59.3 MB in the end (delta: -10.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 01:27:25,973 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.67 ms. Allocated memory is still 81.8 MB. Free memory was 59.3 MB in the beginning and 57.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:27:25,974 INFO L168 Benchmark]: Boogie Preprocessor took 43.72 ms. Allocated memory is still 81.8 MB. Free memory was 57.8 MB in the beginning and 56.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:27:25,975 INFO L168 Benchmark]: RCFGBuilder took 389.70 ms. Allocated memory is still 81.8 MB. Free memory was 56.7 MB in the beginning and 45.9 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-30 01:27:25,976 INFO L168 Benchmark]: TraceAbstraction took 565.54 ms. Allocated memory was 81.8 MB in the beginning and 98.6 MB in the end (delta: 16.8 MB). Free memory was 45.3 MB in the beginning and 72.8 MB in the end (delta: -27.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:27:25,977 INFO L168 Benchmark]: Witness Printer took 5.87 ms. Allocated memory is still 98.6 MB. Free memory is still 72.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:27:25,990 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 81.8 MB. Free memory was 54.7 MB in the beginning and 54.6 MB in the end (delta: 28.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 301.93 ms. Allocated memory is still 81.8 MB. Free memory was 48.9 MB in the beginning and 59.3 MB in the end (delta: -10.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 40.67 ms. Allocated memory is still 81.8 MB. Free memory was 59.3 MB in the beginning and 57.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 43.72 ms. Allocated memory is still 81.8 MB. Free memory was 57.8 MB in the beginning and 56.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 389.70 ms. Allocated memory is still 81.8 MB. Free memory was 56.7 MB in the beginning and 45.9 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 565.54 ms. Allocated memory was 81.8 MB in the beginning and 98.6 MB in the end (delta: 16.8 MB). Free memory was 45.3 MB in the beginning and 72.8 MB in the end (delta: -27.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 5.87 ms. Allocated memory is still 98.6 MB. Free memory is still 72.3 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 33. Possible FailurePath: [L30] float IN = __VERIFIER_nondet_float(); [L15] COND FALSE !(!cond) [L20] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L25] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L33] float x = IN - f(IN)/fp(IN); [L41] COND TRUE !(x < 0.1) [L12] COND FALSE !(0) [L12] __assert_fail ("0", "newton_1_8.c", 3, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 13 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 64 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-a4ecdab [2020-11-30 01:27:28,605 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 01:27:28,609 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 01:27:28,664 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 01:27:28,665 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 01:27:28,669 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 01:27:28,673 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 01:27:28,677 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 01:27:28,680 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 01:27:28,686 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 01:27:28,688 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 01:27:28,711 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 01:27:28,711 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 01:27:28,714 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 01:27:28,716 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 01:27:28,718 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 01:27:28,719 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 01:27:28,724 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 01:27:28,728 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 01:27:28,732 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 01:27:28,736 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 01:27:28,738 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 01:27:28,740 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 01:27:28,742 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 01:27:28,752 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 01:27:28,753 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 01:27:28,754 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 01:27:28,756 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 01:27:28,757 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 01:27:28,758 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 01:27:28,759 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 01:27:28,760 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 01:27:28,762 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 01:27:28,763 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 01:27:28,764 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 01:27:28,764 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 01:27:28,765 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 01:27:28,766 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 01:27:28,766 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 01:27:28,768 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 01:27:28,769 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 01:27:28,770 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_c2dae2f6-a196-416a-82ec-1a498d5829ab/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-11-30 01:27:28,810 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 01:27:28,811 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 01:27:28,814 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 01:27:28,815 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 01:27:28,815 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 01:27:28,815 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 01:27:28,815 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 01:27:28,816 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 01:27:28,816 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 01:27:28,816 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 01:27:28,817 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 01:27:28,817 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 01:27:28,817 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-30 01:27:28,818 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-30 01:27:28,818 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 01:27:28,818 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 01:27:28,818 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 01:27:28,818 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 01:27:28,819 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 01:27:28,819 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 01:27:28,819 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 01:27:28,819 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 01:27:28,819 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 01:27:28,820 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 01:27:28,820 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 01:27:28,820 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 01:27:28,820 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-30 01:27:28,820 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-30 01:27:28,820 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 01:27:28,821 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 01:27:28,821 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 01:27:28,821 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_c2dae2f6-a196-416a-82ec-1a498d5829ab/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_c2dae2f6-a196-416a-82ec-1a498d5829ab/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9a455407b4fd80f1691ee95c228274faaa3c38f0 [2020-11-30 01:27:29,185 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 01:27:29,209 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 01:27:29,212 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 01:27:29,214 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 01:27:29,214 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 01:27:29,216 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_c2dae2f6-a196-416a-82ec-1a498d5829ab/bin/uautomizer/../../sv-benchmarks/c/floats-cdfpl/newton_1_8.i [2020-11-30 01:27:29,289 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c2dae2f6-a196-416a-82ec-1a498d5829ab/bin/uautomizer/data/78e25cc9e/b0ae2a9df6e54c49b1849a59cceaf299/FLAG1029ab1b1 [2020-11-30 01:27:29,782 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 01:27:29,783 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_c2dae2f6-a196-416a-82ec-1a498d5829ab/sv-benchmarks/c/floats-cdfpl/newton_1_8.i [2020-11-30 01:27:29,793 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c2dae2f6-a196-416a-82ec-1a498d5829ab/bin/uautomizer/data/78e25cc9e/b0ae2a9df6e54c49b1849a59cceaf299/FLAG1029ab1b1 [2020-11-30 01:27:30,151 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_c2dae2f6-a196-416a-82ec-1a498d5829ab/bin/uautomizer/data/78e25cc9e/b0ae2a9df6e54c49b1849a59cceaf299 [2020-11-30 01:27:30,153 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 01:27:30,155 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 01:27:30,157 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 01:27:30,157 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 01:27:30,161 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 01:27:30,163 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:27:30" (1/1) ... [2020-11-30 01:27:30,170 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@667acc09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:27:30, skipping insertion in model container [2020-11-30 01:27:30,170 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:27:30" (1/1) ... [2020-11-30 01:27:30,178 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 01:27:30,193 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 01:27:30,427 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:27:30,443 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 01:27:30,483 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:27:30,507 INFO L208 MainTranslator]: Completed translation [2020-11-30 01:27:30,508 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:27:30 WrapperNode [2020-11-30 01:27:30,509 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 01:27:30,510 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 01:27:30,511 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 01:27:30,513 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 01:27:30,521 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:27:30" (1/1) ... [2020-11-30 01:27:30,551 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:27:30" (1/1) ... [2020-11-30 01:27:30,592 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 01:27:30,593 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 01:27:30,593 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 01:27:30,593 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 01:27:30,602 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:27:30" (1/1) ... [2020-11-30 01:27:30,603 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:27:30" (1/1) ... [2020-11-30 01:27:30,610 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:27:30" (1/1) ... [2020-11-30 01:27:30,610 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:27:30" (1/1) ... [2020-11-30 01:27:30,633 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:27:30" (1/1) ... [2020-11-30 01:27:30,641 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:27:30" (1/1) ... [2020-11-30 01:27:30,643 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:27:30" (1/1) ... [2020-11-30 01:27:30,649 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 01:27:30,650 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 01:27:30,651 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 01:27:30,652 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 01:27:30,653 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:27:30" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c2dae2f6-a196-416a-82ec-1a498d5829ab/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 [2020-11-30 01:27:30,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-30 01:27:30,733 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 01:27:30,734 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 01:27:30,734 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 01:27:38,002 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 01:27:38,002 INFO L298 CfgBuilder]: Removed 12 assume(true) statements. [2020-11-30 01:27:38,004 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:27:38 BoogieIcfgContainer [2020-11-30 01:27:38,004 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 01:27:38,006 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 01:27:38,006 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 01:27:38,009 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 01:27:38,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 01:27:30" (1/3) ... [2020-11-30 01:27:38,024 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c8c95fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:27:38, skipping insertion in model container [2020-11-30 01:27:38,025 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:27:30" (2/3) ... [2020-11-30 01:27:38,025 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c8c95fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:27:38, skipping insertion in model container [2020-11-30 01:27:38,025 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:27:38" (3/3) ... [2020-11-30 01:27:38,027 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_1_8.i [2020-11-30 01:27:38,039 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 01:27:38,046 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-30 01:27:38,058 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-30 01:27:38,097 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 01:27:38,097 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 01:27:38,098 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 01:27:38,098 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 01:27:38,098 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 01:27:38,098 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 01:27:38,098 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 01:27:38,099 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 01:27:38,114 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2020-11-30 01:27:38,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-30 01:27:38,121 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:27:38,121 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:27:38,122 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:27:38,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:27:38,129 INFO L82 PathProgramCache]: Analyzing trace with hash -595084600, now seen corresponding path program 1 times [2020-11-30 01:27:38,142 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 01:27:38,143 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2033065663] [2020-11-30 01:27:38,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c2dae2f6-a196-416a-82ec-1a498d5829ab/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 [2020-11-30 01:27:39,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:27:39,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-30 01:27:39,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:27:39,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:27:39,662 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:27:39,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:27:39,667 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2033065663] [2020-11-30 01:27:39,667 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:27:39,668 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-30 01:27:39,669 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769531916] [2020-11-30 01:27:39,672 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-30 01:27:39,673 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 01:27:39,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 01:27:39,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 01:27:39,686 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 2 states. [2020-11-30 01:27:39,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:27:39,700 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2020-11-30 01:27:39,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 01:27:39,702 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2020-11-30 01:27:39,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:27:39,709 INFO L225 Difference]: With dead ends: 25 [2020-11-30 01:27:39,710 INFO L226 Difference]: Without dead ends: 10 [2020-11-30 01:27:39,712 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 01:27:39,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-11-30 01:27:39,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2020-11-30 01:27:39,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-11-30 01:27:39,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 9 transitions. [2020-11-30 01:27:39,751 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 9 transitions. Word has length 9 [2020-11-30 01:27:39,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:27:39,766 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 9 transitions. [2020-11-30 01:27:39,766 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-30 01:27:39,766 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 9 transitions. [2020-11-30 01:27:39,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-30 01:27:39,767 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:27:39,767 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:27:39,982 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-30 01:27:39,983 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:27:39,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:27:39,984 INFO L82 PathProgramCache]: Analyzing trace with hash 1179922762, now seen corresponding path program 1 times [2020-11-30 01:27:39,985 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 01:27:39,985 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1261646913] [2020-11-30 01:27:39,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c2dae2f6-a196-416a-82ec-1a498d5829ab/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 [2020-11-30 01:27:44,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:27:44,840 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:28:28,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:28:28,640 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:28:28,763 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-11-30 01:28:28,763 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 01:28:28,964 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-30 01:28:28,983 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 01:28:28 BoogieIcfgContainer [2020-11-30 01:28:28,983 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 01:28:28,984 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 01:28:28,984 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 01:28:28,990 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 01:28:28,991 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:27:38" (3/4) ... [2020-11-30 01:28:28,993 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-30 01:28:29,027 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_c2dae2f6-a196-416a-82ec-1a498d5829ab/bin/uautomizer/witness.graphml [2020-11-30 01:28:29,028 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 01:28:29,030 INFO L168 Benchmark]: Toolchain (without parser) took 58873.74 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 23.5 MB in the beginning and 29.9 MB in the end (delta: -6.3 MB). Peak memory consumption was 3.5 MB. Max. memory is 16.1 GB. [2020-11-30 01:28:29,032 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 48.2 MB. Free memory was 30.0 MB in the beginning and 30.0 MB in the end (delta: 31.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:28:29,035 INFO L168 Benchmark]: CACSL2BoogieTranslator took 351.93 ms. Allocated memory is still 48.2 MB. Free memory was 23.3 MB in the beginning and 23.9 MB in the end (delta: -627.6 kB). Peak memory consumption was 3.4 MB. Max. memory is 16.1 GB. [2020-11-30 01:28:29,036 INFO L168 Benchmark]: Boogie Procedure Inliner took 81.36 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 23.9 MB in the beginning and 41.5 MB in the end (delta: -17.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:28:29,039 INFO L168 Benchmark]: Boogie Preprocessor took 56.56 ms. Allocated memory is still 58.7 MB. Free memory was 41.5 MB in the beginning and 40.3 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:28:29,042 INFO L168 Benchmark]: RCFGBuilder took 7354.10 ms. Allocated memory is still 58.7 MB. Free memory was 40.3 MB in the beginning and 28.8 MB in the end (delta: 11.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-30 01:28:29,043 INFO L168 Benchmark]: TraceAbstraction took 50977.52 ms. Allocated memory is still 58.7 MB. Free memory was 28.4 MB in the beginning and 31.7 MB in the end (delta: -3.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:28:29,045 INFO L168 Benchmark]: Witness Printer took 44.37 ms. Allocated memory is still 58.7 MB. Free memory was 31.4 MB in the beginning and 29.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:28:29,048 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 48.2 MB. Free memory was 30.0 MB in the beginning and 30.0 MB in the end (delta: 31.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 351.93 ms. Allocated memory is still 48.2 MB. Free memory was 23.3 MB in the beginning and 23.9 MB in the end (delta: -627.6 kB). Peak memory consumption was 3.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 81.36 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 23.9 MB in the beginning and 41.5 MB in the end (delta: -17.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 56.56 ms. Allocated memory is still 58.7 MB. Free memory was 41.5 MB in the beginning and 40.3 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 7354.10 ms. Allocated memory is still 58.7 MB. Free memory was 40.3 MB in the beginning and 28.8 MB in the end (delta: 11.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 50977.52 ms. Allocated memory is still 58.7 MB. Free memory was 28.4 MB in the beginning and 31.7 MB in the end (delta: -3.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 44.37 ms. Allocated memory is still 58.7 MB. Free memory was 31.4 MB in the beginning and 29.9 MB in the end (delta: 1.6 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); [L41] COND TRUE !(x < 0.1) [L12] COND FALSE !(0) [L12] __assert_fail ("0", "newton_1_8.c", 3, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 50.8s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 13 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 6.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 128 SizeOfPredicates, 0 NumberOfNonLiveVariables, 33 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...