./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/sqrt_poly2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e5e11a-26ed-488e-b3a2-398514f41040/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e5e11a-26ed-488e-b3a2-398514f41040/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e5e11a-26ed-488e-b3a2-398514f41040/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e5e11a-26ed-488e-b3a2-398514f41040/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/sqrt_poly2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e5e11a-26ed-488e-b3a2-398514f41040/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e5e11a-26ed-488e-b3a2-398514f41040/bin/uautomizer-DrprNOufMa --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 14164d07a16e34a605f7e42a9694dd7b1f0302594742e37b160cf821b53bc94e --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 17:37:14,146 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 17:37:14,147 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 17:37:14,177 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 17:37:14,177 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 17:37:14,178 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 17:37:14,180 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 17:37:14,183 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 17:37:14,185 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 17:37:14,186 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 17:37:14,187 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 17:37:14,188 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 17:37:14,189 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 17:37:14,190 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 17:37:14,192 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 17:37:14,193 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 17:37:14,194 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 17:37:14,196 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 17:37:14,198 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 17:37:14,200 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 17:37:14,202 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 17:37:14,204 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 17:37:14,205 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 17:37:14,206 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 17:37:14,210 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 17:37:14,210 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 17:37:14,211 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 17:37:14,212 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 17:37:14,212 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 17:37:14,214 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 17:37:14,214 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 17:37:14,215 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 17:37:14,216 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 17:37:14,216 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 17:37:14,217 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 17:37:14,218 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 17:37:14,218 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 17:37:14,219 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 17:37:14,219 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 17:37:14,220 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 17:37:14,220 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 17:37:14,221 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e5e11a-26ed-488e-b3a2-398514f41040/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 17:37:14,246 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 17:37:14,247 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 17:37:14,247 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 17:37:14,247 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 17:37:14,248 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 17:37:14,248 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 17:37:14,248 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 17:37:14,248 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 17:37:14,248 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 17:37:14,249 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 17:37:14,249 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 17:37:14,249 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 17:37:14,249 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 17:37:14,249 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 17:37:14,249 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 17:37:14,250 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 17:37:14,250 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 17:37:14,250 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 17:37:14,250 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 17:37:14,250 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 17:37:14,250 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 17:37:14,250 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 17:37:14,251 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 17:37:14,251 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 17:37:14,251 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 17:37:14,251 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 17:37:14,251 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 17:37:14,251 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 17:37:14,256 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 17:37:14,257 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 17:37:14,257 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 17:37:14,257 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 17:37:14,257 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 17:37:14,257 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 17:37:14,258 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_worker_vcloud-master_on_vcloud-master/run_dir_08e5e11a-26ed-488e-b3a2-398514f41040/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e5e11a-26ed-488e-b3a2-398514f41040/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 14164d07a16e34a605f7e42a9694dd7b1f0302594742e37b160cf821b53bc94e [2021-12-06 17:37:14,454 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 17:37:14,469 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 17:37:14,471 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 17:37:14,472 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 17:37:14,472 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 17:37:14,473 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e5e11a-26ed-488e-b3a2-398514f41040/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/float-benchs/sqrt_poly2.c [2021-12-06 17:37:14,524 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e5e11a-26ed-488e-b3a2-398514f41040/bin/uautomizer-DrprNOufMa/data/4ed7f9973/aacb628cce914a038ca5f209dc9ff5d5/FLAGa00d75b2b [2021-12-06 17:37:14,925 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 17:37:14,926 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e5e11a-26ed-488e-b3a2-398514f41040/sv-benchmarks/c/float-benchs/sqrt_poly2.c [2021-12-06 17:37:14,932 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e5e11a-26ed-488e-b3a2-398514f41040/bin/uautomizer-DrprNOufMa/data/4ed7f9973/aacb628cce914a038ca5f209dc9ff5d5/FLAGa00d75b2b [2021-12-06 17:37:14,945 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e5e11a-26ed-488e-b3a2-398514f41040/bin/uautomizer-DrprNOufMa/data/4ed7f9973/aacb628cce914a038ca5f209dc9ff5d5 [2021-12-06 17:37:14,947 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 17:37:14,948 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 17:37:14,950 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 17:37:14,950 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 17:37:14,953 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 17:37:14,954 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 05:37:14" (1/1) ... [2021-12-06 17:37:14,955 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21237eba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:37:14, skipping insertion in model container [2021-12-06 17:37:14,955 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 05:37:14" (1/1) ... [2021-12-06 17:37:14,961 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 17:37:14,973 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 17:37:15,089 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e5e11a-26ed-488e-b3a2-398514f41040/sv-benchmarks/c/float-benchs/sqrt_poly2.c[587,600] [2021-12-06 17:37:15,106 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 17:37:15,115 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 17:37:15,124 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e5e11a-26ed-488e-b3a2-398514f41040/sv-benchmarks/c/float-benchs/sqrt_poly2.c[587,600] [2021-12-06 17:37:15,132 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 17:37:15,143 INFO L208 MainTranslator]: Completed translation [2021-12-06 17:37:15,143 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:37:15 WrapperNode [2021-12-06 17:37:15,143 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 17:37:15,144 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 17:37:15,144 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 17:37:15,144 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 17:37:15,151 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:37:15" (1/1) ... [2021-12-06 17:37:15,159 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:37:15" (1/1) ... [2021-12-06 17:37:15,180 INFO L137 Inliner]: procedures = 18, calls = 20, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 66 [2021-12-06 17:37:15,180 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 17:37:15,181 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 17:37:15,181 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 17:37:15,181 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 17:37:15,190 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:37:15" (1/1) ... [2021-12-06 17:37:15,190 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:37:15" (1/1) ... [2021-12-06 17:37:15,193 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:37:15" (1/1) ... [2021-12-06 17:37:15,193 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:37:15" (1/1) ... [2021-12-06 17:37:15,200 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:37:15" (1/1) ... [2021-12-06 17:37:15,202 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:37:15" (1/1) ... [2021-12-06 17:37:15,204 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:37:15" (1/1) ... [2021-12-06 17:37:15,206 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 17:37:15,207 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 17:37:15,207 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 17:37:15,207 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 17:37:15,208 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:37:15" (1/1) ... [2021-12-06 17:37:15,215 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 17:37:15,223 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e5e11a-26ed-488e-b3a2-398514f41040/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:37:15,232 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e5e11a-26ed-488e-b3a2-398514f41040/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 17:37:15,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e5e11a-26ed-488e-b3a2-398514f41040/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 17:37:15,271 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 17:37:15,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 17:37:15,271 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-06 17:37:15,272 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-12-06 17:37:15,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-06 17:37:15,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-12-06 17:37:15,272 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 17:37:15,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 17:37:15,272 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-06 17:37:15,272 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-06 17:37:15,338 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 17:37:15,340 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 17:37:15,432 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 17:37:15,436 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 17:37:15,437 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-06 17:37:15,438 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:37:15 BoogieIcfgContainer [2021-12-06 17:37:15,438 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 17:37:15,440 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 17:37:15,440 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 17:37:15,442 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 17:37:15,443 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 05:37:14" (1/3) ... [2021-12-06 17:37:15,443 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dbe9c3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 05:37:15, skipping insertion in model container [2021-12-06 17:37:15,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:37:15" (2/3) ... [2021-12-06 17:37:15,444 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dbe9c3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 05:37:15, skipping insertion in model container [2021-12-06 17:37:15,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:37:15" (3/3) ... [2021-12-06 17:37:15,445 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt_poly2.c [2021-12-06 17:37:15,449 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 17:37:15,450 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 17:37:15,486 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 17:37:15,492 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-06 17:37:15,492 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 17:37:15,503 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:37:15,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-06 17:37:15,507 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:37:15,508 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:37:15,508 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:37:15,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:37:15,513 INFO L85 PathProgramCache]: Analyzing trace with hash -594069783, now seen corresponding path program 1 times [2021-12-06 17:37:15,520 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:37:15,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336149080] [2021-12-06 17:37:15,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:37:15,521 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:37:15,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:37:15,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:37:15,631 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:37:15,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336149080] [2021-12-06 17:37:15,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336149080] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:37:15,632 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:37:15,632 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 17:37:15,633 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565556014] [2021-12-06 17:37:15,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:37:15,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-06 17:37:15,644 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:37:15,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-06 17:37:15,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 17:37:15,675 INFO L87 Difference]: Start difference. First operand has 14 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:37:15,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:37:15,688 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2021-12-06 17:37:15,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-06 17:37:15,690 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-12-06 17:37:15,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:37:15,698 INFO L225 Difference]: With dead ends: 25 [2021-12-06 17:37:15,698 INFO L226 Difference]: Without dead ends: 10 [2021-12-06 17:37:15,701 INFO L932 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 [2021-12-06 17:37:15,704 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:37:15,706 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:37:15,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2021-12-06 17:37:15,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2021-12-06 17:37:15,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:37:15,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2021-12-06 17:37:15,736 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 9 [2021-12-06 17:37:15,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:37:15,736 INFO L470 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2021-12-06 17:37:15,736 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:37:15,736 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2021-12-06 17:37:15,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-06 17:37:15,737 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:37:15,737 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:37:15,737 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 17:37:15,738 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:37:15,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:37:15,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1180937579, now seen corresponding path program 1 times [2021-12-06 17:37:15,739 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:37:15,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197883183] [2021-12-06 17:37:15,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:37:15,740 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:37:15,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 17:37:15,805 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 17:37:15,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 17:37:15,854 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 17:37:15,854 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-06 17:37:15,856 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-06 17:37:15,857 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 17:37:15,860 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-12-06 17:37:15,862 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-06 17:37:15,882 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.12 05:37:15 BoogieIcfgContainer [2021-12-06 17:37:15,882 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-06 17:37:15,883 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-06 17:37:15,883 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-06 17:37:15,883 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-06 17:37:15,884 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:37:15" (3/4) ... [2021-12-06 17:37:15,886 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-06 17:37:15,886 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-06 17:37:15,887 INFO L158 Benchmark]: Toolchain (without parser) took 938.28ms. Allocated memory was 75.5MB in the beginning and 119.5MB in the end (delta: 44.0MB). Free memory was 47.0MB in the beginning and 82.4MB in the end (delta: -35.5MB). Peak memory consumption was 7.3MB. Max. memory is 16.1GB. [2021-12-06 17:37:15,887 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 75.5MB. Free memory is still 47.8MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 17:37:15,888 INFO L158 Benchmark]: CACSL2BoogieTranslator took 193.68ms. Allocated memory was 75.5MB in the beginning and 119.5MB in the end (delta: 44.0MB). Free memory was 46.8MB in the beginning and 90.1MB in the end (delta: -43.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-12-06 17:37:15,888 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.16ms. Allocated memory is still 119.5MB. Free memory was 90.1MB in the beginning and 88.3MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 17:37:15,889 INFO L158 Benchmark]: Boogie Preprocessor took 25.31ms. Allocated memory is still 119.5MB. Free memory was 88.3MB in the beginning and 87.3MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 17:37:15,889 INFO L158 Benchmark]: RCFGBuilder took 231.47ms. Allocated memory is still 119.5MB. Free memory was 87.3MB in the beginning and 76.8MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-06 17:37:15,889 INFO L158 Benchmark]: TraceAbstraction took 442.76ms. Allocated memory is still 119.5MB. Free memory was 76.2MB in the beginning and 82.4MB in the end (delta: -6.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 17:37:15,890 INFO L158 Benchmark]: Witness Printer took 3.21ms. Allocated memory is still 119.5MB. Free memory is still 82.4MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 17:37:15,892 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 75.5MB. Free memory is still 47.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 193.68ms. Allocated memory was 75.5MB in the beginning and 119.5MB in the end (delta: 44.0MB). Free memory was 46.8MB in the beginning and 90.1MB in the end (delta: -43.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.16ms. Allocated memory is still 119.5MB. Free memory was 90.1MB in the beginning and 88.3MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 25.31ms. Allocated memory is still 119.5MB. Free memory was 88.3MB in the beginning and 87.3MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 231.47ms. Allocated memory is still 119.5MB. Free memory was 87.3MB in the beginning and 76.8MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 442.76ms. Allocated memory is still 119.5MB. Free memory was 76.2MB in the beginning and 82.4MB in the end (delta: -6.3MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 3.21ms. Allocated memory is still 119.5MB. Free memory is still 82.4MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 14]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseOr at line 38, overapproximation of someUnaryDOUBLEoperation at line 20, overapproximation of someBinaryArithmeticDOUBLEoperation at line 51, overapproximation of bitwiseAnd at line 37, overapproximation of someBinaryDOUBLEComparisonOperation at line 65. Possible FailurePath: [L17] double C0 = 1.414213538; [L18] double C1 = 0.229761391; [L19] double C2 = 1.296735525; [L20] double C3 = -0.901098370; [L21] double C4 = 0.493553400; [L22] double C5 = -0.118958666; VAL [C0=707106769/500000000, C1=229761391/1000000000, C2=51869421/40000000, C4=2467767/5000000] [L58] double x,y; [L60] x = __VERIFIER_nondet_double() [L61] CALL assume_abort_if_not(x >= 1. && x <= 1e10) [L12] COND FALSE !(!cond) VAL [\old(cond)=1, C0=707106769/500000000, C1=229761391/1000000000, C2=51869421/40000000, C4=2467767/5000000, cond=1] [L61] RET assume_abort_if_not(x >= 1. && x <= 1e10) [L63] CALL, EXPR sqrt_custom(x) [L31] union u x; [L32] double r; [L33] int exp; [L35] x.d = a [L37] EXPR x.i[0] [L37] exp = (x.i[0] & 0x7FF00000) >> 20 [L38] EXPR x.i[0] [L38] x.i[0] = (x.i[0] & 0x800FFFFF) | 0x3FF00000 [L39] EXPR x.d [L39] r = x.d * 0.5 [L41] r = C1+C2+(C3+(C4+C5*r)*r)*r VAL [\old(a)=4294967300, a=4294967300, C0=707106769/500000000, C1=229761391/1000000000, C2=51869421/40000000, C4=2467767/5000000, exp=6, x={4:0}] [L43] COND TRUE exp % 2 == 0 [L44] exp++ VAL [\old(a)=4294967300, a=4294967300, C0=707106769/500000000, C1=229761391/1000000000, C2=51869421/40000000, C4=2467767/5000000, exp=7, x={4:0}] [L50] x.i[0] = (exp/2 + 511) << 20 [L51] EXPR x.d [L51] r = r * x.d [L53] return r; [L53] return r; VAL [\old(a)=4294967300, \result=4294967297, a=4294967300, C0=707106769/500000000, C1=229761391/1000000000, C2=51869421/40000000, C4=2467767/5000000, exp=7, r=4294967297] [L63] RET, EXPR sqrt_custom(x) [L63] y = sqrt_custom(x) [L65] CALL __VERIFIER_assert(y >= 0. && y <= 1e6) [L14] COND TRUE !(cond) VAL [\old(cond)=0, C0=707106769/500000000, C1=229761391/1000000000, C2=51869421/40000000, C4=2467767/5000000, cond=0] [L14] reach_error() VAL [\old(cond)=0, C0=707106769/500000000, C1=229761391/1000000000, C2=51869421/40000000, C4=2467767/5000000, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 14 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 14 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, 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, InterpolantAutomatonStates: 2, 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, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 8 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 [2021-12-06 17:37:15,935 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e5e11a-26ed-488e-b3a2-398514f41040/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e5e11a-26ed-488e-b3a2-398514f41040/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e5e11a-26ed-488e-b3a2-398514f41040/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e5e11a-26ed-488e-b3a2-398514f41040/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e5e11a-26ed-488e-b3a2-398514f41040/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/sqrt_poly2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e5e11a-26ed-488e-b3a2-398514f41040/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e5e11a-26ed-488e-b3a2-398514f41040/bin/uautomizer-DrprNOufMa --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 14164d07a16e34a605f7e42a9694dd7b1f0302594742e37b160cf821b53bc94e --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 17:37:17,552 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 17:37:17,553 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 17:37:17,581 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 17:37:17,582 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 17:37:17,583 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 17:37:17,585 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 17:37:17,587 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 17:37:17,589 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 17:37:17,590 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 17:37:17,591 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 17:37:17,592 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 17:37:17,593 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 17:37:17,594 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 17:37:17,596 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 17:37:17,597 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 17:37:17,599 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 17:37:17,600 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 17:37:17,602 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 17:37:17,604 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 17:37:17,606 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 17:37:17,607 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 17:37:17,609 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 17:37:17,610 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 17:37:17,613 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 17:37:17,614 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 17:37:17,614 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 17:37:17,615 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 17:37:17,616 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 17:37:17,617 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 17:37:17,617 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 17:37:17,618 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 17:37:17,619 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 17:37:17,619 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 17:37:17,620 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 17:37:17,621 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 17:37:17,621 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 17:37:17,621 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 17:37:17,622 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 17:37:17,622 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 17:37:17,623 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 17:37:17,624 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e5e11a-26ed-488e-b3a2-398514f41040/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-06 17:37:17,649 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 17:37:17,649 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 17:37:17,649 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 17:37:17,650 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 17:37:17,650 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 17:37:17,650 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 17:37:17,651 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 17:37:17,651 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 17:37:17,652 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 17:37:17,652 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 17:37:17,652 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 17:37:17,652 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 17:37:17,652 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 17:37:17,653 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 17:37:17,653 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 17:37:17,653 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 17:37:17,653 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-06 17:37:17,653 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-06 17:37:17,653 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-06 17:37:17,654 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 17:37:17,654 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 17:37:17,654 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 17:37:17,654 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 17:37:17,654 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 17:37:17,655 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 17:37:17,655 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 17:37:17,655 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 17:37:17,655 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 17:37:17,655 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 17:37:17,655 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 17:37:17,655 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-06 17:37:17,655 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-06 17:37:17,656 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 17:37:17,656 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 17:37:17,656 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 17:37:17,656 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 17:37:17,656 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-06 17:37:17,656 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_worker_vcloud-master_on_vcloud-master/run_dir_08e5e11a-26ed-488e-b3a2-398514f41040/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e5e11a-26ed-488e-b3a2-398514f41040/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 14164d07a16e34a605f7e42a9694dd7b1f0302594742e37b160cf821b53bc94e [2021-12-06 17:37:17,878 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 17:37:17,893 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 17:37:17,894 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 17:37:17,895 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 17:37:17,896 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 17:37:17,897 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e5e11a-26ed-488e-b3a2-398514f41040/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/float-benchs/sqrt_poly2.c [2021-12-06 17:37:17,938 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e5e11a-26ed-488e-b3a2-398514f41040/bin/uautomizer-DrprNOufMa/data/e19bf0cb6/3dabc52fa6424144a1596cb84d28a087/FLAGe86680592 [2021-12-06 17:37:18,332 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 17:37:18,332 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e5e11a-26ed-488e-b3a2-398514f41040/sv-benchmarks/c/float-benchs/sqrt_poly2.c [2021-12-06 17:37:18,339 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e5e11a-26ed-488e-b3a2-398514f41040/bin/uautomizer-DrprNOufMa/data/e19bf0cb6/3dabc52fa6424144a1596cb84d28a087/FLAGe86680592 [2021-12-06 17:37:18,349 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e5e11a-26ed-488e-b3a2-398514f41040/bin/uautomizer-DrprNOufMa/data/e19bf0cb6/3dabc52fa6424144a1596cb84d28a087 [2021-12-06 17:37:18,351 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 17:37:18,352 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 17:37:18,353 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 17:37:18,353 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 17:37:18,356 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 17:37:18,357 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 05:37:18" (1/1) ... [2021-12-06 17:37:18,357 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59d1232e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:37:18, skipping insertion in model container [2021-12-06 17:37:18,358 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 05:37:18" (1/1) ... [2021-12-06 17:37:18,363 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 17:37:18,375 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 17:37:18,476 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e5e11a-26ed-488e-b3a2-398514f41040/sv-benchmarks/c/float-benchs/sqrt_poly2.c[587,600] [2021-12-06 17:37:18,491 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 17:37:18,505 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 17:37:18,521 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e5e11a-26ed-488e-b3a2-398514f41040/sv-benchmarks/c/float-benchs/sqrt_poly2.c[587,600] [2021-12-06 17:37:18,533 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 17:37:18,550 INFO L208 MainTranslator]: Completed translation [2021-12-06 17:37:18,551 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:37:18 WrapperNode [2021-12-06 17:37:18,551 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 17:37:18,552 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 17:37:18,552 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 17:37:18,552 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 17:37:18,559 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:37:18" (1/1) ... [2021-12-06 17:37:18,570 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:37:18" (1/1) ... [2021-12-06 17:37:18,591 INFO L137 Inliner]: procedures = 21, calls = 20, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 67 [2021-12-06 17:37:18,591 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 17:37:18,592 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 17:37:18,592 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 17:37:18,592 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 17:37:18,600 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:37:18" (1/1) ... [2021-12-06 17:37:18,600 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:37:18" (1/1) ... [2021-12-06 17:37:18,603 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:37:18" (1/1) ... [2021-12-06 17:37:18,604 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:37:18" (1/1) ... [2021-12-06 17:37:18,610 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:37:18" (1/1) ... [2021-12-06 17:37:18,611 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:37:18" (1/1) ... [2021-12-06 17:37:18,613 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:37:18" (1/1) ... [2021-12-06 17:37:18,615 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 17:37:18,616 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 17:37:18,616 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 17:37:18,616 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 17:37:18,617 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:37:18" (1/1) ... [2021-12-06 17:37:18,622 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 17:37:18,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e5e11a-26ed-488e-b3a2-398514f41040/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:37:18,643 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e5e11a-26ed-488e-b3a2-398514f41040/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 17:37:18,645 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e5e11a-26ed-488e-b3a2-398514f41040/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 17:37:18,677 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 17:37:18,678 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2021-12-06 17:37:18,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2021-12-06 17:37:18,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-06 17:37:18,678 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-06 17:37:18,678 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-12-06 17:37:18,678 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 17:37:18,678 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 17:37:18,678 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-06 17:37:18,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-12-06 17:37:18,732 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 17:37:18,733 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 17:37:21,261 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 17:37:21,267 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 17:37:21,267 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-06 17:37:21,268 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:37:21 BoogieIcfgContainer [2021-12-06 17:37:21,268 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 17:37:21,270 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 17:37:21,270 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 17:37:21,273 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 17:37:21,273 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 05:37:18" (1/3) ... [2021-12-06 17:37:21,273 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d5c3383 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 05:37:21, skipping insertion in model container [2021-12-06 17:37:21,274 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:37:18" (2/3) ... [2021-12-06 17:37:21,274 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d5c3383 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 05:37:21, skipping insertion in model container [2021-12-06 17:37:21,274 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:37:21" (3/3) ... [2021-12-06 17:37:21,275 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt_poly2.c [2021-12-06 17:37:21,280 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 17:37:21,280 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 17:37:21,319 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 17:37:21,324 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-06 17:37:21,324 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 17:37:21,335 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:37:21,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-06 17:37:21,339 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:37:21,339 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:37:21,339 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:37:21,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:37:21,344 INFO L85 PathProgramCache]: Analyzing trace with hash -594069783, now seen corresponding path program 1 times [2021-12-06 17:37:21,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 17:37:21,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [448225796] [2021-12-06 17:37:21,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:37:21,355 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 17:37:21,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e5e11a-26ed-488e-b3a2-398514f41040/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 17:37:21,356 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e5e11a-26ed-488e-b3a2-398514f41040/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 17:37:21,357 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e5e11a-26ed-488e-b3a2-398514f41040/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-06 17:37:22,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:37:22,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-06 17:37:22,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:37:22,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:37:22,564 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:37:22,564 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 17:37:22,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [448225796] [2021-12-06 17:37:22,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [448225796] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:37:22,565 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:37:22,565 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 17:37:22,567 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009418031] [2021-12-06 17:37:22,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:37:22,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-06 17:37:22,570 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 17:37:22,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-06 17:37:22,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 17:37:22,591 INFO L87 Difference]: Start difference. First operand has 14 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:37:22,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:37:22,600 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2021-12-06 17:37:22,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-06 17:37:22,601 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-12-06 17:37:22,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:37:22,606 INFO L225 Difference]: With dead ends: 25 [2021-12-06 17:37:22,607 INFO L226 Difference]: Without dead ends: 10 [2021-12-06 17:37:22,608 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 17:37:22,611 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:37:22,612 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:37:22,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2021-12-06 17:37:22,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2021-12-06 17:37:22,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:37:22,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2021-12-06 17:37:22,633 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 9 [2021-12-06 17:37:22,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:37:22,633 INFO L470 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2021-12-06 17:37:22,633 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:37:22,633 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2021-12-06 17:37:22,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-06 17:37:22,633 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:37:22,634 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:37:22,658 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e5e11a-26ed-488e-b3a2-398514f41040/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-06 17:37:22,834 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e5e11a-26ed-488e-b3a2-398514f41040/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 17:37:22,835 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:37:22,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:37:22,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1180937579, now seen corresponding path program 1 times [2021-12-06 17:37:22,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 17:37:22,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [850963034] [2021-12-06 17:37:22,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:37:22,837 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 17:37:22,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e5e11a-26ed-488e-b3a2-398514f41040/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 17:37:22,838 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e5e11a-26ed-488e-b3a2-398514f41040/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 17:37:22,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e5e11a-26ed-488e-b3a2-398514f41040/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-06 17:37:24,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 17:37:24,084 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 17:37:25,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 17:37:25,373 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-12-06 17:37:25,373 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-06 17:37:25,374 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-06 17:37:25,412 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e5e11a-26ed-488e-b3a2-398514f41040/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-12-06 17:37:25,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e5e11a-26ed-488e-b3a2-398514f41040/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 17:37:25,587 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-12-06 17:37:25,604 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-06 17:37:25,645 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.12 05:37:25 BoogieIcfgContainer [2021-12-06 17:37:25,645 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-06 17:37:25,645 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-06 17:37:25,645 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-06 17:37:25,645 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-06 17:37:25,646 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:37:21" (3/4) ... [2021-12-06 17:37:25,647 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-12-06 17:37:25,681 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e5e11a-26ed-488e-b3a2-398514f41040/bin/uautomizer-DrprNOufMa/witness.graphml [2021-12-06 17:37:25,681 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-06 17:37:25,681 INFO L158 Benchmark]: Toolchain (without parser) took 7329.15ms. Allocated memory was 60.8MB in the beginning and 73.4MB in the end (delta: 12.6MB). Free memory was 40.5MB in the beginning and 51.3MB in the end (delta: -10.8MB). Peak memory consumption was 1.2MB. Max. memory is 16.1GB. [2021-12-06 17:37:25,682 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 60.8MB. Free memory was 42.0MB in the beginning and 41.9MB in the end (delta: 84.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 17:37:25,682 INFO L158 Benchmark]: CACSL2BoogieTranslator took 198.32ms. Allocated memory is still 60.8MB. Free memory was 40.2MB in the beginning and 42.7MB in the end (delta: -2.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-12-06 17:37:25,682 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.41ms. Allocated memory is still 60.8MB. Free memory was 42.7MB in the beginning and 40.8MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 17:37:25,683 INFO L158 Benchmark]: Boogie Preprocessor took 23.21ms. Allocated memory is still 60.8MB. Free memory was 40.8MB in the beginning and 39.5MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 17:37:25,683 INFO L158 Benchmark]: RCFGBuilder took 2652.62ms. Allocated memory is still 60.8MB. Free memory was 39.5MB in the beginning and 28.7MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-06 17:37:25,684 INFO L158 Benchmark]: TraceAbstraction took 4374.90ms. Allocated memory was 60.8MB in the beginning and 73.4MB in the end (delta: 12.6MB). Free memory was 28.2MB in the beginning and 53.8MB in the end (delta: -25.6MB). Peak memory consumption was 10.7MB. Max. memory is 16.1GB. [2021-12-06 17:37:25,684 INFO L158 Benchmark]: Witness Printer took 35.68ms. Allocated memory is still 73.4MB. Free memory was 53.8MB in the beginning and 51.3MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 17:37:25,686 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 60.8MB. Free memory was 42.0MB in the beginning and 41.9MB in the end (delta: 84.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 198.32ms. Allocated memory is still 60.8MB. Free memory was 40.2MB in the beginning and 42.7MB in the end (delta: -2.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.41ms. Allocated memory is still 60.8MB. Free memory was 42.7MB in the beginning and 40.8MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 23.21ms. Allocated memory is still 60.8MB. Free memory was 40.8MB in the beginning and 39.5MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 2652.62ms. Allocated memory is still 60.8MB. Free memory was 39.5MB in the beginning and 28.7MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 4374.90ms. Allocated memory was 60.8MB in the beginning and 73.4MB in the end (delta: 12.6MB). Free memory was 28.2MB in the beginning and 53.8MB in the end (delta: -25.6MB). Peak memory consumption was 10.7MB. Max. memory is 16.1GB. * Witness Printer took 35.68ms. Allocated memory is still 73.4MB. Free memory was 53.8MB in the beginning and 51.3MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 14]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L17] double C0 = 1.414213538; [L18] double C1 = 0.229761391; [L19] double C2 = 1.296735525; [L20] double C3 = -0.901098370; [L21] double C4 = 0.493553400; [L22] double C5 = -0.118958666; VAL [C0=1.414213538, C1=0.229761391, C2=1.296735525, C3=-0.90109837, C4=0.4935534, C5=-0.118958666] [L58] double x,y; [L60] x = __VERIFIER_nondet_double() [L61] CALL assume_abort_if_not(x >= 1. && x <= 1e10) [L12] COND FALSE !(!cond) VAL [\old(cond)=1, C0=1.414213538, C1=0.229761391, C2=1.296735525, C3=-0.90109837, C4=0.4935534, C5=-0.118958666, cond=1] [L61] RET assume_abort_if_not(x >= 1. && x <= 1e10) [L63] CALL, EXPR sqrt_custom(x) [L31] union u x; [L32] double r; [L33] int exp; [L35] x.d = a [L37] EXPR x.i[0] [L37] exp = (x.i[0] & 0x7FF00000) >> 20 [L38] EXPR x.i[0] [L38] x.i[0] = (x.i[0] & 0x800FFFFF) | 0x3FF00000 [L39] EXPR x.d [L39] r = x.d * 0.5 [L41] r = C1+C2+(C3+(C4+C5*r)*r)*r VAL [\old(a)=8589934592, a=8589934592, C0=1.414213538, C1=0.229761391, C2=1.296735525, C3=-0.90109837, C4=0.4935534, C5=-0.118958666, exp=0, r=-9424883247839044000000000000, x={7:0}] [L43] COND TRUE exp % 2 == 0 [L44] exp++ VAL [\old(a)=8589934592, a=8589934592, C0=1.414213538, C1=0.229761391, C2=1.296735525, C3=-0.90109837, C4=0.4935534, C5=-0.118958666, exp=1, r=-9424883247839044000000000000, x={7:0}] [L50] x.i[0] = (exp/2 + 511) << 20 [L51] EXPR x.d [L51] r = r * x.d [L53] return r; [L53] return r; VAL [\old(a)=8589934592, \result=-80959140268404600000000000000000000000, a=8589934592, C0=1.414213538, C1=0.229761391, C2=1.296735525, C3=-0.90109837, C4=0.4935534, C5=-0.118958666, exp=1, r=-80959140268404600000000000000000000000] [L63] RET, EXPR sqrt_custom(x) [L63] y = sqrt_custom(x) [L65] CALL __VERIFIER_assert(y >= 0. && y <= 1e6) [L14] COND TRUE !(cond) VAL [\old(cond)=0, C0=1.414213538, C1=0.229761391, C2=1.296735525, C3=-0.90109837, C4=0.4935534, C5=-0.118958666, cond=0] [L14] reach_error() VAL [\old(cond)=0, C0=1.414213538, C1=0.229761391, C2=1.296735525, C3=-0.90109837, C4=0.4935534, C5=-0.118958666, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4.3s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 14 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 14 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=0, InterpolantAutomatonStates: 2, 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, 2.3s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 8 SizeOfPredicates, 0 NumberOfNonLiveVariables, 58 ConjunctsInSsa, 1 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 proved your program to be incorrect! [2021-12-06 17:37:25,765 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e5e11a-26ed-488e-b3a2-398514f41040/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE