./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 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28cb7c0b-1db8-4746-88ef-ff46be110385/bin/uautomizer-hJ6jxDFKc3/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28cb7c0b-1db8-4746-88ef-ff46be110385/bin/uautomizer-hJ6jxDFKc3/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28cb7c0b-1db8-4746-88ef-ff46be110385/bin/uautomizer-hJ6jxDFKc3/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28cb7c0b-1db8-4746-88ef-ff46be110385/bin/uautomizer-hJ6jxDFKc3/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/sqrt_poly2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28cb7c0b-1db8-4746-88ef-ff46be110385/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28cb7c0b-1db8-4746-88ef-ff46be110385/bin/uautomizer-hJ6jxDFKc3 --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 1d97d268d682e2021ff98bdbb1deaf100696d038 ................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28cb7c0b-1db8-4746-88ef-ff46be110385/bin/uautomizer-hJ6jxDFKc3/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28cb7c0b-1db8-4746-88ef-ff46be110385/bin/uautomizer-hJ6jxDFKc3/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28cb7c0b-1db8-4746-88ef-ff46be110385/bin/uautomizer-hJ6jxDFKc3/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28cb7c0b-1db8-4746-88ef-ff46be110385/bin/uautomizer-hJ6jxDFKc3/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/sqrt_poly2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28cb7c0b-1db8-4746-88ef-ff46be110385/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28cb7c0b-1db8-4746-88ef-ff46be110385/bin/uautomizer-hJ6jxDFKc3 --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 1d97d268d682e2021ff98bdbb1deaf100696d038 ......................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-15 20:07:45,419 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-15 20:07:45,423 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-15 20:07:45,500 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-15 20:07:45,502 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-15 20:07:45,509 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-15 20:07:45,511 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-15 20:07:45,516 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-15 20:07:45,521 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-15 20:07:45,530 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-15 20:07:45,531 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-15 20:07:45,533 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-15 20:07:45,533 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-15 20:07:45,535 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-15 20:07:45,537 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-15 20:07:45,539 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-15 20:07:45,540 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-15 20:07:45,542 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-15 20:07:45,545 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-15 20:07:45,549 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-15 20:07:45,556 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-15 20:07:45,560 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-15 20:07:45,563 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-15 20:07:45,564 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-15 20:07:45,569 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-15 20:07:45,570 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-15 20:07:45,571 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-15 20:07:45,572 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-15 20:07:45,573 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-15 20:07:45,575 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-15 20:07:45,575 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-15 20:07:45,577 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-15 20:07:45,578 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-15 20:07:45,580 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-15 20:07:45,582 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-15 20:07:45,582 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-15 20:07:45,584 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-15 20:07:45,584 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-15 20:07:45,585 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-15 20:07:45,586 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-15 20:07:45,588 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-15 20:07:45,589 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28cb7c0b-1db8-4746-88ef-ff46be110385/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-15 20:07:45,656 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-15 20:07:45,656 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-15 20:07:45,657 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-15 20:07:45,657 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-15 20:07:45,667 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-15 20:07:45,668 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-15 20:07:45,669 INFO L138 SettingsManager]: * Use SBE=true [2021-10-15 20:07:45,669 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-15 20:07:45,669 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-15 20:07:45,670 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-15 20:07:45,671 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-15 20:07:45,672 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-15 20:07:45,672 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-15 20:07:45,672 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-15 20:07:45,673 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-15 20:07:45,673 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-15 20:07:45,673 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-15 20:07:45,674 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-15 20:07:45,674 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-15 20:07:45,674 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-15 20:07:45,675 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-15 20:07:45,675 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-15 20:07:45,675 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 20:07:45,676 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-15 20:07:45,676 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-15 20:07:45,676 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-15 20:07:45,677 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-15 20:07:45,677 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-15 20:07:45,677 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-15 20:07:45,680 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-15 20:07:45,681 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-15 20:07:45,681 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-15 20:07:45,681 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_28cb7c0b-1db8-4746-88ef-ff46be110385/bin/uautomizer-hJ6jxDFKc3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28cb7c0b-1db8-4746-88ef-ff46be110385/bin/uautomizer-hJ6jxDFKc3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1d97d268d682e2021ff98bdbb1deaf100696d038 [2021-10-15 20:07:46,013 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-15 20:07:46,050 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-15 20:07:46,053 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-15 20:07:46,055 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-15 20:07:46,056 INFO L275 PluginConnector]: CDTParser initialized [2021-10-15 20:07:46,057 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28cb7c0b-1db8-4746-88ef-ff46be110385/bin/uautomizer-hJ6jxDFKc3/../../sv-benchmarks/c/float-benchs/sqrt_poly2.c [2021-10-15 20:07:46,171 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28cb7c0b-1db8-4746-88ef-ff46be110385/bin/uautomizer-hJ6jxDFKc3/data/d7407d945/6b12f12fe5f24b109c625df9195594d2/FLAGae4426715 [2021-10-15 20:07:46,766 INFO L306 CDTParser]: Found 1 translation units. [2021-10-15 20:07:46,769 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28cb7c0b-1db8-4746-88ef-ff46be110385/sv-benchmarks/c/float-benchs/sqrt_poly2.c [2021-10-15 20:07:46,785 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28cb7c0b-1db8-4746-88ef-ff46be110385/bin/uautomizer-hJ6jxDFKc3/data/d7407d945/6b12f12fe5f24b109c625df9195594d2/FLAGae4426715 [2021-10-15 20:07:47,081 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28cb7c0b-1db8-4746-88ef-ff46be110385/bin/uautomizer-hJ6jxDFKc3/data/d7407d945/6b12f12fe5f24b109c625df9195594d2 [2021-10-15 20:07:47,084 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-15 20:07:47,086 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-15 20:07:47,088 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-15 20:07:47,088 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-15 20:07:47,093 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-15 20:07:47,094 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 08:07:47" (1/1) ... [2021-10-15 20:07:47,096 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bcf78da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:07:47, skipping insertion in model container [2021-10-15 20:07:47,096 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 08:07:47" (1/1) ... [2021-10-15 20:07:47,105 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-15 20:07:47,125 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-15 20:07:47,332 WARN L228 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_28cb7c0b-1db8-4746-88ef-ff46be110385/sv-benchmarks/c/float-benchs/sqrt_poly2.c[587,600] [2021-10-15 20:07:47,360 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 20:07:47,370 INFO L203 MainTranslator]: Completed pre-run [2021-10-15 20:07:47,386 WARN L228 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_28cb7c0b-1db8-4746-88ef-ff46be110385/sv-benchmarks/c/float-benchs/sqrt_poly2.c[587,600] [2021-10-15 20:07:47,401 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 20:07:47,419 INFO L208 MainTranslator]: Completed translation [2021-10-15 20:07:47,420 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:07:47 WrapperNode [2021-10-15 20:07:47,420 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-15 20:07:47,421 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-15 20:07:47,422 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-15 20:07:47,422 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-15 20:07:47,432 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:07:47" (1/1) ... [2021-10-15 20:07:47,442 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:07:47" (1/1) ... [2021-10-15 20:07:47,469 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-15 20:07:47,470 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-15 20:07:47,470 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-15 20:07:47,471 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-15 20:07:47,482 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:07:47" (1/1) ... [2021-10-15 20:07:47,483 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:07:47" (1/1) ... [2021-10-15 20:07:47,486 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:07:47" (1/1) ... [2021-10-15 20:07:47,486 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:07:47" (1/1) ... [2021-10-15 20:07:47,496 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:07:47" (1/1) ... [2021-10-15 20:07:47,499 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:07:47" (1/1) ... [2021-10-15 20:07:47,501 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:07:47" (1/1) ... [2021-10-15 20:07:47,504 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-15 20:07:47,505 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-15 20:07:47,505 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-15 20:07:47,505 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-15 20:07:47,507 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:07:47" (1/1) ... [2021-10-15 20:07:47,517 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 20:07:47,531 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28cb7c0b-1db8-4746-88ef-ff46be110385/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:07:47,550 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28cb7c0b-1db8-4746-88ef-ff46be110385/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-15 20:07:47,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28cb7c0b-1db8-4746-88ef-ff46be110385/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-15 20:07:47,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-15 20:07:47,604 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-15 20:07:47,604 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-10-15 20:07:47,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-15 20:07:47,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-10-15 20:07:47,605 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-15 20:07:47,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-15 20:07:47,605 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-15 20:07:47,606 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-15 20:07:47,881 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-15 20:07:47,882 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-15 20:07:47,884 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:07:47 BoogieIcfgContainer [2021-10-15 20:07:47,884 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-15 20:07:47,887 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-15 20:07:47,887 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-15 20:07:47,907 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-15 20:07:47,908 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 08:07:47" (1/3) ... [2021-10-15 20:07:47,909 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a334b5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 08:07:47, skipping insertion in model container [2021-10-15 20:07:47,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:07:47" (2/3) ... [2021-10-15 20:07:47,910 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a334b5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 08:07:47, skipping insertion in model container [2021-10-15 20:07:47,910 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:07:47" (3/3) ... [2021-10-15 20:07:47,912 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt_poly2.c [2021-10-15 20:07:47,918 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-15 20:07:47,919 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-15 20:07:48,067 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-15 20:07:48,076 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, mConcurrency=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 [2021-10-15 20:07:48,076 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-15 20:07:48,105 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 14 places, 16 transitions, 32 flow [2021-10-15 20:07:48,162 INFO L129 PetriNetUnfolder]: 3/16 cut-off events. [2021-10-15 20:07:48,162 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 20:07:48,164 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17 conditions, 16 events. 3/16 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 6 event pairs, 0 based on Foata normal form. 0/12 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-10-15 20:07:48,165 INFO L82 GeneralOperation]: Start removeDead. Operand has 14 places, 16 transitions, 32 flow [2021-10-15 20:07:48,174 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 10 places, 11 transitions, 22 flow [2021-10-15 20:07:48,182 INFO L129 PetriNetUnfolder]: 2/10 cut-off events. [2021-10-15 20:07:48,184 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 20:07:48,185 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:07:48,186 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:07:48,186 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 20:07:48,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:07:48,195 INFO L82 PathProgramCache]: Analyzing trace with hash 1182784621, now seen corresponding path program 1 times [2021-10-15 20:07:48,218 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:07:48,220 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574824977] [2021-10-15 20:07:48,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:07:48,222 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:07:48,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 20:07:48,416 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-15 20:07:48,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 20:07:48,577 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-15 20:07:48,586 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-15 20:07:48,588 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 20:07:48,592 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-15 20:07:48,601 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-15 20:07:48,662 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 08:07:48 BoogieIcfgContainer [2021-10-15 20:07:48,663 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-15 20:07:48,664 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-15 20:07:48,664 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-15 20:07:48,664 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-15 20:07:48,667 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:07:47" (3/4) ... [2021-10-15 20:07:48,671 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-15 20:07:48,671 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-15 20:07:48,677 INFO L168 Benchmark]: Toolchain (without parser) took 1587.55 ms. Allocated memory is still 96.5 MB. Free memory was 59.9 MB in the beginning and 38.7 MB in the end (delta: 21.2 MB). Peak memory consumption was 18.5 MB. Max. memory is 16.1 GB. [2021-10-15 20:07:48,678 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 96.5 MB. Free memory is still 76.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 20:07:48,679 INFO L168 Benchmark]: CACSL2BoogieTranslator took 332.40 ms. Allocated memory is still 96.5 MB. Free memory was 59.7 MB in the beginning and 71.6 MB in the end (delta: -11.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-15 20:07:48,681 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.88 ms. Allocated memory is still 96.5 MB. Free memory was 71.6 MB in the beginning and 69.8 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 20:07:48,684 INFO L168 Benchmark]: Boogie Preprocessor took 33.90 ms. Allocated memory is still 96.5 MB. Free memory was 69.8 MB in the beginning and 68.7 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 20:07:48,685 INFO L168 Benchmark]: RCFGBuilder took 379.54 ms. Allocated memory is still 96.5 MB. Free memory was 68.7 MB in the beginning and 57.6 MB in the end (delta: 11.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-15 20:07:48,687 INFO L168 Benchmark]: TraceAbstraction took 776.49 ms. Allocated memory is still 96.5 MB. Free memory was 57.2 MB in the beginning and 39.3 MB in the end (delta: 17.9 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-10-15 20:07:48,695 INFO L168 Benchmark]: Witness Printer took 8.46 ms. Allocated memory is still 96.5 MB. Free memory was 39.0 MB in the beginning and 38.7 MB in the end (delta: 280.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 20:07:48,725 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 96.5 MB. Free memory is still 76.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 332.40 ms. Allocated memory is still 96.5 MB. Free memory was 59.7 MB in the beginning and 71.6 MB in the end (delta: -11.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 47.88 ms. Allocated memory is still 96.5 MB. Free memory was 71.6 MB in the beginning and 69.8 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 33.90 ms. Allocated memory is still 96.5 MB. Free memory was 69.8 MB in the beginning and 68.7 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 379.54 ms. Allocated memory is still 96.5 MB. Free memory was 68.7 MB in the beginning and 57.6 MB in the end (delta: 11.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 776.49 ms. Allocated memory is still 96.5 MB. Free memory was 57.2 MB in the beginning and 39.3 MB in the end (delta: 17.9 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * Witness Printer took 8.46 ms. Allocated memory is still 96.5 MB. Free memory was 39.0 MB in the beginning and 38.7 MB in the end (delta: 280.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms 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() [L12] COND FALSE !(!cond) VAL [C0=707106769/500000000, C1=229761391/1000000000, C2=51869421/40000000, C4=2467767/5000000] [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 [C0=707106769/500000000, C1=229761391/1000000000, C2=51869421/40000000, C4=2467767/5000000] [L43] COND FALSE !(exp % 2 == 0) [L47] r = r * C0 VAL [C0=707106769/500000000, C1=229761391/1000000000, C2=51869421/40000000, C4=2467767/5000000] [L50] x.i[0] = (exp/2 + 511) << 20 [L51] EXPR x.d [L51] r = r * x.d [L53] return r; [L53] return r; VAL [C0=707106769/500000000, C1=229761391/1000000000, C2=51869421/40000000, C4=2467767/5000000] [L63] y = sqrt_custom(x) [L14] COND TRUE !(cond) VAL [C0=707106769/500000000, C1=229761391/1000000000, C2=51869421/40000000, C4=2467767/5000000] [L14] reach_error() VAL [C0=707106769/500000000, C1=229761391/1000000000, C2=51869421/40000000, C4=2467767/5000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 10.3ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 549.7ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 97.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 12.7ms SsaConstructionTime, 105.9ms SatisfiabilityAnalysisTime, 0.0ms InterpolantComputationTime, 9 NumberOfCodeBlocks, 9 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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 [2021-10-15 20:07:48,794 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28cb7c0b-1db8-4746-88ef-ff46be110385/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-5709675 [2021-10-15 20:07:51,839 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-15 20:07:51,843 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-15 20:07:51,910 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-15 20:07:51,911 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-15 20:07:51,917 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-15 20:07:51,919 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-15 20:07:51,928 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-15 20:07:51,932 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-15 20:07:51,942 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-15 20:07:51,944 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-15 20:07:51,947 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-15 20:07:51,948 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-15 20:07:51,952 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-15 20:07:51,955 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-15 20:07:51,956 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-15 20:07:51,958 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-15 20:07:51,959 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-15 20:07:51,962 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-15 20:07:51,965 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-15 20:07:51,968 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-15 20:07:51,970 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-15 20:07:51,972 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-15 20:07:51,973 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-15 20:07:51,978 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-15 20:07:51,978 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-15 20:07:51,979 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-15 20:07:51,980 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-15 20:07:51,981 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-15 20:07:51,983 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-15 20:07:51,983 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-15 20:07:51,985 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-15 20:07:51,986 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-15 20:07:51,987 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-15 20:07:51,989 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-15 20:07:51,989 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-15 20:07:51,990 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-15 20:07:51,991 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-15 20:07:51,992 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-15 20:07:51,993 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-15 20:07:51,994 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-15 20:07:51,996 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28cb7c0b-1db8-4746-88ef-ff46be110385/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-10-15 20:07:52,045 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-15 20:07:52,046 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-15 20:07:52,047 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-15 20:07:52,047 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-15 20:07:52,050 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-15 20:07:52,050 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-15 20:07:52,051 INFO L138 SettingsManager]: * Use SBE=true [2021-10-15 20:07:52,051 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-15 20:07:52,051 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-15 20:07:52,051 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-15 20:07:52,053 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-15 20:07:52,053 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-15 20:07:52,053 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-15 20:07:52,054 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-15 20:07:52,054 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-15 20:07:52,054 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-15 20:07:52,055 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-15 20:07:52,055 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-15 20:07:52,055 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-15 20:07:52,055 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-15 20:07:52,056 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-15 20:07:52,056 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-15 20:07:52,056 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-15 20:07:52,057 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 20:07:52,057 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-15 20:07:52,057 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-15 20:07:52,058 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-15 20:07:52,058 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-15 20:07:52,058 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-15 20:07:52,059 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-15 20:07:52,059 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-15 20:07:52,059 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-15 20:07:52,060 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-15 20:07:52,060 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-15 20:07:52,060 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_28cb7c0b-1db8-4746-88ef-ff46be110385/bin/uautomizer-hJ6jxDFKc3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28cb7c0b-1db8-4746-88ef-ff46be110385/bin/uautomizer-hJ6jxDFKc3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1d97d268d682e2021ff98bdbb1deaf100696d038 [2021-10-15 20:07:52,600 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-15 20:07:52,632 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-15 20:07:52,636 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-15 20:07:52,638 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-15 20:07:52,639 INFO L275 PluginConnector]: CDTParser initialized [2021-10-15 20:07:52,640 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28cb7c0b-1db8-4746-88ef-ff46be110385/bin/uautomizer-hJ6jxDFKc3/../../sv-benchmarks/c/float-benchs/sqrt_poly2.c [2021-10-15 20:07:52,725 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28cb7c0b-1db8-4746-88ef-ff46be110385/bin/uautomizer-hJ6jxDFKc3/data/5590fea8f/278de18114a44416b4b99ee2a483dd52/FLAG23101278d [2021-10-15 20:07:53,411 INFO L306 CDTParser]: Found 1 translation units. [2021-10-15 20:07:53,411 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28cb7c0b-1db8-4746-88ef-ff46be110385/sv-benchmarks/c/float-benchs/sqrt_poly2.c [2021-10-15 20:07:53,425 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28cb7c0b-1db8-4746-88ef-ff46be110385/bin/uautomizer-hJ6jxDFKc3/data/5590fea8f/278de18114a44416b4b99ee2a483dd52/FLAG23101278d [2021-10-15 20:07:53,737 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28cb7c0b-1db8-4746-88ef-ff46be110385/bin/uautomizer-hJ6jxDFKc3/data/5590fea8f/278de18114a44416b4b99ee2a483dd52 [2021-10-15 20:07:53,740 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-15 20:07:53,742 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-15 20:07:53,745 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-15 20:07:53,745 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-15 20:07:53,750 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-15 20:07:53,751 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 08:07:53" (1/1) ... [2021-10-15 20:07:53,753 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73674520 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:07:53, skipping insertion in model container [2021-10-15 20:07:53,753 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 08:07:53" (1/1) ... [2021-10-15 20:07:53,763 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-15 20:07:53,783 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-15 20:07:53,972 WARN L228 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_28cb7c0b-1db8-4746-88ef-ff46be110385/sv-benchmarks/c/float-benchs/sqrt_poly2.c[587,600] [2021-10-15 20:07:54,001 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 20:07:54,041 INFO L203 MainTranslator]: Completed pre-run [2021-10-15 20:07:54,079 WARN L228 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_28cb7c0b-1db8-4746-88ef-ff46be110385/sv-benchmarks/c/float-benchs/sqrt_poly2.c[587,600] [2021-10-15 20:07:54,108 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 20:07:54,150 INFO L208 MainTranslator]: Completed translation [2021-10-15 20:07:54,150 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:07:54 WrapperNode [2021-10-15 20:07:54,151 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-15 20:07:54,153 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-15 20:07:54,153 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-15 20:07:54,153 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-15 20:07:54,161 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:07:54" (1/1) ... [2021-10-15 20:07:54,174 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:07:54" (1/1) ... [2021-10-15 20:07:54,201 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-15 20:07:54,202 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-15 20:07:54,202 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-15 20:07:54,203 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-15 20:07:54,213 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:07:54" (1/1) ... [2021-10-15 20:07:54,214 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:07:54" (1/1) ... [2021-10-15 20:07:54,220 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:07:54" (1/1) ... [2021-10-15 20:07:54,220 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:07:54" (1/1) ... [2021-10-15 20:07:54,232 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:07:54" (1/1) ... [2021-10-15 20:07:54,235 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:07:54" (1/1) ... [2021-10-15 20:07:54,238 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:07:54" (1/1) ... [2021-10-15 20:07:54,256 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-15 20:07:54,257 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-15 20:07:54,257 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-15 20:07:54,257 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-15 20:07:54,258 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:07:54" (1/1) ... [2021-10-15 20:07:54,273 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 20:07:54,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28cb7c0b-1db8-4746-88ef-ff46be110385/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:07:54,307 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28cb7c0b-1db8-4746-88ef-ff46be110385/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-15 20:07:54,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28cb7c0b-1db8-4746-88ef-ff46be110385/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-15 20:07:54,369 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2021-10-15 20:07:54,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2021-10-15 20:07:54,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-15 20:07:54,370 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-15 20:07:54,370 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-15 20:07:54,370 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-15 20:07:54,371 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-15 20:07:54,371 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-15 20:07:54,371 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-15 20:07:59,239 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-15 20:07:59,239 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-15 20:07:59,241 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:07:59 BoogieIcfgContainer [2021-10-15 20:07:59,242 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-15 20:07:59,244 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-15 20:07:59,245 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-15 20:07:59,249 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-15 20:07:59,249 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 08:07:53" (1/3) ... [2021-10-15 20:07:59,250 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12c4e2b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 08:07:59, skipping insertion in model container [2021-10-15 20:07:59,250 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:07:54" (2/3) ... [2021-10-15 20:07:59,251 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12c4e2b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 08:07:59, skipping insertion in model container [2021-10-15 20:07:59,251 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:07:59" (3/3) ... [2021-10-15 20:07:59,253 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt_poly2.c [2021-10-15 20:07:59,260 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-15 20:07:59,260 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-15 20:07:59,348 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-15 20:07:59,357 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, mConcurrency=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 [2021-10-15 20:07:59,358 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-15 20:07:59,370 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 14 places, 16 transitions, 32 flow [2021-10-15 20:07:59,395 INFO L129 PetriNetUnfolder]: 3/16 cut-off events. [2021-10-15 20:07:59,396 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 20:07:59,398 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17 conditions, 16 events. 3/16 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 6 event pairs, 0 based on Foata normal form. 0/12 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-10-15 20:07:59,399 INFO L82 GeneralOperation]: Start removeDead. Operand has 14 places, 16 transitions, 32 flow [2021-10-15 20:07:59,404 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 10 places, 11 transitions, 22 flow [2021-10-15 20:07:59,408 INFO L129 PetriNetUnfolder]: 2/10 cut-off events. [2021-10-15 20:07:59,408 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 20:07:59,409 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:07:59,410 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:07:59,410 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 20:07:59,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:07:59,417 INFO L82 PathProgramCache]: Analyzing trace with hash 1182784621, now seen corresponding path program 1 times [2021-10-15 20:07:59,433 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-15 20:07:59,434 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2131303745] [2021-10-15 20:07:59,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:07:59,436 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-15 20:07:59,436 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28cb7c0b-1db8-4746-88ef-ff46be110385/bin/uautomizer-hJ6jxDFKc3/mathsat [2021-10-15 20:07:59,454 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28cb7c0b-1db8-4746-88ef-ff46be110385/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-15 20:07:59,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28cb7c0b-1db8-4746-88ef-ff46be110385/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-15 20:08:01,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 20:08:01,629 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-15 20:08:03,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 20:08:03,831 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-10-15 20:08:03,833 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-15 20:08:03,835 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 20:08:03,897 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28cb7c0b-1db8-4746-88ef-ff46be110385/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-10-15 20:08:04,038 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28cb7c0b-1db8-4746-88ef-ff46be110385/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 [2021-10-15 20:08:04,046 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-15 20:08:04,090 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 08:08:04 BoogieIcfgContainer [2021-10-15 20:08:04,091 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-15 20:08:04,092 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-15 20:08:04,092 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-15 20:08:04,092 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-15 20:08:04,093 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:07:59" (3/4) ... [2021-10-15 20:08:04,100 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-15 20:08:04,173 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28cb7c0b-1db8-4746-88ef-ff46be110385/bin/uautomizer-hJ6jxDFKc3/witness.graphml [2021-10-15 20:08:04,174 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-15 20:08:04,176 INFO L168 Benchmark]: Toolchain (without parser) took 10432.83 ms. Allocated memory is still 73.4 MB. Free memory was 51.2 MB in the beginning and 40.6 MB in the end (delta: 10.5 MB). Peak memory consumption was 11.3 MB. Max. memory is 16.1 GB. [2021-10-15 20:08:04,177 INFO L168 Benchmark]: CDTParser took 0.40 ms. Allocated memory is still 54.5 MB. Free memory is still 34.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 20:08:04,178 INFO L168 Benchmark]: CACSL2BoogieTranslator took 406.81 ms. Allocated memory is still 73.4 MB. Free memory was 50.9 MB in the beginning and 54.7 MB in the end (delta: -3.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-15 20:08:04,179 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.62 ms. Allocated memory is still 73.4 MB. Free memory was 54.5 MB in the beginning and 52.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 20:08:04,179 INFO L168 Benchmark]: Boogie Preprocessor took 53.95 ms. Allocated memory is still 73.4 MB. Free memory was 52.9 MB in the beginning and 51.6 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 20:08:04,180 INFO L168 Benchmark]: RCFGBuilder took 4985.10 ms. Allocated memory is still 73.4 MB. Free memory was 51.3 MB in the beginning and 40.3 MB in the end (delta: 11.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-15 20:08:04,181 INFO L168 Benchmark]: TraceAbstraction took 4846.50 ms. Allocated memory is still 73.4 MB. Free memory was 39.7 MB in the beginning and 43.3 MB in the end (delta: -3.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 20:08:04,182 INFO L168 Benchmark]: Witness Printer took 82.27 ms. Allocated memory is still 73.4 MB. Free memory was 43.3 MB in the beginning and 40.9 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 20:08:04,186 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40 ms. Allocated memory is still 54.5 MB. Free memory is still 34.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 406.81 ms. Allocated memory is still 73.4 MB. Free memory was 50.9 MB in the beginning and 54.7 MB in the end (delta: -3.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 48.62 ms. Allocated memory is still 73.4 MB. Free memory was 54.5 MB in the beginning and 52.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 53.95 ms. Allocated memory is still 73.4 MB. Free memory was 52.9 MB in the beginning and 51.6 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 4985.10 ms. Allocated memory is still 73.4 MB. Free memory was 51.3 MB in the beginning and 40.3 MB in the end (delta: 11.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4846.50 ms. Allocated memory is still 73.4 MB. Free memory was 39.7 MB in the beginning and 43.3 MB in the end (delta: -3.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 82.27 ms. Allocated memory is still 73.4 MB. Free memory was 43.3 MB in the beginning and 40.9 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms 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() [L12] COND FALSE !(!cond) VAL [C0=1.414213538, C1=0.229761391, C2=1.296735525, C3=-0.90109837, C4=0.4935534, C5=-0.118958666] [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 [C0=1.414213538, C1=0.229761391, C2=1.296735525, C3=-0.90109837, C4=0.4935534, C5=-0.118958666] [L43] COND FALSE !(exp % 2 == 0) [L47] r = r * C0 VAL [C0=1.414213538, C1=0.229761391, C2=1.296735525, C3=-0.90109837, C4=0.4935534, C5=-0.118958666] [L50] x.i[0] = (exp/2 + 511) << 20 [L51] EXPR x.d [L51] r = r * x.d [L53] return r; [L53] return r; VAL [C0=1.414213538, C1=0.229761391, C2=1.296735525, C3=-0.90109837, C4=0.4935534, C5=-0.118958666] [L63] y = sqrt_custom(x) [L14] COND TRUE !(cond) VAL [C0=1.414213538, C1=0.229761391, C2=1.296735525, C3=-0.90109837, C4=0.4935534, C5=-0.118958666] [L14] reach_error() VAL [C0=1.414213538, C1=0.229761391, C2=1.296735525, C3=-0.90109837, C4=0.4935534, C5=-0.118958666] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 4.1ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4728.2ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 46.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 37.6ms SsaConstructionTime, 2033.2ms SatisfiabilityAnalysisTime, 0.0ms InterpolantComputationTime, 9 NumberOfCodeBlocks, 9 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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! [2021-10-15 20:08:04,307 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28cb7c0b-1db8-4746-88ef-ff46be110385/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...