./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cdfpl/square_3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd04bf3-d7bf-49d4-ae8f-51d659431671/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd04bf3-d7bf-49d4-ae8f-51d659431671/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd04bf3-d7bf-49d4-ae8f-51d659431671/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd04bf3-d7bf-49d4-ae8f-51d659431671/bin/uautomizer-j4sWxH34Be/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/square_3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd04bf3-d7bf-49d4-ae8f-51d659431671/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd04bf3-d7bf-49d4-ae8f-51d659431671/bin/uautomizer-j4sWxH34Be --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 54bc71b58dbe807c61e65d61687d7dcd868b453f3ec0cc1b5cee1fe449bc0bdf ................................................................................................................................................................................................................................................................................... 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_6dd04bf3-d7bf-49d4-ae8f-51d659431671/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd04bf3-d7bf-49d4-ae8f-51d659431671/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd04bf3-d7bf-49d4-ae8f-51d659431671/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd04bf3-d7bf-49d4-ae8f-51d659431671/bin/uautomizer-j4sWxH34Be/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/square_3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd04bf3-d7bf-49d4-ae8f-51d659431671/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd04bf3-d7bf-49d4-ae8f-51d659431671/bin/uautomizer-j4sWxH34Be --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 54bc71b58dbe807c61e65d61687d7dcd868b453f3ec0cc1b5cee1fe449bc0bdf ................................................................................................................................................................................................................................................................................................. 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-e943c26 [2021-10-21 20:02:44,609 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 20:02:44,612 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 20:02:44,654 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 20:02:44,655 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 20:02:44,657 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 20:02:44,660 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 20:02:44,663 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 20:02:44,666 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 20:02:44,667 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 20:02:44,669 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 20:02:44,671 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 20:02:44,672 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 20:02:44,674 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 20:02:44,677 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 20:02:44,679 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 20:02:44,681 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 20:02:44,682 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 20:02:44,685 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 20:02:44,689 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 20:02:44,692 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 20:02:44,694 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 20:02:44,696 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 20:02:44,697 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 20:02:44,703 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 20:02:44,703 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 20:02:44,704 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 20:02:44,706 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 20:02:44,706 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 20:02:44,708 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 20:02:44,709 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 20:02:44,710 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 20:02:44,712 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 20:02:44,713 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 20:02:44,715 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 20:02:44,715 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 20:02:44,716 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 20:02:44,717 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 20:02:44,717 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 20:02:44,719 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 20:02:44,721 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 20:02:44,722 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd04bf3-d7bf-49d4-ae8f-51d659431671/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-21 20:02:44,780 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 20:02:44,780 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 20:02:44,781 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 20:02:44,782 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 20:02:44,792 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 20:02:44,793 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 20:02:44,793 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 20:02:44,793 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 20:02:44,794 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 20:02:44,794 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 20:02:44,796 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 20:02:44,796 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 20:02:44,796 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-21 20:02:44,797 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 20:02:44,797 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-21 20:02:44,797 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 20:02:44,798 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 20:02:44,798 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 20:02:44,798 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-21 20:02:44,798 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 20:02:44,799 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 20:02:44,799 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 20:02:44,799 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 20:02:44,800 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 20:02:44,800 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 20:02:44,800 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-21 20:02:44,801 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 20:02:44,801 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-21 20:02:44,801 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-21 20:02:44,804 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-21 20:02:44,804 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-21 20:02:44,804 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 20:02:44,805 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_6dd04bf3-d7bf-49d4-ae8f-51d659431671/bin/uautomizer-j4sWxH34Be/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd04bf3-d7bf-49d4-ae8f-51d659431671/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 54bc71b58dbe807c61e65d61687d7dcd868b453f3ec0cc1b5cee1fe449bc0bdf [2021-10-21 20:02:45,215 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 20:02:45,252 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 20:02:45,257 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 20:02:45,259 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 20:02:45,260 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 20:02:45,262 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd04bf3-d7bf-49d4-ae8f-51d659431671/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/floats-cdfpl/square_3.i [2021-10-21 20:02:45,390 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd04bf3-d7bf-49d4-ae8f-51d659431671/bin/uautomizer-j4sWxH34Be/data/93a3a62da/fe80cd876f604e3386dc6e5bfae055cb/FLAG9e8d4c467 [2021-10-21 20:02:46,075 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 20:02:46,076 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd04bf3-d7bf-49d4-ae8f-51d659431671/sv-benchmarks/c/floats-cdfpl/square_3.i [2021-10-21 20:02:46,100 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd04bf3-d7bf-49d4-ae8f-51d659431671/bin/uautomizer-j4sWxH34Be/data/93a3a62da/fe80cd876f604e3386dc6e5bfae055cb/FLAG9e8d4c467 [2021-10-21 20:02:46,432 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd04bf3-d7bf-49d4-ae8f-51d659431671/bin/uautomizer-j4sWxH34Be/data/93a3a62da/fe80cd876f604e3386dc6e5bfae055cb [2021-10-21 20:02:46,436 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 20:02:46,439 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 20:02:46,442 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 20:02:46,442 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 20:02:46,455 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 20:02:46,456 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:02:46" (1/1) ... [2021-10-21 20:02:46,458 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a0557ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:02:46, skipping insertion in model container [2021-10-21 20:02:46,458 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:02:46" (1/1) ... [2021-10-21 20:02:46,469 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 20:02:46,487 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 20:02:46,717 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_6dd04bf3-d7bf-49d4-ae8f-51d659431671/sv-benchmarks/c/floats-cdfpl/square_3.i[1131,1144] [2021-10-21 20:02:46,721 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:02:46,733 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 20:02:46,753 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_6dd04bf3-d7bf-49d4-ae8f-51d659431671/sv-benchmarks/c/floats-cdfpl/square_3.i[1131,1144] [2021-10-21 20:02:46,754 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:02:46,770 INFO L208 MainTranslator]: Completed translation [2021-10-21 20:02:46,770 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:02:46 WrapperNode [2021-10-21 20:02:46,770 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 20:02:46,772 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 20:02:46,772 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 20:02:46,772 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 20:02:46,780 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:02:46" (1/1) ... [2021-10-21 20:02:46,789 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:02:46" (1/1) ... [2021-10-21 20:02:46,810 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 20:02:46,812 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 20:02:46,812 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 20:02:46,812 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 20:02:46,819 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:02:46" (1/1) ... [2021-10-21 20:02:46,820 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:02:46" (1/1) ... [2021-10-21 20:02:46,821 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:02:46" (1/1) ... [2021-10-21 20:02:46,821 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:02:46" (1/1) ... [2021-10-21 20:02:46,827 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:02:46" (1/1) ... [2021-10-21 20:02:46,830 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:02:46" (1/1) ... [2021-10-21 20:02:46,831 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:02:46" (1/1) ... [2021-10-21 20:02:46,833 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 20:02:46,835 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 20:02:46,835 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 20:02:46,835 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 20:02:46,837 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:02:46" (1/1) ... [2021-10-21 20:02:46,860 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 20:02:46,875 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd04bf3-d7bf-49d4-ae8f-51d659431671/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:02:46,893 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd04bf3-d7bf-49d4-ae8f-51d659431671/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 20:02:46,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd04bf3-d7bf-49d4-ae8f-51d659431671/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 20:02:46,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-21 20:02:46,951 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 20:02:46,951 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 20:02:46,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 20:02:47,220 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 20:02:47,220 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-10-21 20:02:47,222 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:02:47 BoogieIcfgContainer [2021-10-21 20:02:47,223 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 20:02:47,225 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 20:02:47,225 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 20:02:47,250 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 20:02:47,250 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 08:02:46" (1/3) ... [2021-10-21 20:02:47,251 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29bd85f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 08:02:47, skipping insertion in model container [2021-10-21 20:02:47,251 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:02:46" (2/3) ... [2021-10-21 20:02:47,252 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29bd85f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 08:02:47, skipping insertion in model container [2021-10-21 20:02:47,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:02:47" (3/3) ... [2021-10-21 20:02:47,253 INFO L111 eAbstractionObserver]: Analyzing ICFG square_3.i [2021-10-21 20:02:47,260 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 20:02:47,275 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-21 20:02:47,337 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 20:02:47,346 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 [2021-10-21 20:02:47,346 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-21 20:02:47,382 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 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) [2021-10-21 20:02:47,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-21 20:02:47,403 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:02:47,404 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-21 20:02:47,405 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:02:47,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:02:47,413 INFO L82 PathProgramCache]: Analyzing trace with hash 889508712, now seen corresponding path program 1 times [2021-10-21 20:02:47,425 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:02:47,439 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770139801] [2021-10-21 20:02:47,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:02:47,441 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:02:47,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:02:47,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:02:47,644 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:02:47,645 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770139801] [2021-10-21 20:02:47,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770139801] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:02:47,647 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:02:47,647 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-21 20:02:47,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964105805] [2021-10-21 20:02:47,656 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-21 20:02:47,656 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:02:47,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-21 20:02:47,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-21 20:02:47,698 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 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 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2021-10-21 20:02:47,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:02:47,715 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2021-10-21 20:02:47,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-21 20:02:47,717 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 6 [2021-10-21 20:02:47,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:02:47,727 INFO L225 Difference]: With dead ends: 19 [2021-10-21 20:02:47,727 INFO L226 Difference]: Without dead ends: 7 [2021-10-21 20:02:47,731 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-21 20:02:47,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2021-10-21 20:02:47,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2021-10-21 20:02:47,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.0) internal successors, (6), 6 states have internal predecessors, (6), 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) [2021-10-21 20:02:47,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6 transitions. [2021-10-21 20:02:47,767 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 6 transitions. Word has length 6 [2021-10-21 20:02:47,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:02:47,768 INFO L470 AbstractCegarLoop]: Abstraction has 7 states and 6 transitions. [2021-10-21 20:02:47,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2021-10-21 20:02:47,769 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2021-10-21 20:02:47,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-21 20:02:47,770 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:02:47,770 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-21 20:02:47,770 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-21 20:02:47,771 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:02:47,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:02:47,773 INFO L82 PathProgramCache]: Analyzing trace with hash 889568294, now seen corresponding path program 1 times [2021-10-21 20:02:47,773 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:02:47,773 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217389047] [2021-10-21 20:02:47,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:02:47,774 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:02:47,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:02:47,815 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:02:47,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:02:47,883 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 20:02:47,884 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-21 20:02:47,887 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 20:02:47,889 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-21 20:02:47,897 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 20:02:47,936 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 08:02:47 BoogieIcfgContainer [2021-10-21 20:02:47,937 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 20:02:47,940 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 20:02:47,940 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 20:02:47,941 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 20:02:47,942 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:02:47" (3/4) ... [2021-10-21 20:02:47,946 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-21 20:02:47,947 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 20:02:47,951 INFO L168 Benchmark]: Toolchain (without parser) took 1509.47 ms. Allocated memory is still 94.4 MB. Free memory was 73.7 MB in the beginning and 64.3 MB in the end (delta: 9.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 16.1 GB. [2021-10-21 20:02:47,952 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 77.6 MB. Free memory is still 56.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:02:47,954 INFO L168 Benchmark]: CACSL2BoogieTranslator took 329.28 ms. Allocated memory is still 94.4 MB. Free memory was 73.4 MB in the beginning and 71.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-21 20:02:47,958 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.14 ms. Allocated memory is still 94.4 MB. Free memory was 71.2 MB in the beginning and 69.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 20:02:47,960 INFO L168 Benchmark]: Boogie Preprocessor took 22.06 ms. Allocated memory is still 94.4 MB. Free memory was 69.9 MB in the beginning and 68.9 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:02:47,968 INFO L168 Benchmark]: RCFGBuilder took 388.23 ms. Allocated memory is still 94.4 MB. Free memory was 68.9 MB in the beginning and 60.2 MB in the end (delta: 8.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-21 20:02:47,970 INFO L168 Benchmark]: TraceAbstraction took 712.09 ms. Allocated memory is still 94.4 MB. Free memory was 59.8 MB in the beginning and 64.3 MB in the end (delta: -4.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:02:47,971 INFO L168 Benchmark]: Witness Printer took 7.58 ms. Allocated memory is still 94.4 MB. Free memory is still 64.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:02:47,975 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 77.6 MB. Free memory is still 56.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 329.28 ms. Allocated memory is still 94.4 MB. Free memory was 73.4 MB in the beginning and 71.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 39.14 ms. Allocated memory is still 94.4 MB. Free memory was 71.2 MB in the beginning and 69.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 22.06 ms. Allocated memory is still 94.4 MB. Free memory was 69.9 MB in the beginning and 68.9 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 388.23 ms. Allocated memory is still 94.4 MB. Free memory was 68.9 MB in the beginning and 60.2 MB in the end (delta: 8.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 712.09 ms. Allocated memory is still 94.4 MB. Free memory was 59.8 MB in the beginning and 64.3 MB in the end (delta: -4.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 7.58 ms. Allocated memory is still 94.4 MB. Free memory is still 64.3 MB. 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: 29]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 28, overapproximation of someBinaryArithmeticFLOAToperation at line 26. Possible FailurePath: [L20] float IN = __VERIFIER_nondet_float(); [L15] COND FALSE !(!cond) [L23] float x = IN; [L25-L26] float result = 1.0f + 0.5f*x - 0.125f*x*x + 0.0625f*x*x*x - 0.0390625f*x*x*x*x; [L28] COND TRUE !(result >= 0.0f && result < 1.39843f) [L29] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 560.4ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 42.7ms, AutomataDifference: 73.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 13.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 10 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 17.9ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 11.0ms SsaConstructionTime, 69.1ms SatisfiabilityAnalysisTime, 61.3ms InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 5 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 [2021-10-21 20:02:48,042 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd04bf3-d7bf-49d4-ae8f-51d659431671/bin/uautomizer-j4sWxH34Be/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-e943c26 [2021-10-21 20:02:51,049 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 20:02:51,052 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 20:02:51,103 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 20:02:51,104 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 20:02:51,106 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 20:02:51,108 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 20:02:51,112 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 20:02:51,115 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 20:02:51,117 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 20:02:51,119 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 20:02:51,121 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 20:02:51,122 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 20:02:51,124 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 20:02:51,127 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 20:02:51,129 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 20:02:51,131 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 20:02:51,133 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 20:02:51,136 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 20:02:51,140 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 20:02:51,143 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 20:02:51,145 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 20:02:51,147 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 20:02:51,149 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 20:02:51,155 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 20:02:51,156 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 20:02:51,156 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 20:02:51,158 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 20:02:51,159 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 20:02:51,161 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 20:02:51,162 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 20:02:51,163 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 20:02:51,165 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 20:02:51,166 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 20:02:51,168 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 20:02:51,169 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 20:02:51,170 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 20:02:51,171 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 20:02:51,171 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 20:02:51,173 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 20:02:51,174 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 20:02:51,176 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd04bf3-d7bf-49d4-ae8f-51d659431671/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-10-21 20:02:51,212 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 20:02:51,212 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 20:02:51,213 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 20:02:51,213 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 20:02:51,215 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 20:02:51,215 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 20:02:51,216 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 20:02:51,216 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 20:02:51,216 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 20:02:51,217 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 20:02:51,217 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 20:02:51,218 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-21 20:02:51,218 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 20:02:51,218 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-21 20:02:51,219 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-21 20:02:51,219 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-21 20:02:51,219 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 20:02:51,220 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 20:02:51,220 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 20:02:51,220 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-21 20:02:51,221 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 20:02:51,221 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 20:02:51,222 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 20:02:51,222 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 20:02:51,222 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 20:02:51,223 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 20:02:51,223 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-21 20:02:51,224 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-21 20:02:51,224 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-21 20:02:51,224 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-21 20:02:51,225 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-21 20:02:51,225 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-21 20:02:51,225 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 20:02:51,226 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-21 20:02:51,226 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_6dd04bf3-d7bf-49d4-ae8f-51d659431671/bin/uautomizer-j4sWxH34Be/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd04bf3-d7bf-49d4-ae8f-51d659431671/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 54bc71b58dbe807c61e65d61687d7dcd868b453f3ec0cc1b5cee1fe449bc0bdf [2021-10-21 20:02:51,793 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 20:02:51,825 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 20:02:51,828 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 20:02:51,830 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 20:02:51,834 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 20:02:51,835 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd04bf3-d7bf-49d4-ae8f-51d659431671/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/floats-cdfpl/square_3.i [2021-10-21 20:02:51,947 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd04bf3-d7bf-49d4-ae8f-51d659431671/bin/uautomizer-j4sWxH34Be/data/33607f6a0/39d977eda5c0418ebddae1eb417ae1a6/FLAGcb4241cba [2021-10-21 20:02:52,631 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 20:02:52,632 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd04bf3-d7bf-49d4-ae8f-51d659431671/sv-benchmarks/c/floats-cdfpl/square_3.i [2021-10-21 20:02:52,641 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd04bf3-d7bf-49d4-ae8f-51d659431671/bin/uautomizer-j4sWxH34Be/data/33607f6a0/39d977eda5c0418ebddae1eb417ae1a6/FLAGcb4241cba [2021-10-21 20:02:52,984 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd04bf3-d7bf-49d4-ae8f-51d659431671/bin/uautomizer-j4sWxH34Be/data/33607f6a0/39d977eda5c0418ebddae1eb417ae1a6 [2021-10-21 20:02:52,987 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 20:02:52,990 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 20:02:52,992 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 20:02:52,992 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 20:02:52,998 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 20:02:53,011 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:02:52" (1/1) ... [2021-10-21 20:02:53,013 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13f1d019 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:02:53, skipping insertion in model container [2021-10-21 20:02:53,013 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:02:52" (1/1) ... [2021-10-21 20:02:53,023 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 20:02:53,043 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 20:02:53,237 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_6dd04bf3-d7bf-49d4-ae8f-51d659431671/sv-benchmarks/c/floats-cdfpl/square_3.i[1131,1144] [2021-10-21 20:02:53,242 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:02:53,259 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 20:02:53,295 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_6dd04bf3-d7bf-49d4-ae8f-51d659431671/sv-benchmarks/c/floats-cdfpl/square_3.i[1131,1144] [2021-10-21 20:02:53,296 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:02:53,348 INFO L208 MainTranslator]: Completed translation [2021-10-21 20:02:53,348 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:02:53 WrapperNode [2021-10-21 20:02:53,349 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 20:02:53,350 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 20:02:53,350 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 20:02:53,351 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 20:02:53,385 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:02:53" (1/1) ... [2021-10-21 20:02:53,413 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:02:53" (1/1) ... [2021-10-21 20:02:53,441 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 20:02:53,443 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 20:02:53,443 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 20:02:53,443 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 20:02:53,454 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:02:53" (1/1) ... [2021-10-21 20:02:53,455 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:02:53" (1/1) ... [2021-10-21 20:02:53,459 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:02:53" (1/1) ... [2021-10-21 20:02:53,459 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:02:53" (1/1) ... [2021-10-21 20:02:53,468 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:02:53" (1/1) ... [2021-10-21 20:02:53,471 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:02:53" (1/1) ... [2021-10-21 20:02:53,473 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:02:53" (1/1) ... [2021-10-21 20:02:53,476 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 20:02:53,478 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 20:02:53,478 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 20:02:53,478 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 20:02:53,479 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:02:53" (1/1) ... [2021-10-21 20:02:53,489 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 20:02:53,505 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd04bf3-d7bf-49d4-ae8f-51d659431671/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:02:53,525 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd04bf3-d7bf-49d4-ae8f-51d659431671/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 20:02:53,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd04bf3-d7bf-49d4-ae8f-51d659431671/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 20:02:53,583 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-21 20:02:53,583 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 20:02:53,583 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 20:02:53,583 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 20:02:55,989 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 20:02:55,990 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-10-21 20:02:55,992 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:02:55 BoogieIcfgContainer [2021-10-21 20:02:55,992 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 20:02:55,995 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 20:02:55,995 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 20:02:55,999 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 20:02:56,000 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 08:02:52" (1/3) ... [2021-10-21 20:02:56,001 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56037423 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 08:02:56, skipping insertion in model container [2021-10-21 20:02:56,001 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:02:53" (2/3) ... [2021-10-21 20:02:56,002 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56037423 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 08:02:56, skipping insertion in model container [2021-10-21 20:02:56,002 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:02:55" (3/3) ... [2021-10-21 20:02:56,004 INFO L111 eAbstractionObserver]: Analyzing ICFG square_3.i [2021-10-21 20:02:56,012 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 20:02:56,013 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-21 20:02:56,083 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 20:02:56,091 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 [2021-10-21 20:02:56,091 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-21 20:02:56,108 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 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) [2021-10-21 20:02:56,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-21 20:02:56,114 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:02:56,115 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-21 20:02:56,116 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:02:56,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:02:56,126 INFO L82 PathProgramCache]: Analyzing trace with hash 889508712, now seen corresponding path program 1 times [2021-10-21 20:02:56,142 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:02:56,143 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1016044803] [2021-10-21 20:02:56,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:02:56,145 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:02:56,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd04bf3-d7bf-49d4-ae8f-51d659431671/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:02:56,160 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd04bf3-d7bf-49d4-ae8f-51d659431671/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:02:56,168 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd04bf3-d7bf-49d4-ae8f-51d659431671/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-21 20:02:56,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:02:56,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-21 20:02:56,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:02:57,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:02:57,027 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:02:57,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:02:57,070 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:02:57,070 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1016044803] [2021-10-21 20:02:57,071 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1016044803] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 20:02:57,071 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:02:57,071 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-21 20:02:57,073 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911712785] [2021-10-21 20:02:57,079 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-21 20:02:57,080 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:02:57,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-21 20:02:57,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-21 20:02:57,101 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 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 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2021-10-21 20:02:57,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:02:57,118 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2021-10-21 20:02:57,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-21 20:02:57,120 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 6 [2021-10-21 20:02:57,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:02:57,130 INFO L225 Difference]: With dead ends: 19 [2021-10-21 20:02:57,130 INFO L226 Difference]: Without dead ends: 7 [2021-10-21 20:02:57,133 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-21 20:02:57,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2021-10-21 20:02:57,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2021-10-21 20:02:57,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.0) internal successors, (6), 6 states have internal predecessors, (6), 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) [2021-10-21 20:02:57,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6 transitions. [2021-10-21 20:02:57,171 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 6 transitions. Word has length 6 [2021-10-21 20:02:57,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:02:57,172 INFO L470 AbstractCegarLoop]: Abstraction has 7 states and 6 transitions. [2021-10-21 20:02:57,172 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2021-10-21 20:02:57,173 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2021-10-21 20:02:57,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-21 20:02:57,173 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:02:57,174 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-21 20:02:57,202 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd04bf3-d7bf-49d4-ae8f-51d659431671/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-10-21 20:02:57,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd04bf3-d7bf-49d4-ae8f-51d659431671/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:02:57,388 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:02:57,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:02:57,390 INFO L82 PathProgramCache]: Analyzing trace with hash 889568294, now seen corresponding path program 1 times [2021-10-21 20:02:57,391 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:02:57,391 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1121902867] [2021-10-21 20:02:57,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:02:57,392 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:02:57,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd04bf3-d7bf-49d4-ae8f-51d659431671/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:02:57,394 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd04bf3-d7bf-49d4-ae8f-51d659431671/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:02:57,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd04bf3-d7bf-49d4-ae8f-51d659431671/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-21 20:05:53,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:05:53,894 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:07:20,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:07:20,742 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-10-21 20:07:20,743 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-21 20:07:20,744 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 20:07:20,773 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd04bf3-d7bf-49d4-ae8f-51d659431671/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-21 20:07:20,946 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd04bf3-d7bf-49d4-ae8f-51d659431671/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:07:20,952 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 20:07:20,969 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 08:07:20 BoogieIcfgContainer [2021-10-21 20:07:20,969 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 20:07:20,970 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 20:07:20,970 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 20:07:20,971 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 20:07:20,971 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:02:55" (3/4) ... [2021-10-21 20:07:20,973 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-21 20:07:21,027 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd04bf3-d7bf-49d4-ae8f-51d659431671/bin/uautomizer-j4sWxH34Be/witness.graphml [2021-10-21 20:07:21,028 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 20:07:21,033 INFO L168 Benchmark]: Toolchain (without parser) took 268039.54 ms. Allocated memory was 56.6 MB in the beginning and 75.5 MB in the end (delta: 18.9 MB). Free memory was 34.3 MB in the beginning and 42.0 MB in the end (delta: -7.7 MB). Peak memory consumption was 11.3 MB. Max. memory is 16.1 GB. [2021-10-21 20:07:21,035 INFO L168 Benchmark]: CDTParser took 0.42 ms. Allocated memory is still 56.6 MB. Free memory was 37.3 MB in the beginning and 37.3 MB in the end (delta: 42.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:07:21,038 INFO L168 Benchmark]: CACSL2BoogieTranslator took 356.89 ms. Allocated memory was 56.6 MB in the beginning and 75.5 MB in the end (delta: 18.9 MB). Free memory was 34.0 MB in the beginning and 58.7 MB in the end (delta: -24.7 MB). Peak memory consumption was 13.9 MB. Max. memory is 16.1 GB. [2021-10-21 20:07:21,039 INFO L168 Benchmark]: Boogie Procedure Inliner took 91.11 ms. Allocated memory is still 75.5 MB. Free memory was 58.7 MB in the beginning and 57.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 20:07:21,041 INFO L168 Benchmark]: Boogie Preprocessor took 34.07 ms. Allocated memory is still 75.5 MB. Free memory was 57.3 MB in the beginning and 56.1 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:07:21,041 INFO L168 Benchmark]: RCFGBuilder took 2515.01 ms. Allocated memory is still 75.5 MB. Free memory was 56.1 MB in the beginning and 47.0 MB in the end (delta: 9.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-21 20:07:21,042 INFO L168 Benchmark]: TraceAbstraction took 264974.72 ms. Allocated memory is still 75.5 MB. Free memory was 46.6 MB in the beginning and 43.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 5.8 MB. Max. memory is 16.1 GB. [2021-10-21 20:07:21,042 INFO L168 Benchmark]: Witness Printer took 57.90 ms. Allocated memory is still 75.5 MB. Free memory was 43.8 MB in the beginning and 42.0 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 20:07:21,047 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.42 ms. Allocated memory is still 56.6 MB. Free memory was 37.3 MB in the beginning and 37.3 MB in the end (delta: 42.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 356.89 ms. Allocated memory was 56.6 MB in the beginning and 75.5 MB in the end (delta: 18.9 MB). Free memory was 34.0 MB in the beginning and 58.7 MB in the end (delta: -24.7 MB). Peak memory consumption was 13.9 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 91.11 ms. Allocated memory is still 75.5 MB. Free memory was 58.7 MB in the beginning and 57.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 34.07 ms. Allocated memory is still 75.5 MB. Free memory was 57.3 MB in the beginning and 56.1 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 2515.01 ms. Allocated memory is still 75.5 MB. Free memory was 56.1 MB in the beginning and 47.0 MB in the end (delta: 9.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 264974.72 ms. Allocated memory is still 75.5 MB. Free memory was 46.6 MB in the beginning and 43.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 5.8 MB. Max. memory is 16.1 GB. * Witness Printer took 57.90 ms. Allocated memory is still 75.5 MB. Free memory was 43.8 MB in the beginning and 42.0 MB in the end (delta: 1.8 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: 29]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L20] float IN = __VERIFIER_nondet_float(); [L15] COND FALSE !(!cond) [L23] float x = IN; [L25-L26] float result = 1.0f + 0.5f*x - 0.125f*x*x + 0.0625f*x*x*x - 0.0390625f*x*x*x*x; [L28] COND TRUE !(result >= 0.0f && result < 1.39843f) [L29] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 264870.4ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 10.9ms, AutomataDifference: 52.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 12.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 10 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 19.2ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 26.7ms SsaConstructionTime, 177117.9ms SatisfiabilityAnalysisTime, 175.8ms InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 10 SizeOfPredicates, 0 NumberOfNonLiveVariables, 26 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-10-21 20:07:21,130 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd04bf3-d7bf-49d4-ae8f-51d659431671/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...