./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cbmc-regression/float12.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf30f24-c35d-45ec-a884-d4c6be1479ae/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf30f24-c35d-45ec-a884-d4c6be1479ae/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf30f24-c35d-45ec-a884-d4c6be1479ae/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf30f24-c35d-45ec-a884-d4c6be1479ae/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float12.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf30f24-c35d-45ec-a884-d4c6be1479ae/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf30f24-c35d-45ec-a884-d4c6be1479ae/bin/utaipan-WLngWcDbfI --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 748862a4a10e7eb5031b0856b76be837613208b8 ................................................................................................................................................................................................................................................. 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_fcf30f24-c35d-45ec-a884-d4c6be1479ae/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf30f24-c35d-45ec-a884-d4c6be1479ae/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf30f24-c35d-45ec-a884-d4c6be1479ae/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf30f24-c35d-45ec-a884-d4c6be1479ae/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float12.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf30f24-c35d-45ec-a884-d4c6be1479ae/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf30f24-c35d-45ec-a884-d4c6be1479ae/bin/utaipan-WLngWcDbfI --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 748862a4a10e7eb5031b0856b76be837613208b8 .................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:20:18,076 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:20:18,078 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:20:18,127 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:20:18,127 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:20:18,129 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:20:18,131 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:20:18,134 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:20:18,137 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:20:18,138 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:20:18,140 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:20:18,142 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:20:18,143 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:20:18,144 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:20:18,146 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:20:18,148 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:20:18,149 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:20:18,151 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:20:18,154 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:20:18,157 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:20:18,159 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:20:18,161 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:20:18,163 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:20:18,165 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:20:18,169 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:20:18,170 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:20:18,170 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:20:18,172 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:20:18,173 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:20:18,174 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:20:18,175 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:20:18,177 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:20:18,178 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:20:18,179 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:20:18,181 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:20:18,182 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:20:18,183 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:20:18,184 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:20:18,184 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:20:18,185 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:20:18,186 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:20:18,187 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf30f24-c35d-45ec-a884-d4c6be1479ae/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:20:18,227 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:20:18,229 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:20:18,231 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:20:18,232 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:20:18,233 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:20:18,234 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:20:18,234 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:20:18,234 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:20:18,234 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:20:18,235 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:20:18,236 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:20:18,236 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:20:18,237 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:20:18,237 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:20:18,237 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:20:18,238 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:20:18,239 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:20:18,239 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:20:18,239 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:20:18,240 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:20:18,240 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:20:18,240 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:20:18,240 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:20:18,241 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:20:18,241 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:20:18,241 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:20:18,242 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:20:18,242 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:20:18,242 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:20:18,243 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:20:18,243 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:20:18,243 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:20:18,244 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:20:18,244 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:20:18,244 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:20:18,245 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:20:18,245 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:20:18,245 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:20:18,246 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:20:18,246 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_fcf30f24-c35d-45ec-a884-d4c6be1479ae/bin/utaipan-WLngWcDbfI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf30f24-c35d-45ec-a884-d4c6be1479ae/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 748862a4a10e7eb5031b0856b76be837613208b8 [2021-10-11 02:20:18,522 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:20:18,564 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:20:18,568 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:20:18,569 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:20:18,570 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:20:18,571 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf30f24-c35d-45ec-a884-d4c6be1479ae/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/floats-cbmc-regression/float12.c [2021-10-11 02:20:18,664 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf30f24-c35d-45ec-a884-d4c6be1479ae/bin/utaipan-WLngWcDbfI/data/1c2dd312c/2d64fcebdfa444f3999024ccf786b69b/FLAG2ea4b1414 [2021-10-11 02:20:19,187 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:20:19,188 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf30f24-c35d-45ec-a884-d4c6be1479ae/sv-benchmarks/c/floats-cbmc-regression/float12.c [2021-10-11 02:20:19,203 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf30f24-c35d-45ec-a884-d4c6be1479ae/bin/utaipan-WLngWcDbfI/data/1c2dd312c/2d64fcebdfa444f3999024ccf786b69b/FLAG2ea4b1414 [2021-10-11 02:20:19,542 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf30f24-c35d-45ec-a884-d4c6be1479ae/bin/utaipan-WLngWcDbfI/data/1c2dd312c/2d64fcebdfa444f3999024ccf786b69b [2021-10-11 02:20:19,545 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:20:19,547 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:20:19,549 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:20:19,549 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:20:19,553 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:20:19,554 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:20:19" (1/1) ... [2021-10-11 02:20:19,557 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5947f3c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:19, skipping insertion in model container [2021-10-11 02:20:19,557 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:20:19" (1/1) ... [2021-10-11 02:20:19,566 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:20:19,580 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:20:19,751 WARN L226 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_fcf30f24-c35d-45ec-a884-d4c6be1479ae/sv-benchmarks/c/floats-cbmc-regression/float12.c[500,513] [2021-10-11 02:20:19,755 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:20:19,767 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:20:19,797 WARN L226 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_fcf30f24-c35d-45ec-a884-d4c6be1479ae/sv-benchmarks/c/floats-cbmc-regression/float12.c[500,513] [2021-10-11 02:20:19,797 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:20:19,822 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:20:19,822 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:19 WrapperNode [2021-10-11 02:20:19,823 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:20:19,824 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:20:19,824 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:20:19,824 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:20:19,835 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:19" (1/1) ... [2021-10-11 02:20:19,843 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:19" (1/1) ... [2021-10-11 02:20:19,863 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:20:19,864 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:20:19,864 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:20:19,865 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:20:19,875 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:19" (1/1) ... [2021-10-11 02:20:19,875 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:19" (1/1) ... [2021-10-11 02:20:19,876 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:19" (1/1) ... [2021-10-11 02:20:19,877 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:19" (1/1) ... [2021-10-11 02:20:19,882 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:19" (1/1) ... [2021-10-11 02:20:19,884 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:19" (1/1) ... [2021-10-11 02:20:19,886 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:19" (1/1) ... [2021-10-11 02:20:19,887 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:20:19,889 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:20:19,889 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:20:19,889 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:20:19,890 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:19" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf30f24-c35d-45ec-a884-d4c6be1479ae/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:20:19,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:20:19,985 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:20:19,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:20:19,985 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:20:20,326 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:20:20,327 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-11 02:20:20,330 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:20:20 BoogieIcfgContainer [2021-10-11 02:20:20,330 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:20:20,353 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:20:20,353 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:20:20,368 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:20:20,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:20:19" (1/3) ... [2021-10-11 02:20:20,369 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c7624a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:20:20, skipping insertion in model container [2021-10-11 02:20:20,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:19" (2/3) ... [2021-10-11 02:20:20,370 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c7624a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:20:20, skipping insertion in model container [2021-10-11 02:20:20,370 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:20:20" (3/3) ... [2021-10-11 02:20:20,371 INFO L111 eAbstractionObserver]: Analyzing ICFG float12.c [2021-10-11 02:20:20,389 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:20:20,393 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:20:20,407 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 02:20:20,465 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:20:20,466 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:20:20,466 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:20:20,466 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:20:20,466 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:20:20,466 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:20:20,466 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:20:20,467 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:20:20,488 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states. [2021-10-11 02:20:20,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-11 02:20:20,510 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:20:20,510 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-11 02:20:20,511 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:20:20,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:20:20,529 INFO L82 PathProgramCache]: Analyzing trace with hash 1494612, now seen corresponding path program 1 times [2021-10-11 02:20:20,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:20:20,541 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269069784] [2021-10-11 02:20:20,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:20:20,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:20:20,695 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:20:20,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:20:20,719 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:20:20,741 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-11 02:20:20,742 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-10-11 02:20:20,742 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:20:20,759 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:20:20 BoogieIcfgContainer [2021-10-11 02:20:20,759 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:20:20,759 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:20:20,760 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:20:20,760 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:20:20,760 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:20:20" (3/4) ... [2021-10-11 02:20:20,766 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-11 02:20:20,766 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:20:20,772 INFO L168 Benchmark]: Toolchain (without parser) took 1221.04 ms. Allocated memory was 98.6 MB in the beginning and 119.5 MB in the end (delta: 21.0 MB). Free memory was 65.7 MB in the beginning and 69.2 MB in the end (delta: -3.4 MB). Peak memory consumption was 15.8 MB. Max. memory is 16.1 GB. [2021-10-11 02:20:20,774 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 98.6 MB. Free memory was 54.3 MB in the beginning and 54.2 MB in the end (delta: 77.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:20:20,776 INFO L168 Benchmark]: CACSL2BoogieTranslator took 274.08 ms. Allocated memory was 98.6 MB in the beginning and 119.5 MB in the end (delta: 21.0 MB). Free memory was 65.5 MB in the beginning and 95.9 MB in the end (delta: -30.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:20:20,777 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.34 ms. Allocated memory is still 119.5 MB. Free memory was 95.9 MB in the beginning and 94.3 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:20:20,777 INFO L168 Benchmark]: Boogie Preprocessor took 23.41 ms. Allocated memory is still 119.5 MB. Free memory was 94.3 MB in the beginning and 93.6 MB in the end (delta: 629.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:20:20,778 INFO L168 Benchmark]: RCFGBuilder took 441.54 ms. Allocated memory is still 119.5 MB. Free memory was 93.1 MB in the beginning and 81.2 MB in the end (delta: 11.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-11 02:20:20,778 INFO L168 Benchmark]: TraceAbstraction took 405.77 ms. Allocated memory is still 119.5 MB. Free memory was 80.6 MB in the beginning and 69.2 MB in the end (delta: 11.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-11 02:20:20,779 INFO L168 Benchmark]: Witness Printer took 7.61 ms. Allocated memory is still 119.5 MB. Free memory is still 69.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:20:20,783 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 98.6 MB. Free memory was 54.3 MB in the beginning and 54.2 MB in the end (delta: 77.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 274.08 ms. Allocated memory was 98.6 MB in the beginning and 119.5 MB in the end (delta: 21.0 MB). Free memory was 65.5 MB in the beginning and 95.9 MB in the end (delta: -30.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 39.34 ms. Allocated memory is still 119.5 MB. Free memory was 95.9 MB in the beginning and 94.3 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 23.41 ms. Allocated memory is still 119.5 MB. Free memory was 94.3 MB in the beginning and 93.6 MB in the end (delta: 629.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 441.54 ms. Allocated memory is still 119.5 MB. Free memory was 93.1 MB in the beginning and 81.2 MB in the end (delta: 11.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 405.77 ms. Allocated memory is still 119.5 MB. Free memory was 80.6 MB in the beginning and 69.2 MB in the end (delta: 11.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Witness Printer took 7.61 ms. Allocated memory is still 119.5 MB. Free memory is still 69.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 15]: 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 14, overapproximation of someBinaryDOUBLEComparisonOperation at line 15. Possible FailurePath: [L8] float f = __VERIFIER_nondet_float(); [L9] double d; [L10] unsigned char x = __VERIFIER_nondet_uchar(); [L12] d=f [L14] COND TRUE f==x [L15] COND TRUE !(d==x) [L15] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 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 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:20:23,577 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:20:23,579 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:20:23,623 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:20:23,623 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:20:23,630 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:20:23,633 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:20:23,638 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:20:23,641 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:20:23,648 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:20:23,652 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:20:23,653 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:20:23,654 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:20:23,657 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:20:23,659 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:20:23,661 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:20:23,662 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:20:23,667 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:20:23,669 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:20:23,678 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:20:23,681 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:20:23,683 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:20:23,686 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:20:23,689 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:20:23,693 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:20:23,693 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:20:23,694 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:20:23,696 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:20:23,697 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:20:23,698 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:20:23,698 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:20:23,700 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:20:23,702 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:20:23,703 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:20:23,704 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:20:23,704 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:20:23,705 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:20:23,706 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:20:23,706 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:20:23,709 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:20:23,710 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:20:23,711 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf30f24-c35d-45ec-a884-d4c6be1479ae/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-11 02:20:23,765 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:20:23,765 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:20:23,766 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:20:23,767 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:20:23,767 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:20:23,767 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:20:23,767 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:20:23,768 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:20:23,768 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:20:23,770 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:20:23,771 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:20:23,771 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:20:23,771 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:20:23,772 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:20:23,772 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:20:23,772 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:20:23,772 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:20:23,773 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-11 02:20:23,773 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-11 02:20:23,773 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:20:23,773 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:20:23,773 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:20:23,774 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:20:23,774 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:20:23,774 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-11 02:20:23,774 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:20:23,775 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:20:23,775 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:20:23,775 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:20:23,775 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:20:23,776 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-11 02:20:23,776 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-11 02:20:23,776 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:20:23,776 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:20:23,777 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:20:23,777 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_fcf30f24-c35d-45ec-a884-d4c6be1479ae/bin/utaipan-WLngWcDbfI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf30f24-c35d-45ec-a884-d4c6be1479ae/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 748862a4a10e7eb5031b0856b76be837613208b8 [2021-10-11 02:20:24,250 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:20:24,287 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:20:24,289 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:20:24,291 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:20:24,291 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:20:24,294 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf30f24-c35d-45ec-a884-d4c6be1479ae/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/floats-cbmc-regression/float12.c [2021-10-11 02:20:24,371 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf30f24-c35d-45ec-a884-d4c6be1479ae/bin/utaipan-WLngWcDbfI/data/d8a76fb27/d67b3d035dec4f7c97062ec35f6450fa/FLAG147dd48ff [2021-10-11 02:20:24,946 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:20:24,946 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf30f24-c35d-45ec-a884-d4c6be1479ae/sv-benchmarks/c/floats-cbmc-regression/float12.c [2021-10-11 02:20:24,954 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf30f24-c35d-45ec-a884-d4c6be1479ae/bin/utaipan-WLngWcDbfI/data/d8a76fb27/d67b3d035dec4f7c97062ec35f6450fa/FLAG147dd48ff [2021-10-11 02:20:25,298 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf30f24-c35d-45ec-a884-d4c6be1479ae/bin/utaipan-WLngWcDbfI/data/d8a76fb27/d67b3d035dec4f7c97062ec35f6450fa [2021-10-11 02:20:25,302 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:20:25,304 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:20:25,318 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:20:25,318 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:20:25,323 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:20:25,325 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:20:25" (1/1) ... [2021-10-11 02:20:25,328 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28daf09f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:25, skipping insertion in model container [2021-10-11 02:20:25,328 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:20:25" (1/1) ... [2021-10-11 02:20:25,338 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:20:25,364 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:20:25,545 WARN L226 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_fcf30f24-c35d-45ec-a884-d4c6be1479ae/sv-benchmarks/c/floats-cbmc-regression/float12.c[500,513] [2021-10-11 02:20:25,550 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:20:25,569 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:20:25,594 WARN L226 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_fcf30f24-c35d-45ec-a884-d4c6be1479ae/sv-benchmarks/c/floats-cbmc-regression/float12.c[500,513] [2021-10-11 02:20:25,595 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:20:25,624 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:20:25,626 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:25 WrapperNode [2021-10-11 02:20:25,626 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:20:25,629 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:20:25,629 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:20:25,629 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:20:25,639 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:25" (1/1) ... [2021-10-11 02:20:25,653 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:25" (1/1) ... [2021-10-11 02:20:25,682 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:20:25,683 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:20:25,683 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:20:25,683 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:20:25,693 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:25" (1/1) ... [2021-10-11 02:20:25,693 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:25" (1/1) ... [2021-10-11 02:20:25,701 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:25" (1/1) ... [2021-10-11 02:20:25,702 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:25" (1/1) ... [2021-10-11 02:20:25,724 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:25" (1/1) ... [2021-10-11 02:20:25,742 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:25" (1/1) ... [2021-10-11 02:20:25,744 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:25" (1/1) ... [2021-10-11 02:20:25,759 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:20:25,767 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:20:25,767 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:20:25,767 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:20:25,768 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:25" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf30f24-c35d-45ec-a884-d4c6be1479ae/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:20:25,880 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-11 02:20:25,888 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:20:25,889 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:20:25,889 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:20:26,644 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:20:26,645 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-11 02:20:26,646 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:20:26 BoogieIcfgContainer [2021-10-11 02:20:26,647 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:20:26,648 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:20:26,649 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:20:26,652 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:20:26,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:20:25" (1/3) ... [2021-10-11 02:20:26,653 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30fe67d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:20:26, skipping insertion in model container [2021-10-11 02:20:26,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:25" (2/3) ... [2021-10-11 02:20:26,654 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30fe67d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:20:26, skipping insertion in model container [2021-10-11 02:20:26,654 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:20:26" (3/3) ... [2021-10-11 02:20:26,656 INFO L111 eAbstractionObserver]: Analyzing ICFG float12.c [2021-10-11 02:20:26,672 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:20:26,675 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:20:26,688 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 02:20:26,727 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:20:26,728 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:20:26,728 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:20:26,728 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:20:26,728 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:20:26,729 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:20:26,729 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:20:26,729 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:20:26,745 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2021-10-11 02:20:26,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-11 02:20:26,753 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:20:26,754 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-11 02:20:26,754 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:20:26,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:20:26,761 INFO L82 PathProgramCache]: Analyzing trace with hash 28693795, now seen corresponding path program 1 times [2021-10-11 02:20:26,775 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:20:26,777 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1445210460] [2021-10-11 02:20:26,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf30f24-c35d-45ec-a884-d4c6be1479ae/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2021-10-11 02:20:26,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:20:26,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 02:20:26,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:20:27,545 WARN L197 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 5 [2021-10-11 02:20:29,261 WARN L197 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2021-10-11 02:20:29,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:20:29,929 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:20:29,929 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1445210460] [2021-10-11 02:20:29,930 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:20:29,930 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:20:29,931 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664763006] [2021-10-11 02:20:29,935 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:20:29,935 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:20:29,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:20:29,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:20:29,949 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 4 states. [2021-10-11 02:20:35,238 WARN L197 SmtUtils]: Spent 3.34 s on a formula simplification that was a NOOP. DAG size: 11 [2021-10-11 02:20:36,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:20:36,148 INFO L93 Difference]: Finished difference Result 15 states and 14 transitions. [2021-10-11 02:20:36,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:20:36,161 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2021-10-11 02:20:36,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:20:36,166 INFO L225 Difference]: With dead ends: 15 [2021-10-11 02:20:36,167 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:20:36,173 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:20:36,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:20:36,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:20:36,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:20:36,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:20:36,196 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 5 [2021-10-11 02:20:36,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:20:36,197 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:20:36,197 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:20:36,202 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:20:36,202 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:20:36,415 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2021-10-11 02:20:36,416 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-11 02:20:36,418 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-11 02:20:36,418 INFO L262 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-11 02:20:36,419 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-11 02:20:36,419 INFO L262 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-11 02:20:36,419 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 15) no Hoare annotation was computed. [2021-10-11 02:20:36,419 INFO L262 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2021-10-11 02:20:36,419 INFO L262 CegarLoopResult]: For program point L14(lines 14 15) no Hoare annotation was computed. [2021-10-11 02:20:36,419 INFO L262 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2021-10-11 02:20:36,419 INFO L262 CegarLoopResult]: For program point L6(lines 6 16) no Hoare annotation was computed. [2021-10-11 02:20:36,423 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:20:36 BoogieIcfgContainer [2021-10-11 02:20:36,423 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:20:36,424 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:20:36,424 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:20:36,424 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:20:36,425 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:20:26" (3/4) ... [2021-10-11 02:20:36,427 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:20:36,441 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-10-11 02:20:36,441 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-11 02:20:36,441 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-11 02:20:36,442 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:20:36,471 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcf30f24-c35d-45ec-a884-d4c6be1479ae/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:20:36,471 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:20:36,473 INFO L168 Benchmark]: Toolchain (without parser) took 11167.97 ms. Allocated memory is still 75.5 MB. Free memory was 41.4 MB in the beginning and 51.5 MB in the end (delta: -10.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:20:36,473 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 75.5 MB. Free memory was 57.6 MB in the beginning and 57.5 MB in the end (delta: 115.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:20:36,474 INFO L168 Benchmark]: CACSL2BoogieTranslator took 308.57 ms. Allocated memory is still 75.5 MB. Free memory was 41.0 MB in the beginning and 52.4 MB in the end (delta: -11.4 MB). Peak memory consumption was 5.9 MB. Max. memory is 16.1 GB. [2021-10-11 02:20:36,475 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.37 ms. Allocated memory is still 75.5 MB. Free memory was 52.4 MB in the beginning and 60.2 MB in the end (delta: -7.8 MB). Peak memory consumption was 4.8 MB. Max. memory is 16.1 GB. [2021-10-11 02:20:36,475 INFO L168 Benchmark]: Boogie Preprocessor took 82.83 ms. Allocated memory is still 75.5 MB. Free memory was 60.2 MB in the beginning and 59.0 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:20:36,476 INFO L168 Benchmark]: RCFGBuilder took 880.00 ms. Allocated memory is still 75.5 MB. Free memory was 59.0 MB in the beginning and 47.9 MB in the end (delta: 11.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:20:36,477 INFO L168 Benchmark]: TraceAbstraction took 9774.89 ms. Allocated memory is still 75.5 MB. Free memory was 47.3 MB in the beginning and 53.7 MB in the end (delta: -6.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:20:36,477 INFO L168 Benchmark]: Witness Printer took 47.52 ms. Allocated memory is still 75.5 MB. Free memory was 53.7 MB in the beginning and 51.5 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:20:36,481 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 75.5 MB. Free memory was 57.6 MB in the beginning and 57.5 MB in the end (delta: 115.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 308.57 ms. Allocated memory is still 75.5 MB. Free memory was 41.0 MB in the beginning and 52.4 MB in the end (delta: -11.4 MB). Peak memory consumption was 5.9 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 53.37 ms. Allocated memory is still 75.5 MB. Free memory was 52.4 MB in the beginning and 60.2 MB in the end (delta: -7.8 MB). Peak memory consumption was 4.8 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 82.83 ms. Allocated memory is still 75.5 MB. Free memory was 60.2 MB in the beginning and 59.0 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 880.00 ms. Allocated memory is still 75.5 MB. Free memory was 59.0 MB in the beginning and 47.9 MB in the end (delta: 11.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 9774.89 ms. Allocated memory is still 75.5 MB. Free memory was 47.3 MB in the beginning and 53.7 MB in the end (delta: -6.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 47.52 ms. Allocated memory is still 75.5 MB. Free memory was 53.7 MB in the beginning and 51.5 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 15]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 9.6s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 6.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 6 SDtfs, 8 SDslu, 2 SDs, 0 SdLazy, 7 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 0 LocationsWithAnnotation, 0 PreInvPairs, 0 NumberOfFragments, 0 HoareAnnotationTreeSize, 0 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 0 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 2.9s InterpolantComputationTime, 5 NumberOfCodeBlocks, 5 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 4 ConstructedInterpolants, 1 QuantifiedInterpolants, 76 SizeOfPredicates, 4 NumberOfNonLiveVariables, 28 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...