./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1051.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2d4d63-ee65-45ec-875d-692cfa780bdd/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2d4d63-ee65-45ec-875d-692cfa780bdd/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2d4d63-ee65-45ec-875d-692cfa780bdd/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2d4d63-ee65-45ec-875d-692cfa780bdd/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1051.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2d4d63-ee65-45ec-875d-692cfa780bdd/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2d4d63-ee65-45ec-875d-692cfa780bdd/bin/utaipan-mTDlp9Zugs --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 9192ebbb056e27a8831cb8246a8c32082898b28d ............................................................................................................................................................................................................................................................................................................. 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_9e2d4d63-ee65-45ec-875d-692cfa780bdd/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2d4d63-ee65-45ec-875d-692cfa780bdd/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2d4d63-ee65-45ec-875d-692cfa780bdd/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2d4d63-ee65-45ec-875d-692cfa780bdd/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1051.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2d4d63-ee65-45ec-875d-692cfa780bdd/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2d4d63-ee65-45ec-875d-692cfa780bdd/bin/utaipan-mTDlp9Zugs --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 9192ebbb056e27a8831cb8246a8c32082898b28d ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-16 02:50:45,040 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:50:45,043 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:50:45,110 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:50:45,111 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:50:45,116 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:50:45,119 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:50:45,124 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:50:45,128 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:50:45,138 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:50:45,140 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:50:45,143 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:50:45,143 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:50:45,147 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:50:45,151 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:50:45,158 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:50:45,162 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:50:45,163 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:50:45,167 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:50:45,177 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:50:45,180 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:50:45,182 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:50:45,187 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:50:45,188 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:50:45,201 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:50:45,201 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:50:45,202 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:50:45,205 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:50:45,206 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:50:45,208 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:50:45,209 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:50:45,210 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:50:45,213 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:50:45,215 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:50:45,218 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:50:45,218 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:50:45,220 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:50:45,220 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:50:45,221 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:50:45,222 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:50:45,223 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:50:45,224 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2d4d63-ee65-45ec-875d-692cfa780bdd/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-16 02:50:45,282 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:50:45,282 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:50:45,285 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:50:45,285 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:50:45,285 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:50:45,286 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:50:45,286 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-16 02:50:45,286 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:50:45,287 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:50:45,287 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-16 02:50:45,288 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-16 02:50:45,289 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:50:45,289 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-16 02:50:45,289 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-16 02:50:45,290 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-16 02:50:45,291 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:50:45,291 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:50:45,291 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 02:50:45,292 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:50:45,292 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:50:45,292 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 02:50:45,293 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:50:45,293 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 02:50:45,293 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:50:45,293 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:50:45,294 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 02:50:45,294 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:50:45,294 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 02:50:45,295 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:50:45,297 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:50:45,297 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:50:45,298 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:50:45,298 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:50:45,298 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 02:50:45,299 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-16 02:50:45,299 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-16 02:50:45,299 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 02:50:45,300 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:50:45,300 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:50:45,300 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_9e2d4d63-ee65-45ec-875d-692cfa780bdd/bin/utaipan-mTDlp9Zugs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2d4d63-ee65-45ec-875d-692cfa780bdd/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9192ebbb056e27a8831cb8246a8c32082898b28d [2021-10-16 02:50:45,614 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:50:45,646 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:50:45,649 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:50:45,651 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:50:45,652 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:50:45,653 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2d4d63-ee65-45ec-875d-692cfa780bdd/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/float-newlib/float_req_bl_1051.c [2021-10-16 02:50:45,773 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2d4d63-ee65-45ec-875d-692cfa780bdd/bin/utaipan-mTDlp9Zugs/data/347b1c028/3032bd73db414ad0aca17484ad3e8d73/FLAGe1ebb4d9e [2021-10-16 02:50:46,468 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:50:46,468 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2d4d63-ee65-45ec-875d-692cfa780bdd/sv-benchmarks/c/float-newlib/float_req_bl_1051.c [2021-10-16 02:50:46,487 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2d4d63-ee65-45ec-875d-692cfa780bdd/bin/utaipan-mTDlp9Zugs/data/347b1c028/3032bd73db414ad0aca17484ad3e8d73/FLAGe1ebb4d9e [2021-10-16 02:50:46,789 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2d4d63-ee65-45ec-875d-692cfa780bdd/bin/utaipan-mTDlp9Zugs/data/347b1c028/3032bd73db414ad0aca17484ad3e8d73 [2021-10-16 02:50:46,791 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:50:46,792 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:50:46,794 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:50:46,794 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:50:46,798 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:50:46,799 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:50:46" (1/1) ... [2021-10-16 02:50:46,800 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f12467c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:50:46, skipping insertion in model container [2021-10-16 02:50:46,800 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:50:46" (1/1) ... [2021-10-16 02:50:46,809 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:50:46,837 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:50:47,090 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_9e2d4d63-ee65-45ec-875d-692cfa780bdd/sv-benchmarks/c/float-newlib/float_req_bl_1051.c[1637,1650] [2021-10-16 02:50:47,093 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:50:47,104 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 02:50:47,134 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_9e2d4d63-ee65-45ec-875d-692cfa780bdd/sv-benchmarks/c/float-newlib/float_req_bl_1051.c[1637,1650] [2021-10-16 02:50:47,135 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:50:47,151 INFO L208 MainTranslator]: Completed translation [2021-10-16 02:50:47,152 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:50:47 WrapperNode [2021-10-16 02:50:47,152 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:50:47,153 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 02:50:47,154 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 02:50:47,154 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 02:50:47,164 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:50:47" (1/1) ... [2021-10-16 02:50:47,173 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:50:47" (1/1) ... [2021-10-16 02:50:47,207 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:50:47,213 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:50:47,214 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:50:47,214 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:50:47,226 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:50:47" (1/1) ... [2021-10-16 02:50:47,226 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:50:47" (1/1) ... [2021-10-16 02:50:47,234 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:50:47" (1/1) ... [2021-10-16 02:50:47,236 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:50:47" (1/1) ... [2021-10-16 02:50:47,264 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:50:47" (1/1) ... [2021-10-16 02:50:47,271 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:50:47" (1/1) ... [2021-10-16 02:50:47,275 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:50:47" (1/1) ... [2021-10-16 02:50:47,279 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:50:47,280 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:50:47,280 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:50:47,280 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:50:47,291 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:50:47" (1/1) ... [2021-10-16 02:50:47,312 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:50:47,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2d4d63-ee65-45ec-875d-692cfa780bdd/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:50:47,346 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2d4d63-ee65-45ec-875d-692cfa780bdd/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:50:47,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2d4d63-ee65-45ec-875d-692cfa780bdd/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:50:47,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-16 02:50:47,395 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 02:50:47,395 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-10-16 02:50:47,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-16 02:50:47,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-10-16 02:50:47,396 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:50:47,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:50:47,397 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-16 02:50:47,397 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-16 02:50:47,929 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:50:47,930 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-10-16 02:50:47,933 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:50:47 BoogieIcfgContainer [2021-10-16 02:50:47,933 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:50:47,935 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:50:47,935 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:50:47,954 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:50:47,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:50:46" (1/3) ... [2021-10-16 02:50:47,955 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70eefd9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:50:47, skipping insertion in model container [2021-10-16 02:50:47,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:50:47" (2/3) ... [2021-10-16 02:50:47,956 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70eefd9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:50:47, skipping insertion in model container [2021-10-16 02:50:47,956 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:50:47" (3/3) ... [2021-10-16 02:50:47,958 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1051.c [2021-10-16 02:50:47,965 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:50:47,966 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-16 02:50:48,025 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:50:48,033 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, 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 [2021-10-16 02:50:48,034 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-16 02:50:48,052 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 15 states have internal predecessors, (23), 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) [2021-10-16 02:50:48,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-16 02:50:48,059 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:50:48,059 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:50:48,060 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:50:48,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:50:48,084 INFO L82 PathProgramCache]: Analyzing trace with hash -342175972, now seen corresponding path program 1 times [2021-10-16 02:50:48,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:50:48,099 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707594360] [2021-10-16 02:50:48,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:50:48,102 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:50:48,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:50:48,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:50:48,364 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:50:48,364 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707594360] [2021-10-16 02:50:48,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707594360] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:50:48,366 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:50:48,366 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-16 02:50:48,369 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980793126] [2021-10-16 02:50:48,375 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-16 02:50:48,375 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:50:48,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-16 02:50:48,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 02:50:48,404 INFO L87 Difference]: Start difference. First operand has 16 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 15 states have internal predecessors, (23), 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 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2021-10-16 02:50:48,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:50:48,420 INFO L93 Difference]: Finished difference Result 31 states and 45 transitions. [2021-10-16 02:50:48,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-16 02:50:48,422 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 7 [2021-10-16 02:50:48,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:50:48,432 INFO L225 Difference]: With dead ends: 31 [2021-10-16 02:50:48,432 INFO L226 Difference]: Without dead ends: 14 [2021-10-16 02:50:48,436 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 [2021-10-16 02:50:48,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-10-16 02:50:48,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-10-16 02:50:48,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:50:48,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2021-10-16 02:50:48,473 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 7 [2021-10-16 02:50:48,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:50:48,475 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2021-10-16 02:50:48,475 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2021-10-16 02:50:48,475 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2021-10-16 02:50:48,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-16 02:50:48,476 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:50:48,476 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:50:48,476 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-16 02:50:48,477 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:50:48,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:50:48,484 INFO L82 PathProgramCache]: Analyzing trace with hash 141140715, now seen corresponding path program 1 times [2021-10-16 02:50:48,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:50:48,487 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010153807] [2021-10-16 02:50:48,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:50:48,488 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:50:48,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-16 02:50:48,626 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-16 02:50:48,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-16 02:50:48,723 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-16 02:50:48,724 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-16 02:50:48,726 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:50:48,733 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-16 02:50:48,740 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 02:50:48,780 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 02:50:48 BoogieIcfgContainer [2021-10-16 02:50:48,780 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 02:50:48,781 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 02:50:48,782 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 02:50:48,783 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 02:50:48,783 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:50:47" (3/4) ... [2021-10-16 02:50:48,787 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-16 02:50:48,787 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 02:50:48,791 INFO L168 Benchmark]: Toolchain (without parser) took 1996.49 ms. Allocated memory was 107.0 MB in the beginning and 140.5 MB in the end (delta: 33.6 MB). Free memory was 73.7 MB in the beginning and 69.3 MB in the end (delta: 4.4 MB). Peak memory consumption was 34.7 MB. Max. memory is 16.1 GB. [2021-10-16 02:50:48,793 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 107.0 MB. Free memory was 59.2 MB in the beginning and 59.1 MB in the end (delta: 85.9 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:50:48,796 INFO L168 Benchmark]: CACSL2BoogieTranslator took 358.46 ms. Allocated memory was 107.0 MB in the beginning and 140.5 MB in the end (delta: 33.6 MB). Free memory was 73.7 MB in the beginning and 114.8 MB in the end (delta: -41.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-16 02:50:48,803 INFO L168 Benchmark]: Boogie Procedure Inliner took 57.51 ms. Allocated memory is still 140.5 MB. Free memory was 114.8 MB in the beginning and 112.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:50:48,805 INFO L168 Benchmark]: Boogie Preprocessor took 66.05 ms. Allocated memory is still 140.5 MB. Free memory was 112.7 MB in the beginning and 111.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:50:48,805 INFO L168 Benchmark]: RCFGBuilder took 653.30 ms. Allocated memory is still 140.5 MB. Free memory was 111.2 MB in the beginning and 95.9 MB in the end (delta: 15.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-16 02:50:48,806 INFO L168 Benchmark]: TraceAbstraction took 844.77 ms. Allocated memory is still 140.5 MB. Free memory was 95.2 MB in the beginning and 69.3 MB in the end (delta: 25.9 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. [2021-10-16 02:50:48,807 INFO L168 Benchmark]: Witness Printer took 6.33 ms. Allocated memory is still 140.5 MB. Free memory is still 69.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:50:48,817 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 107.0 MB. Free memory was 59.2 MB in the beginning and 59.1 MB in the end (delta: 85.9 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 358.46 ms. Allocated memory was 107.0 MB in the beginning and 140.5 MB in the end (delta: 33.6 MB). Free memory was 73.7 MB in the beginning and 114.8 MB in the end (delta: -41.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 57.51 ms. Allocated memory is still 140.5 MB. Free memory was 114.8 MB in the beginning and 112.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 66.05 ms. Allocated memory is still 140.5 MB. Free memory was 112.7 MB in the beginning and 111.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 653.30 ms. Allocated memory is still 140.5 MB. Free memory was 111.2 MB in the beginning and 95.9 MB in the end (delta: 15.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 844.77 ms. Allocated memory is still 140.5 MB. Free memory was 95.2 MB in the beginning and 69.3 MB in the end (delta: 25.9 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. * Witness Printer took 6.33 ms. Allocated memory is still 140.5 MB. Free memory is still 69.3 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: 73]: 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 60, overapproximation of someBinaryArithmeticFLOAToperation at line 47, overapproximation of bitwiseAnd at line 24. Possible FailurePath: [L14] static const float huge_floor = 1.0e30; [L68] float x = 0.0f / 0.0f; [L17] __int32_t i0, j0; [L18] __uint32_t i, ix; VAL [huge_floor=1000000000000000000000000000000] [L20] ieee_float_shape_type gf_u; [L21] gf_u.value = (x) [L22] EXPR gf_u.word [L22] (i0) = gf_u.word [L24] ix = (i0 & 0x7fffffff) [L25] j0 = (ix >> 23) - 0x7f VAL [huge_floor=1000000000000000000000000000000] [L26] COND FALSE !(j0 < 23) [L46] COND TRUE !((ix) < 0x7f800000L) [L47] return x + x; VAL [huge_floor=1000000000000000000000000000000] [L69] float res = floor_float(x); [L60] return x != x; [L72] COND TRUE !isnan_float(res) [L73] reach_error() VAL [huge_floor=1000000000000000000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 715.1ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 12.4ms, AutomataDifference: 59.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 12.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 18 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=16occurred 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: 19.8ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 18.2ms SsaConstructionTime, 168.3ms SatisfiabilityAnalysisTime, 95.2ms InterpolantComputationTime, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 6 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 [2021-10-16 02:50:48,871 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2d4d63-ee65-45ec-875d-692cfa780bdd/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-5709675 [2021-10-16 02:50:51,946 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:50:51,949 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:50:51,984 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:50:51,984 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:50:51,986 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:50:51,988 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:50:51,991 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:50:51,994 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:50:51,996 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:50:51,997 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:50:51,999 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:50:52,000 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:50:52,002 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:50:52,004 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:50:52,006 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:50:52,007 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:50:52,008 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:50:52,011 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:50:52,013 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:50:52,016 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:50:52,017 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:50:52,019 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:50:52,020 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:50:52,025 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:50:52,028 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:50:52,029 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:50:52,030 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:50:52,031 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:50:52,032 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:50:52,032 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:50:52,033 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:50:52,035 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:50:52,036 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:50:52,037 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:50:52,038 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:50:52,039 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:50:52,039 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:50:52,039 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:50:52,048 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:50:52,050 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:50:52,051 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2d4d63-ee65-45ec-875d-692cfa780bdd/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-16 02:50:52,094 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:50:52,094 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:50:52,095 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:50:52,096 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:50:52,096 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:50:52,096 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:50:52,096 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:50:52,096 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:50:52,097 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:50:52,098 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:50:52,098 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:50:52,098 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:50:52,098 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:50:52,098 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 02:50:52,099 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:50:52,099 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 02:50:52,099 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:50:52,099 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-16 02:50:52,099 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-16 02:50:52,100 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:50:52,100 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 02:50:52,100 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:50:52,100 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 02:50:52,100 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:50:52,101 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-16 02:50:52,101 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:50:52,101 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:50:52,101 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:50:52,102 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:50:52,102 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 02:50:52,102 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-16 02:50:52,102 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-16 02:50:52,102 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 02:50:52,103 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:50:52,103 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:50:52,103 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_9e2d4d63-ee65-45ec-875d-692cfa780bdd/bin/utaipan-mTDlp9Zugs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2d4d63-ee65-45ec-875d-692cfa780bdd/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9192ebbb056e27a8831cb8246a8c32082898b28d [2021-10-16 02:50:52,610 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:50:52,649 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:50:52,653 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:50:52,655 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:50:52,656 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:50:52,657 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2d4d63-ee65-45ec-875d-692cfa780bdd/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/float-newlib/float_req_bl_1051.c [2021-10-16 02:50:52,752 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2d4d63-ee65-45ec-875d-692cfa780bdd/bin/utaipan-mTDlp9Zugs/data/370554082/3513976b10a540ab8fb4c37e466cee2b/FLAGd9f3d7523 [2021-10-16 02:50:53,412 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:50:53,417 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2d4d63-ee65-45ec-875d-692cfa780bdd/sv-benchmarks/c/float-newlib/float_req_bl_1051.c [2021-10-16 02:50:53,427 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2d4d63-ee65-45ec-875d-692cfa780bdd/bin/utaipan-mTDlp9Zugs/data/370554082/3513976b10a540ab8fb4c37e466cee2b/FLAGd9f3d7523 [2021-10-16 02:50:53,752 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2d4d63-ee65-45ec-875d-692cfa780bdd/bin/utaipan-mTDlp9Zugs/data/370554082/3513976b10a540ab8fb4c37e466cee2b [2021-10-16 02:50:53,756 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:50:53,757 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:50:53,760 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:50:53,760 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:50:53,765 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:50:53,766 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:50:53" (1/1) ... [2021-10-16 02:50:53,768 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76196ff1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:50:53, skipping insertion in model container [2021-10-16 02:50:53,768 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:50:53" (1/1) ... [2021-10-16 02:50:53,777 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:50:53,801 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:50:53,985 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_9e2d4d63-ee65-45ec-875d-692cfa780bdd/sv-benchmarks/c/float-newlib/float_req_bl_1051.c[1637,1650] [2021-10-16 02:50:53,989 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:50:54,007 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 02:50:54,056 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_9e2d4d63-ee65-45ec-875d-692cfa780bdd/sv-benchmarks/c/float-newlib/float_req_bl_1051.c[1637,1650] [2021-10-16 02:50:54,059 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:50:54,099 INFO L208 MainTranslator]: Completed translation [2021-10-16 02:50:54,099 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:50:54 WrapperNode [2021-10-16 02:50:54,100 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:50:54,101 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 02:50:54,102 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 02:50:54,102 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 02:50:54,112 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:50:54" (1/1) ... [2021-10-16 02:50:54,151 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:50:54" (1/1) ... [2021-10-16 02:50:54,194 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:50:54,196 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:50:54,196 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:50:54,196 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:50:54,206 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:50:54" (1/1) ... [2021-10-16 02:50:54,207 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:50:54" (1/1) ... [2021-10-16 02:50:54,224 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:50:54" (1/1) ... [2021-10-16 02:50:54,225 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:50:54" (1/1) ... [2021-10-16 02:50:54,250 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:50:54" (1/1) ... [2021-10-16 02:50:54,257 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:50:54" (1/1) ... [2021-10-16 02:50:54,268 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:50:54" (1/1) ... [2021-10-16 02:50:54,277 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:50:54,278 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:50:54,278 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:50:54,279 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:50:54,280 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:50:54" (1/1) ... [2021-10-16 02:50:54,289 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:50:54,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2d4d63-ee65-45ec-875d-692cfa780bdd/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:50:54,318 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2d4d63-ee65-45ec-875d-692cfa780bdd/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:50:54,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2d4d63-ee65-45ec-875d-692cfa780bdd/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:50:54,377 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-16 02:50:54,377 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 02:50:54,378 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2021-10-16 02:50:54,378 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-16 02:50:54,378 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:50:54,378 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:50:54,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2021-10-16 02:50:54,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-16 02:50:54,379 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-16 02:50:55,420 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:50:55,420 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-10-16 02:50:55,423 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:50:55 BoogieIcfgContainer [2021-10-16 02:50:55,423 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:50:55,426 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:50:55,426 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:50:55,430 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:50:55,431 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:50:53" (1/3) ... [2021-10-16 02:50:55,432 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@653dba15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:50:55, skipping insertion in model container [2021-10-16 02:50:55,432 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:50:54" (2/3) ... [2021-10-16 02:50:55,432 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@653dba15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:50:55, skipping insertion in model container [2021-10-16 02:50:55,433 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:50:55" (3/3) ... [2021-10-16 02:50:55,435 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1051.c [2021-10-16 02:50:55,442 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:50:55,442 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-16 02:50:55,521 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:50:55,539 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, 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 [2021-10-16 02:50:55,539 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-16 02:50:55,559 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 24 states have (on average 1.625) internal successors, (39), 25 states have internal predecessors, (39), 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) [2021-10-16 02:50:55,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-16 02:50:55,566 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:50:55,567 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:50:55,568 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:50:55,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:50:55,575 INFO L82 PathProgramCache]: Analyzing trace with hash -2022266355, now seen corresponding path program 1 times [2021-10-16 02:50:55,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:50:55,591 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [778056566] [2021-10-16 02:50:55,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:50:55,592 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:50:55,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2d4d63-ee65-45ec-875d-692cfa780bdd/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:50:55,596 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2d4d63-ee65-45ec-875d-692cfa780bdd/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:50:55,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2d4d63-ee65-45ec-875d-692cfa780bdd/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-16 02:50:55,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:50:55,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-16 02:50:55,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:50:55,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:50:55,861 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:50:55,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:50:55,900 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:50:55,900 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [778056566] [2021-10-16 02:50:55,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [778056566] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:50:55,901 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:50:55,902 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-16 02:50:55,904 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622410855] [2021-10-16 02:50:55,909 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-16 02:50:55,910 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:50:55,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-16 02:50:55,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 02:50:55,928 INFO L87 Difference]: Start difference. First operand has 26 states, 24 states have (on average 1.625) internal successors, (39), 25 states have internal predecessors, (39), 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 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:50:55,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:50:55,951 INFO L93 Difference]: Finished difference Result 50 states and 76 transitions. [2021-10-16 02:50:55,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-16 02:50:55,953 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-16 02:50:55,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:50:55,969 INFO L225 Difference]: With dead ends: 50 [2021-10-16 02:50:55,969 INFO L226 Difference]: Without dead ends: 23 [2021-10-16 02:50:55,973 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 02:50:55,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-10-16 02:50:56,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-10-16 02:50:56,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 22 states have internal predecessors, (31), 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) [2021-10-16 02:50:56,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 31 transitions. [2021-10-16 02:50:56,025 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 31 transitions. Word has length 10 [2021-10-16 02:50:56,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:50:56,026 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 31 transitions. [2021-10-16 02:50:56,026 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:50:56,027 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 31 transitions. [2021-10-16 02:50:56,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-16 02:50:56,028 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:50:56,029 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:50:56,054 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2d4d63-ee65-45ec-875d-692cfa780bdd/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-16 02:50:56,245 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2d4d63-ee65-45ec-875d-692cfa780bdd/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:50:56,245 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:50:56,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:50:56,251 INFO L82 PathProgramCache]: Analyzing trace with hash -62606256, now seen corresponding path program 1 times [2021-10-16 02:50:56,251 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:50:56,252 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2050562830] [2021-10-16 02:50:56,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:50:56,252 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:50:56,253 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2d4d63-ee65-45ec-875d-692cfa780bdd/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:50:56,255 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2d4d63-ee65-45ec-875d-692cfa780bdd/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:50:56,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2d4d63-ee65-45ec-875d-692cfa780bdd/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-16 02:50:56,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:50:56,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-16 02:50:56,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:50:56,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:50:56,750 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:50:56,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:50:56,989 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:50:56,990 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2050562830] [2021-10-16 02:50:56,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2050562830] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:50:56,990 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:50:56,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-10-16 02:50:56,991 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637377987] [2021-10-16 02:50:56,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-16 02:50:56,993 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:50:56,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-16 02:50:56,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-16 02:50:56,995 INFO L87 Difference]: Start difference. First operand 23 states and 31 transitions. Second operand has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 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) [2021-10-16 02:50:57,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:50:57,788 INFO L93 Difference]: Finished difference Result 34 states and 41 transitions. [2021-10-16 02:50:57,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-16 02:50:57,789 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 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 11 [2021-10-16 02:50:57,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:50:57,790 INFO L225 Difference]: With dead ends: 34 [2021-10-16 02:50:57,790 INFO L226 Difference]: Without dead ends: 18 [2021-10-16 02:50:57,791 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 547.0ms TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2021-10-16 02:50:57,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-10-16 02:50:57,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-10-16 02:50:57,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 17 states have internal predecessors, (18), 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) [2021-10-16 02:50:57,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2021-10-16 02:50:57,796 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 11 [2021-10-16 02:50:57,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:50:57,796 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2021-10-16 02:50:57,797 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 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) [2021-10-16 02:50:57,797 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2021-10-16 02:50:57,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-16 02:50:57,798 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:50:57,798 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:50:57,824 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2d4d63-ee65-45ec-875d-692cfa780bdd/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-16 02:50:58,025 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2d4d63-ee65-45ec-875d-692cfa780bdd/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:50:58,026 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:50:58,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:50:58,027 INFO L82 PathProgramCache]: Analyzing trace with hash 1612289523, now seen corresponding path program 1 times [2021-10-16 02:50:58,028 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:50:58,029 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1425277725] [2021-10-16 02:50:58,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:50:58,029 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:50:58,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2d4d63-ee65-45ec-875d-692cfa780bdd/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:50:58,037 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2d4d63-ee65-45ec-875d-692cfa780bdd/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:50:58,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2d4d63-ee65-45ec-875d-692cfa780bdd/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-16 02:50:58,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:50:58,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-16 02:50:58,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:50:58,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:50:58,596 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:50:58,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:50:58,827 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:50:58,827 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1425277725] [2021-10-16 02:50:58,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1425277725] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:50:58,828 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:50:58,828 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-10-16 02:50:58,828 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351149917] [2021-10-16 02:50:58,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-16 02:50:58,829 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:50:58,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-16 02:50:58,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-16 02:50:58,831 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 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) [2021-10-16 02:50:58,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:50:58,965 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2021-10-16 02:50:58,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-16 02:50:58,966 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 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 15 [2021-10-16 02:50:58,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:50:58,966 INFO L225 Difference]: With dead ends: 18 [2021-10-16 02:50:58,966 INFO L226 Difference]: Without dead ends: 0 [2021-10-16 02:50:58,967 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 293.6ms TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-10-16 02:50:58,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-16 02:50:58,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-16 02:50:58,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2021-10-16 02:50:58,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-16 02:50:58,968 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2021-10-16 02:50:58,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:50:58,968 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-16 02:50:58,968 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 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) [2021-10-16 02:50:58,969 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-16 02:50:58,969 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-16 02:50:58,971 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:50:58,993 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2d4d63-ee65-45ec-875d-692cfa780bdd/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-16 02:50:59,172 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2d4d63-ee65-45ec-875d-692cfa780bdd/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:50:59,174 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-16 02:50:59,178 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:50:59,223 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:50:59,226 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:50:59,229 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:50:59,329 INFO L857 garLoopResultBuilder]: For program point L31(lines 31 33) no Hoare annotation was computed. [2021-10-16 02:50:59,329 INFO L853 garLoopResultBuilder]: At program point L60(line 60) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= ULTIMATE.start_floor_float_~x (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)))) (exists ((currentRoundingMode RoundingMode)) (= |ULTIMATE.start_floor_float_#res| (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)))) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|)) [2021-10-16 02:50:59,329 INFO L857 garLoopResultBuilder]: For program point L27(lines 27 44) no Hoare annotation was computed. [2021-10-16 02:50:59,330 INFO L853 garLoopResultBuilder]: At program point L56(lines 16 57) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= ULTIMATE.start_floor_float_~x (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)))) (exists ((currentRoundingMode RoundingMode)) (= |ULTIMATE.start_floor_float_#res| (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24))))) [2021-10-16 02:50:59,330 INFO L857 garLoopResultBuilder]: For program point L19-1(lines 19 23) no Hoare annotation was computed. [2021-10-16 02:50:59,330 INFO L853 garLoopResultBuilder]: At program point L19-2(lines 19 23) the Hoare annotation is: (exists ((currentRoundingMode RoundingMode)) (= ULTIMATE.start_floor_float_~x (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)))) [2021-10-16 02:50:59,331 INFO L857 garLoopResultBuilder]: For program point L19-3(lines 19 23) no Hoare annotation was computed. [2021-10-16 02:50:59,331 INFO L860 garLoopResultBuilder]: At program point L77(lines 62 78) the Hoare annotation is: true [2021-10-16 02:50:59,331 INFO L857 garLoopResultBuilder]: For program point L73(line 73) no Hoare annotation was computed. [2021-10-16 02:50:59,331 INFO L857 garLoopResultBuilder]: For program point L40(lines 40 41) no Hoare annotation was computed. [2021-10-16 02:50:59,332 INFO L857 garLoopResultBuilder]: For program point L40-2(lines 40 41) no Hoare annotation was computed. [2021-10-16 02:50:59,332 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-16 02:50:59,332 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-16 02:50:59,332 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-16 02:50:59,332 INFO L857 garLoopResultBuilder]: For program point L28(lines 28 34) no Hoare annotation was computed. [2021-10-16 02:50:59,333 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 73) no Hoare annotation was computed. [2021-10-16 02:50:59,333 INFO L857 garLoopResultBuilder]: For program point L37(lines 37 38) no Hoare annotation was computed. [2021-10-16 02:50:59,333 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-16 02:50:59,333 INFO L857 garLoopResultBuilder]: For program point L29(lines 29 33) no Hoare annotation was computed. [2021-10-16 02:50:59,333 INFO L857 garLoopResultBuilder]: For program point L46(lines 46 49) no Hoare annotation was computed. [2021-10-16 02:50:59,334 INFO L857 garLoopResultBuilder]: For program point L26(lines 26 50) no Hoare annotation was computed. [2021-10-16 02:50:59,334 INFO L857 garLoopResultBuilder]: For program point L51(lines 51 55) no Hoare annotation was computed. [2021-10-16 02:50:59,334 INFO L857 garLoopResultBuilder]: For program point L51-1(lines 16 57) no Hoare annotation was computed. [2021-10-16 02:50:59,334 INFO L857 garLoopResultBuilder]: For program point L51-2(lines 51 55) no Hoare annotation was computed. [2021-10-16 02:50:59,334 INFO L857 garLoopResultBuilder]: For program point L72(lines 72 75) no Hoare annotation was computed. [2021-10-16 02:50:59,335 INFO L857 garLoopResultBuilder]: For program point L39(lines 39 43) no Hoare annotation was computed. [2021-10-16 02:50:59,342 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 02:50:59,349 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-16 02:50:59,357 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-16 02:50:59,359 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-16 02:50:59,360 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-16 02:50:59,361 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-16 02:50:59,361 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-16 02:50:59,362 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-16 02:50:59,362 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-16 02:50:59,363 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-16 02:50:59,363 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-16 02:50:59,364 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 02:50:59 BoogieIcfgContainer [2021-10-16 02:50:59,365 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 02:50:59,366 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 02:50:59,366 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 02:50:59,366 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 02:50:59,367 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:50:55" (3/4) ... [2021-10-16 02:50:59,371 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-16 02:50:59,386 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2021-10-16 02:50:59,387 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-10-16 02:50:59,387 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-16 02:50:59,388 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-16 02:50:59,420 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\exists currentRoundingMode : FloatRoundingMode :: x == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) [2021-10-16 02:50:59,421 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\exists currentRoundingMode : FloatRoundingMode :: x == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) && (\exists currentRoundingMode : FloatRoundingMode :: \result == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) [2021-10-16 02:50:59,422 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((\exists currentRoundingMode : FloatRoundingMode :: x == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) && (\exists currentRoundingMode : FloatRoundingMode :: \result == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()))) && 1bv32 == \result [2021-10-16 02:50:59,461 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2d4d63-ee65-45ec-875d-692cfa780bdd/bin/utaipan-mTDlp9Zugs/witness.graphml [2021-10-16 02:50:59,462 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 02:50:59,464 INFO L168 Benchmark]: Toolchain (without parser) took 5705.19 ms. Allocated memory was 56.6 MB in the beginning and 83.9 MB in the end (delta: 27.3 MB). Free memory was 34.4 MB in the beginning and 58.1 MB in the end (delta: -23.6 MB). Peak memory consumption was 3.5 MB. Max. memory is 16.1 GB. [2021-10-16 02:50:59,465 INFO L168 Benchmark]: CDTParser took 1.20 ms. Allocated memory is still 56.6 MB. Free memory was 37.4 MB in the beginning and 37.4 MB in the end (delta: 44.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:50:59,466 INFO L168 Benchmark]: CACSL2BoogieTranslator took 340.56 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 34.2 MB in the beginning and 52.3 MB in the end (delta: -18.0 MB). Peak memory consumption was 14.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:50:59,466 INFO L168 Benchmark]: Boogie Procedure Inliner took 93.25 ms. Allocated memory is still 69.2 MB. Free memory was 52.1 MB in the beginning and 50.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:50:59,467 INFO L168 Benchmark]: Boogie Preprocessor took 81.64 ms. Allocated memory is still 69.2 MB. Free memory was 50.5 MB in the beginning and 49.1 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:50:59,468 INFO L168 Benchmark]: RCFGBuilder took 1145.36 ms. Allocated memory is still 69.2 MB. Free memory was 48.9 MB in the beginning and 37.5 MB in the end (delta: 11.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-16 02:50:59,474 INFO L168 Benchmark]: TraceAbstraction took 3939.32 ms. Allocated memory was 69.2 MB in the beginning and 83.9 MB in the end (delta: 14.7 MB). Free memory was 36.9 MB in the beginning and 61.7 MB in the end (delta: -24.8 MB). Peak memory consumption was 10.6 MB. Max. memory is 16.1 GB. [2021-10-16 02:50:59,476 INFO L168 Benchmark]: Witness Printer took 96.16 ms. Allocated memory is still 83.9 MB. Free memory was 61.3 MB in the beginning and 58.1 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-16 02:50:59,486 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.20 ms. Allocated memory is still 56.6 MB. Free memory was 37.4 MB in the beginning and 37.4 MB in the end (delta: 44.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 340.56 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 34.2 MB in the beginning and 52.3 MB in the end (delta: -18.0 MB). Peak memory consumption was 14.1 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 93.25 ms. Allocated memory is still 69.2 MB. Free memory was 52.1 MB in the beginning and 50.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 81.64 ms. Allocated memory is still 69.2 MB. Free memory was 50.5 MB in the beginning and 49.1 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 1145.36 ms. Allocated memory is still 69.2 MB. Free memory was 48.9 MB in the beginning and 37.5 MB in the end (delta: 11.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3939.32 ms. Allocated memory was 69.2 MB in the beginning and 83.9 MB in the end (delta: 14.7 MB). Free memory was 36.9 MB in the beginning and 61.7 MB in the end (delta: -24.8 MB). Peak memory consumption was 10.6 MB. Max. memory is 16.1 GB. * Witness Printer took 96.16 ms. Allocated memory is still 83.9 MB. Free memory was 61.3 MB in the beginning and 58.1 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] * 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 - PositiveResult [Line: 73]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3821.7ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 14.9ms, AutomataDifference: 997.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 155.5ms, InitialAbstractionConstructionTime: 14.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 51 SDtfs, 23 SDslu, 49 SDs, 0 SdLazy, 38 SolverSat, 4 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 424.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 72 GetRequests, 52 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 840.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=0, InterpolantAutomatonStates: 13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 37.3ms AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 8 NumberOfFragments, 41 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 53.0ms HoareSimplificationTime, 4 FomulaSimplificationsInter, 5 FormulaSimplificationTreeSizeReductionInter, 94.6ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 59.8ms SsaConstructionTime, 329.8ms SatisfiabilityAnalysisTime, 1244.7ms InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 66 ConstructedInterpolants, 11 QuantifiedInterpolants, 224 SizeOfPredicates, 19 NumberOfNonLiveVariables, 142 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 19]: Loop Invariant [2021-10-16 02:50:59,502 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-16 02:50:59,503 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (\exists currentRoundingMode : FloatRoundingMode :: x == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) - InvariantResult [Line: 60]: Loop Invariant [2021-10-16 02:50:59,503 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-16 02:50:59,504 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-16 02:50:59,505 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-16 02:50:59,506 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: ((\exists currentRoundingMode : FloatRoundingMode :: x == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) && (\exists currentRoundingMode : FloatRoundingMode :: \result == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()))) && 1bv32 == \result - InvariantResult [Line: 16]: Loop Invariant [2021-10-16 02:50:59,507 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-16 02:50:59,507 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-16 02:50:59,507 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-16 02:50:59,514 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (\exists currentRoundingMode : FloatRoundingMode :: x == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) && (\exists currentRoundingMode : FloatRoundingMode :: \result == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) - InvariantResult [Line: 62]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-10-16 02:50:59,569 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e2d4d63-ee65-45ec-875d-692cfa780bdd/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...