./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1210.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_406ad990-4e6b-4219-9f59-ef2fe518a58a/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406ad990-4e6b-4219-9f59-ef2fe518a58a/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_406ad990-4e6b-4219-9f59-ef2fe518a58a/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406ad990-4e6b-4219-9f59-ef2fe518a58a/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1210.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406ad990-4e6b-4219-9f59-ef2fe518a58a/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_406ad990-4e6b-4219-9f59-ef2fe518a58a/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 6a2ce6cad1ff26c462bd542dafb3ac3798055daa ........................................................................................................................................................................................................................................................................................................................ 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_406ad990-4e6b-4219-9f59-ef2fe518a58a/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406ad990-4e6b-4219-9f59-ef2fe518a58a/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_406ad990-4e6b-4219-9f59-ef2fe518a58a/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406ad990-4e6b-4219-9f59-ef2fe518a58a/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1210.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406ad990-4e6b-4219-9f59-ef2fe518a58a/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_406ad990-4e6b-4219-9f59-ef2fe518a58a/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 6a2ce6cad1ff26c462bd542dafb3ac3798055daa ......................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-16 01:54:31,069 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 01:54:31,073 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 01:54:31,136 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 01:54:31,137 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 01:54:31,142 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 01:54:31,145 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 01:54:31,149 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 01:54:31,152 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 01:54:31,162 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 01:54:31,163 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 01:54:31,165 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 01:54:31,166 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 01:54:31,169 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 01:54:31,171 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 01:54:31,178 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 01:54:31,180 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 01:54:31,181 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 01:54:31,189 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 01:54:31,216 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 01:54:31,218 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 01:54:31,220 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 01:54:31,224 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 01:54:31,225 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 01:54:31,235 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 01:54:31,235 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 01:54:31,236 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 01:54:31,238 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 01:54:31,239 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 01:54:31,241 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 01:54:31,241 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 01:54:31,242 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 01:54:31,261 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 01:54:31,262 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 01:54:31,264 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 01:54:31,264 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 01:54:31,265 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 01:54:31,266 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 01:54:31,266 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 01:54:31,267 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 01:54:31,268 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 01:54:31,269 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406ad990-4e6b-4219-9f59-ef2fe518a58a/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-16 01:54:31,318 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 01:54:31,319 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 01:54:31,320 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 01:54:31,320 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 01:54:31,320 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 01:54:31,320 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 01:54:31,321 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-16 01:54:31,321 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 01:54:31,321 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 01:54:31,321 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-16 01:54:31,321 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-16 01:54:31,322 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 01:54:31,322 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-16 01:54:31,322 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-16 01:54:31,322 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-16 01:54:31,323 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 01:54:31,324 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 01:54:31,324 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 01:54:31,324 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 01:54:31,324 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 01:54:31,324 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 01:54:31,325 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 01:54:31,325 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 01:54:31,325 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 01:54:31,325 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 01:54:31,325 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 01:54:31,326 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 01:54:31,326 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 01:54:31,326 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 01:54:31,326 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 01:54:31,327 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 01:54:31,327 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 01:54:31,327 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 01:54:31,327 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 01:54:31,328 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-16 01:54:31,328 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-16 01:54:31,328 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 01:54:31,328 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 01:54:31,328 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 01:54:31,329 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_406ad990-4e6b-4219-9f59-ef2fe518a58a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406ad990-4e6b-4219-9f59-ef2fe518a58a/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6a2ce6cad1ff26c462bd542dafb3ac3798055daa [2021-10-16 01:54:31,599 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 01:54:31,666 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 01:54:31,670 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 01:54:31,671 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 01:54:31,672 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 01:54:31,673 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406ad990-4e6b-4219-9f59-ef2fe518a58a/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/float-newlib/float_req_bl_1210.c [2021-10-16 01:54:31,763 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406ad990-4e6b-4219-9f59-ef2fe518a58a/bin/utaipan-mTDlp9Zugs/data/d74ed0d83/3e61a1fd30de438cbb898c48abd4a7b6/FLAG1afcae755 [2021-10-16 01:54:32,358 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 01:54:32,365 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406ad990-4e6b-4219-9f59-ef2fe518a58a/sv-benchmarks/c/float-newlib/float_req_bl_1210.c [2021-10-16 01:54:32,378 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406ad990-4e6b-4219-9f59-ef2fe518a58a/bin/utaipan-mTDlp9Zugs/data/d74ed0d83/3e61a1fd30de438cbb898c48abd4a7b6/FLAG1afcae755 [2021-10-16 01:54:32,668 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406ad990-4e6b-4219-9f59-ef2fe518a58a/bin/utaipan-mTDlp9Zugs/data/d74ed0d83/3e61a1fd30de438cbb898c48abd4a7b6 [2021-10-16 01:54:32,670 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 01:54:32,672 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 01:54:32,688 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 01:54:32,688 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 01:54:32,692 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 01:54:32,692 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:54:32" (1/1) ... [2021-10-16 01:54:32,694 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2604c52e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:54:32, skipping insertion in model container [2021-10-16 01:54:32,694 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:54:32" (1/1) ... [2021-10-16 01:54:32,705 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 01:54:32,739 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 01:54:33,047 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_406ad990-4e6b-4219-9f59-ef2fe518a58a/sv-benchmarks/c/float-newlib/float_req_bl_1210.c[2159,2172] [2021-10-16 01:54:33,054 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 01:54:33,069 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 01:54:33,113 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_406ad990-4e6b-4219-9f59-ef2fe518a58a/sv-benchmarks/c/float-newlib/float_req_bl_1210.c[2159,2172] [2021-10-16 01:54:33,117 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 01:54:33,140 INFO L208 MainTranslator]: Completed translation [2021-10-16 01:54:33,140 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:54:33 WrapperNode [2021-10-16 01:54:33,140 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 01:54:33,142 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 01:54:33,142 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 01:54:33,142 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 01:54:33,150 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:54:33" (1/1) ... [2021-10-16 01:54:33,171 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:54:33" (1/1) ... [2021-10-16 01:54:33,207 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 01:54:33,208 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 01:54:33,209 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 01:54:33,210 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 01:54:33,217 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:54:33" (1/1) ... [2021-10-16 01:54:33,218 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:54:33" (1/1) ... [2021-10-16 01:54:33,231 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:54:33" (1/1) ... [2021-10-16 01:54:33,232 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:54:33" (1/1) ... [2021-10-16 01:54:33,244 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:54:33" (1/1) ... [2021-10-16 01:54:33,255 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:54:33" (1/1) ... [2021-10-16 01:54:33,263 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:54:33" (1/1) ... [2021-10-16 01:54:33,270 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 01:54:33,274 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 01:54:33,274 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 01:54:33,274 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 01:54:33,275 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:54:33" (1/1) ... [2021-10-16 01:54:33,283 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 01:54:33,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406ad990-4e6b-4219-9f59-ef2fe518a58a/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 01:54:33,313 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406ad990-4e6b-4219-9f59-ef2fe518a58a/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 01:54:33,346 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406ad990-4e6b-4219-9f59-ef2fe518a58a/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 01:54:33,371 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-16 01:54:33,372 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 01:54:33,374 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-10-16 01:54:33,374 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-16 01:54:33,374 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-10-16 01:54:33,374 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 01:54:33,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 01:54:33,375 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-16 01:54:33,376 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-16 01:54:33,924 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 01:54:33,925 INFO L299 CfgBuilder]: Removed 24 assume(true) statements. [2021-10-16 01:54:33,928 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:54:33 BoogieIcfgContainer [2021-10-16 01:54:33,929 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 01:54:33,931 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 01:54:33,932 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 01:54:33,936 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 01:54:33,936 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 01:54:32" (1/3) ... [2021-10-16 01:54:33,938 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69defb20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:54:33, skipping insertion in model container [2021-10-16 01:54:33,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:54:33" (2/3) ... [2021-10-16 01:54:33,939 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69defb20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:54:33, skipping insertion in model container [2021-10-16 01:54:33,939 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:54:33" (3/3) ... [2021-10-16 01:54:33,945 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1210.c [2021-10-16 01:54:33,952 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 01:54:33,953 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-16 01:54:34,023 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 01:54:34,033 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 01:54:34,033 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-16 01:54:34,052 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 27 states have (on average 1.7037037037037037) internal successors, (46), 28 states have internal predecessors, (46), 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 01:54:34,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-16 01:54:34,073 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:54:34,074 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 01:54:34,075 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 01:54:34,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:54:34,083 INFO L82 PathProgramCache]: Analyzing trace with hash 1956388534, now seen corresponding path program 1 times [2021-10-16 01:54:34,095 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 01:54:34,096 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927162743] [2021-10-16 01:54:34,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:54:34,097 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 01:54:34,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:54:34,300 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 01:54:34,300 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 01:54:34,301 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927162743] [2021-10-16 01:54:34,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927162743] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 01:54:34,302 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 01:54:34,302 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-16 01:54:34,304 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911377847] [2021-10-16 01:54:34,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-16 01:54:34,310 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 01:54:34,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-16 01:54:34,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 01:54:34,332 INFO L87 Difference]: Start difference. First operand has 29 states, 27 states have (on average 1.7037037037037037) internal successors, (46), 28 states have internal predecessors, (46), 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 01:54:34,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 01:54:34,353 INFO L93 Difference]: Finished difference Result 57 states and 91 transitions. [2021-10-16 01:54:34,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-16 01:54:34,356 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 01:54:34,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 01:54:34,365 INFO L225 Difference]: With dead ends: 57 [2021-10-16 01:54:34,366 INFO L226 Difference]: Without dead ends: 27 [2021-10-16 01:54:34,369 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 01:54:34,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-10-16 01:54:34,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-10-16 01:54:34,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 26 states have internal predecessors, (29), 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 01:54:34,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2021-10-16 01:54:34,407 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 10 [2021-10-16 01:54:34,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 01:54:34,408 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2021-10-16 01:54:34,408 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 01:54:34,409 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2021-10-16 01:54:34,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-16 01:54:34,410 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:54:34,410 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 01:54:34,410 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-16 01:54:34,411 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 01:54:34,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:54:34,414 INFO L82 PathProgramCache]: Analyzing trace with hash 1481621589, now seen corresponding path program 1 times [2021-10-16 01:54:34,415 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 01:54:34,415 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400370814] [2021-10-16 01:54:34,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:54:34,416 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 01:54:34,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-16 01:54:34,509 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-16 01:54:34,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-16 01:54:34,600 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-16 01:54:34,602 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-16 01:54:34,604 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 01:54:34,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-16 01:54:34,614 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 01:54:34,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 01:54:34 BoogieIcfgContainer [2021-10-16 01:54:34,672 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 01:54:34,673 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 01:54:34,674 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 01:54:34,674 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 01:54:34,675 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:54:33" (3/4) ... [2021-10-16 01:54:34,678 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-16 01:54:34,678 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 01:54:34,702 INFO L168 Benchmark]: Toolchain (without parser) took 2008.15 ms. Allocated memory is still 115.3 MB. Free memory was 79.9 MB in the beginning and 41.5 MB in the end (delta: 38.5 MB). Peak memory consumption was 34.7 MB. Max. memory is 16.1 GB. [2021-10-16 01:54:34,703 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 115.3 MB. Free memory was 86.1 MB in the beginning and 86.1 MB in the end (delta: 25.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 01:54:34,705 INFO L168 Benchmark]: CACSL2BoogieTranslator took 452.91 ms. Allocated memory is still 115.3 MB. Free memory was 79.7 MB in the beginning and 89.1 MB in the end (delta: -9.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-16 01:54:34,708 INFO L168 Benchmark]: Boogie Procedure Inliner took 65.70 ms. Allocated memory is still 115.3 MB. Free memory was 88.6 MB in the beginning and 87.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 01:54:34,712 INFO L168 Benchmark]: Boogie Preprocessor took 64.52 ms. Allocated memory is still 115.3 MB. Free memory was 87.0 MB in the beginning and 85.5 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 01:54:34,714 INFO L168 Benchmark]: RCFGBuilder took 655.54 ms. Allocated memory is still 115.3 MB. Free memory was 85.5 MB in the beginning and 68.2 MB in the end (delta: 17.3 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2021-10-16 01:54:34,715 INFO L168 Benchmark]: TraceAbstraction took 740.65 ms. Allocated memory is still 115.3 MB. Free memory was 67.6 MB in the beginning and 41.5 MB in the end (delta: 26.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. [2021-10-16 01:54:34,716 INFO L168 Benchmark]: Witness Printer took 5.83 ms. Allocated memory is still 115.3 MB. Free memory is still 41.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 01:54:34,723 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 115.3 MB. Free memory was 86.1 MB in the beginning and 86.1 MB in the end (delta: 25.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 452.91 ms. Allocated memory is still 115.3 MB. Free memory was 79.7 MB in the beginning and 89.1 MB in the end (delta: -9.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 65.70 ms. Allocated memory is still 115.3 MB. Free memory was 88.6 MB in the beginning and 87.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 64.52 ms. Allocated memory is still 115.3 MB. Free memory was 87.0 MB in the beginning and 85.5 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 655.54 ms. Allocated memory is still 115.3 MB. Free memory was 85.5 MB in the beginning and 68.2 MB in the end (delta: 17.3 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 740.65 ms. Allocated memory is still 115.3 MB. Free memory was 67.6 MB in the beginning and 41.5 MB in the end (delta: 26.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. * Witness Printer took 5.83 ms. Allocated memory is still 115.3 MB. Free memory is still 41.5 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: 88]: 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 75, overapproximation of someBinaryArithmeticFLOAToperation at line 82, overapproximation of bitwiseAnd at line 28. Possible FailurePath: [L13] static const float one_modf = 1.0; [L82] float x = 0.0f / 0.0f; [L83] float iptr; [L16] __int32_t i0, j0; [L17] __uint32_t i; VAL [one_modf=1] [L19] ieee_float_shape_type gf_u; [L20] gf_u.value = (x) [L21] EXPR gf_u.word [L21] (i0) = gf_u.word [L23] j0 = ((i0 >> 23) & 0xff) - 0x7f VAL [one_modf=1] [L24] COND TRUE j0 < 23 VAL [one_modf=1] [L25] COND TRUE j0 < 0 VAL [one_modf=1] [L27] ieee_float_shape_type sf_u; [L28] sf_u.word = (i0 & 0x80000000) [L29] EXPR sf_u.value [L29] (*iptr) = sf_u.value [L31] return x; VAL [one_modf=1] [L84] float res = modf_float(x, &iptr); [L87] EXPR \read(iptr) [L75] return x != x; [L87] isnan_float(iptr) && !isnan_float(res) [L75] return x != x; [L87] isnan_float(iptr) && !isnan_float(res) VAL [one_modf=1] [L87] COND TRUE isnan_float(iptr) && !isnan_float(res) [L88] reach_error() VAL [one_modf=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 593.3ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 28.1ms, AutomataDifference: 58.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 12.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 31 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=29occurred 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: 21.9ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 20.0ms SsaConstructionTime, 117.6ms SatisfiabilityAnalysisTime, 75.2ms InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 9 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 01:54:34,795 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406ad990-4e6b-4219-9f59-ef2fe518a58a/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 01:54:37,530 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 01:54:37,533 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 01:54:37,570 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 01:54:37,571 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 01:54:37,572 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 01:54:37,574 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 01:54:37,577 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 01:54:37,580 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 01:54:37,581 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 01:54:37,583 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 01:54:37,584 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 01:54:37,585 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 01:54:37,587 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 01:54:37,588 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 01:54:37,590 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 01:54:37,592 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 01:54:37,593 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 01:54:37,596 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 01:54:37,599 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 01:54:37,601 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 01:54:37,603 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 01:54:37,605 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 01:54:37,606 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 01:54:37,611 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 01:54:37,611 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 01:54:37,612 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 01:54:37,613 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 01:54:37,614 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 01:54:37,615 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 01:54:37,616 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 01:54:37,617 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 01:54:37,618 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 01:54:37,619 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 01:54:37,629 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 01:54:37,635 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 01:54:37,640 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 01:54:37,640 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 01:54:37,640 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 01:54:37,642 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 01:54:37,643 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 01:54:37,644 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406ad990-4e6b-4219-9f59-ef2fe518a58a/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-16 01:54:37,694 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 01:54:37,694 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 01:54:37,695 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 01:54:37,695 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 01:54:37,696 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 01:54:37,696 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 01:54:37,696 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 01:54:37,696 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 01:54:37,697 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 01:54:37,698 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 01:54:37,698 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 01:54:37,698 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 01:54:37,698 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 01:54:37,699 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 01:54:37,699 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 01:54:37,700 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 01:54:37,701 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 01:54:37,701 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-16 01:54:37,701 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-16 01:54:37,701 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 01:54:37,702 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 01:54:37,702 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 01:54:37,702 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 01:54:37,702 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 01:54:37,703 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-16 01:54:37,703 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 01:54:37,703 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 01:54:37,704 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 01:54:37,704 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 01:54:37,705 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 01:54:37,705 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-16 01:54:37,705 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-16 01:54:37,705 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 01:54:37,706 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 01:54:37,706 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 01:54:37,706 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_406ad990-4e6b-4219-9f59-ef2fe518a58a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406ad990-4e6b-4219-9f59-ef2fe518a58a/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6a2ce6cad1ff26c462bd542dafb3ac3798055daa [2021-10-16 01:54:38,102 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 01:54:38,127 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 01:54:38,130 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 01:54:38,131 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 01:54:38,132 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 01:54:38,133 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406ad990-4e6b-4219-9f59-ef2fe518a58a/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/float-newlib/float_req_bl_1210.c [2021-10-16 01:54:38,200 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406ad990-4e6b-4219-9f59-ef2fe518a58a/bin/utaipan-mTDlp9Zugs/data/710f0adff/63be62db88354f148e1068b2ce0c77b5/FLAG0530af19b [2021-10-16 01:54:38,837 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 01:54:38,838 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406ad990-4e6b-4219-9f59-ef2fe518a58a/sv-benchmarks/c/float-newlib/float_req_bl_1210.c [2021-10-16 01:54:38,846 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406ad990-4e6b-4219-9f59-ef2fe518a58a/bin/utaipan-mTDlp9Zugs/data/710f0adff/63be62db88354f148e1068b2ce0c77b5/FLAG0530af19b [2021-10-16 01:54:39,197 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406ad990-4e6b-4219-9f59-ef2fe518a58a/bin/utaipan-mTDlp9Zugs/data/710f0adff/63be62db88354f148e1068b2ce0c77b5 [2021-10-16 01:54:39,200 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 01:54:39,202 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 01:54:39,206 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 01:54:39,206 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 01:54:39,211 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 01:54:39,212 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:54:39" (1/1) ... [2021-10-16 01:54:39,214 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28c2e526 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:54:39, skipping insertion in model container [2021-10-16 01:54:39,216 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:54:39" (1/1) ... [2021-10-16 01:54:39,225 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 01:54:39,252 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 01:54:39,448 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_406ad990-4e6b-4219-9f59-ef2fe518a58a/sv-benchmarks/c/float-newlib/float_req_bl_1210.c[2159,2172] [2021-10-16 01:54:39,451 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 01:54:39,465 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 01:54:39,539 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_406ad990-4e6b-4219-9f59-ef2fe518a58a/sv-benchmarks/c/float-newlib/float_req_bl_1210.c[2159,2172] [2021-10-16 01:54:39,543 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 01:54:39,569 INFO L208 MainTranslator]: Completed translation [2021-10-16 01:54:39,569 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:54:39 WrapperNode [2021-10-16 01:54:39,570 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 01:54:39,581 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 01:54:39,582 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 01:54:39,582 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 01:54:39,591 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:54:39" (1/1) ... [2021-10-16 01:54:39,620 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:54:39" (1/1) ... [2021-10-16 01:54:39,649 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 01:54:39,650 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 01:54:39,650 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 01:54:39,651 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 01:54:39,660 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:54:39" (1/1) ... [2021-10-16 01:54:39,661 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:54:39" (1/1) ... [2021-10-16 01:54:39,666 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:54:39" (1/1) ... [2021-10-16 01:54:39,667 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:54:39" (1/1) ... [2021-10-16 01:54:39,679 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:54:39" (1/1) ... [2021-10-16 01:54:39,685 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:54:39" (1/1) ... [2021-10-16 01:54:39,689 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:54:39" (1/1) ... [2021-10-16 01:54:39,694 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 01:54:39,695 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 01:54:39,695 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 01:54:39,695 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 01:54:39,696 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:54:39" (1/1) ... [2021-10-16 01:54:39,705 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 01:54:39,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406ad990-4e6b-4219-9f59-ef2fe518a58a/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 01:54:39,737 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406ad990-4e6b-4219-9f59-ef2fe518a58a/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 01:54:39,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406ad990-4e6b-4219-9f59-ef2fe518a58a/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 01:54:39,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-16 01:54:39,791 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 01:54:39,791 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2021-10-16 01:54:39,792 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-16 01:54:39,792 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 01:54:39,792 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 01:54:39,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2021-10-16 01:54:39,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-16 01:54:39,795 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-16 01:54:40,462 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 01:54:40,462 INFO L299 CfgBuilder]: Removed 24 assume(true) statements. [2021-10-16 01:54:40,464 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:54:40 BoogieIcfgContainer [2021-10-16 01:54:40,464 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 01:54:40,466 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 01:54:40,467 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 01:54:40,470 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 01:54:40,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 01:54:39" (1/3) ... [2021-10-16 01:54:40,471 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ffbda6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:54:40, skipping insertion in model container [2021-10-16 01:54:40,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:54:39" (2/3) ... [2021-10-16 01:54:40,472 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ffbda6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:54:40, skipping insertion in model container [2021-10-16 01:54:40,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:54:40" (3/3) ... [2021-10-16 01:54:40,474 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1210.c [2021-10-16 01:54:40,481 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 01:54:40,482 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-16 01:54:40,556 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 01:54:40,570 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 01:54:40,570 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-16 01:54:40,589 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 32 states have (on average 1.625) internal successors, (52), 33 states have internal predecessors, (52), 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 01:54:40,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-16 01:54:40,610 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:54:40,611 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 01:54:40,612 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 01:54:40,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:54:40,619 INFO L82 PathProgramCache]: Analyzing trace with hash -556426464, now seen corresponding path program 1 times [2021-10-16 01:54:40,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 01:54:40,637 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [358178131] [2021-10-16 01:54:40,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:54:40,638 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 01:54:40,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406ad990-4e6b-4219-9f59-ef2fe518a58a/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 01:54:40,643 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406ad990-4e6b-4219-9f59-ef2fe518a58a/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 01:54:40,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406ad990-4e6b-4219-9f59-ef2fe518a58a/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-16 01:54:40,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:54:40,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-16 01:54:40,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 01:54:40,988 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 01:54:40,989 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 01:54:41,140 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 01:54:41,141 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 01:54:41,141 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [358178131] [2021-10-16 01:54:41,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [358178131] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 01:54:41,142 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 01:54:41,143 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-16 01:54:41,145 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724138104] [2021-10-16 01:54:41,150 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-16 01:54:41,163 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 01:54:41,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-16 01:54:41,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 01:54:41,189 INFO L87 Difference]: Start difference. First operand has 34 states, 32 states have (on average 1.625) internal successors, (52), 33 states have internal predecessors, (52), 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 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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 01:54:41,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 01:54:41,207 INFO L93 Difference]: Finished difference Result 66 states and 102 transitions. [2021-10-16 01:54:41,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-16 01:54:41,209 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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 13 [2021-10-16 01:54:41,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 01:54:41,218 INFO L225 Difference]: With dead ends: 66 [2021-10-16 01:54:41,219 INFO L226 Difference]: Without dead ends: 31 [2021-10-16 01:54:41,221 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 24 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 01:54:41,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-10-16 01:54:41,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2021-10-16 01:54:41,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.1333333333333333) internal successors, (34), 30 states have internal predecessors, (34), 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 01:54:41,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2021-10-16 01:54:41,255 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 13 [2021-10-16 01:54:41,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 01:54:41,256 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2021-10-16 01:54:41,256 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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 01:54:41,257 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2021-10-16 01:54:41,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-16 01:54:41,258 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:54:41,258 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 01:54:41,274 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406ad990-4e6b-4219-9f59-ef2fe518a58a/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-10-16 01:54:41,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406ad990-4e6b-4219-9f59-ef2fe518a58a/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 01:54:41,468 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 01:54:41,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:54:41,470 INFO L82 PathProgramCache]: Analyzing trace with hash -56818241, now seen corresponding path program 1 times [2021-10-16 01:54:41,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 01:54:41,471 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [746831839] [2021-10-16 01:54:41,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:54:41,472 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 01:54:41,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406ad990-4e6b-4219-9f59-ef2fe518a58a/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 01:54:41,473 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406ad990-4e6b-4219-9f59-ef2fe518a58a/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 01:54:41,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406ad990-4e6b-4219-9f59-ef2fe518a58a/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-16 01:54:41,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:54:41,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-16 01:54:41,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 01:54:41,948 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 01:54:41,949 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 01:54:42,192 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 01:54:42,192 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 01:54:42,192 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [746831839] [2021-10-16 01:54:42,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [746831839] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 01:54:42,193 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 01:54:42,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-10-16 01:54:42,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020259123] [2021-10-16 01:54:42,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-16 01:54:42,195 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 01:54:42,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-16 01:54:42,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-16 01:54:42,196 INFO L87 Difference]: Start difference. First operand 31 states and 34 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 01:54:43,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 01:54:43,255 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2021-10-16 01:54:43,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-16 01:54:43,258 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 01:54:43,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 01:54:43,259 INFO L225 Difference]: With dead ends: 38 [2021-10-16 01:54:43,260 INFO L226 Difference]: Without dead ends: 18 [2021-10-16 01:54:43,261 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 398.1ms TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-10-16 01:54:43,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-10-16 01:54:43,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-10-16 01:54:43,266 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 01:54:43,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2021-10-16 01:54:43,267 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 15 [2021-10-16 01:54:43,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 01:54:43,268 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2021-10-16 01:54:43,268 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 01:54:43,268 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2021-10-16 01:54:43,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-16 01:54:43,269 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:54:43,269 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 01:54:43,291 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406ad990-4e6b-4219-9f59-ef2fe518a58a/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-16 01:54:43,484 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406ad990-4e6b-4219-9f59-ef2fe518a58a/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 01:54:43,485 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 01:54:43,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:54:43,486 INFO L82 PathProgramCache]: Analyzing trace with hash 1951048762, now seen corresponding path program 1 times [2021-10-16 01:54:43,487 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 01:54:43,487 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1185109208] [2021-10-16 01:54:43,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:54:43,488 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 01:54:43,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406ad990-4e6b-4219-9f59-ef2fe518a58a/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 01:54:43,500 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406ad990-4e6b-4219-9f59-ef2fe518a58a/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 01:54:43,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406ad990-4e6b-4219-9f59-ef2fe518a58a/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-16 01:54:43,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:54:43,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 01:54:43,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 01:54:43,809 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 01:54:43,810 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 01:54:43,852 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 01:54:43,852 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 01:54:43,852 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1185109208] [2021-10-16 01:54:43,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1185109208] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 01:54:43,853 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 01:54:43,853 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 01:54:43,853 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590448516] [2021-10-16 01:54:43,854 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 01:54:43,854 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 01:54:43,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 01:54:43,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 01:54:43,856 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 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 01:54:43,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 01:54:43,885 INFO L93 Difference]: Finished difference Result 21 states and 20 transitions. [2021-10-16 01:54:43,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 01:54:43,886 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 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) Word has length 16 [2021-10-16 01:54:43,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 01:54:43,886 INFO L225 Difference]: With dead ends: 21 [2021-10-16 01:54:43,886 INFO L226 Difference]: Without dead ends: 18 [2021-10-16 01:54:43,887 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 01:54:43,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-10-16 01:54:43,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-10-16 01:54:43,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.0) internal successors, (17), 17 states have internal predecessors, (17), 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 01:54:43,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 17 transitions. [2021-10-16 01:54:43,891 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 17 transitions. Word has length 16 [2021-10-16 01:54:43,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 01:54:43,891 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 17 transitions. [2021-10-16 01:54:43,891 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 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 01:54:43,892 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 17 transitions. [2021-10-16 01:54:43,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-16 01:54:43,892 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:54:43,893 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 01:54:43,909 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406ad990-4e6b-4219-9f59-ef2fe518a58a/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-16 01:54:44,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406ad990-4e6b-4219-9f59-ef2fe518a58a/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 01:54:44,100 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 01:54:44,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:54:44,101 INFO L82 PathProgramCache]: Analyzing trace with hash 352844637, now seen corresponding path program 1 times [2021-10-16 01:54:44,102 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 01:54:44,102 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1294695624] [2021-10-16 01:54:44,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:54:44,102 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 01:54:44,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406ad990-4e6b-4219-9f59-ef2fe518a58a/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 01:54:44,104 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406ad990-4e6b-4219-9f59-ef2fe518a58a/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 01:54:44,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406ad990-4e6b-4219-9f59-ef2fe518a58a/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-16 01:54:44,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-16 01:54:44,356 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-16 01:54:44,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-16 01:54:44,632 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-16 01:54:44,632 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-16 01:54:44,633 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 01:54:44,668 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406ad990-4e6b-4219-9f59-ef2fe518a58a/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-16 01:54:44,836 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406ad990-4e6b-4219-9f59-ef2fe518a58a/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 01:54:44,843 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 01:54:44,911 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 01:54:44 BoogieIcfgContainer [2021-10-16 01:54:44,912 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 01:54:44,913 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 01:54:44,913 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 01:54:44,914 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 01:54:44,914 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:54:40" (3/4) ... [2021-10-16 01:54:44,916 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-16 01:54:45,005 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406ad990-4e6b-4219-9f59-ef2fe518a58a/bin/utaipan-mTDlp9Zugs/witness.graphml [2021-10-16 01:54:45,005 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 01:54:45,007 INFO L168 Benchmark]: Toolchain (without parser) took 5804.40 ms. Allocated memory was 88.1 MB in the beginning and 117.4 MB in the end (delta: 29.4 MB). Free memory was 52.7 MB in the beginning and 76.5 MB in the end (delta: -23.7 MB). Peak memory consumption was 7.1 MB. Max. memory is 16.1 GB. [2021-10-16 01:54:45,008 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 88.1 MB. Free memory was 69.0 MB in the beginning and 68.9 MB in the end (delta: 72.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 01:54:45,008 INFO L168 Benchmark]: CACSL2BoogieTranslator took 364.55 ms. Allocated memory is still 88.1 MB. Free memory was 52.5 MB in the beginning and 71.9 MB in the end (delta: -19.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 16.1 GB. [2021-10-16 01:54:45,009 INFO L168 Benchmark]: Boogie Procedure Inliner took 67.98 ms. Allocated memory is still 88.1 MB. Free memory was 71.7 MB in the beginning and 70.0 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 01:54:45,009 INFO L168 Benchmark]: Boogie Preprocessor took 43.95 ms. Allocated memory is still 88.1 MB. Free memory was 70.0 MB in the beginning and 68.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 01:54:45,010 INFO L168 Benchmark]: RCFGBuilder took 769.59 ms. Allocated memory is still 88.1 MB. Free memory was 68.0 MB in the beginning and 53.3 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-16 01:54:45,011 INFO L168 Benchmark]: TraceAbstraction took 4445.26 ms. Allocated memory was 88.1 MB in the beginning and 117.4 MB in the end (delta: 29.4 MB). Free memory was 52.9 MB in the beginning and 78.9 MB in the end (delta: -26.0 MB). Peak memory consumption was 5.0 MB. Max. memory is 16.1 GB. [2021-10-16 01:54:45,011 INFO L168 Benchmark]: Witness Printer took 92.02 ms. Allocated memory is still 117.4 MB. Free memory was 78.9 MB in the beginning and 76.5 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 01:54:45,015 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 88.1 MB. Free memory was 69.0 MB in the beginning and 68.9 MB in the end (delta: 72.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 364.55 ms. Allocated memory is still 88.1 MB. Free memory was 52.5 MB in the beginning and 71.9 MB in the end (delta: -19.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 67.98 ms. Allocated memory is still 88.1 MB. Free memory was 71.7 MB in the beginning and 70.0 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 43.95 ms. Allocated memory is still 88.1 MB. Free memory was 70.0 MB in the beginning and 68.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 769.59 ms. Allocated memory is still 88.1 MB. Free memory was 68.0 MB in the beginning and 53.3 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4445.26 ms. Allocated memory was 88.1 MB in the beginning and 117.4 MB in the end (delta: 29.4 MB). Free memory was 52.9 MB in the beginning and 78.9 MB in the end (delta: -26.0 MB). Peak memory consumption was 5.0 MB. Max. memory is 16.1 GB. * Witness Printer took 92.02 ms. Allocated memory is still 117.4 MB. Free memory was 78.9 MB in the beginning and 76.5 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 88]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L13] static const float one_modf = 1.0; VAL [one_modf=1.0] [L82] float x = 0.0f / 0.0f; [L83] float iptr; [L16] __int32_t i0, j0; [L17] __uint32_t i; VAL [one_modf=1.0] [L19] ieee_float_shape_type gf_u; [L20] gf_u.value = (x) [L21] EXPR gf_u.word [L21] (i0) = gf_u.word [L23] j0 = ((i0 >> 23) & 0xff) - 0x7f VAL [one_modf=1.0] [L24] COND FALSE !(j0 < 23) [L58] __uint32_t ix; [L59] *iptr = x * one_modf VAL [one_modf=1.0] [L61] ieee_float_shape_type gf_u; [L62] gf_u.value = (x) [L63] EXPR gf_u.word [L63] (ix) = gf_u.word [L66] ieee_float_shape_type sf_u; [L67] sf_u.word = (ix & 0x80000000) [L68] EXPR sf_u.value [L68] (x) = sf_u.value [L70] return x; VAL [one_modf=1.0] [L84] float res = modf_float(x, &iptr); [L87] EXPR \read(iptr) [L75] return x != x; VAL [one_modf=1.0] [L87] isnan_float(iptr) && !isnan_float(res) [L75] return x != x; VAL [one_modf=1.0] [L87] isnan_float(iptr) && !isnan_float(res) VAL [one_modf=1.0] [L87] COND TRUE isnan_float(iptr) && !isnan_float(res) [L88] reach_error() VAL [one_modf=1.0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 34 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4287.9ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 27.7ms, AutomataDifference: 1155.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 14.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 69 SDtfs, 53 SDslu, 26 SDs, 0 SdLazy, 16 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 856.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 85 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 401.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred in iteration=0, InterpolantAutomatonStates: 11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 29.2ms AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 91.3ms SsaConstructionTime, 484.6ms SatisfiabilityAnalysisTime, 976.8ms InterpolantComputationTime, 61 NumberOfCodeBlocks, 61 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 82 ConstructedInterpolants, 5 QuantifiedInterpolants, 179 SizeOfPredicates, 8 NumberOfNonLiveVariables, 198 ConjunctsInSsa, 11 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 RESULT: Ultimate proved your program to be incorrect! [2021-10-16 01:54:45,079 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_406ad990-4e6b-4219-9f59-ef2fe518a58a/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...