./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1122b.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db2a506c-2edc-4a13-99eb-d2efebdaca6c/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db2a506c-2edc-4a13-99eb-d2efebdaca6c/bin/utaipan-9zjyvhn0QE/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db2a506c-2edc-4a13-99eb-d2efebdaca6c/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db2a506c-2edc-4a13-99eb-d2efebdaca6c/bin/utaipan-9zjyvhn0QE/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1122b.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db2a506c-2edc-4a13-99eb-d2efebdaca6c/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db2a506c-2edc-4a13-99eb-d2efebdaca6c/bin/utaipan-9zjyvhn0QE --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 fdbce805aa8b4a64f30ef9c8f5d71e1c7a99dc3654784a3c18b27b22409bd2e9 ........................................................................................................................................................................................................................................................................................................................... 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_db2a506c-2edc-4a13-99eb-d2efebdaca6c/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db2a506c-2edc-4a13-99eb-d2efebdaca6c/bin/utaipan-9zjyvhn0QE/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db2a506c-2edc-4a13-99eb-d2efebdaca6c/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db2a506c-2edc-4a13-99eb-d2efebdaca6c/bin/utaipan-9zjyvhn0QE/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1122b.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db2a506c-2edc-4a13-99eb-d2efebdaca6c/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db2a506c-2edc-4a13-99eb-d2efebdaca6c/bin/utaipan-9zjyvhn0QE --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 fdbce805aa8b4a64f30ef9c8f5d71e1c7a99dc3654784a3c18b27b22409bd2e9 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-24 11:10:43,070 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 11:10:43,073 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 11:10:43,123 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 11:10:43,124 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 11:10:43,127 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 11:10:43,129 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 11:10:43,132 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 11:10:43,135 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 11:10:43,140 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 11:10:43,141 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 11:10:43,143 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 11:10:43,143 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 11:10:43,146 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 11:10:43,148 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 11:10:43,153 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 11:10:43,154 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 11:10:43,155 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 11:10:43,157 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 11:10:43,165 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 11:10:43,166 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 11:10:43,168 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 11:10:43,170 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 11:10:43,171 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 11:10:43,180 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 11:10:43,180 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 11:10:43,181 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 11:10:43,183 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 11:10:43,183 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 11:10:43,185 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 11:10:43,185 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 11:10:43,186 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 11:10:43,188 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 11:10:43,189 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 11:10:43,190 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 11:10:43,190 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 11:10:43,191 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 11:10:43,191 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 11:10:43,192 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 11:10:43,192 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 11:10:43,193 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 11:10:43,194 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db2a506c-2edc-4a13-99eb-d2efebdaca6c/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-24 11:10:43,232 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 11:10:43,233 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 11:10:43,234 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 11:10:43,234 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 11:10:43,235 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 11:10:43,235 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 11:10:43,235 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-24 11:10:43,235 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 11:10:43,236 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 11:10:43,236 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-24 11:10:43,237 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-24 11:10:43,237 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 11:10:43,237 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-24 11:10:43,237 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-24 11:10:43,238 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-24 11:10:43,238 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 11:10:43,239 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 11:10:43,239 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-24 11:10:43,239 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 11:10:43,239 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 11:10:43,239 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-24 11:10:43,240 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 11:10:43,240 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-24 11:10:43,240 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 11:10:43,240 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 11:10:43,241 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-24 11:10:43,241 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 11:10:43,241 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-24 11:10:43,241 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 11:10:43,243 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 11:10:43,243 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 11:10:43,243 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 11:10:43,243 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 11:10:43,244 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-24 11:10:43,244 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-24 11:10:43,244 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-24 11:10:43,244 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-24 11:10:43,245 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 11:10:43,245 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 11:10:43,245 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_db2a506c-2edc-4a13-99eb-d2efebdaca6c/bin/utaipan-9zjyvhn0QE/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db2a506c-2edc-4a13-99eb-d2efebdaca6c/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fdbce805aa8b4a64f30ef9c8f5d71e1c7a99dc3654784a3c18b27b22409bd2e9 [2021-10-24 11:10:43,549 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 11:10:43,569 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 11:10:43,572 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 11:10:43,573 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 11:10:43,574 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 11:10:43,575 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db2a506c-2edc-4a13-99eb-d2efebdaca6c/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/float-newlib/double_req_bl_1122b.c [2021-10-24 11:10:43,638 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db2a506c-2edc-4a13-99eb-d2efebdaca6c/bin/utaipan-9zjyvhn0QE/data/473698b81/3cf347cebe6844f0bac5f8edc48e171f/FLAGf2090ca7e [2021-10-24 11:10:44,061 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 11:10:44,061 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db2a506c-2edc-4a13-99eb-d2efebdaca6c/sv-benchmarks/c/float-newlib/double_req_bl_1122b.c [2021-10-24 11:10:44,068 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db2a506c-2edc-4a13-99eb-d2efebdaca6c/bin/utaipan-9zjyvhn0QE/data/473698b81/3cf347cebe6844f0bac5f8edc48e171f/FLAGf2090ca7e [2021-10-24 11:10:44,082 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db2a506c-2edc-4a13-99eb-d2efebdaca6c/bin/utaipan-9zjyvhn0QE/data/473698b81/3cf347cebe6844f0bac5f8edc48e171f [2021-10-24 11:10:44,085 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 11:10:44,086 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 11:10:44,088 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 11:10:44,088 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 11:10:44,094 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 11:10:44,095 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:10:44" (1/1) ... [2021-10-24 11:10:44,096 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3235a1c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:10:44, skipping insertion in model container [2021-10-24 11:10:44,097 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:10:44" (1/1) ... [2021-10-24 11:10:44,104 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 11:10:44,144 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 11:10:44,417 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_db2a506c-2edc-4a13-99eb-d2efebdaca6c/sv-benchmarks/c/float-newlib/double_req_bl_1122b.c[3907,3920] [2021-10-24 11:10:44,420 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 11:10:44,427 INFO L203 MainTranslator]: Completed pre-run [2021-10-24 11:10:44,495 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_db2a506c-2edc-4a13-99eb-d2efebdaca6c/sv-benchmarks/c/float-newlib/double_req_bl_1122b.c[3907,3920] [2021-10-24 11:10:44,510 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 11:10:44,522 INFO L208 MainTranslator]: Completed translation [2021-10-24 11:10:44,522 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:10:44 WrapperNode [2021-10-24 11:10:44,522 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 11:10:44,523 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-24 11:10:44,523 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-24 11:10:44,524 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-24 11:10:44,530 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:10:44" (1/1) ... [2021-10-24 11:10:44,540 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:10:44" (1/1) ... [2021-10-24 11:10:44,571 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-24 11:10:44,572 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-24 11:10:44,572 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-24 11:10:44,572 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-24 11:10:44,582 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:10:44" (1/1) ... [2021-10-24 11:10:44,582 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:10:44" (1/1) ... [2021-10-24 11:10:44,596 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:10:44" (1/1) ... [2021-10-24 11:10:44,597 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:10:44" (1/1) ... [2021-10-24 11:10:44,607 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:10:44" (1/1) ... [2021-10-24 11:10:44,628 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:10:44" (1/1) ... [2021-10-24 11:10:44,635 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:10:44" (1/1) ... [2021-10-24 11:10:44,644 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-24 11:10:44,652 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-24 11:10:44,652 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-24 11:10:44,652 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-24 11:10:44,653 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:10:44" (1/1) ... [2021-10-24 11:10:44,664 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 11:10:44,674 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db2a506c-2edc-4a13-99eb-d2efebdaca6c/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 11:10:44,686 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db2a506c-2edc-4a13-99eb-d2efebdaca6c/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-24 11:10:44,713 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db2a506c-2edc-4a13-99eb-d2efebdaca6c/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-24 11:10:44,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-24 11:10:44,736 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-24 11:10:44,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-24 11:10:44,738 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-10-24 11:10:44,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-10-24 11:10:44,738 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-24 11:10:44,739 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-24 11:10:44,739 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-24 11:10:44,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2021-10-24 11:10:44,739 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-24 11:10:45,559 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-24 11:10:45,559 INFO L299 CfgBuilder]: Removed 22 assume(true) statements. [2021-10-24 11:10:45,562 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:10:45 BoogieIcfgContainer [2021-10-24 11:10:45,562 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-24 11:10:45,564 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-24 11:10:45,564 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-24 11:10:45,572 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-24 11:10:45,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 11:10:44" (1/3) ... [2021-10-24 11:10:45,573 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@654382ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:10:45, skipping insertion in model container [2021-10-24 11:10:45,574 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:10:44" (2/3) ... [2021-10-24 11:10:45,574 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@654382ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:10:45, skipping insertion in model container [2021-10-24 11:10:45,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:10:45" (3/3) ... [2021-10-24 11:10:45,578 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1122b.c [2021-10-24 11:10:45,583 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-24 11:10:45,597 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-24 11:10:45,674 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-24 11:10:45,681 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=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 [2021-10-24 11:10:45,681 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-24 11:10:45,718 INFO L276 IsEmpty]: Start isEmpty. Operand has 39 states, 37 states have (on average 1.7837837837837838) internal successors, (66), 38 states have internal predecessors, (66), 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) [2021-10-24 11:10:45,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-24 11:10:45,723 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 11:10:45,724 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 11:10:45,724 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 11:10:45,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 11:10:45,729 INFO L82 PathProgramCache]: Analyzing trace with hash -159335407, now seen corresponding path program 1 times [2021-10-24 11:10:45,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 11:10:45,742 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702132719] [2021-10-24 11:10:45,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:10:45,743 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 11:10:45,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:10:45,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:10:45,922 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 11:10:45,923 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702132719] [2021-10-24 11:10:45,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702132719] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 11:10:45,924 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 11:10:45,924 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-24 11:10:45,926 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089616913] [2021-10-24 11:10:45,932 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-24 11:10:45,933 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 11:10:45,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-24 11:10:45,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-24 11:10:45,955 INFO L87 Difference]: Start difference. First operand has 39 states, 37 states have (on average 1.7837837837837838) internal successors, (66), 38 states have internal predecessors, (66), 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 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2021-10-24 11:10:45,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 11:10:45,982 INFO L93 Difference]: Finished difference Result 77 states and 131 transitions. [2021-10-24 11:10:45,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-24 11:10:45,983 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 8 [2021-10-24 11:10:45,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 11:10:46,018 INFO L225 Difference]: With dead ends: 77 [2021-10-24 11:10:46,019 INFO L226 Difference]: Without dead ends: 37 [2021-10-24 11:10:46,022 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 [2021-10-24 11:10:46,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-10-24 11:10:46,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2021-10-24 11:10:46,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.5) internal successors, (54), 36 states have internal predecessors, (54), 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) [2021-10-24 11:10:46,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 54 transitions. [2021-10-24 11:10:46,060 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 54 transitions. Word has length 8 [2021-10-24 11:10:46,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 11:10:46,061 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 54 transitions. [2021-10-24 11:10:46,061 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2021-10-24 11:10:46,061 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 54 transitions. [2021-10-24 11:10:46,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-24 11:10:46,062 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 11:10:46,063 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 11:10:46,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-24 11:10:46,063 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 11:10:46,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 11:10:46,067 INFO L82 PathProgramCache]: Analyzing trace with hash -1510972428, now seen corresponding path program 1 times [2021-10-24 11:10:46,067 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 11:10:46,067 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992811354] [2021-10-24 11:10:46,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:10:46,068 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 11:10:46,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-24 11:10:46,176 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-24 11:10:46,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-24 11:10:46,260 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-24 11:10:46,260 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-24 11:10:46,262 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 11:10:46,264 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-24 11:10:46,269 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-24 11:10:46,291 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 11:10:46 BoogieIcfgContainer [2021-10-24 11:10:46,292 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-24 11:10:46,292 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-24 11:10:46,292 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-24 11:10:46,293 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-24 11:10:46,293 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:10:45" (3/4) ... [2021-10-24 11:10:46,296 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-24 11:10:46,296 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-24 11:10:46,297 INFO L168 Benchmark]: Toolchain (without parser) took 2210.56 ms. Allocated memory is still 119.5 MB. Free memory was 78.8 MB in the beginning and 80.9 MB in the end (delta: -2.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 11:10:46,298 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 119.5 MB. Free memory was 95.5 MB in the beginning and 95.5 MB in the end (delta: 52.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 11:10:46,299 INFO L168 Benchmark]: CACSL2BoogieTranslator took 434.88 ms. Allocated memory is still 119.5 MB. Free memory was 78.6 MB in the beginning and 90.5 MB in the end (delta: -12.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-24 11:10:46,300 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.24 ms. Allocated memory is still 119.5 MB. Free memory was 90.5 MB in the beginning and 88.0 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 11:10:46,300 INFO L168 Benchmark]: Boogie Preprocessor took 79.10 ms. Allocated memory is still 119.5 MB. Free memory was 88.0 MB in the beginning and 85.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 11:10:46,301 INFO L168 Benchmark]: RCFGBuilder took 910.00 ms. Allocated memory is still 119.5 MB. Free memory was 85.9 MB in the beginning and 58.7 MB in the end (delta: 27.2 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. [2021-10-24 11:10:46,301 INFO L168 Benchmark]: TraceAbstraction took 727.90 ms. Allocated memory is still 119.5 MB. Free memory was 58.1 MB in the beginning and 81.4 MB in the end (delta: -23.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 11:10:46,302 INFO L168 Benchmark]: Witness Printer took 3.79 ms. Allocated memory is still 119.5 MB. Free memory is still 80.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 11:10:46,305 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 119.5 MB. Free memory was 95.5 MB in the beginning and 95.5 MB in the end (delta: 52.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 434.88 ms. Allocated memory is still 119.5 MB. Free memory was 78.6 MB in the beginning and 90.5 MB in the end (delta: -12.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 48.24 ms. Allocated memory is still 119.5 MB. Free memory was 90.5 MB in the beginning and 88.0 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 79.10 ms. Allocated memory is still 119.5 MB. Free memory was 88.0 MB in the beginning and 85.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 910.00 ms. Allocated memory is still 119.5 MB. Free memory was 85.9 MB in the beginning and 58.7 MB in the end (delta: 27.2 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 727.90 ms. Allocated memory is still 119.5 MB. Free memory was 58.1 MB in the beginning and 81.4 MB in the end (delta: -23.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 3.79 ms. Allocated memory is still 119.5 MB. Free memory is still 80.9 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: 178]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseOr at line 46, overapproximation of someUnaryDOUBLEoperation at line 22, overapproximation of someBinaryArithmeticDOUBLEoperation at line 47, overapproximation of bitwiseAnd at line 41, overapproximation of someBinaryDOUBLEComparisonOperation at line 18, overapproximation of bitwiseXor at line 42. Possible FailurePath: [L20-L23] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L172] double x = -1.0 / 0.0; [L173] double y = __VERIFIER_nondet_double(); [L26] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L27] __uint32_t lx, ly, lz; VAL [one_fmod=1, Zero_fmod={9:0}] [L30] ieee_double_shape_type ew_u; [L31] ew_u.value = (x) [L32] EXPR ew_u.parts.msw [L32] (hx) = ew_u.parts.msw [L33] EXPR ew_u.parts.lsw [L33] (lx) = ew_u.parts.lsw [L36] ieee_double_shape_type ew_u; [L37] ew_u.value = (y) [L38] EXPR ew_u.parts.msw [L38] (hy) = ew_u.parts.msw [L39] EXPR ew_u.parts.lsw [L39] (ly) = ew_u.parts.lsw [L41] sx = hx & 0x80000000 [L42] hx ^= sx [L43] hy &= 0x7fffffff VAL [one_fmod=1, Zero_fmod={9:0}] [L45-L46] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L47] return (x * y) / (x * y); VAL [one_fmod=1, Zero_fmod={9:0}] [L174] double res = fmod_double(x, y); [L18] return x != x; [L177] COND TRUE !isnan_double(res) [L178] reach_error() VAL [one_fmod=1, Zero_fmod={9:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 39 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 595.0ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 16.2ms, AutomataDifference: 88.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 26.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 56 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=39occurred 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: 25.3ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 14.8ms SsaConstructionTime, 128.8ms SatisfiabilityAnalysisTime, 63.3ms InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 7 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 [2021-10-24 11:10:46,359 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db2a506c-2edc-4a13-99eb-d2efebdaca6c/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-e943c26 [2021-10-24 11:10:48,652 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 11:10:48,655 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 11:10:48,704 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 11:10:48,705 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 11:10:48,709 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 11:10:48,711 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 11:10:48,714 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 11:10:48,717 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 11:10:48,725 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 11:10:48,726 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 11:10:48,727 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 11:10:48,728 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 11:10:48,730 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 11:10:48,732 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 11:10:48,736 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 11:10:48,738 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 11:10:48,739 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 11:10:48,741 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 11:10:48,748 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 11:10:48,749 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 11:10:48,751 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 11:10:48,753 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 11:10:48,755 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 11:10:48,763 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 11:10:48,764 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 11:10:48,764 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 11:10:48,766 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 11:10:48,766 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 11:10:48,768 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 11:10:48,768 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 11:10:48,769 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 11:10:48,771 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 11:10:48,771 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 11:10:48,773 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 11:10:48,773 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 11:10:48,774 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 11:10:48,790 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 11:10:48,790 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 11:10:48,792 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 11:10:48,792 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 11:10:48,793 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db2a506c-2edc-4a13-99eb-d2efebdaca6c/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-24 11:10:48,833 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 11:10:48,833 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 11:10:48,834 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 11:10:48,835 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 11:10:48,835 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 11:10:48,835 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 11:10:48,835 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 11:10:48,836 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 11:10:48,836 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 11:10:48,837 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 11:10:48,838 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 11:10:48,838 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 11:10:48,839 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 11:10:48,839 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-24 11:10:48,839 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 11:10:48,839 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-24 11:10:48,840 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 11:10:48,840 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-24 11:10:48,840 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-24 11:10:48,840 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 11:10:48,841 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-24 11:10:48,841 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 11:10:48,841 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-24 11:10:48,841 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 11:10:48,842 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-24 11:10:48,842 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 11:10:48,842 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 11:10:48,842 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 11:10:48,843 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 11:10:48,843 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-24 11:10:48,843 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-24 11:10:48,843 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-24 11:10:48,844 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-24 11:10:48,844 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 11:10:48,845 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 11:10:48,845 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_db2a506c-2edc-4a13-99eb-d2efebdaca6c/bin/utaipan-9zjyvhn0QE/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db2a506c-2edc-4a13-99eb-d2efebdaca6c/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fdbce805aa8b4a64f30ef9c8f5d71e1c7a99dc3654784a3c18b27b22409bd2e9 [2021-10-24 11:10:49,280 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 11:10:49,310 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 11:10:49,313 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 11:10:49,314 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 11:10:49,315 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 11:10:49,316 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db2a506c-2edc-4a13-99eb-d2efebdaca6c/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/float-newlib/double_req_bl_1122b.c [2021-10-24 11:10:49,385 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db2a506c-2edc-4a13-99eb-d2efebdaca6c/bin/utaipan-9zjyvhn0QE/data/6baf77b57/ace015cf63f748fa9a5fb56967395b8f/FLAG54f4b736e [2021-10-24 11:10:49,846 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 11:10:49,847 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db2a506c-2edc-4a13-99eb-d2efebdaca6c/sv-benchmarks/c/float-newlib/double_req_bl_1122b.c [2021-10-24 11:10:49,854 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db2a506c-2edc-4a13-99eb-d2efebdaca6c/bin/utaipan-9zjyvhn0QE/data/6baf77b57/ace015cf63f748fa9a5fb56967395b8f/FLAG54f4b736e [2021-10-24 11:10:50,221 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db2a506c-2edc-4a13-99eb-d2efebdaca6c/bin/utaipan-9zjyvhn0QE/data/6baf77b57/ace015cf63f748fa9a5fb56967395b8f [2021-10-24 11:10:50,223 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 11:10:50,225 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 11:10:50,228 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 11:10:50,228 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 11:10:50,231 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 11:10:50,232 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:10:50" (1/1) ... [2021-10-24 11:10:50,233 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b17a6ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:10:50, skipping insertion in model container [2021-10-24 11:10:50,233 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:10:50" (1/1) ... [2021-10-24 11:10:50,240 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 11:10:50,276 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 11:10:50,490 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_db2a506c-2edc-4a13-99eb-d2efebdaca6c/sv-benchmarks/c/float-newlib/double_req_bl_1122b.c[3907,3920] [2021-10-24 11:10:50,493 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 11:10:50,520 INFO L203 MainTranslator]: Completed pre-run [2021-10-24 11:10:50,610 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_db2a506c-2edc-4a13-99eb-d2efebdaca6c/sv-benchmarks/c/float-newlib/double_req_bl_1122b.c[3907,3920] [2021-10-24 11:10:50,615 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 11:10:50,636 INFO L208 MainTranslator]: Completed translation [2021-10-24 11:10:50,636 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:10:50 WrapperNode [2021-10-24 11:10:50,636 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 11:10:50,646 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-24 11:10:50,646 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-24 11:10:50,646 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-24 11:10:50,653 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:10:50" (1/1) ... [2021-10-24 11:10:50,677 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:10:50" (1/1) ... [2021-10-24 11:10:50,706 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-24 11:10:50,707 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-24 11:10:50,707 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-24 11:10:50,707 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-24 11:10:50,715 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:10:50" (1/1) ... [2021-10-24 11:10:50,715 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:10:50" (1/1) ... [2021-10-24 11:10:50,721 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:10:50" (1/1) ... [2021-10-24 11:10:50,721 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:10:50" (1/1) ... [2021-10-24 11:10:50,734 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:10:50" (1/1) ... [2021-10-24 11:10:50,740 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:10:50" (1/1) ... [2021-10-24 11:10:50,748 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:10:50" (1/1) ... [2021-10-24 11:10:50,752 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-24 11:10:50,753 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-24 11:10:50,753 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-24 11:10:50,753 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-24 11:10:50,754 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:10:50" (1/1) ... [2021-10-24 11:10:50,775 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 11:10:50,787 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db2a506c-2edc-4a13-99eb-d2efebdaca6c/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 11:10:50,796 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db2a506c-2edc-4a13-99eb-d2efebdaca6c/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-24 11:10:50,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db2a506c-2edc-4a13-99eb-d2efebdaca6c/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-24 11:10:50,849 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2021-10-24 11:10:50,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2021-10-24 11:10:50,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-24 11:10:50,850 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-24 11:10:50,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8 [2021-10-24 11:10:50,850 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-24 11:10:50,852 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-24 11:10:50,852 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-24 11:10:50,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-24 11:10:50,853 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-24 11:10:55,659 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-24 11:10:55,659 INFO L299 CfgBuilder]: Removed 22 assume(true) statements. [2021-10-24 11:10:55,661 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:10:55 BoogieIcfgContainer [2021-10-24 11:10:55,661 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-24 11:10:55,664 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-24 11:10:55,664 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-24 11:10:55,667 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-24 11:10:55,667 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 11:10:50" (1/3) ... [2021-10-24 11:10:55,667 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f47124e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:10:55, skipping insertion in model container [2021-10-24 11:10:55,668 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:10:50" (2/3) ... [2021-10-24 11:10:55,668 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f47124e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:10:55, skipping insertion in model container [2021-10-24 11:10:55,668 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:10:55" (3/3) ... [2021-10-24 11:10:55,669 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1122b.c [2021-10-24 11:10:55,673 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-24 11:10:55,674 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-24 11:10:55,708 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-24 11:10:55,713 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=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 [2021-10-24 11:10:55,713 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-24 11:10:55,727 INFO L276 IsEmpty]: Start isEmpty. Operand has 55 states, 53 states have (on average 1.8113207547169812) internal successors, (96), 54 states have internal predecessors, (96), 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) [2021-10-24 11:10:55,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-24 11:10:55,732 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 11:10:55,732 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 11:10:55,733 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 11:10:55,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 11:10:55,737 INFO L82 PathProgramCache]: Analyzing trace with hash 668833300, now seen corresponding path program 1 times [2021-10-24 11:10:55,748 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 11:10:55,749 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1369092754] [2021-10-24 11:10:55,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:10:55,750 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 11:10:55,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db2a506c-2edc-4a13-99eb-d2efebdaca6c/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 11:10:55,753 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db2a506c-2edc-4a13-99eb-d2efebdaca6c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 11:10:55,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db2a506c-2edc-4a13-99eb-d2efebdaca6c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-24 11:10:56,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:10:56,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-24 11:10:56,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 11:10:56,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:10:56,805 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 11:10:56,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:10:56,917 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 11:10:56,917 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1369092754] [2021-10-24 11:10:56,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1369092754] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 11:10:56,918 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 11:10:56,918 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-24 11:10:56,920 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241241976] [2021-10-24 11:10:56,924 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-24 11:10:56,924 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 11:10:56,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-24 11:10:56,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-24 11:10:56,941 INFO L87 Difference]: Start difference. First operand has 55 states, 53 states have (on average 1.8113207547169812) internal successors, (96), 54 states have internal predecessors, (96), 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) [2021-10-24 11:10:56,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 11:10:56,972 INFO L93 Difference]: Finished difference Result 108 states and 190 transitions. [2021-10-24 11:10:56,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-24 11:10:56,974 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 [2021-10-24 11:10:56,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 11:10:56,983 INFO L225 Difference]: With dead ends: 108 [2021-10-24 11:10:56,984 INFO L226 Difference]: Without dead ends: 52 [2021-10-24 11:10:56,986 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-24 11:10:57,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-10-24 11:10:57,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2021-10-24 11:10:57,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.5294117647058822) internal successors, (78), 51 states have internal predecessors, (78), 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) [2021-10-24 11:10:57,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 78 transitions. [2021-10-24 11:10:57,020 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 78 transitions. Word has length 10 [2021-10-24 11:10:57,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 11:10:57,020 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 78 transitions. [2021-10-24 11:10:57,020 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) [2021-10-24 11:10:57,020 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 78 transitions. [2021-10-24 11:10:57,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-24 11:10:57,021 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 11:10:57,021 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 11:10:57,041 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db2a506c-2edc-4a13-99eb-d2efebdaca6c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-24 11:10:57,226 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db2a506c-2edc-4a13-99eb-d2efebdaca6c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 11:10:57,227 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 11:10:57,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 11:10:57,231 INFO L82 PathProgramCache]: Analyzing trace with hash 133394385, now seen corresponding path program 1 times [2021-10-24 11:10:57,235 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 11:10:57,236 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [614388528] [2021-10-24 11:10:57,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:10:57,238 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 11:10:57,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db2a506c-2edc-4a13-99eb-d2efebdaca6c/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 11:10:57,242 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db2a506c-2edc-4a13-99eb-d2efebdaca6c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 11:10:57,277 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db2a506c-2edc-4a13-99eb-d2efebdaca6c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-24 11:10:58,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:10:58,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-24 11:10:58,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 11:11:15,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:11:15,636 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 11:11:31,206 WARN L860 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_fmod_double_~y (_ FloatingPoint 11 53))) (not (let ((.cse0 (let ((.cse1 (fp.mul c_currentRoundingMode c_ULTIMATE.start_fmod_double_~x ULTIMATE.start_fmod_double_~y))) (fp.div c_currentRoundingMode .cse1 .cse1)))) (fp.eq .cse0 .cse0)))) is different from true [2021-10-24 11:11:57,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:11:57,375 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 11:11:57,375 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [614388528] [2021-10-24 11:11:57,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [614388528] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 11:11:57,376 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 11:11:57,376 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2021-10-24 11:11:57,376 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952034531] [2021-10-24 11:11:57,378 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-24 11:11:57,378 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 11:11:57,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-24 11:11:57,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=68, Unknown=2, NotChecked=16, Total=110 [2021-10-24 11:11:57,379 INFO L87 Difference]: Start difference. First operand 52 states and 78 transitions. Second operand has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 11:12:00,229 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((ULTIMATE.start_fmod_double_~y (_ FloatingPoint 11 53))) (not (let ((.cse0 (let ((.cse1 (fp.mul c_currentRoundingMode c_ULTIMATE.start_fmod_double_~x ULTIMATE.start_fmod_double_~y))) (fp.div c_currentRoundingMode .cse1 .cse1)))) (fp.eq .cse0 .cse0)))) (= c_ULTIMATE.start_fmod_double_~x (fp.div c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 1.0)) (_ +zero 11 53))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-10-24 11:12:02,630 WARN L860 $PredicateComparison]: unable to prove that (and (forall ((ULTIMATE.start_fmod_double_~y (_ FloatingPoint 11 53))) (not (let ((.cse0 (let ((.cse1 (fp.mul c_currentRoundingMode c_ULTIMATE.start_fmod_double_~x ULTIMATE.start_fmod_double_~y))) (fp.div c_currentRoundingMode .cse1 .cse1)))) (fp.eq .cse0 .cse0)))) (= c_ULTIMATE.start_fmod_double_~x (fp.div c_currentRoundingMode (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 1.0)) (_ +zero 11 53))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-10-24 11:12:22,935 WARN L207 SmtUtils]: Spent 10.29 s on a formula simplification. DAG size of input: 18 DAG size of output: 16 [2021-10-24 11:12:38,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 11:12:38,399 INFO L93 Difference]: Finished difference Result 57 states and 82 transitions. [2021-10-24 11:12:38,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-24 11:12:38,435 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-24 11:12:38,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 11:12:38,436 INFO L225 Difference]: With dead ends: 57 [2021-10-24 11:12:38,436 INFO L226 Difference]: Without dead ends: 52 [2021-10-24 11:12:38,437 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 2 IntricatePredicates, 1 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 54625.4ms TimeCoverageRelationStatistics Valid=41, Invalid=95, Unknown=4, NotChecked=42, Total=182 [2021-10-24 11:12:38,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-10-24 11:12:38,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2021-10-24 11:12:38,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.5098039215686274) internal successors, (77), 51 states have internal predecessors, (77), 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) [2021-10-24 11:12:38,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 77 transitions. [2021-10-24 11:12:38,446 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 77 transitions. Word has length 12 [2021-10-24 11:12:38,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 11:12:38,446 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 77 transitions. [2021-10-24 11:12:38,447 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 11:12:38,447 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 77 transitions. [2021-10-24 11:12:38,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-24 11:12:38,448 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 11:12:38,448 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 11:12:38,471 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db2a506c-2edc-4a13-99eb-d2efebdaca6c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-24 11:12:38,656 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db2a506c-2edc-4a13-99eb-d2efebdaca6c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 11:12:38,658 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 11:12:38,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 11:12:38,660 INFO L82 PathProgramCache]: Analyzing trace with hash -910533226, now seen corresponding path program 1 times [2021-10-24 11:12:38,664 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 11:12:38,667 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1223627527] [2021-10-24 11:12:38,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:12:38,671 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 11:12:38,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db2a506c-2edc-4a13-99eb-d2efebdaca6c/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 11:12:38,676 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db2a506c-2edc-4a13-99eb-d2efebdaca6c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 11:12:38,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db2a506c-2edc-4a13-99eb-d2efebdaca6c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-24 11:12:38,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:12:38,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-24 11:12:38,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 11:12:39,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:12:39,813 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 11:12:40,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:12:40,873 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 11:12:40,874 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1223627527] [2021-10-24 11:12:40,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1223627527] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 11:12:40,874 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 11:12:40,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-10-24 11:12:40,875 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466767524] [2021-10-24 11:12:40,875 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-24 11:12:40,875 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 11:12:40,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-24 11:12:40,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-24 11:12:40,877 INFO L87 Difference]: Start difference. First operand 52 states and 77 transitions. Second operand has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 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) [2021-10-24 11:12:41,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 11:12:41,321 INFO L93 Difference]: Finished difference Result 52 states and 77 transitions. [2021-10-24 11:12:41,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-24 11:12:41,321 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 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 14 [2021-10-24 11:12:41,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 11:12:41,322 INFO L225 Difference]: With dead ends: 52 [2021-10-24 11:12:41,322 INFO L226 Difference]: Without dead ends: 0 [2021-10-24 11:12:41,323 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1328.3ms TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-10-24 11:12:41,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-24 11:12:41,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-24 11:12:41,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 11:12:41,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-24 11:12:41,324 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2021-10-24 11:12:41,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 11:12:41,324 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-24 11:12:41,324 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 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) [2021-10-24 11:12:41,325 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-24 11:12:41,325 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-24 11:12:41,327 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 11:12:41,348 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db2a506c-2edc-4a13-99eb-d2efebdaca6c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-24 11:12:41,529 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db2a506c-2edc-4a13-99eb-d2efebdaca6c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 11:12:41,535 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-24 11:12:41,544 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:12:41,600 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:12:41,601 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:12:41,602 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:12:41,603 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:12:41,603 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:12:41,606 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:12:41,607 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:12:41,609 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:12:41,609 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:12:41,610 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:00,906 WARN L207 SmtUtils]: Spent 15.39 s on a formula simplification. DAG size of input: 18 DAG size of output: 11 [2021-10-24 11:13:00,909 INFO L857 garLoopResultBuilder]: For program point L35-2(lines 35 40) no Hoare annotation was computed. [2021-10-24 11:13:00,909 INFO L853 garLoopResultBuilder]: At program point L68-3(lines 68 69) the Hoare annotation is: false [2021-10-24 11:13:00,910 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-24 11:13:00,910 INFO L857 garLoopResultBuilder]: For program point L136-1(lines 136 141) no Hoare annotation was computed. [2021-10-24 11:13:00,910 INFO L857 garLoopResultBuilder]: For program point L103-1(lines 103 117) no Hoare annotation was computed. [2021-10-24 11:13:00,910 INFO L853 garLoopResultBuilder]: At program point L136-2(lines 136 141) the Hoare annotation is: false [2021-10-24 11:13:00,911 INFO L857 garLoopResultBuilder]: For program point L103-3(lines 103 117) no Hoare annotation was computed. [2021-10-24 11:13:00,911 INFO L857 garLoopResultBuilder]: For program point L120(lines 120 121) no Hoare annotation was computed. [2021-10-24 11:13:00,911 INFO L857 garLoopResultBuilder]: For program point L120-2(lines 25 163) no Hoare annotation was computed. [2021-10-24 11:13:00,912 INFO L857 garLoopResultBuilder]: For program point L71-2(lines 71 72) no Hoare annotation was computed. [2021-10-24 11:13:00,912 INFO L853 garLoopResultBuilder]: At program point L71-3(lines 71 72) the Hoare annotation is: false [2021-10-24 11:13:00,912 INFO L857 garLoopResultBuilder]: For program point L154(lines 154 159) no Hoare annotation was computed. [2021-10-24 11:13:00,913 INFO L857 garLoopResultBuilder]: For program point L154-1(lines 142 161) no Hoare annotation was computed. [2021-10-24 11:13:00,913 INFO L857 garLoopResultBuilder]: For program point L154-2(lines 154 159) no Hoare annotation was computed. [2021-10-24 11:13:00,913 INFO L857 garLoopResultBuilder]: For program point L55(lines 25 163) no Hoare annotation was computed. [2021-10-24 11:13:00,913 INFO L857 garLoopResultBuilder]: For program point L122-1(lines 25 163) no Hoare annotation was computed. [2021-10-24 11:13:00,914 INFO L857 garLoopResultBuilder]: For program point L56(lines 56 62) no Hoare annotation was computed. [2021-10-24 11:13:00,914 INFO L857 garLoopResultBuilder]: For program point L106(lines 106 107) no Hoare annotation was computed. [2021-10-24 11:13:00,914 INFO L857 garLoopResultBuilder]: For program point L106-2(lines 103 117) no Hoare annotation was computed. [2021-10-24 11:13:00,915 INFO L857 garLoopResultBuilder]: For program point L57-2(lines 57 58) no Hoare annotation was computed. [2021-10-24 11:13:00,915 INFO L853 garLoopResultBuilder]: At program point L57-3(lines 57 58) the Hoare annotation is: false [2021-10-24 11:13:00,915 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-24 11:13:00,915 INFO L853 garLoopResultBuilder]: At program point L108-1(lines 103 117) the Hoare annotation is: false [2021-10-24 11:13:00,916 INFO L857 garLoopResultBuilder]: For program point L93(lines 93 99) no Hoare annotation was computed. [2021-10-24 11:13:00,916 INFO L857 garLoopResultBuilder]: For program point L93-2(lines 89 100) no Hoare annotation was computed. [2021-10-24 11:13:00,916 INFO L857 garLoopResultBuilder]: For program point L60-2(lines 60 61) no Hoare annotation was computed. [2021-10-24 11:13:00,916 INFO L853 garLoopResultBuilder]: At program point L60-3(lines 60 61) the Hoare annotation is: false [2021-10-24 11:13:00,917 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-24 11:13:00,917 INFO L857 garLoopResultBuilder]: For program point L177(lines 177 180) no Hoare annotation was computed. [2021-10-24 11:13:00,917 INFO L857 garLoopResultBuilder]: For program point L144(lines 144 153) no Hoare annotation was computed. [2021-10-24 11:13:00,918 INFO L857 garLoopResultBuilder]: For program point L45(lines 45 47) no Hoare annotation was computed. [2021-10-24 11:13:00,918 INFO L857 garLoopResultBuilder]: For program point L29-1(lines 29 34) no Hoare annotation was computed. [2021-10-24 11:13:00,918 INFO L853 garLoopResultBuilder]: At program point L29-2(lines 29 34) the Hoare annotation is: (and (= ULTIMATE.start_fmod_double_~x (fp.div currentRoundingMode (fp.neg ((_ to_fp 11 53) currentRoundingMode 1.0)) (_ +zero 11 53))) (= currentRoundingMode roundNearestTiesToEven)) [2021-10-24 11:13:00,918 INFO L857 garLoopResultBuilder]: For program point L178(line 178) no Hoare annotation was computed. [2021-10-24 11:13:00,919 INFO L857 garLoopResultBuilder]: For program point L112(lines 112 113) no Hoare annotation was computed. [2021-10-24 11:13:00,919 INFO L853 garLoopResultBuilder]: At program point L162(lines 25 163) the Hoare annotation is: (not (fp.eq |ULTIMATE.start_fmod_double_#res| |ULTIMATE.start_fmod_double_#res|)) [2021-10-24 11:13:00,919 INFO L853 garLoopResultBuilder]: At program point L129-2(lines 129 133) the Hoare annotation is: false [2021-10-24 11:13:00,919 INFO L857 garLoopResultBuilder]: For program point L129-3(lines 25 163) no Hoare annotation was computed. [2021-10-24 11:13:00,920 INFO L857 garLoopResultBuilder]: For program point L147(lines 147 153) no Hoare annotation was computed. [2021-10-24 11:13:00,920 INFO L857 garLoopResultBuilder]: For program point L81(lines 81 87) no Hoare annotation was computed. [2021-10-24 11:13:00,920 INFO L857 garLoopResultBuilder]: For program point L48(lines 48 53) no Hoare annotation was computed. [2021-10-24 11:13:00,920 INFO L857 garLoopResultBuilder]: For program point L81-2(lines 25 163) no Hoare annotation was computed. [2021-10-24 11:13:00,921 INFO L857 garLoopResultBuilder]: For program point L48-2(lines 25 163) no Hoare annotation was computed. [2021-10-24 11:13:00,921 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-24 11:13:00,921 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 178) no Hoare annotation was computed. [2021-10-24 11:13:00,921 INFO L857 garLoopResultBuilder]: For program point L49(lines 49 50) no Hoare annotation was computed. [2021-10-24 11:13:00,922 INFO L857 garLoopResultBuilder]: For program point L66(lines 25 163) no Hoare annotation was computed. [2021-10-24 11:13:00,922 INFO L860 garLoopResultBuilder]: At program point L182(lines 165 183) the Hoare annotation is: true [2021-10-24 11:13:00,922 INFO L857 garLoopResultBuilder]: For program point L67(lines 67 73) no Hoare annotation was computed. [2021-10-24 11:13:00,922 INFO L857 garLoopResultBuilder]: For program point L51(lines 51 52) no Hoare annotation was computed. [2021-10-24 11:13:00,923 INFO L853 garLoopResultBuilder]: At program point L18(line 18) the Hoare annotation is: (and (exists ((ULTIMATE.start_fmod_double_~y (_ FloatingPoint 11 53))) (= |ULTIMATE.start_fmod_double_#res| (let ((.cse0 (fp.mul roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.neg ((_ to_fp 11 53) roundNearestTiesToEven 1.0)) (_ +zero 11 53)) ULTIMATE.start_fmod_double_~y))) (fp.div roundNearestTiesToEven .cse0 .cse0)))) (= (_ bv1 32) |ULTIMATE.start_isnan_double_#res|)) [2021-10-24 11:13:00,923 INFO L857 garLoopResultBuilder]: For program point L134(lines 134 161) no Hoare annotation was computed. [2021-10-24 11:13:00,923 INFO L857 garLoopResultBuilder]: For program point L35(lines 35 40) no Hoare annotation was computed. [2021-10-24 11:13:00,924 INFO L857 garLoopResultBuilder]: For program point L35-1(lines 25 163) no Hoare annotation was computed. [2021-10-24 11:13:00,924 INFO L857 garLoopResultBuilder]: For program point L68-2(lines 68 69) no Hoare annotation was computed. [2021-10-24 11:13:00,930 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-24 11:13:00,939 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-24 11:13:00,940 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-24 11:13:00,940 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-24 11:13:00,941 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-24 11:13:00,941 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_fmod_double_~y,QUANTIFIED] [2021-10-24 11:13:00,941 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-24 11:13:00,942 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-24 11:13:00,942 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-24 11:13:00,942 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_fmod_double_~y,QUANTIFIED] [2021-10-24 11:13:00,947 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-24 11:13:00,947 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-24 11:13:00,948 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-24 11:13:00,948 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-24 11:13:00,948 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_fmod_double_~y,QUANTIFIED] [2021-10-24 11:13:00,948 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-24 11:13:00,949 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-24 11:13:00,949 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-24 11:13:00,949 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_fmod_double_~y,QUANTIFIED] [2021-10-24 11:13:00,952 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-24 11:13:00,953 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-24 11:13:00,953 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 11:13:00 BoogieIcfgContainer [2021-10-24 11:13:00,953 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-24 11:13:00,954 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-24 11:13:00,954 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-24 11:13:00,955 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-24 11:13:00,955 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:10:55" (3/4) ... [2021-10-24 11:13:00,958 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-24 11:13:00,970 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-10-24 11:13:00,970 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2021-10-24 11:13:00,971 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-24 11:13:00,971 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-24 11:13:01,007 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db2a506c-2edc-4a13-99eb-d2efebdaca6c/bin/utaipan-9zjyvhn0QE/witness.graphml [2021-10-24 11:13:01,007 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-24 11:13:01,008 INFO L168 Benchmark]: Toolchain (without parser) took 130782.99 ms. Allocated memory was 71.3 MB in the beginning and 90.2 MB in the end (delta: 18.9 MB). Free memory was 52.8 MB in the beginning and 38.8 MB in the end (delta: 14.0 MB). Peak memory consumption was 34.2 MB. Max. memory is 16.1 GB. [2021-10-24 11:13:01,009 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 71.3 MB. Free memory was 51.6 MB in the beginning and 51.5 MB in the end (delta: 54.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 11:13:01,010 INFO L168 Benchmark]: CACSL2BoogieTranslator took 409.18 ms. Allocated memory is still 71.3 MB. Free memory was 52.7 MB in the beginning and 51.7 MB in the end (delta: 990.5 kB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-24 11:13:01,010 INFO L168 Benchmark]: Boogie Procedure Inliner took 60.31 ms. Allocated memory is still 71.3 MB. Free memory was 51.7 MB in the beginning and 49.4 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 11:13:01,011 INFO L168 Benchmark]: Boogie Preprocessor took 45.90 ms. Allocated memory is still 71.3 MB. Free memory was 49.4 MB in the beginning and 47.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 11:13:01,011 INFO L168 Benchmark]: RCFGBuilder took 4908.04 ms. Allocated memory is still 71.3 MB. Free memory was 47.3 MB in the beginning and 51.4 MB in the end (delta: -4.1 MB). Peak memory consumption was 23.3 MB. Max. memory is 16.1 GB. [2021-10-24 11:13:01,012 INFO L168 Benchmark]: TraceAbstraction took 125289.74 ms. Allocated memory was 71.3 MB in the beginning and 90.2 MB in the end (delta: 18.9 MB). Free memory was 50.9 MB in the beginning and 41.9 MB in the end (delta: 9.0 MB). Peak memory consumption was 26.5 MB. Max. memory is 16.1 GB. [2021-10-24 11:13:01,012 INFO L168 Benchmark]: Witness Printer took 53.47 ms. Allocated memory is still 90.2 MB. Free memory was 41.9 MB in the beginning and 38.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-24 11:13:01,015 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 71.3 MB. Free memory was 51.6 MB in the beginning and 51.5 MB in the end (delta: 54.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 409.18 ms. Allocated memory is still 71.3 MB. Free memory was 52.7 MB in the beginning and 51.7 MB in the end (delta: 990.5 kB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 60.31 ms. Allocated memory is still 71.3 MB. Free memory was 51.7 MB in the beginning and 49.4 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 45.90 ms. Allocated memory is still 71.3 MB. Free memory was 49.4 MB in the beginning and 47.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 4908.04 ms. Allocated memory is still 71.3 MB. Free memory was 47.3 MB in the beginning and 51.4 MB in the end (delta: -4.1 MB). Peak memory consumption was 23.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 125289.74 ms. Allocated memory was 71.3 MB in the beginning and 90.2 MB in the end (delta: 18.9 MB). Free memory was 50.9 MB in the beginning and 41.9 MB in the end (delta: 9.0 MB). Peak memory consumption was 26.5 MB. Max. memory is 16.1 GB. * Witness Printer took 53.47 ms. Allocated memory is still 90.2 MB. Free memory was 41.9 MB in the beginning and 38.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_fmod_double_~y,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_fmod_double_~y,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_fmod_double_~y,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_fmod_double_~y,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 178]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 55 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 125223.0ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 9.9ms, AutomataDifference: 41568.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 19378.1ms, InitialAbstractionConstructionTime: 9.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 154 SDtfs, 12 SDslu, 402 SDs, 0 SdLazy, 36 SolverSat, 3 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 10524.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 73 GetRequests, 52 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 2 IntricatePredicates, 1 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 55953.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=55occurred in iteration=0, InterpolantAutomatonStates: 14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 29.1ms AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 11 LocationsWithAnnotation, 11 PreInvPairs, 15 NumberOfFragments, 54 HoareAnnotationTreeSize, 11 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 72.5ms HoareSimplificationTime, 11 FomulaSimplificationsInter, 33 FormulaSimplificationTreeSizeReductionInter, 19291.8ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 38.0ms SsaConstructionTime, 1795.7ms SatisfiabilityAnalysisTime, 61501.1ms InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 66 ConstructedInterpolants, 14 QuantifiedInterpolants, 469 SizeOfPredicates, 19 NumberOfNonLiveVariables, 199 ConjunctsInSsa, 21 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 18]: Loop Invariant [2021-10-24 11:13:01,025 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-24 11:13:01,025 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-24 11:13:01,025 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-24 11:13:01,025 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-24 11:13:01,026 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_fmod_double_~y,QUANTIFIED] [2021-10-24 11:13:01,026 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-24 11:13:01,026 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-24 11:13:01,026 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-24 11:13:01,026 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_fmod_double_~y,QUANTIFIED] [2021-10-24 11:13:01,027 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-24 11:13:01,027 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-24 11:13:01,027 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-24 11:13:01,028 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-24 11:13:01,028 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_fmod_double_~y,QUANTIFIED] [2021-10-24 11:13:01,028 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-24 11:13:01,028 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-24 11:13:01,028 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-24 11:13:01,029 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_fmod_double_~y,QUANTIFIED] Derived loop invariant: (\exists ULTIMATE.start_fmod_double_~y : C_DOUBLE :: \result == ~fp.div~DOUBLE(~roundNearestTiesToEven, ~fp.mul~DOUBLE(~roundNearestTiesToEven, ~fp.div~DOUBLE(~roundNearestTiesToEven, ~fp.neg~DOUBLE(~to_fp~LONGDOUBLE(~roundNearestTiesToEven, 1.0)), ~Pluszero~LONGDOUBLE()), ULTIMATE.start_fmod_double_~y), ~fp.mul~DOUBLE(~roundNearestTiesToEven, ~fp.div~DOUBLE(~roundNearestTiesToEven, ~fp.neg~DOUBLE(~to_fp~LONGDOUBLE(~roundNearestTiesToEven, 1.0)), ~Pluszero~LONGDOUBLE()), ULTIMATE.start_fmod_double_~y))) && 1bv32 == \result - InvariantResult [Line: 129]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 57]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 71]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 136]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 103]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 60]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: !~fp.eq~DOUBLE(\result, \result) - InvariantResult [Line: 68]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 165]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 29]: Loop Invariant [2021-10-24 11:13:01,031 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-24 11:13:01,031 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: x == ~fp.div~DOUBLE(unknown-currentRoundingMode-unknown, ~fp.neg~DOUBLE(~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0)), ~Pluszero~LONGDOUBLE()) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven RESULT: Ultimate proved your program to be correct! [2021-10-24 11:13:01,237 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db2a506c-2edc-4a13-99eb-d2efebdaca6c/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2021-10-24 11:13:01,294 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db2a506c-2edc-4a13-99eb-d2efebdaca6c/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 137 Received shutdown request...