./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_0620a.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04e48dae-9543-4a4d-b7e6-6650d60eb0fa/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04e48dae-9543-4a4d-b7e6-6650d60eb0fa/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04e48dae-9543-4a4d-b7e6-6650d60eb0fa/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04e48dae-9543-4a4d-b7e6-6650d60eb0fa/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0620a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04e48dae-9543-4a4d-b7e6-6650d60eb0fa/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04e48dae-9543-4a4d-b7e6-6650d60eb0fa/bin/utaipan-WLngWcDbfI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5b13cd337396811bf9b23b015fd97985af6ec65a ................................................................................................................................................................................................................................................................................................................................. 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_04e48dae-9543-4a4d-b7e6-6650d60eb0fa/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04e48dae-9543-4a4d-b7e6-6650d60eb0fa/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04e48dae-9543-4a4d-b7e6-6650d60eb0fa/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04e48dae-9543-4a4d-b7e6-6650d60eb0fa/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0620a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04e48dae-9543-4a4d-b7e6-6650d60eb0fa/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04e48dae-9543-4a4d-b7e6-6650d60eb0fa/bin/utaipan-WLngWcDbfI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5b13cd337396811bf9b23b015fd97985af6ec65a .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:22:06,960 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:22:06,964 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:22:07,024 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:22:07,025 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:22:07,031 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:22:07,034 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:22:07,039 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:22:07,042 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:22:07,049 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:22:07,051 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:22:07,052 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:22:07,053 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:22:07,057 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:22:07,059 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:22:07,061 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:22:07,063 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:22:07,067 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:22:07,070 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:22:07,080 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:22:07,083 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:22:07,084 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:22:07,088 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:22:07,089 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:22:07,100 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:22:07,101 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:22:07,101 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:22:07,104 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:22:07,105 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:22:07,107 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:22:07,108 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:22:07,109 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:22:07,111 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:22:07,113 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:22:07,115 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:22:07,115 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:22:07,116 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:22:07,116 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:22:07,117 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:22:07,118 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:22:07,119 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:22:07,122 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04e48dae-9543-4a4d-b7e6-6650d60eb0fa/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:22:07,173 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:22:07,173 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:22:07,175 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:22:07,175 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:22:07,176 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:22:07,176 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:22:07,176 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:22:07,177 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:22:07,185 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:22:07,185 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:22:07,187 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:22:07,187 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:22:07,187 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:22:07,188 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:22:07,188 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:22:07,190 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:22:07,190 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:22:07,190 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:22:07,191 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:22:07,191 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:22:07,191 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:22:07,192 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:22:07,192 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:22:07,192 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:22:07,193 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:22:07,193 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:22:07,193 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:22:07,194 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:22:07,194 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:22:07,196 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:22:07,197 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:22:07,197 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:22:07,198 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:22:07,198 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:22:07,198 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:22:07,199 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:22:07,199 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:22:07,199 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:22:07,200 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:22:07,200 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_04e48dae-9543-4a4d-b7e6-6650d60eb0fa/bin/utaipan-WLngWcDbfI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04e48dae-9543-4a4d-b7e6-6650d60eb0fa/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5b13cd337396811bf9b23b015fd97985af6ec65a [2021-10-11 02:22:07,517 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:22:07,567 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:22:07,572 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:22:07,573 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:22:07,578 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:22:07,579 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04e48dae-9543-4a4d-b7e6-6650d60eb0fa/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/float-newlib/float_req_bl_0620a.c [2021-10-11 02:22:07,674 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04e48dae-9543-4a4d-b7e6-6650d60eb0fa/bin/utaipan-WLngWcDbfI/data/b74e43f58/ecfd13a5095f47a1888ce39145ef87d8/FLAG686d3bb2d [2021-10-11 02:22:08,235 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:22:08,236 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04e48dae-9543-4a4d-b7e6-6650d60eb0fa/sv-benchmarks/c/float-newlib/float_req_bl_0620a.c [2021-10-11 02:22:08,245 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04e48dae-9543-4a4d-b7e6-6650d60eb0fa/bin/utaipan-WLngWcDbfI/data/b74e43f58/ecfd13a5095f47a1888ce39145ef87d8/FLAG686d3bb2d [2021-10-11 02:22:08,611 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04e48dae-9543-4a4d-b7e6-6650d60eb0fa/bin/utaipan-WLngWcDbfI/data/b74e43f58/ecfd13a5095f47a1888ce39145ef87d8 [2021-10-11 02:22:08,614 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:22:08,618 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:22:08,624 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:22:08,624 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:22:08,629 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:22:08,632 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:22:08" (1/1) ... [2021-10-11 02:22:08,635 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@526abcc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:08, skipping insertion in model container [2021-10-11 02:22:08,636 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:22:08" (1/1) ... [2021-10-11 02:22:08,644 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:22:08,685 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:22:09,055 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04e48dae-9543-4a4d-b7e6-6650d60eb0fa/sv-benchmarks/c/float-newlib/float_req_bl_0620a.c[3328,3341] [2021-10-11 02:22:09,058 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:22:09,070 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:22:09,116 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04e48dae-9543-4a4d-b7e6-6650d60eb0fa/sv-benchmarks/c/float-newlib/float_req_bl_0620a.c[3328,3341] [2021-10-11 02:22:09,116 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:22:09,140 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:22:09,141 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:09 WrapperNode [2021-10-11 02:22:09,141 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:22:09,142 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:22:09,143 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:22:09,143 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:22:09,152 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:09" (1/1) ... [2021-10-11 02:22:09,180 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:09" (1/1) ... [2021-10-11 02:22:09,220 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:22:09,221 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:22:09,221 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:22:09,221 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:22:09,238 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:09" (1/1) ... [2021-10-11 02:22:09,238 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:09" (1/1) ... [2021-10-11 02:22:09,244 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:09" (1/1) ... [2021-10-11 02:22:09,245 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:09" (1/1) ... [2021-10-11 02:22:09,260 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:09" (1/1) ... [2021-10-11 02:22:09,266 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:09" (1/1) ... [2021-10-11 02:22:09,270 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:09" (1/1) ... [2021-10-11 02:22:09,282 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:22:09,283 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:22:09,283 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:22:09,283 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:22:09,298 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:09" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04e48dae-9543-4a4d-b7e6-6650d60eb0fa/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:22:09,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:22:09,370 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:22:09,371 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-10-11 02:22:09,371 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-11 02:22:09,371 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-10-11 02:22:09,371 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:22:09,372 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:22:09,372 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-11 02:22:09,372 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2021-10-11 02:22:09,372 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-11 02:22:10,096 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:22:10,096 INFO L299 CfgBuilder]: Removed 18 assume(true) statements. [2021-10-11 02:22:10,098 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:22:10 BoogieIcfgContainer [2021-10-11 02:22:10,099 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:22:10,100 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:22:10,101 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:22:10,104 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:22:10,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:22:08" (1/3) ... [2021-10-11 02:22:10,106 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64db14b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:22:10, skipping insertion in model container [2021-10-11 02:22:10,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:09" (2/3) ... [2021-10-11 02:22:10,106 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64db14b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:22:10, skipping insertion in model container [2021-10-11 02:22:10,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:22:10" (3/3) ... [2021-10-11 02:22:10,108 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0620a.c [2021-10-11 02:22:10,124 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:22:10,128 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:22:10,142 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 02:22:10,169 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:22:10,169 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:22:10,169 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:22:10,169 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:22:10,169 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:22:10,169 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:22:10,170 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:22:10,170 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:22:10,184 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2021-10-11 02:22:10,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-11 02:22:10,190 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:22:10,191 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:22:10,191 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:22:10,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:22:10,198 INFO L82 PathProgramCache]: Analyzing trace with hash -37158554, now seen corresponding path program 1 times [2021-10-11 02:22:10,207 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:22:10,207 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442752993] [2021-10-11 02:22:10,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:22:10,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:22:10,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:22:10,468 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442752993] [2021-10-11 02:22:10,470 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:22:10,470 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:22:10,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928255826] [2021-10-11 02:22:10,475 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-10-11 02:22:10,476 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:22:10,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-11 02:22:10,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 02:22:10,498 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 2 states. [2021-10-11 02:22:10,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:22:10,527 INFO L93 Difference]: Finished difference Result 49 states and 75 transitions. [2021-10-11 02:22:10,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-11 02:22:10,529 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2021-10-11 02:22:10,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:22:10,546 INFO L225 Difference]: With dead ends: 49 [2021-10-11 02:22:10,547 INFO L226 Difference]: Without dead ends: 23 [2021-10-11 02:22:10,551 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 02:22:10,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-10-11 02:22:10,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-10-11 02:22:10,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2021-10-11 02:22:10,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2021-10-11 02:22:10,591 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 8 [2021-10-11 02:22:10,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:22:10,592 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2021-10-11 02:22:10,592 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-10-11 02:22:10,592 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2021-10-11 02:22:10,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-11 02:22:10,593 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:22:10,594 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:22:10,594 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:22:10,594 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:22:10,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:22:10,597 INFO L82 PathProgramCache]: Analyzing trace with hash -276774099, now seen corresponding path program 1 times [2021-10-11 02:22:10,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:22:10,598 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047052247] [2021-10-11 02:22:10,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:22:10,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:22:10,762 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:22:10,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:22:10,860 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:22:10,911 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-11 02:22:10,911 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-10-11 02:22:10,912 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:22:10,987 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:22:10 BoogieIcfgContainer [2021-10-11 02:22:10,987 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:22:10,988 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:22:10,989 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:22:10,989 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:22:10,990 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:22:10" (3/4) ... [2021-10-11 02:22:10,994 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-11 02:22:10,994 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:22:10,997 INFO L168 Benchmark]: Toolchain (without parser) took 2377.54 ms. Allocated memory is still 144.7 MB. Free memory was 112.2 MB in the beginning and 90.4 MB in the end (delta: 21.7 MB). Peak memory consumption was 20.8 MB. Max. memory is 16.1 GB. [2021-10-11 02:22:10,998 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 92.3 MB. Free memory is still 47.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:22:10,999 INFO L168 Benchmark]: CACSL2BoogieTranslator took 517.69 ms. Allocated memory is still 144.7 MB. Free memory was 111.9 MB in the beginning and 118.0 MB in the end (delta: -6.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:22:11,000 INFO L168 Benchmark]: Boogie Procedure Inliner took 77.82 ms. Allocated memory is still 144.7 MB. Free memory was 118.0 MB in the beginning and 115.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:22:11,002 INFO L168 Benchmark]: Boogie Preprocessor took 61.12 ms. Allocated memory is still 144.7 MB. Free memory was 115.9 MB in the beginning and 114.3 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:22:11,003 INFO L168 Benchmark]: RCFGBuilder took 815.79 ms. Allocated memory is still 144.7 MB. Free memory was 113.8 MB in the beginning and 119.8 MB in the end (delta: -6.0 MB). Peak memory consumption was 38.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:22:11,004 INFO L168 Benchmark]: TraceAbstraction took 887.12 ms. Allocated memory is still 144.7 MB. Free memory was 119.1 MB in the beginning and 90.9 MB in the end (delta: 28.2 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. [2021-10-11 02:22:11,005 INFO L168 Benchmark]: Witness Printer took 5.60 ms. Allocated memory is still 144.7 MB. Free memory was 90.9 MB in the beginning and 90.4 MB in the end (delta: 462.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:22:11,015 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 92.3 MB. Free memory is still 47.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 517.69 ms. Allocated memory is still 144.7 MB. Free memory was 111.9 MB in the beginning and 118.0 MB in the end (delta: -6.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 77.82 ms. Allocated memory is still 144.7 MB. Free memory was 118.0 MB in the beginning and 115.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 61.12 ms. Allocated memory is still 144.7 MB. Free memory was 115.9 MB in the beginning and 114.3 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 815.79 ms. Allocated memory is still 144.7 MB. Free memory was 113.8 MB in the beginning and 119.8 MB in the end (delta: -6.0 MB). Peak memory consumption was 38.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 887.12 ms. Allocated memory is still 144.7 MB. Free memory was 119.1 MB in the beginning and 90.9 MB in the end (delta: 28.2 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. * Witness Printer took 5.60 ms. Allocated memory is still 144.7 MB. Free memory was 90.9 MB in the beginning and 90.4 MB in the end (delta: 462.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 144]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 143, overapproximation of someUnaryDOUBLEoperation at line 46, overapproximation of bitwiseAnd at line 64, overapproximation of someBinaryArithmeticFLOAToperation at line 67. Possible FailurePath: [L14] static const float huge_floor = 1.0e30; [L31-L36] static const float atanhi_atan[] = { 4.6364760399e-01, 7.8539812565e-01, 9.8279368877e-01, 1.5707962513e+00, }; [L38-L43] static const float atanlo_atan[] = { 5.0121582440e-09, 3.7748947079e-08, 3.4473217170e-08, 7.5497894159e-08, }; [L45-L49] static const float aT_atan[] = { 3.3333334327e-01, -2.0000000298e-01, 1.4285714924e-01, -1.1111110449e-01, 9.0908870101e-02, -7.6918758452e-02, 6.6610731184e-02, -5.8335702866e-02, 4.9768779427e-02, -3.6531571299e-02, 1.6285819933e-02, }; [L51-L53] static const float one_atan = 1.0, huge_atan = 1.0e30, pi_o_4 = 7.8539818525e-01, pi_o_2 = 1.5707963705e+00, pi = 3.1415927410e+00; [L139] float x = 0.0f; [L56] float w, s1, s2, z; [L57] __int32_t ix, hx, id; VAL [aT_atan={11:0}, atanhi_atan={9:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000] [L60] ieee_float_shape_type gf_u; [L61] gf_u.value = (x) [L62] EXPR gf_u.word [L62] (hx) = gf_u.word [L64] ix = hx & 0x7fffffff VAL [aT_atan={11:0}, atanhi_atan={9:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000] [L65] COND TRUE ix >= 0x50800000 [L66] COND FALSE !(((ix) > 0x7f800000L)) [L68] COND FALSE !(hx > 0) [L71] EXPR atanhi_atan[3] [L71] EXPR atanlo_atan[3] [L71] return -atanhi_atan[3] - atanlo_atan[3]; [L140] float res = atan_float(x); [L143] EXPR res == 0.0f && __signbit_float(res) == 0 VAL [aT_atan={11:0}, atanhi_atan={9:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000] [L143] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L144] reach_error() VAL [aT_atan={11:0}, atanhi_atan={9:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 29 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 49 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 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:22:13,809 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:22:13,811 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:22:13,869 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:22:13,870 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:22:13,875 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:22:13,879 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:22:13,884 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:22:13,888 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:22:13,895 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:22:13,900 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:22:13,902 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:22:13,902 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:22:13,906 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:22:13,908 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:22:13,911 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:22:13,913 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:22:13,917 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:22:13,920 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:22:13,928 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:22:13,931 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:22:13,932 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:22:13,936 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:22:13,938 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:22:13,948 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:22:13,949 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:22:13,949 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:22:13,952 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:22:13,953 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:22:13,954 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:22:13,955 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:22:13,956 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:22:13,958 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:22:13,959 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:22:13,961 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:22:13,961 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:22:13,962 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:22:13,963 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:22:13,963 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:22:13,965 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:22:13,966 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:22:13,967 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04e48dae-9543-4a4d-b7e6-6650d60eb0fa/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-11 02:22:14,020 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:22:14,021 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:22:14,022 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:22:14,023 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:22:14,023 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:22:14,023 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:22:14,024 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:22:14,024 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:22:14,024 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:22:14,026 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:22:14,028 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:22:14,028 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:22:14,028 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:22:14,029 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:22:14,029 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:22:14,029 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:22:14,029 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:22:14,030 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-11 02:22:14,030 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-11 02:22:14,030 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:22:14,031 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:22:14,031 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:22:14,031 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:22:14,032 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:22:14,032 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-11 02:22:14,032 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:22:14,032 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:22:14,033 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:22:14,033 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:22:14,033 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:22:14,034 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-11 02:22:14,034 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-11 02:22:14,034 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:22:14,035 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:22:14,035 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:22:14,035 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_04e48dae-9543-4a4d-b7e6-6650d60eb0fa/bin/utaipan-WLngWcDbfI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04e48dae-9543-4a4d-b7e6-6650d60eb0fa/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5b13cd337396811bf9b23b015fd97985af6ec65a [2021-10-11 02:22:14,476 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:22:14,520 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:22:14,526 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:22:14,528 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:22:14,528 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:22:14,530 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04e48dae-9543-4a4d-b7e6-6650d60eb0fa/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/float-newlib/float_req_bl_0620a.c [2021-10-11 02:22:14,614 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04e48dae-9543-4a4d-b7e6-6650d60eb0fa/bin/utaipan-WLngWcDbfI/data/24e7b328f/61cbc563c6044996a2c0fe197ac22487/FLAG4125a3341 [2021-10-11 02:22:15,250 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:22:15,254 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04e48dae-9543-4a4d-b7e6-6650d60eb0fa/sv-benchmarks/c/float-newlib/float_req_bl_0620a.c [2021-10-11 02:22:15,266 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04e48dae-9543-4a4d-b7e6-6650d60eb0fa/bin/utaipan-WLngWcDbfI/data/24e7b328f/61cbc563c6044996a2c0fe197ac22487/FLAG4125a3341 [2021-10-11 02:22:15,596 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04e48dae-9543-4a4d-b7e6-6650d60eb0fa/bin/utaipan-WLngWcDbfI/data/24e7b328f/61cbc563c6044996a2c0fe197ac22487 [2021-10-11 02:22:15,599 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:22:15,602 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:22:15,607 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:22:15,608 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:22:15,612 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:22:15,614 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:22:15" (1/1) ... [2021-10-11 02:22:15,616 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79d0878a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:15, skipping insertion in model container [2021-10-11 02:22:15,617 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:22:15" (1/1) ... [2021-10-11 02:22:15,626 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:22:15,663 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:22:15,977 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04e48dae-9543-4a4d-b7e6-6650d60eb0fa/sv-benchmarks/c/float-newlib/float_req_bl_0620a.c[3328,3341] [2021-10-11 02:22:15,982 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:22:16,027 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:22:16,127 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04e48dae-9543-4a4d-b7e6-6650d60eb0fa/sv-benchmarks/c/float-newlib/float_req_bl_0620a.c[3328,3341] [2021-10-11 02:22:16,130 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:22:16,164 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:22:16,164 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:16 WrapperNode [2021-10-11 02:22:16,165 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:22:16,170 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:22:16,170 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:22:16,170 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:22:16,180 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:16" (1/1) ... [2021-10-11 02:22:16,213 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:16" (1/1) ... [2021-10-11 02:22:16,271 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:22:16,276 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:22:16,277 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:22:16,278 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:22:16,288 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:16" (1/1) ... [2021-10-11 02:22:16,288 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:16" (1/1) ... [2021-10-11 02:22:16,318 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:16" (1/1) ... [2021-10-11 02:22:16,318 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:16" (1/1) ... [2021-10-11 02:22:16,334 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:16" (1/1) ... [2021-10-11 02:22:16,351 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:16" (1/1) ... [2021-10-11 02:22:16,355 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:16" (1/1) ... [2021-10-11 02:22:16,366 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:22:16,367 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:22:16,368 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:22:16,369 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:22:16,370 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:16" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04e48dae-9543-4a4d-b7e6-6650d60eb0fa/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:22:16,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4 [2021-10-11 02:22:16,474 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-11 02:22:16,474 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:22:16,475 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2021-10-11 02:22:16,475 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-11 02:22:16,475 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:22:16,475 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:22:16,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2021-10-11 02:22:16,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-11 02:22:16,476 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-11 02:22:30,243 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:22:30,243 INFO L299 CfgBuilder]: Removed 18 assume(true) statements. [2021-10-11 02:22:30,245 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:22:30 BoogieIcfgContainer [2021-10-11 02:22:30,245 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:22:30,250 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:22:30,250 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:22:30,253 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:22:30,253 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:22:15" (1/3) ... [2021-10-11 02:22:30,254 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c6e9e6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:22:30, skipping insertion in model container [2021-10-11 02:22:30,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:16" (2/3) ... [2021-10-11 02:22:30,255 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c6e9e6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:22:30, skipping insertion in model container [2021-10-11 02:22:30,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:22:30" (3/3) ... [2021-10-11 02:22:30,257 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0620a.c [2021-10-11 02:22:30,276 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:22:30,280 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:22:30,291 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 02:22:30,331 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:22:30,332 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:22:30,332 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:22:30,332 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:22:30,333 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:22:30,333 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:22:30,334 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:22:30,334 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:22:30,348 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2021-10-11 02:22:30,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-11 02:22:30,354 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:22:30,355 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:22:30,356 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:22:30,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:22:30,362 INFO L82 PathProgramCache]: Analyzing trace with hash 1030429181, now seen corresponding path program 1 times [2021-10-11 02:22:30,377 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:22:30,378 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [875096746] [2021-10-11 02:22:30,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04e48dae-9543-4a4d-b7e6-6650d60eb0fa/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2021-10-11 02:22:31,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:22:31,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-11 02:22:31,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:22:31,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:22:31,354 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:22:31,355 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [875096746] [2021-10-11 02:22:31,356 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:22:31,356 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:22:31,357 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669554934] [2021-10-11 02:22:31,361 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-10-11 02:22:31,361 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:22:31,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-11 02:22:31,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 02:22:31,376 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 2 states. [2021-10-11 02:22:31,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:22:31,395 INFO L93 Difference]: Finished difference Result 72 states and 112 transitions. [2021-10-11 02:22:31,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-11 02:22:31,396 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2021-10-11 02:22:31,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:22:31,405 INFO L225 Difference]: With dead ends: 72 [2021-10-11 02:22:31,405 INFO L226 Difference]: Without dead ends: 34 [2021-10-11 02:22:31,407 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 02:22:31,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-10-11 02:22:31,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2021-10-11 02:22:31,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2021-10-11 02:22:31,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 45 transitions. [2021-10-11 02:22:31,439 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 45 transitions. Word has length 10 [2021-10-11 02:22:31,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:22:31,439 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 45 transitions. [2021-10-11 02:22:31,439 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-10-11 02:22:31,439 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 45 transitions. [2021-10-11 02:22:31,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-11 02:22:31,440 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:22:31,440 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:22:31,666 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2021-10-11 02:22:31,666 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:22:31,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:22:31,667 INFO L82 PathProgramCache]: Analyzing trace with hash -1304878016, now seen corresponding path program 1 times [2021-10-11 02:22:31,668 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:22:31,668 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1791259185] [2021-10-11 02:22:31,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04e48dae-9543-4a4d-b7e6-6650d60eb0fa/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2021-10-11 02:22:32,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:22:32,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-11 02:22:32,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:22:32,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:22:32,755 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:22:32,755 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1791259185] [2021-10-11 02:22:32,755 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:22:32,755 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-11 02:22:32,755 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180387071] [2021-10-11 02:22:32,756 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:22:32,757 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:22:32,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:22:32,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:22:32,758 INFO L87 Difference]: Start difference. First operand 34 states and 45 transitions. Second operand 5 states. [2021-10-11 02:22:39,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:22:39,841 INFO L93 Difference]: Finished difference Result 57 states and 70 transitions. [2021-10-11 02:22:39,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:22:39,842 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2021-10-11 02:22:39,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:22:39,843 INFO L225 Difference]: With dead ends: 57 [2021-10-11 02:22:39,843 INFO L226 Difference]: Without dead ends: 32 [2021-10-11 02:22:39,844 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:22:39,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-10-11 02:22:39,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 23. [2021-10-11 02:22:39,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2021-10-11 02:22:39,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2021-10-11 02:22:39,849 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 11 [2021-10-11 02:22:39,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:22:39,850 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2021-10-11 02:22:39,850 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:22:39,850 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2021-10-11 02:22:39,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-11 02:22:39,851 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:22:39,851 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:22:40,058 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2021-10-11 02:22:40,058 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:22:40,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:22:40,059 INFO L82 PathProgramCache]: Analyzing trace with hash -413875709, now seen corresponding path program 1 times [2021-10-11 02:22:40,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:22:40,060 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1786976961] [2021-10-11 02:22:40,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04e48dae-9543-4a4d-b7e6-6650d60eb0fa/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2021-10-11 02:22:40,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:22:41,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-11 02:22:41,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:22:41,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:22:41,237 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:22:41,237 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1786976961] [2021-10-11 02:22:41,237 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:22:41,237 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-11 02:22:41,237 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750767932] [2021-10-11 02:22:41,238 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:22:41,238 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:22:41,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:22:41,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:22:41,239 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand 5 states. [2021-10-11 02:22:50,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:22:50,261 INFO L93 Difference]: Finished difference Result 35 states and 37 transitions. [2021-10-11 02:22:50,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 02:22:50,262 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2021-10-11 02:22:50,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:22:50,263 INFO L225 Difference]: With dead ends: 35 [2021-10-11 02:22:50,263 INFO L226 Difference]: Without dead ends: 32 [2021-10-11 02:22:50,264 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:22:50,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-10-11 02:22:50,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 25. [2021-10-11 02:22:50,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2021-10-11 02:22:50,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2021-10-11 02:22:50,270 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 13 [2021-10-11 02:22:50,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:22:50,271 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2021-10-11 02:22:50,271 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:22:50,271 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2021-10-11 02:22:50,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-11 02:22:50,272 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:22:50,272 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:22:50,472 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2021-10-11 02:22:50,473 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:22:50,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:22:50,473 INFO L82 PathProgramCache]: Analyzing trace with hash 1848532469, now seen corresponding path program 1 times [2021-10-11 02:22:50,474 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:22:50,474 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1343711267] [2021-10-11 02:22:50,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04e48dae-9543-4a4d-b7e6-6650d60eb0fa/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2021-10-11 02:22:52,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:22:52,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-11 02:22:52,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:22:52,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:22:52,771 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:22:52,771 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1343711267] [2021-10-11 02:22:52,772 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:22:52,772 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:22:52,772 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575417135] [2021-10-11 02:22:52,773 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:22:52,773 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:22:52,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:22:52,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:22:52,774 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand 4 states. [2021-10-11 02:22:52,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:22:52,870 INFO L93 Difference]: Finished difference Result 32 states and 34 transitions. [2021-10-11 02:22:52,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:22:52,876 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2021-10-11 02:22:52,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:22:52,876 INFO L225 Difference]: With dead ends: 32 [2021-10-11 02:22:52,877 INFO L226 Difference]: Without dead ends: 18 [2021-10-11 02:22:52,877 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:22:52,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-10-11 02:22:52,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-10-11 02:22:52,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-10-11 02:22:52,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 17 transitions. [2021-10-11 02:22:52,881 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 17 transitions. Word has length 16 [2021-10-11 02:22:52,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:22:52,881 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 17 transitions. [2021-10-11 02:22:52,881 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:22:52,882 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 17 transitions. [2021-10-11 02:22:52,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-11 02:22:52,882 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:22:52,882 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:22:53,102 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2021-10-11 02:22:53,102 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:22:53,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:22:53,103 INFO L82 PathProgramCache]: Analyzing trace with hash 712330328, now seen corresponding path program 1 times [2021-10-11 02:22:53,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:22:53,103 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1593213212] [2021-10-11 02:22:53,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04e48dae-9543-4a4d-b7e6-6650d60eb0fa/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2021-10-11 02:22:54,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:22:54,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-11 02:22:54,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:22:54,428 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-10-11 02:22:54,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:22:54,697 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:22:54,697 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1593213212] [2021-10-11 02:22:54,698 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:22:54,698 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-11 02:22:54,698 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636959329] [2021-10-11 02:22:54,699 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-10-11 02:22:54,699 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:22:54,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-11 02:22:54,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-10-11 02:22:54,700 INFO L87 Difference]: Start difference. First operand 18 states and 17 transitions. Second operand 9 states. [2021-10-11 02:22:55,551 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2021-10-11 02:22:55,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:22:55,563 INFO L93 Difference]: Finished difference Result 18 states and 17 transitions. [2021-10-11 02:22:55,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-11 02:22:55,564 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 17 [2021-10-11 02:22:55,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:22:55,564 INFO L225 Difference]: With dead ends: 18 [2021-10-11 02:22:55,564 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:22:55,565 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2021-10-11 02:22:55,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:22:55,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:22:55,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:22:55,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:22:55,566 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2021-10-11 02:22:55,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:22:55,566 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:22:55,567 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-10-11 02:22:55,567 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:22:55,567 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:22:55,782 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2021-10-11 02:22:55,783 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-11 02:22:56,060 WARN L197 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 33 [2021-10-11 02:22:56,170 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2021-10-11 02:22:56,352 WARN L197 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2021-10-11 02:22:56,452 INFO L262 CegarLoopResult]: For program point L143(line 143) no Hoare annotation was computed. [2021-10-11 02:22:56,452 INFO L262 CegarLoopResult]: For program point L143-2(lines 143 146) no Hoare annotation was computed. [2021-10-11 02:22:56,452 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-11 02:22:56,452 INFO L262 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-11 02:22:56,453 INFO L258 CegarLoopResult]: At program point L28(lines 16 29) the Hoare annotation is: false [2021-10-11 02:22:56,453 INFO L262 CegarLoopResult]: For program point L144(line 144) no Hoare annotation was computed. [2021-10-11 02:22:56,453 INFO L262 CegarLoopResult]: For program point L111(lines 111 116) no Hoare annotation was computed. [2021-10-11 02:22:56,453 INFO L258 CegarLoopResult]: At program point L128(lines 119 129) the Hoare annotation is: (and (= (_ +zero 8 24) |ULTIMATE.start_atan_float_#res|) (= (_ +zero 8 24) ULTIMATE.start_main_~res~0) (= ULTIMATE.start_atan_float_~x (_ +zero 8 24)) (= currentRoundingMode roundNearestTiesToEven) (= ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1.0)) ~one_atan~0) (= ~huge_atan~0 ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1000000000000000000000000000000.0))) (= (_ +zero 8 24) (fp ((_ extract 31 31) ULTIMATE.start___signbit_float_~w~1) ((_ extract 30 23) ULTIMATE.start___signbit_float_~w~1) ((_ extract 22 0) ULTIMATE.start___signbit_float_~w~1))) (= (_ +zero 8 24) ULTIMATE.start___signbit_float_~x) |ULTIMATE.start_main_#t~short32| (= |ULTIMATE.start___signbit_float_#res| (_ bv0 32))) [2021-10-11 02:22:56,453 INFO L262 CegarLoopResult]: For program point L122-1(lines 122 126) no Hoare annotation was computed. [2021-10-11 02:22:56,454 INFO L258 CegarLoopResult]: At program point L122-2(lines 122 126) the Hoare annotation is: (and (= (_ +zero 8 24) |ULTIMATE.start_atan_float_#res|) (= (_ +zero 8 24) ULTIMATE.start_main_~res~0) (= ULTIMATE.start_atan_float_~x (_ +zero 8 24)) (= currentRoundingMode roundNearestTiesToEven) (= ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1.0)) ~one_atan~0) (= ~huge_atan~0 ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1000000000000000000000000000000.0))) (= (_ +zero 8 24) ULTIMATE.start___signbit_float_~x) |ULTIMATE.start_main_#t~short32|) [2021-10-11 02:22:56,459 INFO L262 CegarLoopResult]: For program point L23(lines 23 27) no Hoare annotation was computed. [2021-10-11 02:22:56,462 INFO L262 CegarLoopResult]: For program point L122-3(lines 122 126) no Hoare annotation was computed. [2021-10-11 02:22:56,462 INFO L262 CegarLoopResult]: For program point L23-1(lines 16 29) no Hoare annotation was computed. [2021-10-11 02:22:56,463 INFO L262 CegarLoopResult]: For program point L23-2(lines 23 27) no Hoare annotation was computed. [2021-10-11 02:22:56,463 INFO L262 CegarLoopResult]: For program point L81(lines 81 97) no Hoare annotation was computed. [2021-10-11 02:22:56,463 INFO L262 CegarLoopResult]: For program point L73(lines 73 98) no Hoare annotation was computed. [2021-10-11 02:22:56,463 INFO L262 CegarLoopResult]: For program point L65(lines 65 72) no Hoare annotation was computed. [2021-10-11 02:22:56,463 INFO L262 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-11 02:22:56,464 INFO L262 CegarLoopResult]: For program point L90(lines 90 96) no Hoare annotation was computed. [2021-10-11 02:22:56,464 INFO L262 CegarLoopResult]: For program point L90-2(lines 73 98) no Hoare annotation was computed. [2021-10-11 02:22:56,464 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 144) no Hoare annotation was computed. [2021-10-11 02:22:56,464 INFO L265 CegarLoopResult]: At program point L148(lines 131 149) the Hoare annotation is: true [2021-10-11 02:22:56,464 INFO L262 CegarLoopResult]: For program point L115(line 115) no Hoare annotation was computed. [2021-10-11 02:22:56,465 INFO L262 CegarLoopResult]: For program point L82(lines 82 88) no Hoare annotation was computed. [2021-10-11 02:22:56,465 INFO L262 CegarLoopResult]: For program point L115-2(line 115) no Hoare annotation was computed. [2021-10-11 02:22:56,465 INFO L258 CegarLoopResult]: At program point L115-3(lines 55 117) the Hoare annotation is: (and (= (_ +zero 8 24) |ULTIMATE.start_atan_float_#res|) (= ULTIMATE.start_atan_float_~x (_ +zero 8 24)) (= currentRoundingMode roundNearestTiesToEven) (= ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1.0)) ~one_atan~0) (= ~huge_atan~0 ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1000000000000000000000000000000.0)))) [2021-10-11 02:22:56,465 INFO L262 CegarLoopResult]: For program point L74(lines 74 77) no Hoare annotation was computed. [2021-10-11 02:22:56,466 INFO L262 CegarLoopResult]: For program point L74-2(lines 74 77) no Hoare annotation was computed. [2021-10-11 02:22:56,466 INFO L262 CegarLoopResult]: For program point L66(lines 66 67) no Hoare annotation was computed. [2021-10-11 02:22:56,466 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-11 02:22:56,468 INFO L262 CegarLoopResult]: For program point L75(lines 75 76) no Hoare annotation was computed. [2021-10-11 02:22:56,468 INFO L262 CegarLoopResult]: For program point L59-1(lines 59 63) no Hoare annotation was computed. [2021-10-11 02:22:56,468 INFO L258 CegarLoopResult]: At program point L59-2(lines 59 63) the Hoare annotation is: (and (= ULTIMATE.start_atan_float_~x (_ +zero 8 24)) (= currentRoundingMode roundNearestTiesToEven) (= ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1.0)) ~one_atan~0) (= ~huge_atan~0 ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1000000000000000000000000000000.0)))) [2021-10-11 02:22:56,468 INFO L262 CegarLoopResult]: For program point L59-3(lines 59 63) no Hoare annotation was computed. [2021-10-11 02:22:56,468 INFO L262 CegarLoopResult]: For program point L18-1(lines 18 22) no Hoare annotation was computed. [2021-10-11 02:22:56,469 INFO L258 CegarLoopResult]: At program point L18-2(lines 18 22) the Hoare annotation is: false [2021-10-11 02:22:56,469 INFO L262 CegarLoopResult]: For program point L68(lines 68 71) no Hoare annotation was computed. [2021-10-11 02:22:56,480 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-11 02:22:56,487 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-11 02:22:56,491 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-11 02:22:56,492 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-11 02:22:56,494 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-11 02:22:56,496 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-11 02:22:56,497 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-11 02:22:56,510 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-11 02:22:56,513 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:22:56 BoogieIcfgContainer [2021-10-11 02:22:56,514 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:22:56,515 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:22:56,515 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:22:56,516 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:22:56,516 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:22:30" (3/4) ... [2021-10-11 02:22:56,519 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:22:56,537 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2021-10-11 02:22:56,538 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-10-11 02:22:56,538 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:22:56,539 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:22:56,571 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((~Pluszero~LONGDOUBLE() == \result && x == ~Pluszero~LONGDOUBLE()) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0)) == one_atan) && huge_atan == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0E30)) [2021-10-11 02:22:56,573 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((~Pluszero~LONGDOUBLE() == \result && ~Pluszero~LONGDOUBLE() == res) && x == ~Pluszero~LONGDOUBLE()) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0)) == one_atan) && huge_atan == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0E30))) && ~Pluszero~LONGDOUBLE() == x) && aux-res == 0.0f && __signbit_float(res) == 0-aux [2021-10-11 02:22:56,573 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((~Pluszero~LONGDOUBLE() == \result && ~Pluszero~LONGDOUBLE() == res) && x == ~Pluszero~LONGDOUBLE()) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0)) == one_atan) && huge_atan == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0E30))) && ~Pluszero~LONGDOUBLE() == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && ~Pluszero~LONGDOUBLE() == x) && aux-res == 0.0f && __signbit_float(res) == 0-aux) && \result == 0bv32 [2021-10-11 02:22:56,633 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04e48dae-9543-4a4d-b7e6-6650d60eb0fa/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:22:56,634 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:22:56,635 INFO L168 Benchmark]: Toolchain (without parser) took 41031.82 ms. Allocated memory was 65.0 MB in the beginning and 96.5 MB in the end (delta: 31.5 MB). Free memory was 45.5 MB in the beginning and 37.2 MB in the end (delta: 8.3 MB). Peak memory consumption was 40.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:22:56,635 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 65.0 MB. Free memory is still 47.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:22:56,635 INFO L168 Benchmark]: CACSL2BoogieTranslator took 557.71 ms. Allocated memory is still 65.0 MB. Free memory was 45.4 MB in the beginning and 45.3 MB in the end (delta: 54.0 kB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:22:56,636 INFO L168 Benchmark]: Boogie Procedure Inliner took 105.75 ms. Allocated memory is still 65.0 MB. Free memory was 45.1 MB in the beginning and 42.9 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:22:56,636 INFO L168 Benchmark]: Boogie Preprocessor took 89.63 ms. Allocated memory is still 65.0 MB. Free memory was 42.9 MB in the beginning and 40.6 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:22:56,637 INFO L168 Benchmark]: RCFGBuilder took 13877.97 ms. Allocated memory was 65.0 MB in the beginning and 96.5 MB in the end (delta: 31.5 MB). Free memory was 40.6 MB in the beginning and 59.8 MB in the end (delta: -19.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-11 02:22:56,637 INFO L168 Benchmark]: TraceAbstraction took 26264.82 ms. Allocated memory is still 96.5 MB. Free memory was 59.4 MB in the beginning and 42.7 MB in the end (delta: 16.7 MB). Peak memory consumption was 16.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:22:56,638 INFO L168 Benchmark]: Witness Printer took 118.53 ms. Allocated memory is still 96.5 MB. Free memory was 42.7 MB in the beginning and 37.2 MB in the end (delta: 5.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-11 02:22:56,641 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 65.0 MB. Free memory is still 47.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 557.71 ms. Allocated memory is still 65.0 MB. Free memory was 45.4 MB in the beginning and 45.3 MB in the end (delta: 54.0 kB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 105.75 ms. Allocated memory is still 65.0 MB. Free memory was 45.1 MB in the beginning and 42.9 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 89.63 ms. Allocated memory is still 65.0 MB. Free memory was 42.9 MB in the beginning and 40.6 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 13877.97 ms. Allocated memory was 65.0 MB in the beginning and 96.5 MB in the end (delta: 31.5 MB). Free memory was 40.6 MB in the beginning and 59.8 MB in the end (delta: -19.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 26264.82 ms. Allocated memory is still 96.5 MB. Free memory was 59.4 MB in the beginning and 42.7 MB in the end (delta: 16.7 MB). Peak memory consumption was 16.4 MB. Max. memory is 16.1 GB. * Witness Printer took 118.53 ms. Allocated memory is still 96.5 MB. Free memory was 42.7 MB in the beginning and 37.2 MB in the end (delta: 5.5 MB). Peak memory consumption was 6.3 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 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 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 144]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 55]: Loop Invariant [2021-10-11 02:22:56,649 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-11 02:22:56,650 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: (((~Pluszero~LONGDOUBLE() == \result && x == ~Pluszero~LONGDOUBLE()) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0)) == one_atan) && huge_atan == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0E30)) - InvariantResult [Line: 119]: Loop Invariant [2021-10-11 02:22:56,653 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-11 02:22:56,654 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: ((((((((~Pluszero~LONGDOUBLE() == \result && ~Pluszero~LONGDOUBLE() == res) && x == ~Pluszero~LONGDOUBLE()) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0)) == one_atan) && huge_atan == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0E30))) && ~Pluszero~LONGDOUBLE() == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && ~Pluszero~LONGDOUBLE() == x) && aux-res == 0.0f && __signbit_float(res) == 0-aux) && \result == 0bv32 - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 122]: Loop Invariant [2021-10-11 02:22:56,658 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-11 02:22:56,666 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: ((((((~Pluszero~LONGDOUBLE() == \result && ~Pluszero~LONGDOUBLE() == res) && x == ~Pluszero~LONGDOUBLE()) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0)) == one_atan) && huge_atan == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0E30))) && ~Pluszero~LONGDOUBLE() == x) && aux-res == 0.0f && __signbit_float(res) == 0-aux - InvariantResult [Line: 59]: Loop Invariant [2021-10-11 02:22:56,667 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-11 02:22:56,668 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: ((x == ~Pluszero~LONGDOUBLE() && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0)) == one_atan) && huge_atan == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0E30)) - InvariantResult [Line: 131]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 37 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 25.4s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 17.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 111 SDtfs, 123 SDslu, 128 SDs, 0 SdLazy, 61 SolverSat, 10 SolverUnsat, 7 SolverUnknown, 0 SolverNotchecked, 15.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 71 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 16 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 12 NumberOfFragments, 122 HoareAnnotationTreeSize, 7 FomulaSimplifications, 20 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 5.1s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 67 NumberOfCodeBlocks, 67 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 62 ConstructedInterpolants, 1 QuantifiedInterpolants, 4291 SizeOfPredicates, 28 NumberOfNonLiveVariables, 513 ConjunctsInSsa, 37 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...