./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_0620b.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f941ee0f-f462-4b1a-9048-1c70c40165a4/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f941ee0f-f462-4b1a-9048-1c70c40165a4/bin/utaipan-SDwSMHVbGG/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f941ee0f-f462-4b1a-9048-1c70c40165a4/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f941ee0f-f462-4b1a-9048-1c70c40165a4/bin/utaipan-SDwSMHVbGG/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0620b.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f941ee0f-f462-4b1a-9048-1c70c40165a4/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f941ee0f-f462-4b1a-9048-1c70c40165a4/bin/utaipan-SDwSMHVbGG --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 075a76806290abf75c2d2bbc3aed8400bd808fbae1a9b71a2d432aac31dd29da ..................................................................................................................................................................................................................................................................................................................................... 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_f941ee0f-f462-4b1a-9048-1c70c40165a4/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f941ee0f-f462-4b1a-9048-1c70c40165a4/bin/utaipan-SDwSMHVbGG/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f941ee0f-f462-4b1a-9048-1c70c40165a4/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f941ee0f-f462-4b1a-9048-1c70c40165a4/bin/utaipan-SDwSMHVbGG/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0620b.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f941ee0f-f462-4b1a-9048-1c70c40165a4/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f941ee0f-f462-4b1a-9048-1c70c40165a4/bin/utaipan-SDwSMHVbGG --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 075a76806290abf75c2d2bbc3aed8400bd808fbae1a9b71a2d432aac31dd29da ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-29 04:49:01,972 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 04:49:01,974 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 04:49:02,043 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 04:49:02,044 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 04:49:02,046 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 04:49:02,048 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 04:49:02,051 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 04:49:02,054 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 04:49:02,056 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 04:49:02,058 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 04:49:02,059 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 04:49:02,060 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 04:49:02,062 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 04:49:02,064 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 04:49:02,067 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 04:49:02,068 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 04:49:02,070 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 04:49:02,073 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 04:49:02,077 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 04:49:02,080 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 04:49:02,082 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 04:49:02,084 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 04:49:02,086 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 04:49:02,091 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 04:49:02,092 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 04:49:02,093 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 04:49:02,094 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 04:49:02,095 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 04:49:02,097 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 04:49:02,097 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 04:49:02,099 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 04:49:02,100 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 04:49:02,102 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 04:49:02,113 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 04:49:02,114 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 04:49:02,115 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 04:49:02,116 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 04:49:02,116 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 04:49:02,117 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 04:49:02,118 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 04:49:02,120 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f941ee0f-f462-4b1a-9048-1c70c40165a4/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-29 04:49:02,173 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 04:49:02,175 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 04:49:02,176 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 04:49:02,177 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 04:49:02,177 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 04:49:02,177 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 04:49:02,178 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-29 04:49:02,178 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 04:49:02,178 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 04:49:02,178 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-29 04:49:02,186 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-29 04:49:02,187 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 04:49:02,187 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-29 04:49:02,187 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-29 04:49:02,188 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-29 04:49:02,188 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 04:49:02,189 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 04:49:02,189 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 04:49:02,189 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 04:49:02,190 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 04:49:02,190 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 04:49:02,190 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 04:49:02,190 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 04:49:02,191 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 04:49:02,191 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 04:49:02,191 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 04:49:02,191 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 04:49:02,192 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 04:49:02,192 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 04:49:02,194 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 04:49:02,194 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 04:49:02,194 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 04:49:02,195 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 04:49:02,195 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 04:49:02,195 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-29 04:49:02,196 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-29 04:49:02,196 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 04:49:02,196 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 04:49:02,196 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 04:49:02,197 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_f941ee0f-f462-4b1a-9048-1c70c40165a4/bin/utaipan-SDwSMHVbGG/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f941ee0f-f462-4b1a-9048-1c70c40165a4/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 075a76806290abf75c2d2bbc3aed8400bd808fbae1a9b71a2d432aac31dd29da [2021-10-29 04:49:02,555 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 04:49:02,579 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 04:49:02,581 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 04:49:02,583 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 04:49:02,584 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 04:49:02,585 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f941ee0f-f462-4b1a-9048-1c70c40165a4/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/float-newlib/float_req_bl_0620b.c [2021-10-29 04:49:02,655 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f941ee0f-f462-4b1a-9048-1c70c40165a4/bin/utaipan-SDwSMHVbGG/data/d706b522f/6a186044a06c4e33aef7dcd62a4170be/FLAG27403589a [2021-10-29 04:49:03,289 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 04:49:03,294 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f941ee0f-f462-4b1a-9048-1c70c40165a4/sv-benchmarks/c/float-newlib/float_req_bl_0620b.c [2021-10-29 04:49:03,308 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f941ee0f-f462-4b1a-9048-1c70c40165a4/bin/utaipan-SDwSMHVbGG/data/d706b522f/6a186044a06c4e33aef7dcd62a4170be/FLAG27403589a [2021-10-29 04:49:03,564 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f941ee0f-f462-4b1a-9048-1c70c40165a4/bin/utaipan-SDwSMHVbGG/data/d706b522f/6a186044a06c4e33aef7dcd62a4170be [2021-10-29 04:49:03,568 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 04:49:03,571 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 04:49:03,577 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 04:49:03,578 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 04:49:03,583 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 04:49:03,585 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:49:03" (1/1) ... [2021-10-29 04:49:03,588 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@eeb3d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:49:03, skipping insertion in model container [2021-10-29 04:49:03,588 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:49:03" (1/1) ... [2021-10-29 04:49:03,597 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 04:49:03,644 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 04:49:03,879 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f941ee0f-f462-4b1a-9048-1c70c40165a4/sv-benchmarks/c/float-newlib/float_req_bl_0620b.c[3330,3343] [2021-10-29 04:49:03,883 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 04:49:03,894 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 04:49:03,939 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f941ee0f-f462-4b1a-9048-1c70c40165a4/sv-benchmarks/c/float-newlib/float_req_bl_0620b.c[3330,3343] [2021-10-29 04:49:03,940 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 04:49:03,960 INFO L208 MainTranslator]: Completed translation [2021-10-29 04:49:03,960 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:49:03 WrapperNode [2021-10-29 04:49:03,960 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 04:49:03,962 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 04:49:03,962 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 04:49:03,962 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 04:49:03,971 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:49:03" (1/1) ... [2021-10-29 04:49:03,984 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:49:03" (1/1) ... [2021-10-29 04:49:04,016 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 04:49:04,017 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 04:49:04,017 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 04:49:04,018 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 04:49:04,027 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:49:03" (1/1) ... [2021-10-29 04:49:04,027 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:49:03" (1/1) ... [2021-10-29 04:49:04,033 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:49:03" (1/1) ... [2021-10-29 04:49:04,033 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:49:03" (1/1) ... [2021-10-29 04:49:04,045 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:49:03" (1/1) ... [2021-10-29 04:49:04,051 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:49:03" (1/1) ... [2021-10-29 04:49:04,053 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:49:03" (1/1) ... [2021-10-29 04:49:04,057 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 04:49:04,057 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 04:49:04,058 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 04:49:04,058 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 04:49:04,060 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:49:03" (1/1) ... [2021-10-29 04:49:04,071 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 04:49:04,081 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f941ee0f-f462-4b1a-9048-1c70c40165a4/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 04:49:04,094 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f941ee0f-f462-4b1a-9048-1c70c40165a4/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 04:49:04,097 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f941ee0f-f462-4b1a-9048-1c70c40165a4/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 04:49:04,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-29 04:49:04,134 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 04:49:04,134 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-10-29 04:49:04,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-29 04:49:04,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-10-29 04:49:04,135 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 04:49:04,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 04:49:04,135 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-29 04:49:04,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2021-10-29 04:49:04,135 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-29 04:49:04,819 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 04:49:04,819 INFO L299 CfgBuilder]: Removed 18 assume(true) statements. [2021-10-29 04:49:04,823 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:49:04 BoogieIcfgContainer [2021-10-29 04:49:04,823 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 04:49:04,825 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 04:49:04,825 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 04:49:04,829 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 04:49:04,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 04:49:03" (1/3) ... [2021-10-29 04:49:04,843 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@710d25b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:49:04, skipping insertion in model container [2021-10-29 04:49:04,843 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:49:03" (2/3) ... [2021-10-29 04:49:04,844 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@710d25b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:49:04, skipping insertion in model container [2021-10-29 04:49:04,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:49:04" (3/3) ... [2021-10-29 04:49:04,846 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0620b.c [2021-10-29 04:49:04,855 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 04:49:04,856 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-29 04:49:04,945 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 04:49:04,951 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-29 04:49:04,952 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-29 04:49:04,970 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 24 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:49:04,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-29 04:49:04,977 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:49:04,978 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:49:04,978 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:49:04,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:49:04,986 INFO L85 PathProgramCache]: Analyzing trace with hash -851122785, now seen corresponding path program 1 times [2021-10-29 04:49:04,998 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:49:04,998 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4859402] [2021-10-29 04:49:04,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:49:05,000 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:49:05,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:49:05,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:49:05,182 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 04:49:05,182 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4859402] [2021-10-29 04:49:05,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4859402] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 04:49:05,183 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:49:05,184 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-29 04:49:05,185 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166539691] [2021-10-29 04:49:05,191 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-29 04:49:05,191 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 04:49:05,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-29 04:49:05,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-29 04:49:05,208 INFO L87 Difference]: Start difference. First operand has 25 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 24 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:49:05,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:49:05,225 INFO L93 Difference]: Finished difference Result 49 states and 75 transitions. [2021-10-29 04:49:05,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-29 04:49:05,227 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-29 04:49:05,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:49:05,235 INFO L225 Difference]: With dead ends: 49 [2021-10-29 04:49:05,235 INFO L226 Difference]: Without dead ends: 23 [2021-10-29 04:49:05,238 INFO L786 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 [2021-10-29 04:49:05,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-10-29 04:49:05,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-10-29 04:49:05,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 22 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:49:05,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2021-10-29 04:49:05,270 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 8 [2021-10-29 04:49:05,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:49:05,270 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2021-10-29 04:49:05,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:49:05,271 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2021-10-29 04:49:05,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-29 04:49:05,271 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:49:05,272 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:49:05,272 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-29 04:49:05,272 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:49:05,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:49:05,273 INFO L85 PathProgramCache]: Analyzing trace with hash 398666666, now seen corresponding path program 1 times [2021-10-29 04:49:05,274 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:49:05,274 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912192544] [2021-10-29 04:49:05,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:49:05,275 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:49:05,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 04:49:05,368 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 04:49:05,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 04:49:05,493 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-29 04:49:05,493 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-29 04:49:05,501 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 04:49:05,504 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-29 04:49:05,508 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1] [2021-10-29 04:49:05,512 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 04:49:05,568 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 04:49:05 BoogieIcfgContainer [2021-10-29 04:49:05,570 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 04:49:05,572 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 04:49:05,572 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 04:49:05,573 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 04:49:05,574 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:49:04" (3/4) ... [2021-10-29 04:49:05,579 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-29 04:49:05,579 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 04:49:05,583 INFO L168 Benchmark]: Toolchain (without parser) took 2009.89 ms. Allocated memory was 104.9 MB in the beginning and 140.5 MB in the end (delta: 35.7 MB). Free memory was 75.6 MB in the beginning and 86.1 MB in the end (delta: -10.5 MB). Peak memory consumption was 25.0 MB. Max. memory is 16.1 GB. [2021-10-29 04:49:05,584 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 104.9 MB. Free memory was 57.6 MB in the beginning and 57.4 MB in the end (delta: 117.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 04:49:05,587 INFO L168 Benchmark]: CACSL2BoogieTranslator took 383.38 ms. Allocated memory is still 104.9 MB. Free memory was 75.3 MB in the beginning and 76.8 MB in the end (delta: -1.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-29 04:49:05,589 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.09 ms. Allocated memory is still 104.9 MB. Free memory was 76.8 MB in the beginning and 74.7 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 04:49:05,598 INFO L168 Benchmark]: Boogie Preprocessor took 39.39 ms. Allocated memory is still 104.9 MB. Free memory was 74.7 MB in the beginning and 72.8 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 04:49:05,599 INFO L168 Benchmark]: RCFGBuilder took 765.41 ms. Allocated memory is still 104.9 MB. Free memory was 72.8 MB in the beginning and 52.2 MB in the end (delta: 20.6 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2021-10-29 04:49:05,602 INFO L168 Benchmark]: TraceAbstraction took 745.38 ms. Allocated memory was 104.9 MB in the beginning and 140.5 MB in the end (delta: 35.7 MB). Free memory was 51.7 MB in the beginning and 86.8 MB in the end (delta: -35.1 MB). Peak memory consumption was 3.4 MB. Max. memory is 16.1 GB. [2021-10-29 04:49:05,602 INFO L168 Benchmark]: Witness Printer took 7.32 ms. Allocated memory is still 140.5 MB. Free memory was 86.8 MB in the beginning and 86.1 MB in the end (delta: 635.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 04:49:05,609 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 104.9 MB. Free memory was 57.6 MB in the beginning and 57.4 MB in the end (delta: 117.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 383.38 ms. Allocated memory is still 104.9 MB. Free memory was 75.3 MB in the beginning and 76.8 MB in the end (delta: -1.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 55.09 ms. Allocated memory is still 104.9 MB. Free memory was 76.8 MB in the beginning and 74.7 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 39.39 ms. Allocated memory is still 104.9 MB. Free memory was 74.7 MB in the beginning and 72.8 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 765.41 ms. Allocated memory is still 104.9 MB. Free memory was 72.8 MB in the beginning and 52.2 MB in the end (delta: 20.6 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 745.38 ms. Allocated memory was 104.9 MB in the beginning and 140.5 MB in the end (delta: 35.7 MB). Free memory was 51.7 MB in the beginning and 86.8 MB in the end (delta: -35.1 MB). Peak memory consumption was 3.4 MB. Max. memory is 16.1 GB. * Witness Printer took 7.32 ms. Allocated memory is still 140.5 MB. Free memory was 86.8 MB in the beginning and 86.1 MB in the end (delta: 635.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - 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 someUnaryFLOAToperation at line 139, 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={10:0}, atanhi_atan={5:0}, atanlo_atan={11:0}, 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={10:0}, atanhi_atan={5:0}, atanlo_atan={11:0}, 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) == 1 VAL [aT_atan={10:0}, atanhi_atan={5:0}, atanlo_atan={11:0}, 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) == 1) [L144] reach_error() VAL [aT_atan={10:0}, atanhi_atan={5:0}, atanlo_atan={11:0}, 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. OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 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, InterpolantAutomatonStates: 2, 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, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 7 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-29 04:49:05,664 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f941ee0f-f462-4b1a-9048-1c70c40165a4/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-b2eff8b [2021-10-29 04:49:08,383 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 04:49:08,385 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 04:49:08,420 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 04:49:08,421 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 04:49:08,422 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 04:49:08,425 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 04:49:08,428 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 04:49:08,430 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 04:49:08,432 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 04:49:08,433 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 04:49:08,435 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 04:49:08,436 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 04:49:08,437 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 04:49:08,439 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 04:49:08,441 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 04:49:08,443 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 04:49:08,444 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 04:49:08,447 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 04:49:08,450 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 04:49:08,453 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 04:49:08,455 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 04:49:08,457 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 04:49:08,458 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 04:49:08,463 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 04:49:08,464 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 04:49:08,464 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 04:49:08,466 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 04:49:08,467 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 04:49:08,468 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 04:49:08,469 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 04:49:08,470 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 04:49:08,471 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 04:49:08,473 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 04:49:08,474 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 04:49:08,475 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 04:49:08,476 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 04:49:08,477 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 04:49:08,477 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 04:49:08,494 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 04:49:08,495 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 04:49:08,497 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f941ee0f-f462-4b1a-9048-1c70c40165a4/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-29 04:49:08,528 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 04:49:08,529 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 04:49:08,530 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 04:49:08,530 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 04:49:08,531 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 04:49:08,531 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 04:49:08,531 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 04:49:08,531 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 04:49:08,532 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 04:49:08,533 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 04:49:08,533 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 04:49:08,533 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 04:49:08,534 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 04:49:08,534 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 04:49:08,534 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 04:49:08,535 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 04:49:08,535 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 04:49:08,536 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-29 04:49:08,536 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-29 04:49:08,536 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 04:49:08,537 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 04:49:08,537 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 04:49:08,537 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 04:49:08,538 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 04:49:08,538 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-29 04:49:08,539 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 04:49:08,539 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 04:49:08,540 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 04:49:08,540 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 04:49:08,540 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 04:49:08,541 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-29 04:49:08,541 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-29 04:49:08,542 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 04:49:08,542 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 04:49:08,542 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 04:49:08,543 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_f941ee0f-f462-4b1a-9048-1c70c40165a4/bin/utaipan-SDwSMHVbGG/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f941ee0f-f462-4b1a-9048-1c70c40165a4/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 075a76806290abf75c2d2bbc3aed8400bd808fbae1a9b71a2d432aac31dd29da [2021-10-29 04:49:08,946 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 04:49:08,969 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 04:49:08,972 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 04:49:08,974 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 04:49:08,974 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 04:49:08,975 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f941ee0f-f462-4b1a-9048-1c70c40165a4/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/float-newlib/float_req_bl_0620b.c [2021-10-29 04:49:09,060 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f941ee0f-f462-4b1a-9048-1c70c40165a4/bin/utaipan-SDwSMHVbGG/data/cf05abc96/9cd82f512ae848dea018cbe2095e91ca/FLAGec4a1cf06 [2021-10-29 04:49:09,587 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 04:49:09,588 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f941ee0f-f462-4b1a-9048-1c70c40165a4/sv-benchmarks/c/float-newlib/float_req_bl_0620b.c [2021-10-29 04:49:09,596 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f941ee0f-f462-4b1a-9048-1c70c40165a4/bin/utaipan-SDwSMHVbGG/data/cf05abc96/9cd82f512ae848dea018cbe2095e91ca/FLAGec4a1cf06 [2021-10-29 04:49:09,953 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f941ee0f-f462-4b1a-9048-1c70c40165a4/bin/utaipan-SDwSMHVbGG/data/cf05abc96/9cd82f512ae848dea018cbe2095e91ca [2021-10-29 04:49:09,955 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 04:49:09,957 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 04:49:09,959 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 04:49:09,959 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 04:49:09,963 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 04:49:09,964 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:49:09" (1/1) ... [2021-10-29 04:49:09,965 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a9def9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:49:09, skipping insertion in model container [2021-10-29 04:49:09,965 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:49:09" (1/1) ... [2021-10-29 04:49:09,973 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 04:49:09,994 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 04:49:10,221 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f941ee0f-f462-4b1a-9048-1c70c40165a4/sv-benchmarks/c/float-newlib/float_req_bl_0620b.c[3330,3343] [2021-10-29 04:49:10,244 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 04:49:10,290 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 04:49:10,343 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f941ee0f-f462-4b1a-9048-1c70c40165a4/sv-benchmarks/c/float-newlib/float_req_bl_0620b.c[3330,3343] [2021-10-29 04:49:10,344 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 04:49:10,371 INFO L208 MainTranslator]: Completed translation [2021-10-29 04:49:10,372 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:49:10 WrapperNode [2021-10-29 04:49:10,372 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 04:49:10,373 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 04:49:10,373 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 04:49:10,374 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 04:49:10,382 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:49:10" (1/1) ... [2021-10-29 04:49:10,399 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:49:10" (1/1) ... [2021-10-29 04:49:10,441 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 04:49:10,443 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 04:49:10,444 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 04:49:10,444 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 04:49:10,454 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:49:10" (1/1) ... [2021-10-29 04:49:10,454 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:49:10" (1/1) ... [2021-10-29 04:49:10,463 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:49:10" (1/1) ... [2021-10-29 04:49:10,463 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:49:10" (1/1) ... [2021-10-29 04:49:10,482 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:49:10" (1/1) ... [2021-10-29 04:49:10,489 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:49:10" (1/1) ... [2021-10-29 04:49:10,493 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:49:10" (1/1) ... [2021-10-29 04:49:10,500 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 04:49:10,501 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 04:49:10,502 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 04:49:10,502 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 04:49:10,503 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:49:10" (1/1) ... [2021-10-29 04:49:10,512 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 04:49:10,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f941ee0f-f462-4b1a-9048-1c70c40165a4/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 04:49:10,540 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f941ee0f-f462-4b1a-9048-1c70c40165a4/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 04:49:10,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f941ee0f-f462-4b1a-9048-1c70c40165a4/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 04:49:10,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4 [2021-10-29 04:49:10,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-29 04:49:10,591 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 04:49:10,592 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2021-10-29 04:49:10,592 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-29 04:49:10,592 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 04:49:10,593 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 04:49:10,593 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2021-10-29 04:49:10,593 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-29 04:49:10,593 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-29 04:49:22,535 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 04:49:22,536 INFO L299 CfgBuilder]: Removed 18 assume(true) statements. [2021-10-29 04:49:22,538 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:49:22 BoogieIcfgContainer [2021-10-29 04:49:22,539 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 04:49:22,542 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 04:49:22,543 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 04:49:22,546 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 04:49:22,547 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 04:49:09" (1/3) ... [2021-10-29 04:49:22,548 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@128242b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:49:22, skipping insertion in model container [2021-10-29 04:49:22,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:49:10" (2/3) ... [2021-10-29 04:49:22,550 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@128242b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:49:22, skipping insertion in model container [2021-10-29 04:49:22,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:49:22" (3/3) ... [2021-10-29 04:49:22,552 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0620b.c [2021-10-29 04:49:22,559 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 04:49:22,559 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-29 04:49:22,625 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 04:49:22,633 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-29 04:49:22,633 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-29 04:49:22,669 INFO L276 IsEmpty]: Start isEmpty. Operand has 37 states, 35 states have (on average 1.6285714285714286) internal successors, (57), 36 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:49:22,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-29 04:49:22,676 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:49:22,676 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:49:22,677 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:49:22,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:49:22,685 INFO L85 PathProgramCache]: Analyzing trace with hash 1030429181, now seen corresponding path program 1 times [2021-10-29 04:49:22,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 04:49:22,701 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1860472312] [2021-10-29 04:49:22,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:49:22,703 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 04:49:22,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f941ee0f-f462-4b1a-9048-1c70c40165a4/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 04:49:22,707 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f941ee0f-f462-4b1a-9048-1c70c40165a4/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 04:49:22,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f941ee0f-f462-4b1a-9048-1c70c40165a4/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-29 04:49:23,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:49:23,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-29 04:49:23,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:49:23,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:49:23,982 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:49:24,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:49:24,112 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 04:49:24,113 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1860472312] [2021-10-29 04:49:24,113 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1860472312] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 04:49:24,114 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:49:24,114 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-29 04:49:24,133 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248002426] [2021-10-29 04:49:24,140 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-29 04:49:24,140 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 04:49:24,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-29 04:49:24,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-29 04:49:24,161 INFO L87 Difference]: Start difference. First operand has 37 states, 35 states have (on average 1.6285714285714286) internal successors, (57), 36 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:49:24,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:49:24,184 INFO L93 Difference]: Finished difference Result 72 states and 112 transitions. [2021-10-29 04:49:24,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-29 04:49:24,186 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-29 04:49:24,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:49:24,198 INFO L225 Difference]: With dead ends: 72 [2021-10-29 04:49:24,198 INFO L226 Difference]: Without dead ends: 34 [2021-10-29 04:49:24,201 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-29 04:49:24,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-10-29 04:49:24,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2021-10-29 04:49:24,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.3636363636363635) internal successors, (45), 33 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:49:24,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 45 transitions. [2021-10-29 04:49:24,243 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 45 transitions. Word has length 10 [2021-10-29 04:49:24,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:49:24,244 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 45 transitions. [2021-10-29 04:49:24,244 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:49:24,244 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 45 transitions. [2021-10-29 04:49:24,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-29 04:49:24,246 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:49:24,246 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:49:24,286 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f941ee0f-f462-4b1a-9048-1c70c40165a4/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-29 04:49:24,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f941ee0f-f462-4b1a-9048-1c70c40165a4/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 04:49:24,470 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:49:24,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:49:24,472 INFO L85 PathProgramCache]: Analyzing trace with hash -1304878016, now seen corresponding path program 1 times [2021-10-29 04:49:24,473 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 04:49:24,473 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1337243790] [2021-10-29 04:49:24,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:49:24,473 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 04:49:24,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f941ee0f-f462-4b1a-9048-1c70c40165a4/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 04:49:24,477 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f941ee0f-f462-4b1a-9048-1c70c40165a4/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 04:49:24,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f941ee0f-f462-4b1a-9048-1c70c40165a4/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-29 04:49:25,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:49:25,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-29 04:49:25,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:49:25,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:49:25,818 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:49:26,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:49:26,295 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 04:49:26,295 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1337243790] [2021-10-29 04:49:26,295 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1337243790] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 04:49:26,296 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:49:26,296 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-10-29 04:49:26,296 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903656623] [2021-10-29 04:49:26,298 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-29 04:49:26,298 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 04:49:26,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-29 04:49:26,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-29 04:49:26,300 INFO L87 Difference]: Start difference. First operand 34 states and 45 transitions. Second operand has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:49:33,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:49:33,468 INFO L93 Difference]: Finished difference Result 57 states and 70 transitions. [2021-10-29 04:49:33,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-29 04:49:33,469 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-29 04:49:33,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:49:33,470 INFO L225 Difference]: With dead ends: 57 [2021-10-29 04:49:33,470 INFO L226 Difference]: Without dead ends: 32 [2021-10-29 04:49:33,471 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-10-29 04:49:33,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-10-29 04:49:33,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 23. [2021-10-29 04:49:33,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 22 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:49:33,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2021-10-29 04:49:33,475 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 11 [2021-10-29 04:49:33,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:49:33,476 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2021-10-29 04:49:33,476 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:49:33,476 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2021-10-29 04:49:33,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-29 04:49:33,477 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:49:33,477 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:49:33,542 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f941ee0f-f462-4b1a-9048-1c70c40165a4/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-10-29 04:49:33,702 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f941ee0f-f462-4b1a-9048-1c70c40165a4/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 04:49:33,702 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:49:33,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:49:33,703 INFO L85 PathProgramCache]: Analyzing trace with hash -413875709, now seen corresponding path program 1 times [2021-10-29 04:49:33,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 04:49:33,705 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [291419532] [2021-10-29 04:49:33,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:49:33,705 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 04:49:33,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f941ee0f-f462-4b1a-9048-1c70c40165a4/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 04:49:33,707 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f941ee0f-f462-4b1a-9048-1c70c40165a4/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 04:49:33,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f941ee0f-f462-4b1a-9048-1c70c40165a4/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-29 04:49:34,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:49:34,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-29 04:49:34,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:49:35,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:49:35,354 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:49:35,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:49:35,705 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 04:49:35,706 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [291419532] [2021-10-29 04:49:35,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [291419532] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 04:49:35,706 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:49:35,706 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-10-29 04:49:35,707 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709367728] [2021-10-29 04:49:35,707 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-29 04:49:35,707 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 04:49:35,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-29 04:49:35,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-29 04:49:35,709 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:49:42,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:49:42,520 INFO L93 Difference]: Finished difference Result 35 states and 37 transitions. [2021-10-29 04:49:42,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-29 04:49:42,521 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-29 04:49:42,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:49:42,523 INFO L225 Difference]: With dead ends: 35 [2021-10-29 04:49:42,523 INFO L226 Difference]: Without dead ends: 32 [2021-10-29 04:49:42,524 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-29 04:49:42,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-10-29 04:49:42,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 25. [2021-10-29 04:49:42,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 24 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:49:42,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2021-10-29 04:49:42,531 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 13 [2021-10-29 04:49:42,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:49:42,531 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2021-10-29 04:49:42,532 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:49:42,532 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2021-10-29 04:49:42,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-29 04:49:42,533 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:49:42,533 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:49:42,574 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f941ee0f-f462-4b1a-9048-1c70c40165a4/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-29 04:49:42,734 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f941ee0f-f462-4b1a-9048-1c70c40165a4/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 04:49:42,735 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:49:42,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:49:42,736 INFO L85 PathProgramCache]: Analyzing trace with hash 1848532469, now seen corresponding path program 1 times [2021-10-29 04:49:42,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 04:49:42,736 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [974971982] [2021-10-29 04:49:42,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:49:42,737 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 04:49:42,737 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f941ee0f-f462-4b1a-9048-1c70c40165a4/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 04:49:42,740 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f941ee0f-f462-4b1a-9048-1c70c40165a4/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 04:49:42,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f941ee0f-f462-4b1a-9048-1c70c40165a4/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-29 04:49:45,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:49:45,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-29 04:49:45,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:49:46,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:49:46,334 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:49:49,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:49:49,132 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 04:49:49,132 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [974971982] [2021-10-29 04:49:49,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [974971982] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 04:49:49,133 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:49:49,133 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-29 04:49:49,134 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692512386] [2021-10-29 04:49:49,134 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-29 04:49:49,135 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 04:49:49,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-29 04:49:49,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-29 04:49:49,136 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:49:49,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:49:49,315 INFO L93 Difference]: Finished difference Result 32 states and 34 transitions. [2021-10-29 04:49:49,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 04:49:49,321 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-29 04:49:49,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:49:49,322 INFO L225 Difference]: With dead ends: 32 [2021-10-29 04:49:49,322 INFO L226 Difference]: Without dead ends: 18 [2021-10-29 04:49:49,323 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-29 04:49:49,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-10-29 04:49:49,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-10-29 04:49:49,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.0) internal successors, (17), 17 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:49:49,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 17 transitions. [2021-10-29 04:49:49,327 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 17 transitions. Word has length 16 [2021-10-29 04:49:49,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:49:49,327 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 17 transitions. [2021-10-29 04:49:49,327 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:49:49,328 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 17 transitions. [2021-10-29 04:49:49,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-29 04:49:49,328 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:49:49,329 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:49:49,379 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f941ee0f-f462-4b1a-9048-1c70c40165a4/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-29 04:49:49,540 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f941ee0f-f462-4b1a-9048-1c70c40165a4/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 04:49:49,540 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:49:49,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:49:49,541 INFO L85 PathProgramCache]: Analyzing trace with hash 712330328, now seen corresponding path program 1 times [2021-10-29 04:49:49,542 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 04:49:49,542 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1433380501] [2021-10-29 04:49:49,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:49:49,543 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 04:49:49,543 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f941ee0f-f462-4b1a-9048-1c70c40165a4/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 04:49:49,544 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f941ee0f-f462-4b1a-9048-1c70c40165a4/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 04:49:49,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f941ee0f-f462-4b1a-9048-1c70c40165a4/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-29 04:49:50,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:49:50,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-29 04:49:50,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:49:51,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:49:51,690 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:49:53,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:49:53,333 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 04:49:53,333 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1433380501] [2021-10-29 04:49:53,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1433380501] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 04:49:53,333 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:49:53,334 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 14 [2021-10-29 04:49:53,334 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214292141] [2021-10-29 04:49:53,334 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-29 04:49:53,335 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 04:49:53,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-29 04:49:53,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2021-10-29 04:49:53,336 INFO L87 Difference]: Start difference. First operand 18 states and 17 transitions. Second operand has 14 states, 14 states have (on average 2.142857142857143) internal successors, (30), 14 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:49:54,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:49:54,246 INFO L93 Difference]: Finished difference Result 18 states and 17 transitions. [2021-10-29 04:49:54,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-29 04:49:54,247 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.142857142857143) internal successors, (30), 14 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-29 04:49:54,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:49:54,248 INFO L225 Difference]: With dead ends: 18 [2021-10-29 04:49:54,248 INFO L226 Difference]: Without dead ends: 0 [2021-10-29 04:49:54,249 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2021-10-29 04:49:54,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-29 04:49:54,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-29 04:49:54,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:49:54,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-29 04:49:54,250 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2021-10-29 04:49:54,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:49:54,251 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-29 04:49:54,251 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.142857142857143) internal successors, (30), 14 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:49:54,252 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-29 04:49:54,252 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-29 04:49:54,255 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 04:49:54,288 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f941ee0f-f462-4b1a-9048-1c70c40165a4/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-10-29 04:49:54,473 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f941ee0f-f462-4b1a-9048-1c70c40165a4/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 04:49:54,475 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-29 04:49:54,478 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:49:54,506 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:49:54,528 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:49:54,529 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:49:54,531 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:49:54,534 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:49:54,546 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:49:55,129 INFO L857 garLoopResultBuilder]: For program point L143(line 143) no Hoare annotation was computed. [2021-10-29 04:49:55,129 INFO L857 garLoopResultBuilder]: For program point L143-2(lines 143 146) no Hoare annotation was computed. [2021-10-29 04:49:55,130 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-29 04:49:55,130 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-29 04:49:55,130 INFO L853 garLoopResultBuilder]: At program point L28(lines 16 29) the Hoare annotation is: false [2021-10-29 04:49:55,130 INFO L857 garLoopResultBuilder]: For program point L144(line 144) no Hoare annotation was computed. [2021-10-29 04:49:55,131 INFO L857 garLoopResultBuilder]: For program point L111(lines 111 116) no Hoare annotation was computed. [2021-10-29 04:49:55,131 INFO L853 garLoopResultBuilder]: At program point L128(lines 119 129) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 8 24)))) (and (= .cse0 ULTIMATE.start_main_~res~0) |ULTIMATE.start_main_#t~short32| (= ULTIMATE.start_atan_float_~x .cse0) (= |ULTIMATE.start___signbit_float_#res| (_ bv1 32)) (= .cse0 |ULTIMATE.start_atan_float_#res|) (= .cse0 (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))) (= ~huge_atan~0 ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1000000000000000000000000000000.0))) (= ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1.0)) ~one_atan~0) (= .cse0 ULTIMATE.start___signbit_float_~x) (= currentRoundingMode roundNearestTiesToEven))) [2021-10-29 04:49:55,131 INFO L857 garLoopResultBuilder]: For program point L122-1(lines 122 126) no Hoare annotation was computed. [2021-10-29 04:49:55,131 INFO L853 garLoopResultBuilder]: At program point L122-2(lines 122 126) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 8 24)))) (and (= .cse0 ULTIMATE.start_main_~res~0) |ULTIMATE.start_main_#t~short32| (= ULTIMATE.start_atan_float_~x .cse0) (= .cse0 |ULTIMATE.start_atan_float_#res|) (= ~huge_atan~0 ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1000000000000000000000000000000.0))) (= ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1.0)) ~one_atan~0) (= .cse0 ULTIMATE.start___signbit_float_~x) (= currentRoundingMode roundNearestTiesToEven))) [2021-10-29 04:49:55,132 INFO L857 garLoopResultBuilder]: For program point L23(lines 23 27) no Hoare annotation was computed. [2021-10-29 04:49:55,132 INFO L857 garLoopResultBuilder]: For program point L122-3(lines 122 126) no Hoare annotation was computed. [2021-10-29 04:49:55,132 INFO L857 garLoopResultBuilder]: For program point L23-1(lines 16 29) no Hoare annotation was computed. [2021-10-29 04:49:55,132 INFO L857 garLoopResultBuilder]: For program point L23-2(lines 23 27) no Hoare annotation was computed. [2021-10-29 04:49:55,132 INFO L857 garLoopResultBuilder]: For program point L81(lines 81 97) no Hoare annotation was computed. [2021-10-29 04:49:55,133 INFO L857 garLoopResultBuilder]: For program point L73(lines 73 98) no Hoare annotation was computed. [2021-10-29 04:49:55,133 INFO L857 garLoopResultBuilder]: For program point L65(lines 65 72) no Hoare annotation was computed. [2021-10-29 04:49:55,133 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-29 04:49:55,133 INFO L857 garLoopResultBuilder]: For program point L90(lines 90 96) no Hoare annotation was computed. [2021-10-29 04:49:55,133 INFO L857 garLoopResultBuilder]: For program point L90-2(lines 73 98) no Hoare annotation was computed. [2021-10-29 04:49:55,134 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 144) no Hoare annotation was computed. [2021-10-29 04:49:55,134 INFO L860 garLoopResultBuilder]: At program point L148(lines 131 149) the Hoare annotation is: true [2021-10-29 04:49:55,134 INFO L857 garLoopResultBuilder]: For program point L115(line 115) no Hoare annotation was computed. [2021-10-29 04:49:55,134 INFO L857 garLoopResultBuilder]: For program point L82(lines 82 88) no Hoare annotation was computed. [2021-10-29 04:49:55,134 INFO L857 garLoopResultBuilder]: For program point L115-2(line 115) no Hoare annotation was computed. [2021-10-29 04:49:55,135 INFO L853 garLoopResultBuilder]: At program point L115-3(lines 55 117) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 8 24)))) (and (= ULTIMATE.start_atan_float_~x .cse0) (= .cse0 |ULTIMATE.start_atan_float_#res|) (= ~huge_atan~0 ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1000000000000000000000000000000.0))) (= ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1.0)) ~one_atan~0) (= currentRoundingMode roundNearestTiesToEven))) [2021-10-29 04:49:55,135 INFO L857 garLoopResultBuilder]: For program point L74(lines 74 77) no Hoare annotation was computed. [2021-10-29 04:49:55,135 INFO L857 garLoopResultBuilder]: For program point L74-2(lines 74 77) no Hoare annotation was computed. [2021-10-29 04:49:55,135 INFO L857 garLoopResultBuilder]: For program point L66(lines 66 67) no Hoare annotation was computed. [2021-10-29 04:49:55,135 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-29 04:49:55,136 INFO L857 garLoopResultBuilder]: For program point L75(lines 75 76) no Hoare annotation was computed. [2021-10-29 04:49:55,136 INFO L857 garLoopResultBuilder]: For program point L59-1(lines 59 63) no Hoare annotation was computed. [2021-10-29 04:49:55,136 INFO L853 garLoopResultBuilder]: At program point L59-2(lines 59 63) the Hoare annotation is: (and (= ULTIMATE.start_atan_float_~x (fp.neg (_ +zero 8 24))) (= ~huge_atan~0 ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1000000000000000000000000000000.0))) (= ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1.0)) ~one_atan~0) (= currentRoundingMode roundNearestTiesToEven)) [2021-10-29 04:49:55,136 INFO L857 garLoopResultBuilder]: For program point L59-3(lines 59 63) no Hoare annotation was computed. [2021-10-29 04:49:55,136 INFO L857 garLoopResultBuilder]: For program point L18-1(lines 18 22) no Hoare annotation was computed. [2021-10-29 04:49:55,137 INFO L853 garLoopResultBuilder]: At program point L18-2(lines 18 22) the Hoare annotation is: false [2021-10-29 04:49:55,137 INFO L857 garLoopResultBuilder]: For program point L68(lines 68 71) no Hoare annotation was computed. [2021-10-29 04:49:55,141 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2021-10-29 04:49:55,144 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 04:49:55,157 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-29 04:49:55,162 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-29 04:49:55,164 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-29 04:49:55,165 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-29 04:49:55,166 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-29 04:49:55,167 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-29 04:49:55,168 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-29 04:49:55,169 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-29 04:49:55,170 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 04:49:55 BoogieIcfgContainer [2021-10-29 04:49:55,170 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 04:49:55,171 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 04:49:55,171 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 04:49:55,171 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 04:49:55,172 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:49:22" (3/4) ... [2021-10-29 04:49:55,176 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-29 04:49:55,193 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2021-10-29 04:49:55,194 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-10-29 04:49:55,194 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-29 04:49:55,195 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-29 04:49:55,228 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == \result) && huge_atan == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0E30))) && ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0)) == one_atan) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven [2021-10-29 04:49:55,230 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == res && aux-res == -0.0f && __signbit_float(res) == 1-aux) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == \result) && huge_atan == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0E30))) && ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0)) == one_atan) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven [2021-10-29 04:49:55,230 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == res && aux-res == -0.0f && __signbit_float(res) == 1-aux) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && \result == 1bv32) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == \result) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && huge_atan == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0E30))) && ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0)) == one_atan) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven [2021-10-29 04:49:55,289 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f941ee0f-f462-4b1a-9048-1c70c40165a4/bin/utaipan-SDwSMHVbGG/witness.graphml [2021-10-29 04:49:55,289 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 04:49:55,291 INFO L168 Benchmark]: Toolchain (without parser) took 45333.19 ms. Allocated memory was 52.4 MB in the beginning and 73.4 MB in the end (delta: 21.0 MB). Free memory was 29.5 MB in the beginning and 29.5 MB in the end (delta: 13.4 kB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2021-10-29 04:49:55,292 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 52.4 MB. Free memory was 33.5 MB in the beginning and 33.5 MB in the end (delta: 33.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 04:49:55,293 INFO L168 Benchmark]: CACSL2BoogieTranslator took 413.61 ms. Allocated memory was 52.4 MB in the beginning and 73.4 MB in the end (delta: 21.0 MB). Free memory was 29.3 MB in the beginning and 53.7 MB in the end (delta: -24.4 MB). Peak memory consumption was 5.3 MB. Max. memory is 16.1 GB. [2021-10-29 04:49:55,294 INFO L168 Benchmark]: Boogie Procedure Inliner took 68.61 ms. Allocated memory is still 73.4 MB. Free memory was 53.7 MB in the beginning and 51.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-29 04:49:55,294 INFO L168 Benchmark]: Boogie Preprocessor took 57.59 ms. Allocated memory is still 73.4 MB. Free memory was 51.2 MB in the beginning and 49.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 04:49:55,295 INFO L168 Benchmark]: RCFGBuilder took 12037.68 ms. Allocated memory is still 73.4 MB. Free memory was 48.9 MB in the beginning and 47.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 17.5 MB. Max. memory is 16.1 GB. [2021-10-29 04:49:55,295 INFO L168 Benchmark]: TraceAbstraction took 32627.65 ms. Allocated memory is still 73.4 MB. Free memory was 47.2 MB in the beginning and 34.9 MB in the end (delta: 12.4 MB). Peak memory consumption was 12.3 MB. Max. memory is 16.1 GB. [2021-10-29 04:49:55,296 INFO L168 Benchmark]: Witness Printer took 118.88 ms. Allocated memory is still 73.4 MB. Free memory was 34.9 MB in the beginning and 29.5 MB in the end (delta: 5.4 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-29 04:49:55,299 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 52.4 MB. Free memory was 33.5 MB in the beginning and 33.5 MB in the end (delta: 33.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 413.61 ms. Allocated memory was 52.4 MB in the beginning and 73.4 MB in the end (delta: 21.0 MB). Free memory was 29.3 MB in the beginning and 53.7 MB in the end (delta: -24.4 MB). Peak memory consumption was 5.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 68.61 ms. Allocated memory is still 73.4 MB. Free memory was 53.7 MB in the beginning and 51.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 57.59 ms. Allocated memory is still 73.4 MB. Free memory was 51.2 MB in the beginning and 49.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 12037.68 ms. Allocated memory is still 73.4 MB. Free memory was 48.9 MB in the beginning and 47.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 17.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 32627.65 ms. Allocated memory is still 73.4 MB. Free memory was 47.2 MB in the beginning and 34.9 MB in the end (delta: 12.4 MB). Peak memory consumption was 12.3 MB. Max. memory is 16.1 GB. * Witness Printer took 118.88 ms. Allocated memory is still 73.4 MB. Free memory was 34.9 MB in the beginning and 29.5 MB in the end (delta: 5.4 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: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 144]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 37 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 32.5s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 15.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.6s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 111 SDtfs, 162 SDslu, 201 SDs, 0 SdLazy, 83 SolverSat, 13 SolverUnsat, 5 SolverUnknown, 0 SolverNotchecked, 13.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 133 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 4.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=0, InterpolantAutomatonStates: 25, 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, 134 HoareAnnotationTreeSize, 7 FomulaSimplifications, 24 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 6.2s SatisfiabilityAnalysisTime, 8.6s InterpolantComputationTime, 67 NumberOfCodeBlocks, 67 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 124 ConstructedInterpolants, 12 QuantifiedInterpolants, 676 SizeOfPredicates, 28 NumberOfNonLiveVariables, 513 ConjunctsInSsa, 37 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 119]: Loop Invariant [2021-10-29 04:49:55,316 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-29 04:49:55,317 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: ((((((((~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == res && aux-res == -0.0f && __signbit_float(res) == 1-aux) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && \result == 1bv32) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == \result) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && huge_atan == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0E30))) && ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0)) == one_atan) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven - InvariantResult [Line: 131]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 59]: Loop Invariant [2021-10-29 04:49:55,332 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-29 04:49:55,333 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: ((x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) && huge_atan == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0E30))) && ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0)) == one_atan) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven - InvariantResult [Line: 122]: Loop Invariant [2021-10-29 04:49:55,334 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-29 04:49:55,335 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: ((((((~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == res && aux-res == -0.0f && __signbit_float(res) == 1-aux) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == \result) && huge_atan == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0E30))) && ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0)) == one_atan) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven - InvariantResult [Line: 55]: Loop Invariant [2021-10-29 04:49:55,338 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-29 04:49:55,338 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: (((x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == \result) && huge_atan == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0E30))) && ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0)) == one_atan) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven RESULT: Ultimate proved your program to be correct! [2021-10-29 04:49:55,527 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f941ee0f-f462-4b1a-9048-1c70c40165a4/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...