./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cbmc-regression/float-zero-sum1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d9762-785d-4a40-8d20-bb3df3b88cce/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d9762-785d-4a40-8d20-bb3df3b88cce/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d9762-785d-4a40-8d20-bb3df3b88cce/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d9762-785d-4a40-8d20-bb3df3b88cce/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float-zero-sum1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d9762-785d-4a40-8d20-bb3df3b88cce/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d9762-785d-4a40-8d20-bb3df3b88cce/bin/utaipan-mTDlp9Zugs --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash debea56186ef4ab268c0be4274b8e0822edc1b01 ................................................................................................................................................................................................................................................... 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_892d9762-785d-4a40-8d20-bb3df3b88cce/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d9762-785d-4a40-8d20-bb3df3b88cce/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d9762-785d-4a40-8d20-bb3df3b88cce/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d9762-785d-4a40-8d20-bb3df3b88cce/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float-zero-sum1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d9762-785d-4a40-8d20-bb3df3b88cce/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d9762-785d-4a40-8d20-bb3df3b88cce/bin/utaipan-mTDlp9Zugs --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash debea56186ef4ab268c0be4274b8e0822edc1b01 ................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-16 02:56:46,168 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:56:46,170 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:56:46,202 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:56:46,203 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:56:46,204 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:56:46,206 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:56:46,209 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:56:46,211 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:56:46,212 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:56:46,213 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:56:46,215 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:56:46,215 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:56:46,216 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:56:46,218 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:56:46,220 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:56:46,221 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:56:46,222 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:56:46,225 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:56:46,228 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:56:46,230 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:56:46,232 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:56:46,234 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:56:46,235 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:56:46,239 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:56:46,247 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:56:46,247 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:56:46,248 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:56:46,249 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:56:46,250 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:56:46,250 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:56:46,253 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:56:46,254 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:56:46,255 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:56:46,256 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:56:46,256 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:56:46,257 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:56:46,257 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:56:46,258 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:56:46,259 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:56:46,260 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:56:46,263 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d9762-785d-4a40-8d20-bb3df3b88cce/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-16 02:56:46,311 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:56:46,311 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:56:46,313 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:56:46,313 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:56:46,313 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:56:46,314 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:56:46,314 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-16 02:56:46,314 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:56:46,314 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:56:46,314 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-16 02:56:46,321 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-16 02:56:46,321 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:56:46,322 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-16 02:56:46,322 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-16 02:56:46,322 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-16 02:56:46,323 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:56:46,323 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:56:46,323 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 02:56:46,323 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:56:46,324 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:56:46,324 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 02:56:46,324 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:56:46,324 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 02:56:46,324 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:56:46,325 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:56:46,325 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 02:56:46,325 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:56:46,325 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 02:56:46,325 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:56:46,327 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:56:46,328 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:56:46,328 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:56:46,328 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:56:46,328 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 02:56:46,329 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-16 02:56:46,329 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-16 02:56:46,329 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 02:56:46,329 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:56:46,329 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:56:46,329 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d9762-785d-4a40-8d20-bb3df3b88cce/bin/utaipan-mTDlp9Zugs/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d9762-785d-4a40-8d20-bb3df3b88cce/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> debea56186ef4ab268c0be4274b8e0822edc1b01 [2021-10-16 02:56:46,672 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:56:46,707 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:56:46,709 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:56:46,711 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:56:46,711 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:56:46,712 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d9762-785d-4a40-8d20-bb3df3b88cce/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/floats-cbmc-regression/float-zero-sum1.i [2021-10-16 02:56:46,782 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d9762-785d-4a40-8d20-bb3df3b88cce/bin/utaipan-mTDlp9Zugs/data/d98257b78/7aaf6da2e8394b5a97ec487fa4aaab73/FLAG9ee3ec1a9 [2021-10-16 02:56:47,263 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:56:47,264 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d9762-785d-4a40-8d20-bb3df3b88cce/sv-benchmarks/c/floats-cbmc-regression/float-zero-sum1.i [2021-10-16 02:56:47,284 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d9762-785d-4a40-8d20-bb3df3b88cce/bin/utaipan-mTDlp9Zugs/data/d98257b78/7aaf6da2e8394b5a97ec487fa4aaab73/FLAG9ee3ec1a9 [2021-10-16 02:56:47,615 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d9762-785d-4a40-8d20-bb3df3b88cce/bin/utaipan-mTDlp9Zugs/data/d98257b78/7aaf6da2e8394b5a97ec487fa4aaab73 [2021-10-16 02:56:47,618 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:56:47,622 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:56:47,626 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:56:47,626 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:56:47,631 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:56:47,632 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:56:47" (1/1) ... [2021-10-16 02:56:47,634 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bebc116 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:56:47, skipping insertion in model container [2021-10-16 02:56:47,634 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:56:47" (1/1) ... [2021-10-16 02:56:47,643 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:56:47,674 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:56:47,859 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_892d9762-785d-4a40-8d20-bb3df3b88cce/sv-benchmarks/c/floats-cbmc-regression/float-zero-sum1.i[2011,2024] [2021-10-16 02:56:47,867 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:56:47,875 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 02:56:47,942 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_892d9762-785d-4a40-8d20-bb3df3b88cce/sv-benchmarks/c/floats-cbmc-regression/float-zero-sum1.i[2011,2024] [2021-10-16 02:56:47,946 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:56:47,961 INFO L208 MainTranslator]: Completed translation [2021-10-16 02:56:47,962 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:56:47 WrapperNode [2021-10-16 02:56:47,962 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:56:47,963 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 02:56:47,963 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 02:56:47,964 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 02:56:47,971 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:56:47" (1/1) ... [2021-10-16 02:56:47,979 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:56:47" (1/1) ... [2021-10-16 02:56:47,996 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:56:47,997 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:56:47,997 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:56:47,997 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:56:48,005 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:56:47" (1/1) ... [2021-10-16 02:56:48,005 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:56:47" (1/1) ... [2021-10-16 02:56:48,007 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:56:47" (1/1) ... [2021-10-16 02:56:48,007 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:56:47" (1/1) ... [2021-10-16 02:56:48,013 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:56:47" (1/1) ... [2021-10-16 02:56:48,014 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:56:47" (1/1) ... [2021-10-16 02:56:48,015 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:56:47" (1/1) ... [2021-10-16 02:56:48,017 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:56:48,018 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:56:48,018 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:56:48,018 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:56:48,019 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:56:47" (1/1) ... [2021-10-16 02:56:48,027 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:56:48,042 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d9762-785d-4a40-8d20-bb3df3b88cce/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:56:48,065 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d9762-785d-4a40-8d20-bb3df3b88cce/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:56:48,095 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d9762-785d-4a40-8d20-bb3df3b88cce/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:56:48,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-16 02:56:48,124 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 02:56:48,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-10-16 02:56:48,126 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:56:48,126 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:56:48,126 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-16 02:56:48,127 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-16 02:56:48,351 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:56:48,351 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-10-16 02:56:48,354 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:56:48 BoogieIcfgContainer [2021-10-16 02:56:48,354 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:56:48,356 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:56:48,356 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:56:48,360 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:56:48,360 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:56:47" (1/3) ... [2021-10-16 02:56:48,361 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d9e79da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:56:48, skipping insertion in model container [2021-10-16 02:56:48,361 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:56:47" (2/3) ... [2021-10-16 02:56:48,361 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d9e79da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:56:48, skipping insertion in model container [2021-10-16 02:56:48,362 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:56:48" (3/3) ... [2021-10-16 02:56:48,363 INFO L111 eAbstractionObserver]: Analyzing ICFG float-zero-sum1.i [2021-10-16 02:56:48,368 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:56:48,369 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-16 02:56:48,434 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:56:48,441 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-16 02:56:48,442 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-16 02:56:48,472 INFO L276 IsEmpty]: Start isEmpty. Operand has 6 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:56:48,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-16 02:56:48,477 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:56:48,477 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-16 02:56:48,478 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:56:48,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:56:48,484 INFO L82 PathProgramCache]: Analyzing trace with hash 48211, now seen corresponding path program 1 times [2021-10-16 02:56:48,493 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:56:48,494 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665229538] [2021-10-16 02:56:48,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:56:48,495 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:56:48,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-16 02:56:48,615 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-16 02:56:48,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-16 02:56:48,692 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-16 02:56:48,694 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-16 02:56:48,700 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:56:48,702 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-16 02:56:48,708 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 02:56:48,738 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 02:56:48 BoogieIcfgContainer [2021-10-16 02:56:48,738 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 02:56:48,745 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 02:56:48,745 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 02:56:48,745 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 02:56:48,746 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:56:48" (3/4) ... [2021-10-16 02:56:48,750 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-16 02:56:48,751 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 02:56:48,756 INFO L168 Benchmark]: Toolchain (without parser) took 1129.96 ms. Allocated memory was 86.0 MB in the beginning and 107.0 MB in the end (delta: 21.0 MB). Free memory was 47.8 MB in the beginning and 58.0 MB in the end (delta: -10.2 MB). Peak memory consumption was 10.9 MB. Max. memory is 16.1 GB. [2021-10-16 02:56:48,758 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 86.0 MB. Free memory was 63.9 MB in the beginning and 63.8 MB in the end (delta: 52.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:56:48,760 INFO L168 Benchmark]: CACSL2BoogieTranslator took 336.62 ms. Allocated memory was 86.0 MB in the beginning and 107.0 MB in the end (delta: 21.0 MB). Free memory was 47.6 MB in the beginning and 85.1 MB in the end (delta: -37.4 MB). Peak memory consumption was 10.9 MB. Max. memory is 16.1 GB. [2021-10-16 02:56:48,761 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.95 ms. Allocated memory is still 107.0 MB. Free memory was 85.1 MB in the beginning and 83.6 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:56:48,762 INFO L168 Benchmark]: Boogie Preprocessor took 20.61 ms. Allocated memory is still 107.0 MB. Free memory was 83.6 MB in the beginning and 82.8 MB in the end (delta: 785.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:56:48,763 INFO L168 Benchmark]: RCFGBuilder took 336.15 ms. Allocated memory is still 107.0 MB. Free memory was 82.6 MB in the beginning and 71.8 MB in the end (delta: 10.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-16 02:56:48,770 INFO L168 Benchmark]: TraceAbstraction took 382.66 ms. Allocated memory is still 107.0 MB. Free memory was 71.4 MB in the beginning and 58.4 MB in the end (delta: 13.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-16 02:56:48,771 INFO L168 Benchmark]: Witness Printer took 6.05 ms. Allocated memory is still 107.0 MB. Free memory was 58.4 MB in the beginning and 58.0 MB in the end (delta: 384.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:56:48,780 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 86.0 MB. Free memory was 63.9 MB in the beginning and 63.8 MB in the end (delta: 52.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 336.62 ms. Allocated memory was 86.0 MB in the beginning and 107.0 MB in the end (delta: 21.0 MB). Free memory was 47.6 MB in the beginning and 85.1 MB in the end (delta: -37.4 MB). Peak memory consumption was 10.9 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 32.95 ms. Allocated memory is still 107.0 MB. Free memory was 85.1 MB in the beginning and 83.6 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 20.61 ms. Allocated memory is still 107.0 MB. Free memory was 83.6 MB in the beginning and 82.8 MB in the end (delta: 785.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 336.15 ms. Allocated memory is still 107.0 MB. Free memory was 82.6 MB in the beginning and 71.8 MB in the end (delta: 10.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 382.66 ms. Allocated memory is still 107.0 MB. Free memory was 71.4 MB in the beginning and 58.4 MB in the end (delta: 13.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Witness Printer took 6.05 ms. Allocated memory is still 107.0 MB. Free memory was 58.4 MB in the beginning and 58.0 MB in the end (delta: 384.1 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, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 114]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryArithmeticFLOAToperation at line 111, overapproximation of someUnaryDOUBLEoperation at line 122. Possible FailurePath: [L111] float sum = a + b; [L112] union mix m; [L113] m.f = sum [L114] EXPR m.i [L114] COND TRUE !(m.i != 0x80000000) [L114] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 274.7ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 25.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 9.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=6occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 6.4ms SsaConstructionTime, 54.1ms SatisfiabilityAnalysisTime, 0.0ms InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-16 02:56:48,837 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d9762-785d-4a40-8d20-bb3df3b88cce/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-5709675 [2021-10-16 02:56:51,560 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:56:51,563 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:56:51,599 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:56:51,600 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:56:51,601 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:56:51,604 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:56:51,607 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:56:51,609 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:56:51,611 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:56:51,612 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:56:51,614 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:56:51,615 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:56:51,617 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:56:51,618 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:56:51,620 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:56:51,622 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:56:51,623 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:56:51,626 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:56:51,630 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:56:51,632 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:56:51,634 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:56:51,636 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:56:51,637 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:56:51,642 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:56:51,643 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:56:51,643 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:56:51,644 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:56:51,645 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:56:51,647 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:56:51,647 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:56:51,648 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:56:51,650 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:56:51,651 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:56:51,652 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:56:51,653 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:56:51,654 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:56:51,654 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:56:51,655 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:56:51,656 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:56:51,657 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:56:51,659 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d9762-785d-4a40-8d20-bb3df3b88cce/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-16 02:56:51,690 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:56:51,691 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:56:51,692 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:56:51,693 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:56:51,693 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:56:51,694 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:56:51,694 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:56:51,694 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:56:51,694 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:56:51,695 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:56:51,696 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:56:51,696 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:56:51,696 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:56:51,697 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 02:56:51,697 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:56:51,697 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 02:56:51,697 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:56:51,698 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-16 02:56:51,698 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-16 02:56:51,698 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:56:51,698 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 02:56:51,699 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:56:51,699 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 02:56:51,699 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:56:51,699 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-16 02:56:51,700 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:56:51,700 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:56:51,700 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:56:51,700 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:56:51,701 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 02:56:51,701 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-16 02:56:51,701 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-16 02:56:51,701 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 02:56:51,702 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:56:51,702 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:56:51,702 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_892d9762-785d-4a40-8d20-bb3df3b88cce/bin/utaipan-mTDlp9Zugs/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d9762-785d-4a40-8d20-bb3df3b88cce/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> debea56186ef4ab268c0be4274b8e0822edc1b01 [2021-10-16 02:56:52,153 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:56:52,190 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:56:52,193 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:56:52,194 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:56:52,195 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:56:52,199 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d9762-785d-4a40-8d20-bb3df3b88cce/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/floats-cbmc-regression/float-zero-sum1.i [2021-10-16 02:56:52,285 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d9762-785d-4a40-8d20-bb3df3b88cce/bin/utaipan-mTDlp9Zugs/data/7aa8d3734/da55215e90eb4ffca251d3e3f3ba0f41/FLAGc42926a35 [2021-10-16 02:56:52,806 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:56:52,807 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d9762-785d-4a40-8d20-bb3df3b88cce/sv-benchmarks/c/floats-cbmc-regression/float-zero-sum1.i [2021-10-16 02:56:52,817 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d9762-785d-4a40-8d20-bb3df3b88cce/bin/utaipan-mTDlp9Zugs/data/7aa8d3734/da55215e90eb4ffca251d3e3f3ba0f41/FLAGc42926a35 [2021-10-16 02:56:53,180 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d9762-785d-4a40-8d20-bb3df3b88cce/bin/utaipan-mTDlp9Zugs/data/7aa8d3734/da55215e90eb4ffca251d3e3f3ba0f41 [2021-10-16 02:56:53,184 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:56:53,186 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:56:53,188 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:56:53,188 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:56:53,199 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:56:53,200 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:56:53" (1/1) ... [2021-10-16 02:56:53,201 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bc4956d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:56:53, skipping insertion in model container [2021-10-16 02:56:53,201 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:56:53" (1/1) ... [2021-10-16 02:56:53,222 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:56:53,249 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:56:53,432 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_892d9762-785d-4a40-8d20-bb3df3b88cce/sv-benchmarks/c/floats-cbmc-regression/float-zero-sum1.i[2011,2024] [2021-10-16 02:56:53,442 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:56:53,459 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 02:56:53,482 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_892d9762-785d-4a40-8d20-bb3df3b88cce/sv-benchmarks/c/floats-cbmc-regression/float-zero-sum1.i[2011,2024] [2021-10-16 02:56:53,490 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:56:53,558 INFO L208 MainTranslator]: Completed translation [2021-10-16 02:56:53,559 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:56:53 WrapperNode [2021-10-16 02:56:53,559 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:56:53,560 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 02:56:53,561 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 02:56:53,561 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 02:56:53,573 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:56:53" (1/1) ... [2021-10-16 02:56:53,586 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:56:53" (1/1) ... [2021-10-16 02:56:53,609 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:56:53,609 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:56:53,610 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:56:53,610 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:56:53,617 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:56:53" (1/1) ... [2021-10-16 02:56:53,617 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:56:53" (1/1) ... [2021-10-16 02:56:53,622 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:56:53" (1/1) ... [2021-10-16 02:56:53,623 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:56:53" (1/1) ... [2021-10-16 02:56:53,633 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:56:53" (1/1) ... [2021-10-16 02:56:53,635 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:56:53" (1/1) ... [2021-10-16 02:56:53,637 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:56:53" (1/1) ... [2021-10-16 02:56:53,641 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:56:53,643 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:56:53,643 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:56:53,643 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:56:53,644 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:56:53" (1/1) ... [2021-10-16 02:56:53,653 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:56:53,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d9762-785d-4a40-8d20-bb3df3b88cce/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:56:53,689 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d9762-785d-4a40-8d20-bb3df3b88cce/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:56:53,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d9762-785d-4a40-8d20-bb3df3b88cce/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:56:53,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-16 02:56:53,738 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 02:56:53,738 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-16 02:56:53,739 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:56:53,739 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:56:53,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2021-10-16 02:56:53,739 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-16 02:56:54,158 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:56:54,158 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-10-16 02:56:54,160 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:56:54 BoogieIcfgContainer [2021-10-16 02:56:54,171 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:56:54,173 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:56:54,173 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:56:54,177 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:56:54,178 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:56:53" (1/3) ... [2021-10-16 02:56:54,179 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58a6da8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:56:54, skipping insertion in model container [2021-10-16 02:56:54,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:56:53" (2/3) ... [2021-10-16 02:56:54,187 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58a6da8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:56:54, skipping insertion in model container [2021-10-16 02:56:54,187 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:56:54" (3/3) ... [2021-10-16 02:56:54,189 INFO L111 eAbstractionObserver]: Analyzing ICFG float-zero-sum1.i [2021-10-16 02:56:54,196 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:56:54,196 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-16 02:56:54,276 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:56:54,285 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-16 02:56:54,285 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-16 02:56:54,301 INFO L276 IsEmpty]: Start isEmpty. Operand has 10 states, 8 states have (on average 1.25) internal successors, (10), 9 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:56:54,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-16 02:56:54,307 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:56:54,308 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-16 02:56:54,309 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:56:54,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:56:54,316 INFO L82 PathProgramCache]: Analyzing trace with hash 925604, now seen corresponding path program 1 times [2021-10-16 02:56:54,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:56:54,332 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1418177944] [2021-10-16 02:56:54,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:56:54,334 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:56:54,335 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d9762-785d-4a40-8d20-bb3df3b88cce/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:56:54,338 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d9762-785d-4a40-8d20-bb3df3b88cce/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:56:54,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d9762-785d-4a40-8d20-bb3df3b88cce/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-16 02:56:54,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:56:54,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-16 02:56:54,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:56:54,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:56:54,685 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:56:54,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:56:54,805 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:56:54,805 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1418177944] [2021-10-16 02:56:54,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1418177944] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:56:54,806 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:56:54,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-16 02:56:54,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188605099] [2021-10-16 02:56:54,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 02:56:54,818 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:56:54,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 02:56:54,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-16 02:56:54,846 INFO L87 Difference]: Start difference. First operand has 10 states, 8 states have (on average 1.25) internal successors, (10), 9 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) Second operand has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:56:54,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:56:54,937 INFO L93 Difference]: Finished difference Result 15 states and 14 transitions. [2021-10-16 02:56:54,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:56:54,940 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-10-16 02:56:54,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:56:54,950 INFO L225 Difference]: With dead ends: 15 [2021-10-16 02:56:54,950 INFO L226 Difference]: Without dead ends: 0 [2021-10-16 02:56:54,953 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 128.3ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-16 02:56:54,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-16 02:56:54,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-16 02:56:54,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:56:54,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-16 02:56:54,983 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 4 [2021-10-16 02:56:54,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:56:54,984 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-16 02:56:54,985 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:56:54,985 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-16 02:56:54,985 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-16 02:56:54,988 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:56:55,009 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d9762-785d-4a40-8d20-bb3df3b88cce/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-16 02:56:55,208 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d9762-785d-4a40-8d20-bb3df3b88cce/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:56:55,210 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-16 02:56:55,213 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:56:55,250 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:56:55,269 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-16 02:56:55,270 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-16 02:56:55,270 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-16 02:56:55,270 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-16 02:56:55,272 INFO L853 garLoopResultBuilder]: At program point L123(lines 119 124) the Hoare annotation is: (= currentRoundingMode roundNearestTiesToEven) [2021-10-16 02:56:55,272 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 114) no Hoare annotation was computed. [2021-10-16 02:56:55,273 INFO L853 garLoopResultBuilder]: At program point L116(lines 110 117) the Hoare annotation is: (= currentRoundingMode roundNearestTiesToEven) [2021-10-16 02:56:55,274 INFO L857 garLoopResultBuilder]: For program point L114(line 114) no Hoare annotation was computed. [2021-10-16 02:56:55,275 INFO L857 garLoopResultBuilder]: For program point L114-1(line 114) no Hoare annotation was computed. [2021-10-16 02:56:55,275 INFO L857 garLoopResultBuilder]: For program point L114-3(line 114) no Hoare annotation was computed. [2021-10-16 02:56:55,283 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 02:56:55,302 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-16 02:56:55,306 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-16 02:56:55,307 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-16 02:56:55,309 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-16 02:56:55,309 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 02:56:55 BoogieIcfgContainer [2021-10-16 02:56:55,310 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 02:56:55,318 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 02:56:55,319 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 02:56:55,319 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 02:56:55,320 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:56:54" (3/4) ... [2021-10-16 02:56:55,328 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-16 02:56:55,346 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2021-10-16 02:56:55,347 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-10-16 02:56:55,348 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-16 02:56:55,348 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-16 02:56:55,410 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d9762-785d-4a40-8d20-bb3df3b88cce/bin/utaipan-mTDlp9Zugs/witness.graphml [2021-10-16 02:56:55,416 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 02:56:55,418 INFO L168 Benchmark]: Toolchain (without parser) took 2231.46 ms. Allocated memory is still 73.4 MB. Free memory was 51.2 MB in the beginning and 37.4 MB in the end (delta: 13.8 MB). Peak memory consumption was 13.3 MB. Max. memory is 16.1 GB. [2021-10-16 02:56:55,420 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 54.5 MB. Free memory is still 34.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:56:55,421 INFO L168 Benchmark]: CACSL2BoogieTranslator took 371.64 ms. Allocated memory is still 73.4 MB. Free memory was 51.1 MB in the beginning and 56.9 MB in the end (delta: -5.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-16 02:56:55,422 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.40 ms. Allocated memory is still 73.4 MB. Free memory was 56.7 MB in the beginning and 55.3 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:56:55,423 INFO L168 Benchmark]: Boogie Preprocessor took 32.16 ms. Allocated memory is still 73.4 MB. Free memory was 55.3 MB in the beginning and 54.2 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:56:55,424 INFO L168 Benchmark]: RCFGBuilder took 528.57 ms. Allocated memory is still 73.4 MB. Free memory was 54.2 MB in the beginning and 45.0 MB in the end (delta: 9.1 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-16 02:56:55,425 INFO L168 Benchmark]: TraceAbstraction took 1137.98 ms. Allocated memory is still 73.4 MB. Free memory was 44.6 MB in the beginning and 39.6 MB in the end (delta: 5.0 MB). Peak memory consumption was 5.9 MB. Max. memory is 16.1 GB. [2021-10-16 02:56:55,427 INFO L168 Benchmark]: Witness Printer took 98.12 ms. Allocated memory is still 73.4 MB. Free memory was 39.6 MB in the beginning and 37.4 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:56:55,433 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 54.5 MB. Free memory is still 34.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 371.64 ms. Allocated memory is still 73.4 MB. Free memory was 51.1 MB in the beginning and 56.9 MB in the end (delta: -5.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 48.40 ms. Allocated memory is still 73.4 MB. Free memory was 56.7 MB in the beginning and 55.3 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 32.16 ms. Allocated memory is still 73.4 MB. Free memory was 55.3 MB in the beginning and 54.2 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 528.57 ms. Allocated memory is still 73.4 MB. Free memory was 54.2 MB in the beginning and 45.0 MB in the end (delta: 9.1 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1137.98 ms. Allocated memory is still 73.4 MB. Free memory was 44.6 MB in the beginning and 39.6 MB in the end (delta: 5.0 MB). Peak memory consumption was 5.9 MB. Max. memory is 16.1 GB. * Witness Printer took 98.12 ms. Allocated memory is still 73.4 MB. Free memory was 39.6 MB in the beginning and 37.4 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 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 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 114]: 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, 10 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1006.0ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 10.8ms, AutomataDifference: 136.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 60.2ms, InitialAbstractionConstructionTime: 10.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 5 SDtfs, 5 SDslu, 5 SDs, 0 SdLazy, 3 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 33.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 128.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=10occurred in iteration=0, InterpolantAutomatonStates: 4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 11.5ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 4 NumberOfFragments, 6 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 42.7ms HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 10.8ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 13.8ms SsaConstructionTime, 85.6ms SatisfiabilityAnalysisTime, 296.5ms InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 49 SizeOfPredicates, 9 NumberOfNonLiveVariables, 34 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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: 110]: Loop Invariant [2021-10-16 02:56:55,451 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-16 02:56:55,454 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven - InvariantResult [Line: 119]: Loop Invariant [2021-10-16 02:56:55,455 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-16 02:56:55,457 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven RESULT: Ultimate proved your program to be correct! [2021-10-16 02:56:55,510 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_892d9762-785d-4a40-8d20-bb3df3b88cce/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...