./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cbmc-regression/float-no-simp1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf126caf-cb79-45d2-89ec-2f2a5acd20b4/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf126caf-cb79-45d2-89ec-2f2a5acd20b4/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf126caf-cb79-45d2-89ec-2f2a5acd20b4/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf126caf-cb79-45d2-89ec-2f2a5acd20b4/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float-no-simp1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf126caf-cb79-45d2-89ec-2f2a5acd20b4/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf126caf-cb79-45d2-89ec-2f2a5acd20b4/bin/utaipan-WLngWcDbfI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3cf66c963cee9d423d7bbfded96bc288d1ae256e ................................................................................................................................................................................................................................................. 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_cf126caf-cb79-45d2-89ec-2f2a5acd20b4/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf126caf-cb79-45d2-89ec-2f2a5acd20b4/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf126caf-cb79-45d2-89ec-2f2a5acd20b4/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf126caf-cb79-45d2-89ec-2f2a5acd20b4/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float-no-simp1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf126caf-cb79-45d2-89ec-2f2a5acd20b4/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf126caf-cb79-45d2-89ec-2f2a5acd20b4/bin/utaipan-WLngWcDbfI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3cf66c963cee9d423d7bbfded96bc288d1ae256e ................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:22:28,072 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:22:28,075 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:22:28,122 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:22:28,123 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:22:28,128 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:22:28,131 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:22:28,135 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:22:28,137 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:22:28,143 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:22:28,145 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:22:28,146 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:22:28,147 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:22:28,150 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:22:28,152 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:22:28,153 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:22:28,155 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:22:28,159 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:22:28,161 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:22:28,169 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:22:28,172 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:22:28,173 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:22:28,176 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:22:28,178 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:22:28,186 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:22:28,187 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:22:28,187 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:22:28,190 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:22:28,190 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:22:28,192 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:22:28,193 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:22:28,194 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:22:28,196 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:22:28,197 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:22:28,199 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:22:28,199 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:22:28,200 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:22:28,200 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:22:28,201 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:22:28,202 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:22:28,203 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:22:28,205 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf126caf-cb79-45d2-89ec-2f2a5acd20b4/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:22:28,245 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:22:28,245 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:22:28,247 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:22:28,247 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:22:28,247 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:22:28,248 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:22:28,248 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:22:28,248 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:22:28,254 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:22:28,255 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:22:28,256 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:22:28,256 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:22:28,257 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:22:28,257 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:22:28,257 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:22:28,258 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:22:28,258 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:22:28,259 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:22:28,259 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:22:28,259 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:22:28,260 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:22:28,260 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:22:28,260 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:22:28,261 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:22:28,261 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:22:28,261 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:22:28,261 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:22:28,262 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:22:28,262 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:22:28,264 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:22:28,264 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:22:28,264 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:22:28,265 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:22:28,265 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:22:28,265 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:22:28,266 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:22:28,266 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:22:28,266 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:22:28,266 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:22:28,267 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_cf126caf-cb79-45d2-89ec-2f2a5acd20b4/bin/utaipan-WLngWcDbfI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf126caf-cb79-45d2-89ec-2f2a5acd20b4/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3cf66c963cee9d423d7bbfded96bc288d1ae256e [2021-10-11 02:22:28,542 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:22:28,583 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:22:28,586 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:22:28,587 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:22:28,588 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:22:28,589 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf126caf-cb79-45d2-89ec-2f2a5acd20b4/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/floats-cbmc-regression/float-no-simp1.c [2021-10-11 02:22:28,682 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf126caf-cb79-45d2-89ec-2f2a5acd20b4/bin/utaipan-WLngWcDbfI/data/bc84c6980/962c172fb72646c885903a417b2bc4bb/FLAGbea12b954 [2021-10-11 02:22:29,187 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:22:29,187 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf126caf-cb79-45d2-89ec-2f2a5acd20b4/sv-benchmarks/c/floats-cbmc-regression/float-no-simp1.c [2021-10-11 02:22:29,194 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf126caf-cb79-45d2-89ec-2f2a5acd20b4/bin/utaipan-WLngWcDbfI/data/bc84c6980/962c172fb72646c885903a417b2bc4bb/FLAGbea12b954 [2021-10-11 02:22:29,587 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf126caf-cb79-45d2-89ec-2f2a5acd20b4/bin/utaipan-WLngWcDbfI/data/bc84c6980/962c172fb72646c885903a417b2bc4bb [2021-10-11 02:22:29,589 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:22:29,591 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:22:29,600 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:22:29,600 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:22:29,606 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:22:29,607 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:22:29" (1/1) ... [2021-10-11 02:22:29,609 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bbb2412 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:29, skipping insertion in model container [2021-10-11 02:22:29,609 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:22:29" (1/1) ... [2021-10-11 02:22:29,618 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:22:29,631 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:22:29,786 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf126caf-cb79-45d2-89ec-2f2a5acd20b4/sv-benchmarks/c/floats-cbmc-regression/float-no-simp1.c[352,365] [2021-10-11 02:22:29,807 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:22:29,827 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:22:29,843 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf126caf-cb79-45d2-89ec-2f2a5acd20b4/sv-benchmarks/c/floats-cbmc-regression/float-no-simp1.c[352,365] [2021-10-11 02:22:29,844 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:22:29,858 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:22:29,859 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:29 WrapperNode [2021-10-11 02:22:29,859 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:22:29,861 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:22:29,861 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:22:29,861 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:22:29,869 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:29" (1/1) ... [2021-10-11 02:22:29,879 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:29" (1/1) ... [2021-10-11 02:22:29,897 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:22:29,899 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:22:29,900 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:22:29,900 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:22:29,917 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:29" (1/1) ... [2021-10-11 02:22:29,918 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:29" (1/1) ... [2021-10-11 02:22:29,920 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:29" (1/1) ... [2021-10-11 02:22:29,920 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:29" (1/1) ... [2021-10-11 02:22:29,928 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:29" (1/1) ... [2021-10-11 02:22:29,931 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:29" (1/1) ... [2021-10-11 02:22:29,932 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:29" (1/1) ... [2021-10-11 02:22:29,940 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:22:29,942 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:22:29,944 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:22:29,945 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:22:29,946 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:29" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf126caf-cb79-45d2-89ec-2f2a5acd20b4/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:22:30,037 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:22:30,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:22:30,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:22:30,038 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:22:30,223 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:22:30,223 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-11 02:22:30,225 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:22:30 BoogieIcfgContainer [2021-10-11 02:22:30,225 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:22:30,227 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:22:30,228 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:22:30,231 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:22:30,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:22:29" (1/3) ... [2021-10-11 02:22:30,232 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20b53da4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:22:30, skipping insertion in model container [2021-10-11 02:22:30,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:29" (2/3) ... [2021-10-11 02:22:30,233 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20b53da4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:22:30, skipping insertion in model container [2021-10-11 02:22:30,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:22:30" (3/3) ... [2021-10-11 02:22:30,235 INFO L111 eAbstractionObserver]: Analyzing ICFG float-no-simp1.c [2021-10-11 02:22:30,250 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:22:30,253 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:22:30,264 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 02:22:30,289 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:22:30,290 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:22:30,290 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:22:30,290 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:22:30,290 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:22:30,290 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:22:30,290 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:22:30,291 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:22:30,303 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2021-10-11 02:22:30,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-11 02:22:30,308 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:22:30,309 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-11 02:22:30,310 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:22:30,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:22:30,315 INFO L82 PathProgramCache]: Analyzing trace with hash 42445, now seen corresponding path program 1 times [2021-10-11 02:22:30,325 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:22:30,325 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743773726] [2021-10-11 02:22:30,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:22:30,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:22:30,427 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:22:30,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:22:30,451 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:22:30,474 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-11 02:22:30,475 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-10-11 02:22:30,475 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:22:30,498 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:22:30 BoogieIcfgContainer [2021-10-11 02:22:30,498 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:22:30,500 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:22:30,500 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:22:30,500 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:22:30,501 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:22:30" (3/4) ... [2021-10-11 02:22:30,510 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-11 02:22:30,510 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:22:30,515 INFO L168 Benchmark]: Toolchain (without parser) took 921.06 ms. Allocated memory was 86.0 MB in the beginning and 127.9 MB in the end (delta: 41.9 MB). Free memory was 53.6 MB in the beginning and 78.4 MB in the end (delta: -24.9 MB). Peak memory consumption was 13.6 MB. Max. memory is 16.1 GB. [2021-10-11 02:22:30,517 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 86.0 MB. Free memory was 39.3 MB in the beginning and 39.3 MB in the end (delta: 77.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:22:30,519 INFO L168 Benchmark]: CACSL2BoogieTranslator took 259.85 ms. Allocated memory was 86.0 MB in the beginning and 127.9 MB in the end (delta: 41.9 MB). Free memory was 53.4 MB in the beginning and 104.6 MB in the end (delta: -51.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:22:30,521 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.52 ms. Allocated memory is still 127.9 MB. Free memory was 104.1 MB in the beginning and 103.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:22:30,522 INFO L168 Benchmark]: Boogie Preprocessor took 41.42 ms. Allocated memory is still 127.9 MB. Free memory was 103.0 MB in the beginning and 102.0 MB in the end (delta: 997.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:22:30,523 INFO L168 Benchmark]: RCFGBuilder took 283.89 ms. Allocated memory is still 127.9 MB. Free memory was 102.0 MB in the beginning and 90.9 MB in the end (delta: 11.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:22:30,525 INFO L168 Benchmark]: TraceAbstraction took 270.98 ms. Allocated memory is still 127.9 MB. Free memory was 90.4 MB in the beginning and 78.9 MB in the end (delta: 11.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:22:30,525 INFO L168 Benchmark]: Witness Printer took 11.31 ms. Allocated memory is still 127.9 MB. Free memory was 78.9 MB in the beginning and 78.4 MB in the end (delta: 488.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:22:30,536 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 86.0 MB. Free memory was 39.3 MB in the beginning and 39.3 MB in the end (delta: 77.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 259.85 ms. Allocated memory was 86.0 MB in the beginning and 127.9 MB in the end (delta: 41.9 MB). Free memory was 53.4 MB in the beginning and 104.6 MB in the end (delta: -51.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 36.52 ms. Allocated memory is still 127.9 MB. Free memory was 104.1 MB in the beginning and 103.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 41.42 ms. Allocated memory is still 127.9 MB. Free memory was 103.0 MB in the beginning and 102.0 MB in the end (delta: 997.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 283.89 ms. Allocated memory is still 127.9 MB. Free memory was 102.0 MB in the beginning and 90.9 MB in the end (delta: 11.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 270.98 ms. Allocated memory is still 127.9 MB. Free memory was 90.4 MB in the beginning and 78.9 MB in the end (delta: 11.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Witness Printer took 11.31 ms. Allocated memory is still 127.9 MB. Free memory was 78.9 MB in the beginning and 78.4 MB in the end (delta: 488.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 12]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of to_int at line 9, overapproximation of to_real at line 10. Possible FailurePath: [L6] unsigned int i, j; [L7] double d; [L9] i=100.0 [L10] d=i [L11] j=d [L12] COND TRUE !(j==100) [L12] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.1s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s 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 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:22:32,985 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:22:32,987 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:22:33,038 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:22:33,038 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:22:33,043 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:22:33,046 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:22:33,050 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:22:33,053 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:22:33,061 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:22:33,065 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:22:33,066 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:22:33,067 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:22:33,070 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:22:33,071 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:22:33,073 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:22:33,075 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:22:33,078 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:22:33,081 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:22:33,088 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:22:33,091 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:22:33,092 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:22:33,096 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:22:33,097 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:22:33,106 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:22:33,107 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:22:33,107 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:22:33,109 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:22:33,110 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:22:33,111 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:22:33,112 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:22:33,113 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:22:33,115 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:22:33,116 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:22:33,117 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:22:33,117 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:22:33,118 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:22:33,119 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:22:33,119 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:22:33,121 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:22:33,122 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:22:33,123 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf126caf-cb79-45d2-89ec-2f2a5acd20b4/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-11 02:22:33,177 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:22:33,177 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:22:33,179 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:22:33,179 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:22:33,180 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:22:33,180 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:22:33,180 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:22:33,181 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:22:33,181 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:22:33,183 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:22:33,184 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:22:33,185 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:22:33,185 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:22:33,185 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:22:33,185 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:22:33,186 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:22:33,186 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:22:33,186 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-11 02:22:33,187 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-11 02:22:33,187 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:22:33,187 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:22:33,188 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:22:33,188 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:22:33,188 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:22:33,189 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-11 02:22:33,189 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:22:33,189 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:22:33,190 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:22:33,190 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:22:33,190 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:22:33,191 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-11 02:22:33,191 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-11 02:22:33,191 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:22:33,191 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:22:33,192 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:22:33,192 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_cf126caf-cb79-45d2-89ec-2f2a5acd20b4/bin/utaipan-WLngWcDbfI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf126caf-cb79-45d2-89ec-2f2a5acd20b4/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3cf66c963cee9d423d7bbfded96bc288d1ae256e [2021-10-11 02:22:33,646 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:22:33,665 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:22:33,668 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:22:33,669 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:22:33,670 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:22:33,671 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf126caf-cb79-45d2-89ec-2f2a5acd20b4/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/floats-cbmc-regression/float-no-simp1.c [2021-10-11 02:22:33,739 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf126caf-cb79-45d2-89ec-2f2a5acd20b4/bin/utaipan-WLngWcDbfI/data/62fdca1a2/49702dcb9c734421abf9218c4cf5c5e7/FLAG806860832 [2021-10-11 02:22:34,290 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:22:34,290 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf126caf-cb79-45d2-89ec-2f2a5acd20b4/sv-benchmarks/c/floats-cbmc-regression/float-no-simp1.c [2021-10-11 02:22:34,295 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf126caf-cb79-45d2-89ec-2f2a5acd20b4/bin/utaipan-WLngWcDbfI/data/62fdca1a2/49702dcb9c734421abf9218c4cf5c5e7/FLAG806860832 [2021-10-11 02:22:34,642 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf126caf-cb79-45d2-89ec-2f2a5acd20b4/bin/utaipan-WLngWcDbfI/data/62fdca1a2/49702dcb9c734421abf9218c4cf5c5e7 [2021-10-11 02:22:34,645 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:22:34,646 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:22:34,648 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:22:34,648 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:22:34,651 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:22:34,652 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:22:34" (1/1) ... [2021-10-11 02:22:34,654 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66aaeb6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:34, skipping insertion in model container [2021-10-11 02:22:34,654 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:22:34" (1/1) ... [2021-10-11 02:22:34,674 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:22:34,685 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:22:34,811 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf126caf-cb79-45d2-89ec-2f2a5acd20b4/sv-benchmarks/c/floats-cbmc-regression/float-no-simp1.c[352,365] [2021-10-11 02:22:34,815 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:22:34,829 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:22:34,842 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf126caf-cb79-45d2-89ec-2f2a5acd20b4/sv-benchmarks/c/floats-cbmc-regression/float-no-simp1.c[352,365] [2021-10-11 02:22:34,842 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:22:34,855 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:22:34,856 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:34 WrapperNode [2021-10-11 02:22:34,856 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:22:34,857 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:22:34,857 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:22:34,857 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:22:34,865 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:34" (1/1) ... [2021-10-11 02:22:34,874 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:34" (1/1) ... [2021-10-11 02:22:34,889 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:22:34,890 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:22:34,890 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:22:34,891 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:22:34,899 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:34" (1/1) ... [2021-10-11 02:22:34,899 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:34" (1/1) ... [2021-10-11 02:22:34,902 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:34" (1/1) ... [2021-10-11 02:22:34,902 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:34" (1/1) ... [2021-10-11 02:22:34,908 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:34" (1/1) ... [2021-10-11 02:22:34,910 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:34" (1/1) ... [2021-10-11 02:22:34,911 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:34" (1/1) ... [2021-10-11 02:22:34,913 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:22:34,914 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:22:34,915 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:22:34,915 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:22:34,916 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:34" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf126caf-cb79-45d2-89ec-2f2a5acd20b4/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:22:35,003 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:22:35,004 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:22:35,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-11 02:22:35,004 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:22:36,473 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:22:36,474 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-11 02:22:36,475 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:22:36 BoogieIcfgContainer [2021-10-11 02:22:36,475 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:22:36,477 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:22:36,478 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:22:36,481 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:22:36,481 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:22:34" (1/3) ... [2021-10-11 02:22:36,482 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f05d652 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:22:36, skipping insertion in model container [2021-10-11 02:22:36,482 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:34" (2/3) ... [2021-10-11 02:22:36,483 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f05d652 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:22:36, skipping insertion in model container [2021-10-11 02:22:36,483 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:22:36" (3/3) ... [2021-10-11 02:22:36,484 INFO L111 eAbstractionObserver]: Analyzing ICFG float-no-simp1.c [2021-10-11 02:22:36,498 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:22:36,501 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:22:36,512 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 02:22:36,537 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:22:36,537 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:22:36,537 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:22:36,537 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:22:36,538 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:22:36,538 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:22:36,538 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:22:36,538 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:22:36,550 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states. [2021-10-11 02:22:36,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-11 02:22:36,555 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:22:36,556 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-11 02:22:36,556 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:22:36,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:22:36,562 INFO L82 PathProgramCache]: Analyzing trace with hash 925604, now seen corresponding path program 1 times [2021-10-11 02:22:36,574 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:22:36,575 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1750858731] [2021-10-11 02:22:36,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf126caf-cb79-45d2-89ec-2f2a5acd20b4/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2021-10-11 02:22:36,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:22:36,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-11 02:22:36,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:22:36,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:22:36,944 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:22:36,945 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1750858731] [2021-10-11 02:22:36,945 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:22:36,946 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:22:36,946 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342184508] [2021-10-11 02:22:36,951 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:22:36,951 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:22:36,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:22:36,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:22:36,973 INFO L87 Difference]: Start difference. First operand 8 states. Second operand 3 states. [2021-10-11 02:22:37,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:22:37,005 INFO L93 Difference]: Finished difference Result 11 states and 10 transitions. [2021-10-11 02:22:37,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:22:37,010 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2021-10-11 02:22:37,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:22:37,017 INFO L225 Difference]: With dead ends: 11 [2021-10-11 02:22:37,017 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:22:37,020 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:22:37,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:22:37,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:22:37,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:22:37,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:22:37,045 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 4 [2021-10-11 02:22:37,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:22:37,046 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:22:37,046 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:22:37,046 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:22:37,046 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:22:37,261 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2021-10-11 02:22:37,263 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-11 02:22:37,266 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-11 02:22:37,266 INFO L262 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-11 02:22:37,267 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-11 02:22:37,267 INFO L262 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-11 02:22:37,267 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2021-10-11 02:22:37,267 INFO L262 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2021-10-11 02:22:37,267 INFO L262 CegarLoopResult]: For program point L12-1(line 12) no Hoare annotation was computed. [2021-10-11 02:22:37,267 INFO L262 CegarLoopResult]: For program point L4(lines 4 13) no Hoare annotation was computed. [2021-10-11 02:22:37,273 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:22:37 BoogieIcfgContainer [2021-10-11 02:22:37,274 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:22:37,277 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:22:37,278 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:22:37,278 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:22:37,278 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:22:36" (3/4) ... [2021-10-11 02:22:37,281 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:22:37,293 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-10-11 02:22:37,294 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-11 02:22:37,294 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-11 02:22:37,294 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:22:37,344 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf126caf-cb79-45d2-89ec-2f2a5acd20b4/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:22:37,345 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:22:37,347 INFO L168 Benchmark]: Toolchain (without parser) took 2699.68 ms. Allocated memory was 62.9 MB in the beginning and 88.1 MB in the end (delta: 25.2 MB). Free memory was 43.4 MB in the beginning and 67.8 MB in the end (delta: -24.5 MB). Peak memory consumption was 2.6 MB. Max. memory is 16.1 GB. [2021-10-11 02:22:37,347 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 62.9 MB. Free memory is still 43.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:22:37,348 INFO L168 Benchmark]: CACSL2BoogieTranslator took 208.56 ms. Allocated memory is still 62.9 MB. Free memory was 43.0 MB in the beginning and 33.3 MB in the end (delta: 9.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:22:37,348 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.48 ms. Allocated memory is still 62.9 MB. Free memory was 33.3 MB in the beginning and 31.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:22:37,349 INFO L168 Benchmark]: Boogie Preprocessor took 23.65 ms. Allocated memory is still 62.9 MB. Free memory was 31.5 MB in the beginning and 30.3 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:22:37,350 INFO L168 Benchmark]: RCFGBuilder took 1561.17 ms. Allocated memory is still 62.9 MB. Free memory was 30.3 MB in the beginning and 43.3 MB in the end (delta: -12.9 MB). Peak memory consumption was 12.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:22:37,350 INFO L168 Benchmark]: TraceAbstraction took 796.56 ms. Allocated memory was 62.9 MB in the beginning and 88.1 MB in the end (delta: 25.2 MB). Free memory was 42.7 MB in the beginning and 70.2 MB in the end (delta: -27.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:22:37,351 INFO L168 Benchmark]: Witness Printer took 67.97 ms. Allocated memory is still 88.1 MB. Free memory was 70.2 MB in the beginning and 67.8 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:22:37,354 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 62.9 MB. Free memory is still 43.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 208.56 ms. Allocated memory is still 62.9 MB. Free memory was 43.0 MB in the beginning and 33.3 MB in the end (delta: 9.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 32.48 ms. Allocated memory is still 62.9 MB. Free memory was 33.3 MB in the beginning and 31.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 23.65 ms. Allocated memory is still 62.9 MB. Free memory was 31.5 MB in the beginning and 30.3 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 1561.17 ms. Allocated memory is still 62.9 MB. Free memory was 30.3 MB in the beginning and 43.3 MB in the end (delta: -12.9 MB). Peak memory consumption was 12.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 796.56 ms. Allocated memory was 62.9 MB in the beginning and 88.1 MB in the end (delta: 25.2 MB). Free memory was 42.7 MB in the beginning and 70.2 MB in the end (delta: -27.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 67.97 ms. Allocated memory is still 88.1 MB. Free memory was 70.2 MB in the beginning and 67.8 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 8 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.7s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 4 SDtfs, 3 SDslu, 1 SDs, 0 SdLazy, 1 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 0 LocationsWithAnnotation, 0 PreInvPairs, 0 NumberOfFragments, 0 HoareAnnotationTreeSize, 0 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 0 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 3 ConstructedInterpolants, 1 QuantifiedInterpolants, 42 SizeOfPredicates, 4 NumberOfNonLiveVariables, 27 ConjunctsInSsa, 4 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 proved your program to be correct! Received shutdown request...