./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1071.c --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_14b6e30d-eba7-4955-a474-01cc1271f87c/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b6e30d-eba7-4955-a474-01cc1271f87c/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_14b6e30d-eba7-4955-a474-01cc1271f87c/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b6e30d-eba7-4955-a474-01cc1271f87c/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1071.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b6e30d-eba7-4955-a474-01cc1271f87c/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_14b6e30d-eba7-4955-a474-01cc1271f87c/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 341305be8cf30067c8ef09b4a168f6c17078b23f ....................................................................................................................................................................................................................................................................................................... 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_14b6e30d-eba7-4955-a474-01cc1271f87c/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b6e30d-eba7-4955-a474-01cc1271f87c/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_14b6e30d-eba7-4955-a474-01cc1271f87c/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b6e30d-eba7-4955-a474-01cc1271f87c/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1071.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b6e30d-eba7-4955-a474-01cc1271f87c/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_14b6e30d-eba7-4955-a474-01cc1271f87c/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 341305be8cf30067c8ef09b4a168f6c17078b23f ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 02:12:56,122 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:12:56,126 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:12:56,191 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:12:56,192 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:12:56,196 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:12:56,198 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:12:56,202 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:12:56,205 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:12:56,211 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:12:56,212 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:12:56,214 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:12:56,214 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:12:56,217 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:12:56,219 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:12:56,223 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:12:56,225 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:12:56,226 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:12:56,229 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:12:56,237 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:12:56,239 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:12:56,241 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:12:56,244 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:12:56,246 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:12:56,256 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:12:56,257 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:12:56,257 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:12:56,260 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:12:56,260 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:12:56,262 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:12:56,263 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:12:56,264 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:12:56,266 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:12:56,268 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:12:56,270 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:12:56,270 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:12:56,271 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:12:56,271 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:12:56,272 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:12:56,273 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:12:56,274 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:12:56,275 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b6e30d-eba7-4955-a474-01cc1271f87c/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-16 02:12:56,327 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:12:56,327 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:12:56,329 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:12:56,330 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:12:56,330 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:12:56,330 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:12:56,331 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-16 02:12:56,331 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:12:56,338 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:12:56,339 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-16 02:12:56,340 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-16 02:12:56,340 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:12:56,341 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-16 02:12:56,341 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-16 02:12:56,341 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-16 02:12:56,342 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:12:56,343 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:12:56,343 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 02:12:56,343 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:12:56,343 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:12:56,344 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 02:12:56,344 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:12:56,344 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 02:12:56,344 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:12:56,345 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:12:56,345 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 02:12:56,345 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:12:56,346 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 02:12:56,346 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:12:56,348 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:12:56,348 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:12:56,348 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:12:56,349 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:12:56,349 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 02:12:56,349 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-16 02:12:56,350 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-16 02:12:56,350 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 02:12:56,350 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:12:56,350 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:12:56,351 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_14b6e30d-eba7-4955-a474-01cc1271f87c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b6e30d-eba7-4955-a474-01cc1271f87c/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 341305be8cf30067c8ef09b4a168f6c17078b23f [2021-10-16 02:12:56,637 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:12:56,670 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:12:56,673 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:12:56,674 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:12:56,675 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:12:56,676 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b6e30d-eba7-4955-a474-01cc1271f87c/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/float-newlib/float_req_bl_1071.c [2021-10-16 02:12:56,775 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b6e30d-eba7-4955-a474-01cc1271f87c/bin/utaipan-mTDlp9Zugs/data/4b4717f2c/a1c30c62026d4f66aed4afe519e0a56e/FLAGb78ebc928 [2021-10-16 02:12:57,287 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:12:57,288 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b6e30d-eba7-4955-a474-01cc1271f87c/sv-benchmarks/c/float-newlib/float_req_bl_1071.c [2021-10-16 02:12:57,295 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b6e30d-eba7-4955-a474-01cc1271f87c/bin/utaipan-mTDlp9Zugs/data/4b4717f2c/a1c30c62026d4f66aed4afe519e0a56e/FLAGb78ebc928 [2021-10-16 02:12:57,678 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b6e30d-eba7-4955-a474-01cc1271f87c/bin/utaipan-mTDlp9Zugs/data/4b4717f2c/a1c30c62026d4f66aed4afe519e0a56e [2021-10-16 02:12:57,689 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:12:57,691 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:12:57,697 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:12:57,697 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:12:57,702 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:12:57,703 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:12:57" (1/1) ... [2021-10-16 02:12:57,704 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3cbfe108 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:12:57, skipping insertion in model container [2021-10-16 02:12:57,706 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:12:57" (1/1) ... [2021-10-16 02:12:57,714 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:12:57,735 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:12:57,947 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_14b6e30d-eba7-4955-a474-01cc1271f87c/sv-benchmarks/c/float-newlib/float_req_bl_1071.c[1429,1442] [2021-10-16 02:12:57,951 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:12:57,959 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 02:12:57,983 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_14b6e30d-eba7-4955-a474-01cc1271f87c/sv-benchmarks/c/float-newlib/float_req_bl_1071.c[1429,1442] [2021-10-16 02:12:57,984 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:12:58,001 INFO L208 MainTranslator]: Completed translation [2021-10-16 02:12:58,001 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:12:58 WrapperNode [2021-10-16 02:12:58,002 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:12:58,003 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 02:12:58,003 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 02:12:58,004 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 02:12:58,012 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:12:58" (1/1) ... [2021-10-16 02:12:58,022 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:12:58" (1/1) ... [2021-10-16 02:12:58,046 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:12:58,047 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:12:58,047 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:12:58,047 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:12:58,057 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:12:58" (1/1) ... [2021-10-16 02:12:58,057 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:12:58" (1/1) ... [2021-10-16 02:12:58,060 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:12:58" (1/1) ... [2021-10-16 02:12:58,061 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:12:58" (1/1) ... [2021-10-16 02:12:58,069 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:12:58" (1/1) ... [2021-10-16 02:12:58,074 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:12:58" (1/1) ... [2021-10-16 02:12:58,075 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:12:58" (1/1) ... [2021-10-16 02:12:58,078 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:12:58,079 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:12:58,080 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:12:58,080 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:12:58,081 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:12:58" (1/1) ... [2021-10-16 02:12:58,089 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:12:58,101 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b6e30d-eba7-4955-a474-01cc1271f87c/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:12:58,118 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b6e30d-eba7-4955-a474-01cc1271f87c/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:12:58,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b6e30d-eba7-4955-a474-01cc1271f87c/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:12:58,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-16 02:12:58,155 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 02:12:58,155 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-10-16 02:12:58,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-16 02:12:58,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-10-16 02:12:58,156 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:12:58,156 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:12:58,156 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-16 02:12:58,156 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-16 02:12:58,421 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:12:58,422 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2021-10-16 02:12:58,425 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:12:58 BoogieIcfgContainer [2021-10-16 02:12:58,425 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:12:58,427 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:12:58,427 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:12:58,431 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:12:58,432 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:12:57" (1/3) ... [2021-10-16 02:12:58,432 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55169d0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:12:58, skipping insertion in model container [2021-10-16 02:12:58,433 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:12:58" (2/3) ... [2021-10-16 02:12:58,433 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55169d0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:12:58, skipping insertion in model container [2021-10-16 02:12:58,433 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:12:58" (3/3) ... [2021-10-16 02:12:58,435 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1071.c [2021-10-16 02:12:58,441 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:12:58,442 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-16 02:12:58,497 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:12:58,504 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 02:12:58,504 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-16 02:12:58,519 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 16 states have (on average 1.6875) internal successors, (27), 17 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:12:58,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-16 02:12:58,524 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:12:58,525 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:12:58,526 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:12:58,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:12:58,531 INFO L82 PathProgramCache]: Analyzing trace with hash -1750206788, now seen corresponding path program 1 times [2021-10-16 02:12:58,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:12:58,542 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101094458] [2021-10-16 02:12:58,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:12:58,543 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:12:58,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:12:58,806 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 02:12:58,807 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:12:58,808 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101094458] [2021-10-16 02:12:58,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101094458] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:12:58,810 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:12:58,811 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-16 02:12:58,814 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54868169] [2021-10-16 02:12:58,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-16 02:12:58,846 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:12:58,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-16 02:12:58,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 02:12:58,879 INFO L87 Difference]: Start difference. First operand has 18 states, 16 states have (on average 1.6875) internal successors, (27), 17 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:12:58,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:12:58,899 INFO L93 Difference]: Finished difference Result 35 states and 53 transitions. [2021-10-16 02:12:58,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-16 02:12:58,902 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-16 02:12:58,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:12:58,922 INFO L225 Difference]: With dead ends: 35 [2021-10-16 02:12:58,923 INFO L226 Difference]: Without dead ends: 16 [2021-10-16 02:12:58,928 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 02:12:58,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-10-16 02:12:58,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-10-16 02:12:58,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 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 02:12:58,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2021-10-16 02:12:58,970 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 8 [2021-10-16 02:12:58,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:12:58,971 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2021-10-16 02:12:58,971 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:12:58,972 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2021-10-16 02:12:58,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-16 02:12:58,973 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:12:58,973 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:12:58,973 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-16 02:12:58,974 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:12:58,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:12:58,980 INFO L82 PathProgramCache]: Analyzing trace with hash 1144122849, now seen corresponding path program 1 times [2021-10-16 02:12:58,980 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:12:58,981 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761675325] [2021-10-16 02:12:58,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:12:58,982 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:12:59,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-16 02:12:59,133 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-16 02:12:59,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-16 02:12:59,219 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-16 02:12:59,220 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-16 02:12:59,222 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:12:59,224 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-16 02:12:59,232 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 02:12:59,258 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 02:12:59 BoogieIcfgContainer [2021-10-16 02:12:59,259 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 02:12:59,260 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 02:12:59,260 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 02:12:59,260 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 02:12:59,261 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:12:58" (3/4) ... [2021-10-16 02:12:59,265 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-16 02:12:59,265 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 02:12:59,268 INFO L168 Benchmark]: Toolchain (without parser) took 1575.18 ms. Allocated memory was 104.9 MB in the beginning and 125.8 MB in the end (delta: 21.0 MB). Free memory was 74.2 MB in the beginning and 92.0 MB in the end (delta: -17.9 MB). Peak memory consumption was 2.6 MB. Max. memory is 16.1 GB. [2021-10-16 02:12:59,269 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 104.9 MB. Free memory is still 59.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:12:59,270 INFO L168 Benchmark]: CACSL2BoogieTranslator took 305.23 ms. Allocated memory is still 104.9 MB. Free memory was 73.9 MB in the beginning and 78.9 MB in the end (delta: -5.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-16 02:12:59,271 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.08 ms. Allocated memory is still 104.9 MB. Free memory was 78.9 MB in the beginning and 77.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:12:59,272 INFO L168 Benchmark]: Boogie Preprocessor took 31.52 ms. Allocated memory is still 104.9 MB. Free memory was 77.2 MB in the beginning and 75.9 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:12:59,273 INFO L168 Benchmark]: RCFGBuilder took 346.17 ms. Allocated memory is still 104.9 MB. Free memory was 75.9 MB in the beginning and 64.1 MB in the end (delta: 11.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-16 02:12:59,274 INFO L168 Benchmark]: TraceAbstraction took 831.71 ms. Allocated memory was 104.9 MB in the beginning and 125.8 MB in the end (delta: 21.0 MB). Free memory was 63.7 MB in the beginning and 92.0 MB in the end (delta: -28.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:12:59,274 INFO L168 Benchmark]: Witness Printer took 5.91 ms. Allocated memory is still 125.8 MB. Free memory is still 92.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:12:59,279 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 104.9 MB. Free memory is still 59.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 305.23 ms. Allocated memory is still 104.9 MB. Free memory was 73.9 MB in the beginning and 78.9 MB in the end (delta: -5.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 43.08 ms. Allocated memory is still 104.9 MB. Free memory was 78.9 MB in the beginning and 77.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 31.52 ms. Allocated memory is still 104.9 MB. Free memory was 77.2 MB in the beginning and 75.9 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 346.17 ms. Allocated memory is still 104.9 MB. Free memory was 75.9 MB in the beginning and 64.1 MB in the end (delta: 11.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 831.71 ms. Allocated memory was 104.9 MB in the beginning and 125.8 MB in the end (delta: 21.0 MB). Free memory was 63.7 MB in the beginning and 92.0 MB in the end (delta: -28.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 5.91 ms. Allocated memory is still 125.8 MB. Free memory is still 92.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 59]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 46, overapproximation of someBinaryArithmeticFLOAToperation at line 40, overapproximation of bitwiseAnd at line 21. Possible FailurePath: [L54] float x = 0.0f / 0.0f; [L15] __int32_t signbit, w, exponent_less_127; [L17] ieee_float_shape_type gf_u; [L18] gf_u.value = (x) [L19] EXPR gf_u.word [L19] (w) = gf_u.word [L21] signbit = w & 0x80000000 [L22] exponent_less_127 = ((w & 0x7f800000) >> 23) - 127 [L23] COND FALSE !(exponent_less_127 < 23) [L39] COND TRUE exponent_less_127 == 255 [L40] return x + x; [L55] float res = trunc_float(x); [L46] return x != x; [L58] COND TRUE !isnan_float(res) [L59] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 734.7ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 10.4ms, AutomataDifference: 79.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 10.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 20 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 25.2ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 13.1ms SsaConstructionTime, 179.4ms SatisfiabilityAnalysisTime, 87.3ms InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 7 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-16 02:12:59,338 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b6e30d-eba7-4955-a474-01cc1271f87c/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 02:13:01,843 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:13:01,845 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:13:01,892 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:13:01,893 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:13:01,895 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:13:01,897 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:13:01,900 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:13:01,902 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:13:01,903 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:13:01,905 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:13:01,906 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:13:01,907 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:13:01,908 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:13:01,910 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:13:01,912 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:13:01,913 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:13:01,914 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:13:01,916 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:13:01,919 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:13:01,921 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:13:01,923 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:13:01,925 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:13:01,926 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:13:01,930 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:13:01,931 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:13:01,931 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:13:01,932 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:13:01,933 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:13:01,934 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:13:01,935 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:13:01,936 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:13:01,937 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:13:01,938 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:13:01,939 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:13:01,940 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:13:01,940 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:13:01,941 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:13:01,941 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:13:01,942 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:13:01,943 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:13:01,944 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b6e30d-eba7-4955-a474-01cc1271f87c/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-16 02:13:01,971 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:13:01,972 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:13:01,973 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:13:01,973 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:13:01,973 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:13:01,974 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:13:01,974 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:13:01,974 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:13:01,974 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:13:01,975 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:13:01,976 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:13:01,976 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:13:01,976 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:13:01,976 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 02:13:01,977 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:13:01,977 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 02:13:01,977 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:13:01,977 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-16 02:13:01,978 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-16 02:13:01,978 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:13:01,978 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 02:13:01,978 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:13:01,978 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 02:13:01,979 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:13:01,979 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-16 02:13:01,979 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:13:01,980 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:13:01,980 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:13:01,980 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:13:01,980 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 02:13:01,981 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-16 02:13:01,981 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-16 02:13:01,981 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 02:13:01,981 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:13:01,982 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:13:01,982 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_14b6e30d-eba7-4955-a474-01cc1271f87c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b6e30d-eba7-4955-a474-01cc1271f87c/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 341305be8cf30067c8ef09b4a168f6c17078b23f [2021-10-16 02:13:02,446 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:13:02,487 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:13:02,490 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:13:02,492 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:13:02,493 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:13:02,494 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b6e30d-eba7-4955-a474-01cc1271f87c/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/float-newlib/float_req_bl_1071.c [2021-10-16 02:13:02,594 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b6e30d-eba7-4955-a474-01cc1271f87c/bin/utaipan-mTDlp9Zugs/data/241e542e2/3969169a6e6549e29ce8a9ef9cd3a042/FLAG23014a7cf [2021-10-16 02:13:03,267 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:13:03,268 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b6e30d-eba7-4955-a474-01cc1271f87c/sv-benchmarks/c/float-newlib/float_req_bl_1071.c [2021-10-16 02:13:03,274 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b6e30d-eba7-4955-a474-01cc1271f87c/bin/utaipan-mTDlp9Zugs/data/241e542e2/3969169a6e6549e29ce8a9ef9cd3a042/FLAG23014a7cf [2021-10-16 02:13:03,287 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b6e30d-eba7-4955-a474-01cc1271f87c/bin/utaipan-mTDlp9Zugs/data/241e542e2/3969169a6e6549e29ce8a9ef9cd3a042 [2021-10-16 02:13:03,290 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:13:03,291 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:13:03,293 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:13:03,293 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:13:03,296 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:13:03,297 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:13:03" (1/1) ... [2021-10-16 02:13:03,298 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fa3d1e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:13:03, skipping insertion in model container [2021-10-16 02:13:03,299 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:13:03" (1/1) ... [2021-10-16 02:13:03,306 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:13:03,320 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:13:03,475 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_14b6e30d-eba7-4955-a474-01cc1271f87c/sv-benchmarks/c/float-newlib/float_req_bl_1071.c[1429,1442] [2021-10-16 02:13:03,479 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:13:03,493 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 02:13:03,520 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_14b6e30d-eba7-4955-a474-01cc1271f87c/sv-benchmarks/c/float-newlib/float_req_bl_1071.c[1429,1442] [2021-10-16 02:13:03,521 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:13:03,540 INFO L208 MainTranslator]: Completed translation [2021-10-16 02:13:03,540 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:13:03 WrapperNode [2021-10-16 02:13:03,540 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:13:03,542 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 02:13:03,542 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 02:13:03,542 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 02:13:03,551 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:13:03" (1/1) ... [2021-10-16 02:13:03,562 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:13:03" (1/1) ... [2021-10-16 02:13:03,587 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:13:03,588 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:13:03,589 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:13:03,589 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:13:03,598 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:13:03" (1/1) ... [2021-10-16 02:13:03,598 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:13:03" (1/1) ... [2021-10-16 02:13:03,604 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:13:03" (1/1) ... [2021-10-16 02:13:03,604 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:13:03" (1/1) ... [2021-10-16 02:13:03,615 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:13:03" (1/1) ... [2021-10-16 02:13:03,620 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:13:03" (1/1) ... [2021-10-16 02:13:03,623 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:13:03" (1/1) ... [2021-10-16 02:13:03,627 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:13:03,628 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:13:03,628 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:13:03,629 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:13:03,630 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:13:03" (1/1) ... [2021-10-16 02:13:03,638 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:13:03,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b6e30d-eba7-4955-a474-01cc1271f87c/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:13:03,666 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b6e30d-eba7-4955-a474-01cc1271f87c/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:13:03,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b6e30d-eba7-4955-a474-01cc1271f87c/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:13:03,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-16 02:13:03,722 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 02:13:03,722 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2021-10-16 02:13:03,722 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-16 02:13:03,722 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:13:03,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:13:03,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2021-10-16 02:13:03,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-16 02:13:03,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-16 02:13:04,149 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:13:04,149 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2021-10-16 02:13:04,151 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:13:04 BoogieIcfgContainer [2021-10-16 02:13:04,152 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:13:04,154 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:13:04,154 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:13:04,158 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:13:04,158 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:13:03" (1/3) ... [2021-10-16 02:13:04,159 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50a7e1a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:13:04, skipping insertion in model container [2021-10-16 02:13:04,159 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:13:03" (2/3) ... [2021-10-16 02:13:04,160 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50a7e1a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:13:04, skipping insertion in model container [2021-10-16 02:13:04,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:13:04" (3/3) ... [2021-10-16 02:13:04,162 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1071.c [2021-10-16 02:13:04,168 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:13:04,168 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-16 02:13:04,255 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:13:04,263 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 02:13:04,272 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-16 02:13:04,299 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 20 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:13:04,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-16 02:13:04,305 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:13:04,306 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:13:04,307 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:13:04,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:13:04,313 INFO L82 PathProgramCache]: Analyzing trace with hash 1945097259, now seen corresponding path program 1 times [2021-10-16 02:13:04,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:13:04,328 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1590820312] [2021-10-16 02:13:04,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:13:04,330 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:13:04,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b6e30d-eba7-4955-a474-01cc1271f87c/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:13:04,334 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b6e30d-eba7-4955-a474-01cc1271f87c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:13:04,361 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b6e30d-eba7-4955-a474-01cc1271f87c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-16 02:13:04,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:13:04,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-16 02:13:04,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:13:04,529 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 02:13:04,529 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:13:04,567 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 02:13:04,568 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:13:04,569 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1590820312] [2021-10-16 02:13:04,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1590820312] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:13:04,570 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:13:04,570 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-16 02:13:04,572 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373746876] [2021-10-16 02:13:04,577 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-16 02:13:04,578 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:13:04,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-16 02:13:04,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 02:13:04,596 INFO L87 Difference]: Start difference. First operand has 21 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 20 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:13:04,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:13:04,642 INFO L93 Difference]: Finished difference Result 40 states and 58 transitions. [2021-10-16 02:13:04,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-16 02:13:04,644 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-16 02:13:04,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:13:04,653 INFO L225 Difference]: With dead ends: 40 [2021-10-16 02:13:04,654 INFO L226 Difference]: Without dead ends: 18 [2021-10-16 02:13:04,658 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 02:13:04,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-10-16 02:13:04,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-10-16 02:13:04,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 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 02:13:04,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2021-10-16 02:13:04,700 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 10 [2021-10-16 02:13:04,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:13:04,701 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2021-10-16 02:13:04,702 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:13:04,702 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2021-10-16 02:13:04,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-16 02:13:04,703 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:13:04,703 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:13:04,723 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b6e30d-eba7-4955-a474-01cc1271f87c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-16 02:13:04,916 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b6e30d-eba7-4955-a474-01cc1271f87c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:13:04,917 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:13:04,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:13:04,918 INFO L82 PathProgramCache]: Analyzing trace with hash -390209938, now seen corresponding path program 1 times [2021-10-16 02:13:04,918 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:13:04,918 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1492192419] [2021-10-16 02:13:04,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:13:04,919 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:13:04,919 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b6e30d-eba7-4955-a474-01cc1271f87c/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:13:04,922 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b6e30d-eba7-4955-a474-01cc1271f87c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:13:04,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b6e30d-eba7-4955-a474-01cc1271f87c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-16 02:13:05,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:13:05,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 02:13:05,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:13:05,174 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 02:13:05,174 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:13:05,240 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 02:13:05,240 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:13:05,240 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1492192419] [2021-10-16 02:13:05,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1492192419] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:13:05,241 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:13:05,241 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 3] imperfect sequences [] total 5 [2021-10-16 02:13:05,242 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633482749] [2021-10-16 02:13:05,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-16 02:13:05,243 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:13:05,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-16 02:13:05,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:13:05,245 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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 02:13:05,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:13:05,298 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2021-10-16 02:13:05,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:13:05,299 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-16 02:13:05,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:13:05,300 INFO L225 Difference]: With dead ends: 29 [2021-10-16 02:13:05,300 INFO L226 Difference]: Without dead ends: 24 [2021-10-16 02:13:05,301 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 41.2ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:13:05,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-10-16 02:13:05,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 18. [2021-10-16 02:13:05,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 17 states have internal predecessors, (19), 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 02:13:05,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2021-10-16 02:13:05,307 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 11 [2021-10-16 02:13:05,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:13:05,308 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2021-10-16 02:13:05,308 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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 02:13:05,308 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2021-10-16 02:13:05,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-16 02:13:05,309 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:13:05,309 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:13:05,326 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b6e30d-eba7-4955-a474-01cc1271f87c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-16 02:13:05,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b6e30d-eba7-4955-a474-01cc1271f87c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:13:05,523 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:13:05,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:13:05,524 INFO L82 PathProgramCache]: Analyzing trace with hash 843742638, now seen corresponding path program 1 times [2021-10-16 02:13:05,525 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:13:05,526 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [273684312] [2021-10-16 02:13:05,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:13:05,526 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:13:05,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b6e30d-eba7-4955-a474-01cc1271f87c/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:13:05,527 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b6e30d-eba7-4955-a474-01cc1271f87c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:13:05,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b6e30d-eba7-4955-a474-01cc1271f87c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-16 02:13:05,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:13:05,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-16 02:13:05,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:13:05,987 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 02:13:05,987 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:13:06,145 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 02:13:06,146 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:13:06,146 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [273684312] [2021-10-16 02:13:06,147 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [273684312] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:13:06,147 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:13:06,147 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-10-16 02:13:06,148 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685151128] [2021-10-16 02:13:06,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-16 02:13:06,149 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:13:06,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-16 02:13:06,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-16 02:13:06,151 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:13:06,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:13:06,485 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2021-10-16 02:13:06,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-16 02:13:06,487 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-16 02:13:06,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:13:06,488 INFO L225 Difference]: With dead ends: 24 [2021-10-16 02:13:06,488 INFO L226 Difference]: Without dead ends: 17 [2021-10-16 02:13:06,489 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 361.6ms TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2021-10-16 02:13:06,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-10-16 02:13:06,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-10-16 02:13:06,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.0625) internal successors, (17), 16 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:13:06,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2021-10-16 02:13:06,496 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 12 [2021-10-16 02:13:06,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:13:06,497 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2021-10-16 02:13:06,497 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:13:06,497 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2021-10-16 02:13:06,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-16 02:13:06,498 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:13:06,499 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:13:06,516 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b6e30d-eba7-4955-a474-01cc1271f87c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-16 02:13:06,708 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b6e30d-eba7-4955-a474-01cc1271f87c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:13:06,709 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:13:06,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:13:06,710 INFO L82 PathProgramCache]: Analyzing trace with hash -2105231138, now seen corresponding path program 1 times [2021-10-16 02:13:06,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:13:06,711 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [379402686] [2021-10-16 02:13:06,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:13:06,711 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:13:06,711 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b6e30d-eba7-4955-a474-01cc1271f87c/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:13:06,713 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b6e30d-eba7-4955-a474-01cc1271f87c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:13:06,721 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b6e30d-eba7-4955-a474-01cc1271f87c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-16 02:13:06,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:13:06,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-16 02:13:06,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:13:07,134 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 02:13:07,134 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:13:07,310 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 02:13:07,310 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:13:07,310 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [379402686] [2021-10-16 02:13:07,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [379402686] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:13:07,311 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:13:07,311 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-10-16 02:13:07,311 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113000134] [2021-10-16 02:13:07,312 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-16 02:13:07,312 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:13:07,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-16 02:13:07,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-16 02:13:07,313 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand has 8 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 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 02:13:07,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:13:07,458 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2021-10-16 02:13:07,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-16 02:13:07,458 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-16 02:13:07,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:13:07,458 INFO L225 Difference]: With dead ends: 17 [2021-10-16 02:13:07,459 INFO L226 Difference]: Without dead ends: 0 [2021-10-16 02:13:07,459 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 282.2ms TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-10-16 02:13:07,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-16 02:13:07,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-16 02:13:07,460 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 02:13:07,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-16 02:13:07,460 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2021-10-16 02:13:07,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:13:07,461 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-16 02:13:07,461 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 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 02:13:07,461 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-16 02:13:07,461 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-16 02:13:07,464 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:13:07,480 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b6e30d-eba7-4955-a474-01cc1271f87c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-16 02:13:07,680 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b6e30d-eba7-4955-a474-01cc1271f87c/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:13:07,682 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-16 02:13:07,685 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:13:07,722 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:13:07,723 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:13:07,724 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:13:07,735 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:13:07,737 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:13:07,813 INFO L857 garLoopResultBuilder]: For program point L23(lines 23 41) no Hoare annotation was computed. [2021-10-16 02:13:07,814 INFO L857 garLoopResultBuilder]: For program point L23-1(lines 23 41) no Hoare annotation was computed. [2021-10-16 02:13:07,814 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-16 02:13:07,814 INFO L857 garLoopResultBuilder]: For program point L32-1(lines 32 36) no Hoare annotation was computed. [2021-10-16 02:13:07,814 INFO L853 garLoopResultBuilder]: At program point L32-2(lines 32 36) the Hoare annotation is: false [2021-10-16 02:13:07,814 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-16 02:13:07,814 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-16 02:13:07,815 INFO L857 garLoopResultBuilder]: For program point L24(lines 24 37) no Hoare annotation was computed. [2021-10-16 02:13:07,815 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 59) no Hoare annotation was computed. [2021-10-16 02:13:07,815 INFO L857 garLoopResultBuilder]: For program point L16-1(lines 16 20) no Hoare annotation was computed. [2021-10-16 02:13:07,815 INFO L853 garLoopResultBuilder]: At program point L16-2(lines 16 20) the Hoare annotation is: (not (fp.eq ULTIMATE.start_trunc_float_~x ULTIMATE.start_trunc_float_~x)) [2021-10-16 02:13:07,815 INFO L857 garLoopResultBuilder]: For program point L16-3(lines 16 20) no Hoare annotation was computed. [2021-10-16 02:13:07,815 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-16 02:13:07,816 INFO L857 garLoopResultBuilder]: For program point L58(lines 58 61) no Hoare annotation was computed. [2021-10-16 02:13:07,816 INFO L853 garLoopResultBuilder]: At program point L46(line 46) the Hoare annotation is: (and (exists ((ULTIMATE.start_trunc_float_~w~0 (_ BitVec 32))) (= (bvadd (_ bv127 32) ULTIMATE.start_trunc_float_~exponent_less_127~0) (bvashr (bvand (_ bv2139095040 32) ULTIMATE.start_trunc_float_~w~0) (_ bv23 32)))) (exists ((currentRoundingMode RoundingMode)) (= |ULTIMATE.start_trunc_float_#res| (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)))) (not (fp.eq ULTIMATE.start_trunc_float_~x ULTIMATE.start_trunc_float_~x)) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|)) [2021-10-16 02:13:07,816 INFO L853 garLoopResultBuilder]: At program point L42(lines 14 43) the Hoare annotation is: (and (exists ((ULTIMATE.start_trunc_float_~w~0 (_ BitVec 32))) (= (bvadd (_ bv127 32) ULTIMATE.start_trunc_float_~exponent_less_127~0) (bvashr (bvand (_ bv2139095040 32) ULTIMATE.start_trunc_float_~w~0) (_ bv23 32)))) (exists ((currentRoundingMode RoundingMode)) (= |ULTIMATE.start_trunc_float_#res| (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)))) (not (fp.eq ULTIMATE.start_trunc_float_~x ULTIMATE.start_trunc_float_~x))) [2021-10-16 02:13:07,817 INFO L860 garLoopResultBuilder]: At program point L63(lines 48 64) the Hoare annotation is: true [2021-10-16 02:13:07,817 INFO L857 garLoopResultBuilder]: For program point L59(line 59) no Hoare annotation was computed. [2021-10-16 02:13:07,817 INFO L857 garLoopResultBuilder]: For program point L26-1(lines 26 30) no Hoare annotation was computed. [2021-10-16 02:13:07,817 INFO L853 garLoopResultBuilder]: At program point L26-2(lines 26 30) the Hoare annotation is: false [2021-10-16 02:13:07,817 INFO L857 garLoopResultBuilder]: For program point L39(lines 39 40) no Hoare annotation was computed. [2021-10-16 02:13:07,822 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 02:13:07,829 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] [2021-10-16 02:13:07,830 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-16 02:13:07,836 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] [2021-10-16 02:13:07,836 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-16 02:13:07,838 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] [2021-10-16 02:13:07,838 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-16 02:13:07,838 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] [2021-10-16 02:13:07,839 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-16 02:13:07,839 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 02:13:07 BoogieIcfgContainer [2021-10-16 02:13:07,839 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 02:13:07,840 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 02:13:07,840 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 02:13:07,841 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 02:13:07,841 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:13:04" (3/4) ... [2021-10-16 02:13:07,844 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-16 02:13:07,855 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2021-10-16 02:13:07,856 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-10-16 02:13:07,856 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-16 02:13:07,856 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-16 02:13:07,881 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((\exists ULTIMATE.start_trunc_float_~w~0 : bv32 :: ~bvadd64(127bv32, exponent_less_127) == ~bvashr32(~bvand32(2139095040bv32, ULTIMATE.start_trunc_float_~w~0), 23bv32)) && (\exists currentRoundingMode : FloatRoundingMode :: \result == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()))) && !~fp.eq~FLOAT(x, x) [2021-10-16 02:13:07,882 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((\exists ULTIMATE.start_trunc_float_~w~0 : bv32 :: ~bvadd64(127bv32, exponent_less_127) == ~bvashr32(~bvand32(2139095040bv32, ULTIMATE.start_trunc_float_~w~0), 23bv32)) && (\exists currentRoundingMode : FloatRoundingMode :: \result == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()))) && !~fp.eq~FLOAT(x, x)) && 1bv32 == \result [2021-10-16 02:13:07,902 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b6e30d-eba7-4955-a474-01cc1271f87c/bin/utaipan-mTDlp9Zugs/witness.graphml [2021-10-16 02:13:07,903 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 02:13:07,904 INFO L168 Benchmark]: Toolchain (without parser) took 4612.17 ms. Allocated memory was 71.3 MB in the beginning and 109.1 MB in the end (delta: 37.7 MB). Free memory was 53.3 MB in the beginning and 57.7 MB in the end (delta: -4.4 MB). Peak memory consumption was 34.5 MB. Max. memory is 16.1 GB. [2021-10-16 02:13:07,905 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 71.3 MB. Free memory was 53.1 MB in the beginning and 53.0 MB in the end (delta: 54.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:13:07,906 INFO L168 Benchmark]: CACSL2BoogieTranslator took 248.44 ms. Allocated memory is still 71.3 MB. Free memory was 53.2 MB in the beginning and 42.7 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-16 02:13:07,907 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.88 ms. Allocated memory is still 71.3 MB. Free memory was 42.5 MB in the beginning and 40.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:13:07,907 INFO L168 Benchmark]: Boogie Preprocessor took 39.02 ms. Allocated memory is still 71.3 MB. Free memory was 40.9 MB in the beginning and 39.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:13:07,908 INFO L168 Benchmark]: RCFGBuilder took 523.73 ms. Allocated memory is still 71.3 MB. Free memory was 39.4 MB in the beginning and 46.6 MB in the end (delta: -7.2 MB). Peak memory consumption was 8.6 MB. Max. memory is 16.1 GB. [2021-10-16 02:13:07,909 INFO L168 Benchmark]: TraceAbstraction took 3685.78 ms. Allocated memory was 71.3 MB in the beginning and 109.1 MB in the end (delta: 37.7 MB). Free memory was 46.4 MB in the beginning and 60.4 MB in the end (delta: -14.1 MB). Peak memory consumption was 23.9 MB. Max. memory is 16.1 GB. [2021-10-16 02:13:07,909 INFO L168 Benchmark]: Witness Printer took 62.54 ms. Allocated memory is still 109.1 MB. Free memory was 60.4 MB in the beginning and 57.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:13:07,913 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 71.3 MB. Free memory was 53.1 MB in the beginning and 53.0 MB in the end (delta: 54.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 248.44 ms. Allocated memory is still 71.3 MB. Free memory was 53.2 MB in the beginning and 42.7 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 45.88 ms. Allocated memory is still 71.3 MB. Free memory was 42.5 MB in the beginning and 40.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 39.02 ms. Allocated memory is still 71.3 MB. Free memory was 40.9 MB in the beginning and 39.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 523.73 ms. Allocated memory is still 71.3 MB. Free memory was 39.4 MB in the beginning and 46.6 MB in the end (delta: -7.2 MB). Peak memory consumption was 8.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3685.78 ms. Allocated memory was 71.3 MB in the beginning and 109.1 MB in the end (delta: 37.7 MB). Free memory was 46.4 MB in the beginning and 60.4 MB in the end (delta: -14.1 MB). Peak memory consumption was 23.9 MB. Max. memory is 16.1 GB. * Witness Printer took 62.54 ms. Allocated memory is still 109.1 MB. Free memory was 60.4 MB in the beginning and 57.7 MB in the end (delta: 2.7 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 Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] * 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: 59]: 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, 21 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3569.2ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 24.9ms, AutomataDifference: 622.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 133.0ms, InitialAbstractionConstructionTime: 11.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 54 SDtfs, 39 SDslu, 86 SDs, 0 SdLazy, 45 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 151.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 92 GetRequests, 69 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 685.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=0, InterpolantAutomatonStates: 17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 38.7ms AutomataMinimizationTime, 4 MinimizatonAttempts, 6 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 10 NumberOfFragments, 54 HoareAnnotationTreeSize, 6 FomulaSimplifications, 32 FormulaSimplificationTreeSizeReduction, 58.5ms HoareSimplificationTime, 6 FomulaSimplificationsInter, 8 FormulaSimplificationTreeSizeReductionInter, 67.3ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 73.4ms SsaConstructionTime, 211.8ms SatisfiabilityAnalysisTime, 1259.5ms InterpolantComputationTime, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 86 ConstructedInterpolants, 14 QuantifiedInterpolants, 283 SizeOfPredicates, 21 NumberOfNonLiveVariables, 184 ConjunctsInSsa, 22 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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: 32]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 48]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 46]: Loop Invariant [2021-10-16 02:13:07,922 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] [2021-10-16 02:13:07,922 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-16 02:13:07,923 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] [2021-10-16 02:13:07,923 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (((\exists ULTIMATE.start_trunc_float_~w~0 : bv32 :: ~bvadd64(127bv32, exponent_less_127) == ~bvashr32(~bvand32(2139095040bv32, ULTIMATE.start_trunc_float_~w~0), 23bv32)) && (\exists currentRoundingMode : FloatRoundingMode :: \result == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()))) && !~fp.eq~FLOAT(x, x)) && 1bv32 == \result - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: !~fp.eq~FLOAT(x, x) - InvariantResult [Line: 14]: Loop Invariant [2021-10-16 02:13:07,924 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] [2021-10-16 02:13:07,924 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-10-16 02:13:07,924 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] [2021-10-16 02:13:07,925 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: ((\exists ULTIMATE.start_trunc_float_~w~0 : bv32 :: ~bvadd64(127bv32, exponent_less_127) == ~bvashr32(~bvand32(2139095040bv32, ULTIMATE.start_trunc_float_~w~0), 23bv32)) && (\exists currentRoundingMode : FloatRoundingMode :: \result == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()))) && !~fp.eq~FLOAT(x, x) RESULT: Ultimate proved your program to be correct! [2021-10-16 02:13:07,971 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b6e30d-eba7-4955-a474-01cc1271f87c/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...