./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_0930.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_0132ca7b-0af1-4b9c-b9fd-3b229434e7bf/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0132ca7b-0af1-4b9c-b9fd-3b229434e7bf/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_0132ca7b-0af1-4b9c-b9fd-3b229434e7bf/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0132ca7b-0af1-4b9c-b9fd-3b229434e7bf/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0930.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0132ca7b-0af1-4b9c-b9fd-3b229434e7bf/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_0132ca7b-0af1-4b9c-b9fd-3b229434e7bf/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 68ec6db07696364982a927374298598825d0f6ca ................................................................................................................................................................................................................................................................................................................. 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_0132ca7b-0af1-4b9c-b9fd-3b229434e7bf/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0132ca7b-0af1-4b9c-b9fd-3b229434e7bf/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_0132ca7b-0af1-4b9c-b9fd-3b229434e7bf/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0132ca7b-0af1-4b9c-b9fd-3b229434e7bf/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0930.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0132ca7b-0af1-4b9c-b9fd-3b229434e7bf/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_0132ca7b-0af1-4b9c-b9fd-3b229434e7bf/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 68ec6db07696364982a927374298598825d0f6ca ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-16 03:20:23,188 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 03:20:23,189 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 03:20:23,220 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 03:20:23,221 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 03:20:23,222 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 03:20:23,224 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 03:20:23,227 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 03:20:23,229 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 03:20:23,230 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 03:20:23,231 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 03:20:23,233 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 03:20:23,233 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 03:20:23,235 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 03:20:23,237 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 03:20:23,238 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 03:20:23,239 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 03:20:23,240 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 03:20:23,243 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 03:20:23,246 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 03:20:23,248 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 03:20:23,255 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 03:20:23,257 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 03:20:23,258 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 03:20:23,262 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 03:20:23,262 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 03:20:23,263 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 03:20:23,264 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 03:20:23,264 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 03:20:23,266 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 03:20:23,266 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 03:20:23,267 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 03:20:23,272 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 03:20:23,274 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 03:20:23,276 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 03:20:23,276 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 03:20:23,277 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 03:20:23,277 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 03:20:23,277 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 03:20:23,279 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 03:20:23,279 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 03:20:23,280 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0132ca7b-0af1-4b9c-b9fd-3b229434e7bf/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-16 03:20:23,324 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 03:20:23,324 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 03:20:23,325 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 03:20:23,325 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 03:20:23,325 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 03:20:23,325 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 03:20:23,326 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-16 03:20:23,326 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 03:20:23,326 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 03:20:23,326 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-16 03:20:23,326 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-16 03:20:23,326 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 03:20:23,327 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-16 03:20:23,327 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-16 03:20:23,327 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-16 03:20:23,328 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 03:20:23,328 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 03:20:23,328 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 03:20:23,328 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 03:20:23,329 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 03:20:23,329 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 03:20:23,329 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 03:20:23,329 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 03:20:23,329 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 03:20:23,329 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 03:20:23,330 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 03:20:23,330 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 03:20:23,330 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 03:20:23,330 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 03:20:23,330 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 03:20:23,331 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 03:20:23,331 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 03:20:23,331 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 03:20:23,331 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 03:20:23,331 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-16 03:20:23,331 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-16 03:20:23,332 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 03:20:23,332 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 03:20:23,332 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 03:20:23,332 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_0132ca7b-0af1-4b9c-b9fd-3b229434e7bf/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0132ca7b-0af1-4b9c-b9fd-3b229434e7bf/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 68ec6db07696364982a927374298598825d0f6ca [2021-10-16 03:20:23,608 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 03:20:23,635 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 03:20:23,637 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 03:20:23,638 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 03:20:23,642 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 03:20:23,643 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0132ca7b-0af1-4b9c-b9fd-3b229434e7bf/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/float-newlib/float_req_bl_0930.c [2021-10-16 03:20:23,716 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0132ca7b-0af1-4b9c-b9fd-3b229434e7bf/bin/utaipan-mTDlp9Zugs/data/203666c09/2bcd9c740d5447a9a4483fc7d4dc7992/FLAG971705fc6 [2021-10-16 03:20:24,299 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 03:20:24,300 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0132ca7b-0af1-4b9c-b9fd-3b229434e7bf/sv-benchmarks/c/float-newlib/float_req_bl_0930.c [2021-10-16 03:20:24,313 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0132ca7b-0af1-4b9c-b9fd-3b229434e7bf/bin/utaipan-mTDlp9Zugs/data/203666c09/2bcd9c740d5447a9a4483fc7d4dc7992/FLAG971705fc6 [2021-10-16 03:20:24,640 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0132ca7b-0af1-4b9c-b9fd-3b229434e7bf/bin/utaipan-mTDlp9Zugs/data/203666c09/2bcd9c740d5447a9a4483fc7d4dc7992 [2021-10-16 03:20:24,643 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 03:20:24,644 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 03:20:24,659 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 03:20:24,659 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 03:20:24,662 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 03:20:24,663 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:20:24" (1/1) ... [2021-10-16 03:20:24,664 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@130a1c7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:20:24, skipping insertion in model container [2021-10-16 03:20:24,665 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:20:24" (1/1) ... [2021-10-16 03:20:24,672 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 03:20:24,709 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 03:20:24,983 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_0132ca7b-0af1-4b9c-b9fd-3b229434e7bf/sv-benchmarks/c/float-newlib/float_req_bl_0930.c[3104,3117] [2021-10-16 03:20:24,992 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 03:20:25,003 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 03:20:25,071 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_0132ca7b-0af1-4b9c-b9fd-3b229434e7bf/sv-benchmarks/c/float-newlib/float_req_bl_0930.c[3104,3117] [2021-10-16 03:20:25,072 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 03:20:25,092 INFO L208 MainTranslator]: Completed translation [2021-10-16 03:20:25,092 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:20:25 WrapperNode [2021-10-16 03:20:25,093 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 03:20:25,094 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 03:20:25,094 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 03:20:25,094 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 03:20:25,101 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:20:25" (1/1) ... [2021-10-16 03:20:25,121 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:20:25" (1/1) ... [2021-10-16 03:20:25,158 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 03:20:25,159 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 03:20:25,160 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 03:20:25,160 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 03:20:25,168 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:20:25" (1/1) ... [2021-10-16 03:20:25,168 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:20:25" (1/1) ... [2021-10-16 03:20:25,183 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:20:25" (1/1) ... [2021-10-16 03:20:25,183 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:20:25" (1/1) ... [2021-10-16 03:20:25,197 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:20:25" (1/1) ... [2021-10-16 03:20:25,213 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:20:25" (1/1) ... [2021-10-16 03:20:25,216 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:20:25" (1/1) ... [2021-10-16 03:20:25,224 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 03:20:25,225 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 03:20:25,225 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 03:20:25,225 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 03:20:25,226 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:20:25" (1/1) ... [2021-10-16 03:20:25,237 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 03:20:25,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0132ca7b-0af1-4b9c-b9fd-3b229434e7bf/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 03:20:25,270 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0132ca7b-0af1-4b9c-b9fd-3b229434e7bf/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 03:20:25,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0132ca7b-0af1-4b9c-b9fd-3b229434e7bf/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 03:20:25,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-16 03:20:25,316 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 03:20:25,317 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-10-16 03:20:25,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-16 03:20:25,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-10-16 03:20:25,318 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 03:20:25,318 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 03:20:25,318 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-16 03:20:25,319 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-16 03:20:25,890 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 03:20:25,891 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-10-16 03:20:25,893 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:20:25 BoogieIcfgContainer [2021-10-16 03:20:25,893 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 03:20:25,895 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 03:20:25,895 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 03:20:25,912 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 03:20:25,912 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 03:20:24" (1/3) ... [2021-10-16 03:20:25,913 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bbdf3ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:20:25, skipping insertion in model container [2021-10-16 03:20:25,913 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:20:25" (2/3) ... [2021-10-16 03:20:25,913 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bbdf3ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:20:25, skipping insertion in model container [2021-10-16 03:20:25,914 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:20:25" (3/3) ... [2021-10-16 03:20:25,916 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0930.c [2021-10-16 03:20:25,921 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 03:20:25,921 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-16 03:20:25,971 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 03:20:25,981 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 03:20:25,982 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-16 03:20:25,997 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 22 states have (on average 1.6818181818181819) internal successors, (37), 23 states have internal predecessors, (37), 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 03:20:26,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-16 03:20:26,018 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:20:26,019 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:20:26,020 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:20:26,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:20:26,029 INFO L82 PathProgramCache]: Analyzing trace with hash -287982718, now seen corresponding path program 1 times [2021-10-16 03:20:26,040 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 03:20:26,041 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170506584] [2021-10-16 03:20:26,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:20:26,042 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 03:20:26,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:20:26,244 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 03:20:26,244 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 03:20:26,245 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170506584] [2021-10-16 03:20:26,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170506584] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 03:20:26,246 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:20:26,246 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-16 03:20:26,249 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058477022] [2021-10-16 03:20:26,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-16 03:20:26,256 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 03:20:26,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-16 03:20:26,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 03:20:26,280 INFO L87 Difference]: Start difference. First operand has 24 states, 22 states have (on average 1.6818181818181819) internal successors, (37), 23 states have internal predecessors, (37), 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 03:20:26,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:20:26,299 INFO L93 Difference]: Finished difference Result 47 states and 73 transitions. [2021-10-16 03:20:26,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-16 03:20:26,301 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 03:20:26,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:20:26,309 INFO L225 Difference]: With dead ends: 47 [2021-10-16 03:20:26,310 INFO L226 Difference]: Without dead ends: 22 [2021-10-16 03:20:26,312 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 03:20:26,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-10-16 03:20:26,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-10-16 03:20:26,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 21 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:20:26,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2021-10-16 03:20:26,344 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 8 [2021-10-16 03:20:26,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:20:26,344 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2021-10-16 03:20:26,345 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 03:20:26,345 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2021-10-16 03:20:26,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-16 03:20:26,345 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:20:26,346 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:20:26,346 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-16 03:20:26,346 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:20:26,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:20:26,347 INFO L82 PathProgramCache]: Analyzing trace with hash 43856543, now seen corresponding path program 1 times [2021-10-16 03:20:26,347 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 03:20:26,347 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869750527] [2021-10-16 03:20:26,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:20:26,348 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 03:20:26,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-16 03:20:26,392 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-16 03:20:26,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-16 03:20:26,476 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-16 03:20:26,477 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-16 03:20:26,478 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 03:20:26,480 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-16 03:20:26,489 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 03:20:26,533 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 03:20:26 BoogieIcfgContainer [2021-10-16 03:20:26,533 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 03:20:26,534 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 03:20:26,534 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 03:20:26,534 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 03:20:26,535 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:20:25" (3/4) ... [2021-10-16 03:20:26,541 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-16 03:20:26,541 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 03:20:26,544 INFO L168 Benchmark]: Toolchain (without parser) took 1898.23 ms. Allocated memory was 92.3 MB in the beginning and 119.5 MB in the end (delta: 27.3 MB). Free memory was 53.4 MB in the beginning and 46.2 MB in the end (delta: 7.2 MB). Peak memory consumption was 35.3 MB. Max. memory is 16.1 GB. [2021-10-16 03:20:26,544 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 92.3 MB. Free memory is still 69.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 03:20:26,545 INFO L168 Benchmark]: CACSL2BoogieTranslator took 434.37 ms. Allocated memory was 92.3 MB in the beginning and 119.5 MB in the end (delta: 27.3 MB). Free memory was 53.2 MB in the beginning and 93.5 MB in the end (delta: -40.3 MB). Peak memory consumption was 10.1 MB. Max. memory is 16.1 GB. [2021-10-16 03:20:26,546 INFO L168 Benchmark]: Boogie Procedure Inliner took 64.81 ms. Allocated memory is still 119.5 MB. Free memory was 93.5 MB in the beginning and 91.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 03:20:26,547 INFO L168 Benchmark]: Boogie Preprocessor took 64.92 ms. Allocated memory is still 119.5 MB. Free memory was 91.4 MB in the beginning and 90.2 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 03:20:26,547 INFO L168 Benchmark]: RCFGBuilder took 668.62 ms. Allocated memory is still 119.5 MB. Free memory was 89.8 MB in the beginning and 71.8 MB in the end (delta: 18.0 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2021-10-16 03:20:26,548 INFO L168 Benchmark]: TraceAbstraction took 637.86 ms. Allocated memory is still 119.5 MB. Free memory was 71.3 MB in the beginning and 46.6 MB in the end (delta: 24.7 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. [2021-10-16 03:20:26,549 INFO L168 Benchmark]: Witness Printer took 7.95 ms. Allocated memory is still 119.5 MB. Free memory was 46.6 MB in the beginning and 46.2 MB in the end (delta: 440.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 03:20:26,552 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 92.3 MB. Free memory is still 69.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 434.37 ms. Allocated memory was 92.3 MB in the beginning and 119.5 MB in the end (delta: 27.3 MB). Free memory was 53.2 MB in the beginning and 93.5 MB in the end (delta: -40.3 MB). Peak memory consumption was 10.1 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 64.81 ms. Allocated memory is still 119.5 MB. Free memory was 93.5 MB in the beginning and 91.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 64.92 ms. Allocated memory is still 119.5 MB. Free memory was 91.4 MB in the beginning and 90.2 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 668.62 ms. Allocated memory is still 119.5 MB. Free memory was 89.8 MB in the beginning and 71.8 MB in the end (delta: 18.0 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 637.86 ms. Allocated memory is still 119.5 MB. Free memory was 71.3 MB in the beginning and 46.6 MB in the end (delta: 24.7 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. * Witness Printer took 7.95 ms. Allocated memory is still 119.5 MB. Free memory was 46.6 MB in the beginning and 46.2 MB in the end (delta: 440.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 123]: 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 122, overapproximation of someBinaryArithmeticFLOAToperation at line 34, overapproximation of bitwiseAnd at line 33. Possible FailurePath: [L14-L18] static const float ln2_hi_log = 6.9313812256e-01, ln2_lo_log = 9.0580006145e-06, two25_log = 3.355443200e+07, Lg1_log = 6.6666668653e-01, Lg2_log = 4.0000000596e-01, Lg3_log = 2.8571429849e-01, Lg4_log = 2.2222198546e-01, Lg5_log = 1.8183572590e-01, Lg6_log = 1.5313838422e-01, Lg7_log = 1.4798198640e-01; [L20] static const float zero_log = 0.0; [L118] float x = 1.0f; [L23] float hfsq, f, s, z, R, w, t1, t2, dk; [L24] __int32_t k, ix, i, j; VAL [Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, zero_log=0] [L27] ieee_float_shape_type gf_u; [L28] gf_u.value = (x) [L29] EXPR gf_u.word [L29] (ix) = gf_u.word [L32] k = 0 VAL [Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, zero_log=0] [L33] COND TRUE ((ix & 0x7fffffff) == 0) [L34] return -two25_log / zero_log; VAL [Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, zero_log=0] [L119] float res = __ieee754_logf(x); [L122] EXPR res == 0.0f && __signbit_float(res) == 0 VAL [Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, zero_log=0] [L122] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L123] reach_error() VAL [Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, zero_log=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 515.6ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 25.8ms, AutomataDifference: 56.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 10.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 28 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=24occurred 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: 17.3ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 12.1ms SsaConstructionTime, 82.7ms SatisfiabilityAnalysisTime, 78.1ms 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 03:20:26,601 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0132ca7b-0af1-4b9c-b9fd-3b229434e7bf/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 03:20:29,089 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 03:20:29,091 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 03:20:29,123 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 03:20:29,123 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 03:20:29,125 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 03:20:29,127 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 03:20:29,130 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 03:20:29,132 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 03:20:29,133 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 03:20:29,135 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 03:20:29,136 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 03:20:29,137 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 03:20:29,138 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 03:20:29,140 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 03:20:29,141 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 03:20:29,142 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 03:20:29,143 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 03:20:29,146 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 03:20:29,149 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 03:20:29,151 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 03:20:29,152 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 03:20:29,154 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 03:20:29,155 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 03:20:29,159 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 03:20:29,164 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 03:20:29,165 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 03:20:29,166 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 03:20:29,166 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 03:20:29,167 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 03:20:29,168 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 03:20:29,169 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 03:20:29,170 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 03:20:29,170 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 03:20:29,172 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 03:20:29,172 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 03:20:29,173 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 03:20:29,173 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 03:20:29,174 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 03:20:29,175 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 03:20:29,176 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 03:20:29,185 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0132ca7b-0af1-4b9c-b9fd-3b229434e7bf/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-16 03:20:29,219 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 03:20:29,219 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 03:20:29,220 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 03:20:29,220 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 03:20:29,221 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 03:20:29,221 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 03:20:29,221 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 03:20:29,221 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 03:20:29,221 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 03:20:29,222 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 03:20:29,222 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 03:20:29,223 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 03:20:29,223 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 03:20:29,223 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 03:20:29,223 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 03:20:29,223 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 03:20:29,224 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 03:20:29,224 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-16 03:20:29,224 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-16 03:20:29,224 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 03:20:29,224 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 03:20:29,225 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 03:20:29,225 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 03:20:29,225 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 03:20:29,225 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-16 03:20:29,225 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 03:20:29,226 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 03:20:29,226 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 03:20:29,226 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 03:20:29,226 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 03:20:29,226 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-16 03:20:29,226 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-16 03:20:29,227 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 03:20:29,227 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 03:20:29,227 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 03:20:29,227 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_0132ca7b-0af1-4b9c-b9fd-3b229434e7bf/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0132ca7b-0af1-4b9c-b9fd-3b229434e7bf/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 68ec6db07696364982a927374298598825d0f6ca [2021-10-16 03:20:29,626 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 03:20:29,647 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 03:20:29,650 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 03:20:29,651 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 03:20:29,652 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 03:20:29,653 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0132ca7b-0af1-4b9c-b9fd-3b229434e7bf/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/float-newlib/float_req_bl_0930.c [2021-10-16 03:20:29,718 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0132ca7b-0af1-4b9c-b9fd-3b229434e7bf/bin/utaipan-mTDlp9Zugs/data/736d6b972/82f4eeb962fb41a0ba7ed0f3c3c8c304/FLAG22572e301 [2021-10-16 03:20:30,287 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 03:20:30,288 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0132ca7b-0af1-4b9c-b9fd-3b229434e7bf/sv-benchmarks/c/float-newlib/float_req_bl_0930.c [2021-10-16 03:20:30,301 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0132ca7b-0af1-4b9c-b9fd-3b229434e7bf/bin/utaipan-mTDlp9Zugs/data/736d6b972/82f4eeb962fb41a0ba7ed0f3c3c8c304/FLAG22572e301 [2021-10-16 03:20:30,610 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0132ca7b-0af1-4b9c-b9fd-3b229434e7bf/bin/utaipan-mTDlp9Zugs/data/736d6b972/82f4eeb962fb41a0ba7ed0f3c3c8c304 [2021-10-16 03:20:30,612 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 03:20:30,614 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 03:20:30,615 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 03:20:30,615 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 03:20:30,623 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 03:20:30,625 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:20:30" (1/1) ... [2021-10-16 03:20:30,627 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e1728e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:20:30, skipping insertion in model container [2021-10-16 03:20:30,627 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:20:30" (1/1) ... [2021-10-16 03:20:30,634 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 03:20:30,672 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 03:20:30,831 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_0132ca7b-0af1-4b9c-b9fd-3b229434e7bf/sv-benchmarks/c/float-newlib/float_req_bl_0930.c[3104,3117] [2021-10-16 03:20:30,835 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 03:20:30,847 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 03:20:30,891 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_0132ca7b-0af1-4b9c-b9fd-3b229434e7bf/sv-benchmarks/c/float-newlib/float_req_bl_0930.c[3104,3117] [2021-10-16 03:20:30,892 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 03:20:30,909 INFO L208 MainTranslator]: Completed translation [2021-10-16 03:20:30,928 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:20:30 WrapperNode [2021-10-16 03:20:30,928 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 03:20:30,929 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 03:20:30,930 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 03:20:30,930 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 03:20:30,937 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:20:30" (1/1) ... [2021-10-16 03:20:30,950 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:20:30" (1/1) ... [2021-10-16 03:20:30,978 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 03:20:30,979 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 03:20:30,979 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 03:20:30,979 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 03:20:30,987 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:20:30" (1/1) ... [2021-10-16 03:20:30,987 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:20:30" (1/1) ... [2021-10-16 03:20:30,993 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:20:30" (1/1) ... [2021-10-16 03:20:30,994 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:20:30" (1/1) ... [2021-10-16 03:20:31,008 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:20:30" (1/1) ... [2021-10-16 03:20:31,013 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:20:30" (1/1) ... [2021-10-16 03:20:31,016 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:20:30" (1/1) ... [2021-10-16 03:20:31,021 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 03:20:31,022 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 03:20:31,023 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 03:20:31,023 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 03:20:31,024 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:20:30" (1/1) ... [2021-10-16 03:20:31,030 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 03:20:31,042 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0132ca7b-0af1-4b9c-b9fd-3b229434e7bf/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 03:20:31,054 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0132ca7b-0af1-4b9c-b9fd-3b229434e7bf/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 03:20:31,062 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0132ca7b-0af1-4b9c-b9fd-3b229434e7bf/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 03:20:31,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-16 03:20:31,108 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 03:20:31,108 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2021-10-16 03:20:31,109 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-16 03:20:31,109 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 03:20:31,109 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 03:20:31,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2021-10-16 03:20:31,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-16 03:20:31,112 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-16 03:20:45,815 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 03:20:45,815 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-10-16 03:20:45,817 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:20:45 BoogieIcfgContainer [2021-10-16 03:20:45,818 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 03:20:45,820 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 03:20:45,820 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 03:20:45,824 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 03:20:45,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 03:20:30" (1/3) ... [2021-10-16 03:20:45,825 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@740d71a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:20:45, skipping insertion in model container [2021-10-16 03:20:45,826 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:20:30" (2/3) ... [2021-10-16 03:20:45,826 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@740d71a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:20:45, skipping insertion in model container [2021-10-16 03:20:45,827 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:20:45" (3/3) ... [2021-10-16 03:20:45,829 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0930.c [2021-10-16 03:20:45,835 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 03:20:45,835 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-16 03:20:45,893 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 03:20:45,901 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 03:20:45,901 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-16 03:20:45,918 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 32 states have (on average 1.6875) internal successors, (54), 33 states have internal predecessors, (54), 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 03:20:45,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-16 03:20:45,924 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:20:45,925 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:20:45,926 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:20:45,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:20:45,933 INFO L82 PathProgramCache]: Analyzing trace with hash -1904085918, now seen corresponding path program 1 times [2021-10-16 03:20:45,949 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:20:45,950 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [280967429] [2021-10-16 03:20:45,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:20:45,951 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:20:45,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0132ca7b-0af1-4b9c-b9fd-3b229434e7bf/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:20:45,952 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0132ca7b-0af1-4b9c-b9fd-3b229434e7bf/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:20:45,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0132ca7b-0af1-4b9c-b9fd-3b229434e7bf/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-16 03:20:46,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:20:46,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-16 03:20:46,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:20:46,689 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 03:20:46,689 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:20:46,759 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 03:20:46,760 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:20:46,761 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [280967429] [2021-10-16 03:20:46,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [280967429] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:20:46,762 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:20:46,762 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-16 03:20:46,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562705035] [2021-10-16 03:20:46,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-16 03:20:46,770 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:20:46,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-16 03:20:46,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 03:20:46,790 INFO L87 Difference]: Start difference. First operand has 34 states, 32 states have (on average 1.6875) internal successors, (54), 33 states have internal predecessors, (54), 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 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 03:20:46,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:20:46,811 INFO L93 Difference]: Finished difference Result 66 states and 106 transitions. [2021-10-16 03:20:46,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-16 03:20:46,812 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 9 [2021-10-16 03:20:46,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:20:46,823 INFO L225 Difference]: With dead ends: 66 [2021-10-16 03:20:46,832 INFO L226 Difference]: Without dead ends: 31 [2021-10-16 03:20:46,836 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 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 03:20:46,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-10-16 03:20:46,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2021-10-16 03:20:46,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.4) internal successors, (42), 30 states have internal predecessors, (42), 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 03:20:46,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2021-10-16 03:20:46,882 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 9 [2021-10-16 03:20:46,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:20:46,883 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2021-10-16 03:20:46,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 03:20:46,884 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2021-10-16 03:20:46,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-16 03:20:46,885 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:20:46,885 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:20:46,913 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0132ca7b-0af1-4b9c-b9fd-3b229434e7bf/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-16 03:20:47,108 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0132ca7b-0af1-4b9c-b9fd-3b229434e7bf/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:20:47,109 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:20:47,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:20:47,112 INFO L82 PathProgramCache]: Analyzing trace with hash 1484264895, now seen corresponding path program 1 times [2021-10-16 03:20:47,113 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:20:47,113 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1123440010] [2021-10-16 03:20:47,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:20:47,114 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:20:47,114 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0132ca7b-0af1-4b9c-b9fd-3b229434e7bf/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:20:47,115 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0132ca7b-0af1-4b9c-b9fd-3b229434e7bf/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:20:47,118 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0132ca7b-0af1-4b9c-b9fd-3b229434e7bf/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-16 03:20:47,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:20:47,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-16 03:20:47,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:20:48,015 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 03:20:48,015 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:20:48,333 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 03:20:48,334 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:20:48,334 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1123440010] [2021-10-16 03:20:48,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1123440010] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:20:48,335 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:20:48,335 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-16 03:20:48,336 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150457074] [2021-10-16 03:20:48,337 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 03:20:48,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:20:48,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 03:20:48,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-16 03:20:48,345 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 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 03:20:51,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:20:51,179 INFO L93 Difference]: Finished difference Result 60 states and 78 transitions. [2021-10-16 03:20:51,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-16 03:20:51,298 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 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 03:20:51,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:20:51,299 INFO L225 Difference]: With dead ends: 60 [2021-10-16 03:20:51,299 INFO L226 Difference]: Without dead ends: 38 [2021-10-16 03:20:51,301 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 260.4ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-16 03:20:51,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-10-16 03:20:51,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 29. [2021-10-16 03:20:51,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 28 states have internal predecessors, (36), 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 03:20:51,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 36 transitions. [2021-10-16 03:20:51,308 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 36 transitions. Word has length 10 [2021-10-16 03:20:51,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:20:51,308 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 36 transitions. [2021-10-16 03:20:51,309 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 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 03:20:51,309 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 36 transitions. [2021-10-16 03:20:51,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-16 03:20:51,310 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:20:51,311 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:20:51,330 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0132ca7b-0af1-4b9c-b9fd-3b229434e7bf/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-10-16 03:20:51,515 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0132ca7b-0af1-4b9c-b9fd-3b229434e7bf/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:20:51,515 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:20:51,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:20:51,516 INFO L82 PathProgramCache]: Analyzing trace with hash 933425138, now seen corresponding path program 1 times [2021-10-16 03:20:51,517 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:20:51,517 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1164462922] [2021-10-16 03:20:51,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:20:51,518 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:20:51,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0132ca7b-0af1-4b9c-b9fd-3b229434e7bf/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:20:51,521 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0132ca7b-0af1-4b9c-b9fd-3b229434e7bf/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:20:51,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0132ca7b-0af1-4b9c-b9fd-3b229434e7bf/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-16 03:20:51,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:20:51,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-16 03:20:51,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:20:52,597 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 03:20:52,597 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:20:53,058 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 03:20:53,058 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:20:53,059 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1164462922] [2021-10-16 03:20:53,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1164462922] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:20:53,059 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:20:53,059 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-16 03:20:53,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129227591] [2021-10-16 03:20:53,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-16 03:20:53,061 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:20:53,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-16 03:20:53,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-16 03:20:53,063 INFO L87 Difference]: Start difference. First operand 29 states and 36 transitions. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 6 states have internal predecessors, (37), 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 03:21:17,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:21:17,744 INFO L93 Difference]: Finished difference Result 41 states and 47 transitions. [2021-10-16 03:21:17,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-16 03:21:17,745 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 6 states have internal predecessors, (37), 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 20 [2021-10-16 03:21:17,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:21:17,746 INFO L225 Difference]: With dead ends: 41 [2021-10-16 03:21:17,747 INFO L226 Difference]: Without dead ends: 38 [2021-10-16 03:21:17,747 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 647.8ms TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-10-16 03:21:17,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-10-16 03:21:17,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 31. [2021-10-16 03:21:17,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.2666666666666666) internal successors, (38), 30 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:21:17,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 38 transitions. [2021-10-16 03:21:17,756 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 38 transitions. Word has length 20 [2021-10-16 03:21:17,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:21:17,756 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 38 transitions. [2021-10-16 03:21:17,757 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 6 states have internal predecessors, (37), 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 03:21:17,761 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 38 transitions. [2021-10-16 03:21:17,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-16 03:21:17,762 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:21:17,762 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:21:17,778 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0132ca7b-0af1-4b9c-b9fd-3b229434e7bf/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-10-16 03:21:17,963 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0132ca7b-0af1-4b9c-b9fd-3b229434e7bf/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:21:17,963 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:21:17,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:21:17,964 INFO L82 PathProgramCache]: Analyzing trace with hash 935272180, now seen corresponding path program 1 times [2021-10-16 03:21:17,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:21:17,965 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [234128811] [2021-10-16 03:21:17,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:21:17,965 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:21:17,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0132ca7b-0af1-4b9c-b9fd-3b229434e7bf/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:21:17,970 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0132ca7b-0af1-4b9c-b9fd-3b229434e7bf/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:21:17,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0132ca7b-0af1-4b9c-b9fd-3b229434e7bf/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-16 03:21:18,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:21:18,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-16 03:21:18,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:21:19,582 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 03:21:19,583 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:21:20,526 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 03:21:20,526 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:21:20,527 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [234128811] [2021-10-16 03:21:20,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [234128811] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:21:20,527 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:21:20,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-10-16 03:21:20,528 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570296787] [2021-10-16 03:21:20,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-16 03:21:20,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:21:20,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-16 03:21:20,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-10-16 03:21:20,530 INFO L87 Difference]: Start difference. First operand 31 states and 38 transitions. Second operand has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 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 03:21:39,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:21:39,514 INFO L93 Difference]: Finished difference Result 58 states and 65 transitions. [2021-10-16 03:21:39,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-16 03:21:39,514 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 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 20 [2021-10-16 03:21:39,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:21:39,516 INFO L225 Difference]: With dead ends: 58 [2021-10-16 03:21:39,516 INFO L226 Difference]: Without dead ends: 49 [2021-10-16 03:21:39,517 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 1318.2ms TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2021-10-16 03:21:39,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-10-16 03:21:39,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 31. [2021-10-16 03:21:39,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.2) internal successors, (36), 30 states have internal predecessors, (36), 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 03:21:39,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2021-10-16 03:21:39,525 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 20 [2021-10-16 03:21:39,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:21:39,525 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2021-10-16 03:21:39,525 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 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 03:21:39,526 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2021-10-16 03:21:39,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-16 03:21:39,527 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:21:39,527 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:21:39,549 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0132ca7b-0af1-4b9c-b9fd-3b229434e7bf/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-16 03:21:39,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0132ca7b-0af1-4b9c-b9fd-3b229434e7bf/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:21:39,745 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:21:39,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:21:39,746 INFO L82 PathProgramCache]: Analyzing trace with hash 1140293842, now seen corresponding path program 1 times [2021-10-16 03:21:39,746 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:21:39,746 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [568780053] [2021-10-16 03:21:39,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:21:39,747 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:21:39,747 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0132ca7b-0af1-4b9c-b9fd-3b229434e7bf/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:21:39,748 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0132ca7b-0af1-4b9c-b9fd-3b229434e7bf/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:21:39,750 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0132ca7b-0af1-4b9c-b9fd-3b229434e7bf/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-16 03:21:40,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:21:40,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-16 03:21:40,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:21:40,704 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 26 [2021-10-16 03:21:41,610 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 93 treesize of output 57 [2021-10-16 03:21:41,966 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 03:21:41,966 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:22:15,217 WARN L228 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0132ca7b-0af1-4b9c-b9fd-3b229434e7bf/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2021-10-16 03:22:15,218 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:22:15,219 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [568780053] [2021-10-16 03:22:15,220 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0132ca7b-0af1-4b9c-b9fd-3b229434e7bf/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") [2021-10-16 03:22:15,220 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [442679235] [2021-10-16 03:22:15,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:22:15,221 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 03:22:15,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0132ca7b-0af1-4b9c-b9fd-3b229434e7bf/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 03:22:15,225 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0132ca7b-0af1-4b9c-b9fd-3b229434e7bf/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2021-10-16 03:22:15,225 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0132ca7b-0af1-4b9c-b9fd-3b229434e7bf/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 03:22:15,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0132ca7b-0af1-4b9c-b9fd-3b229434e7bf/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2021-10-16 03:22:17,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:22:17,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-16 03:22:17,343 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@1b418379 [2021-10-16 03:22:17,344 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1290646829] [2021-10-16 03:22:17,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:22:17,344 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 03:22:17,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0132ca7b-0af1-4b9c-b9fd-3b229434e7bf/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 03:22:17,346 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0132ca7b-0af1-4b9c-b9fd-3b229434e7bf/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 03:22:17,349 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0132ca7b-0af1-4b9c-b9fd-3b229434e7bf/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-16 03:22:17,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:22:17,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-16 03:22:17,709 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@1b418379 [2021-10-16 03:22:17,710 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:22:17,710 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-10-16 03:22:17,710 ERROR L172 FreeRefinementEngine]: Strategy WALRUS failed to provide any proof altough trace is infeasible [2021-10-16 03:22:17,710 INFO L626 BasicCegarLoop]: Counterexample might be feasible [2021-10-16 03:22:17,723 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 03:22:17,784 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0132ca7b-0af1-4b9c-b9fd-3b229434e7bf/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-10-16 03:22:17,953 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0132ca7b-0af1-4b9c-b9fd-3b229434e7bf/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2021-10-16 03:22:18,145 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0132ca7b-0af1-4b9c-b9fd-3b229434e7bf/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-16 03:22:18,326 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0132ca7b-0af1-4b9c-b9fd-3b229434e7bf/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0132ca7b-0af1-4b9c-b9fd-3b229434e7bf/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0132ca7b-0af1-4b9c-b9fd-3b229434e7bf/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:22:18,333 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 03:22:18,349 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 03:22:18 BoogieIcfgContainer [2021-10-16 03:22:18,349 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 03:22:18,350 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 03:22:18,350 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 03:22:18,350 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 03:22:18,351 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:20:45" (3/4) ... [2021-10-16 03:22:18,354 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-16 03:22:18,355 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 03:22:18,356 INFO L168 Benchmark]: Toolchain (without parser) took 107741.36 ms. Allocated memory was 79.7 MB in the beginning and 98.6 MB in the end (delta: 18.9 MB). Free memory was 62.1 MB in the beginning and 75.0 MB in the end (delta: -12.9 MB). Peak memory consumption was 6.0 MB. Max. memory is 16.1 GB. [2021-10-16 03:22:18,357 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 79.7 MB. Free memory was 60.0 MB in the beginning and 59.9 MB in the end (delta: 60.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 03:22:18,358 INFO L168 Benchmark]: CACSL2BoogieTranslator took 313.53 ms. Allocated memory is still 79.7 MB. Free memory was 61.9 MB in the beginning and 60.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-16 03:22:18,358 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.61 ms. Allocated memory is still 79.7 MB. Free memory was 60.0 MB in the beginning and 57.9 MB in the end (delta: 2.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 03:22:18,359 INFO L168 Benchmark]: Boogie Preprocessor took 42.94 ms. Allocated memory is still 79.7 MB. Free memory was 57.9 MB in the beginning and 56.1 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 03:22:18,360 INFO L168 Benchmark]: RCFGBuilder took 14795.53 ms. Allocated memory is still 79.7 MB. Free memory was 56.1 MB in the beginning and 41.2 MB in the end (delta: 14.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-16 03:22:18,361 INFO L168 Benchmark]: TraceAbstraction took 92529.73 ms. Allocated memory was 79.7 MB in the beginning and 98.6 MB in the end (delta: 18.9 MB). Free memory was 40.7 MB in the beginning and 75.0 MB in the end (delta: -34.3 MB). Peak memory consumption was 30.9 MB. Max. memory is 16.1 GB. [2021-10-16 03:22:18,361 INFO L168 Benchmark]: Witness Printer took 4.60 ms. Allocated memory is still 98.6 MB. Free memory is still 75.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 03:22:18,364 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 79.7 MB. Free memory was 60.0 MB in the beginning and 59.9 MB in the end (delta: 60.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 313.53 ms. Allocated memory is still 79.7 MB. Free memory was 61.9 MB in the beginning and 60.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 48.61 ms. Allocated memory is still 79.7 MB. Free memory was 60.0 MB in the beginning and 57.9 MB in the end (delta: 2.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 42.94 ms. Allocated memory is still 79.7 MB. Free memory was 57.9 MB in the beginning and 56.1 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 14795.53 ms. Allocated memory is still 79.7 MB. Free memory was 56.1 MB in the beginning and 41.2 MB in the end (delta: 14.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 92529.73 ms. Allocated memory was 79.7 MB in the beginning and 98.6 MB in the end (delta: 18.9 MB). Free memory was 40.7 MB in the beginning and 75.0 MB in the end (delta: -34.3 MB). Peak memory consumption was 30.9 MB. Max. memory is 16.1 GB. * Witness Printer took 4.60 ms. Allocated memory is still 98.6 MB. Free memory is still 75.0 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: 123]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L14-L18] static const float ln2_hi_log = 6.9313812256e-01, ln2_lo_log = 9.0580006145e-06, two25_log = 3.355443200e+07, Lg1_log = 6.6666668653e-01, Lg2_log = 4.0000000596e-01, Lg3_log = 2.8571429849e-01, Lg4_log = 2.2222198546e-01, Lg5_log = 1.8183572590e-01, Lg6_log = 1.5313838422e-01, Lg7_log = 1.4798198640e-01; [L20] static const float zero_log = 0.0; [L118] float x = 1.0f; [L23] float hfsq, f, s, z, R, w, t1, t2, dk; [L24] __int32_t k, ix, i, j; [L27] ieee_float_shape_type gf_u; [L28] gf_u.value = (x) [L29] EXPR gf_u.word [L29] (ix) = gf_u.word [L32] k = 0 [L33] COND FALSE !(((ix & 0x7fffffff) == 0)) [L35] COND FALSE !(ix < 0) [L37] COND FALSE !(!((ix) < 0x7f800000L)) [L39] COND FALSE !(((ix) < 0x00800000L)) [L48] k += (ix >> 23) - 127 [L49] ix &= 0x007fffff [L50] i = (ix + (0x95f64 << 3)) & 0x800000 [L52] ieee_float_shape_type sf_u; [L53] sf_u.word = (ix | (i ^ 0x3f800000)) [L54] EXPR sf_u.value [L54] (x) = sf_u.value [L56] k += (i >> 23) [L57] f = x - (float)1.0 [L58] COND TRUE (0x007fffff & (15 + ix)) < 16 [L59] COND FALSE !(f == zero_log) [L67] R = f * f * ((float)0.5 - (float)0.33333333333333333 * f) [L68] COND TRUE k == 0 [L69] return f - R; [L119] float res = __ieee754_logf(x); [L122] EXPR res == 0.0f && __signbit_float(res) == 0 [L122] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L123] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 34 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 92440.4ms, OverallIterations: 5, TraceHistogramMax: 1, EmptinessCheckTime: 14.9ms, AutomataDifference: 46696.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 11.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 140 SDtfs, 158 SDslu, 248 SDs, 0 SdLazy, 91 SolverSat, 15 SolverUnsat, 17 SolverUnknown, 0 SolverNotchecked, 45088.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 118 GetRequests, 91 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 2226.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred in iteration=0, InterpolantAutomatonStates: 21, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 45.0ms AutomataMinimizationTime, 4 MinimizatonAttempts, 34 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 68.7ms SsaConstructionTime, 1824.8ms SatisfiabilityAnalysisTime, 4045.5ms InterpolantComputationTime, 59 NumberOfCodeBlocks, 59 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 110 ConstructedInterpolants, 36 QuantifiedInterpolants, 718 SizeOfPredicates, 20 NumberOfNonLiveVariables, 243 ConjunctsInSsa, 25 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 RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...