./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 b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_554befa3-5663-437e-bef8-f227f53d94b2/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_554befa3-5663-437e-bef8-f227f53d94b2/bin/utaipan-SDwSMHVbGG/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_554befa3-5663-437e-bef8-f227f53d94b2/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_554befa3-5663-437e-bef8-f227f53d94b2/bin/utaipan-SDwSMHVbGG/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_554befa3-5663-437e-bef8-f227f53d94b2/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_554befa3-5663-437e-bef8-f227f53d94b2/bin/utaipan-SDwSMHVbGG --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d0cec7ddb8a2645a0ba1656999ba73d1a21b29e3fbe1129f436b67dd30c2f050 .................................................................................................................................................................................................................................................................................................................. 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_554befa3-5663-437e-bef8-f227f53d94b2/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_554befa3-5663-437e-bef8-f227f53d94b2/bin/utaipan-SDwSMHVbGG/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_554befa3-5663-437e-bef8-f227f53d94b2/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_554befa3-5663-437e-bef8-f227f53d94b2/bin/utaipan-SDwSMHVbGG/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_554befa3-5663-437e-bef8-f227f53d94b2/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_554befa3-5663-437e-bef8-f227f53d94b2/bin/utaipan-SDwSMHVbGG --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d0cec7ddb8a2645a0ba1656999ba73d1a21b29e3fbe1129f436b67dd30c2f050 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-29 05:24:21,175 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 05:24:21,178 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 05:24:21,235 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 05:24:21,236 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 05:24:21,240 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 05:24:21,241 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 05:24:21,245 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 05:24:21,248 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 05:24:21,255 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 05:24:21,257 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 05:24:21,258 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 05:24:21,259 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 05:24:21,262 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 05:24:21,264 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 05:24:21,270 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 05:24:21,272 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 05:24:21,273 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 05:24:21,275 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 05:24:21,284 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 05:24:21,286 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 05:24:21,288 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 05:24:21,291 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 05:24:21,292 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 05:24:21,301 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 05:24:21,301 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 05:24:21,302 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 05:24:21,304 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 05:24:21,305 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 05:24:21,306 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 05:24:21,307 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 05:24:21,308 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 05:24:21,309 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 05:24:21,311 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 05:24:21,312 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 05:24:21,313 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 05:24:21,313 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 05:24:21,314 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 05:24:21,314 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 05:24:21,315 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 05:24:21,315 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 05:24:21,317 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_554befa3-5663-437e-bef8-f227f53d94b2/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-29 05:24:21,364 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 05:24:21,364 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 05:24:21,365 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 05:24:21,365 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 05:24:21,366 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 05:24:21,366 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 05:24:21,366 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-29 05:24:21,366 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 05:24:21,372 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 05:24:21,373 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-29 05:24:21,374 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-29 05:24:21,374 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 05:24:21,374 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-29 05:24:21,374 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-29 05:24:21,374 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-29 05:24:21,375 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 05:24:21,375 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 05:24:21,376 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 05:24:21,376 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 05:24:21,376 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 05:24:21,376 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 05:24:21,376 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 05:24:21,376 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 05:24:21,377 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 05:24:21,377 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 05:24:21,377 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 05:24:21,377 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 05:24:21,377 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 05:24:21,378 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 05:24:21,379 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 05:24:21,379 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:24:21,380 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 05:24:21,380 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 05:24:21,380 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 05:24:21,380 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-29 05:24:21,380 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-29 05:24:21,381 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 05:24:21,381 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 05:24:21,381 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 05:24:21,381 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_554befa3-5663-437e-bef8-f227f53d94b2/bin/utaipan-SDwSMHVbGG/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_554befa3-5663-437e-bef8-f227f53d94b2/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d0cec7ddb8a2645a0ba1656999ba73d1a21b29e3fbe1129f436b67dd30c2f050 [2021-10-29 05:24:21,671 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 05:24:21,690 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 05:24:21,693 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 05:24:21,694 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 05:24:21,695 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 05:24:21,696 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_554befa3-5663-437e-bef8-f227f53d94b2/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/float-newlib/float_req_bl_0930.c [2021-10-29 05:24:21,765 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_554befa3-5663-437e-bef8-f227f53d94b2/bin/utaipan-SDwSMHVbGG/data/00b86f2f9/99ce32acd6f743a0a2c573342f58b10f/FLAGa3f66f98b [2021-10-29 05:24:22,186 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 05:24:22,186 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_554befa3-5663-437e-bef8-f227f53d94b2/sv-benchmarks/c/float-newlib/float_req_bl_0930.c [2021-10-29 05:24:22,203 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_554befa3-5663-437e-bef8-f227f53d94b2/bin/utaipan-SDwSMHVbGG/data/00b86f2f9/99ce32acd6f743a0a2c573342f58b10f/FLAGa3f66f98b [2021-10-29 05:24:22,226 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_554befa3-5663-437e-bef8-f227f53d94b2/bin/utaipan-SDwSMHVbGG/data/00b86f2f9/99ce32acd6f743a0a2c573342f58b10f [2021-10-29 05:24:22,229 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 05:24:22,232 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 05:24:22,235 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 05:24:22,236 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 05:24:22,240 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 05:24:22,240 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:24:22" (1/1) ... [2021-10-29 05:24:22,242 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56b0b6f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:24:22, skipping insertion in model container [2021-10-29 05:24:22,242 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:24:22" (1/1) ... [2021-10-29 05:24:22,250 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 05:24:22,288 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 05:24:22,580 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_554befa3-5663-437e-bef8-f227f53d94b2/sv-benchmarks/c/float-newlib/float_req_bl_0930.c[3104,3117] [2021-10-29 05:24:22,592 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:24:22,602 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 05:24:22,664 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_554befa3-5663-437e-bef8-f227f53d94b2/sv-benchmarks/c/float-newlib/float_req_bl_0930.c[3104,3117] [2021-10-29 05:24:22,664 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:24:22,678 INFO L208 MainTranslator]: Completed translation [2021-10-29 05:24:22,678 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:24:22 WrapperNode [2021-10-29 05:24:22,679 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 05:24:22,680 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 05:24:22,680 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 05:24:22,680 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 05:24:22,687 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:24:22" (1/1) ... [2021-10-29 05:24:22,696 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:24:22" (1/1) ... [2021-10-29 05:24:22,722 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 05:24:22,723 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 05:24:22,723 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 05:24:22,723 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 05:24:22,732 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:24:22" (1/1) ... [2021-10-29 05:24:22,732 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:24:22" (1/1) ... [2021-10-29 05:24:22,735 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:24:22" (1/1) ... [2021-10-29 05:24:22,736 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:24:22" (1/1) ... [2021-10-29 05:24:22,746 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:24:22" (1/1) ... [2021-10-29 05:24:22,751 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:24:22" (1/1) ... [2021-10-29 05:24:22,753 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:24:22" (1/1) ... [2021-10-29 05:24:22,757 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 05:24:22,758 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 05:24:22,758 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 05:24:22,758 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 05:24:22,759 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:24:22" (1/1) ... [2021-10-29 05:24:22,766 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:24:22,779 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_554befa3-5663-437e-bef8-f227f53d94b2/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:24:22,793 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_554befa3-5663-437e-bef8-f227f53d94b2/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 05:24:22,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_554befa3-5663-437e-bef8-f227f53d94b2/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 05:24:22,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-29 05:24:22,829 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 05:24:22,829 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-10-29 05:24:22,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-29 05:24:22,830 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-10-29 05:24:22,830 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 05:24:22,830 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 05:24:22,830 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-29 05:24:22,830 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-29 05:24:23,238 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 05:24:23,238 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-10-29 05:24:23,240 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:24:23 BoogieIcfgContainer [2021-10-29 05:24:23,241 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 05:24:23,242 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 05:24:23,243 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 05:24:23,246 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 05:24:23,246 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:24:22" (1/3) ... [2021-10-29 05:24:23,247 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41a56291 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:24:23, skipping insertion in model container [2021-10-29 05:24:23,247 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:24:22" (2/3) ... [2021-10-29 05:24:23,247 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41a56291 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:24:23, skipping insertion in model container [2021-10-29 05:24:23,247 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:24:23" (3/3) ... [2021-10-29 05:24:23,248 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0930.c [2021-10-29 05:24:23,254 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 05:24:23,254 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-29 05:24:23,309 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 05:24:23,339 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-29 05:24:23,339 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-29 05:24:23,354 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) [2021-10-29 05:24:23,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-29 05:24:23,359 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:24:23,360 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:24:23,360 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:24:23,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:24:23,372 INFO L85 PathProgramCache]: Analyzing trace with hash -287982718, now seen corresponding path program 1 times [2021-10-29 05:24:23,379 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:24:23,380 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3397185] [2021-10-29 05:24:23,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:24:23,381 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:24:23,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:24:23,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:24:23,527 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:24:23,528 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3397185] [2021-10-29 05:24:23,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3397185] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:24:23,529 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:24:23,529 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-29 05:24:23,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402091834] [2021-10-29 05:24:23,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-29 05:24:23,535 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:24:23,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-29 05:24:23,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-29 05:24:23,550 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) [2021-10-29 05:24:23,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:24:23,566 INFO L93 Difference]: Finished difference Result 47 states and 73 transitions. [2021-10-29 05:24:23,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-29 05:24:23,567 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-29 05:24:23,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:24:23,575 INFO L225 Difference]: With dead ends: 47 [2021-10-29 05:24:23,575 INFO L226 Difference]: Without dead ends: 22 [2021-10-29 05:24:23,578 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-29 05:24:23,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-10-29 05:24:23,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-10-29 05:24:23,606 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) [2021-10-29 05:24:23,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2021-10-29 05:24:23,630 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 8 [2021-10-29 05:24:23,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:24:23,631 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2021-10-29 05:24:23,631 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:24:23,631 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2021-10-29 05:24:23,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-29 05:24:23,632 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:24:23,632 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:24:23,632 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-29 05:24:23,632 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:24:23,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:24:23,634 INFO L85 PathProgramCache]: Analyzing trace with hash 43856543, now seen corresponding path program 1 times [2021-10-29 05:24:23,635 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:24:23,635 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498472364] [2021-10-29 05:24:23,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:24:23,635 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:24:23,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 05:24:23,730 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 05:24:23,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 05:24:23,824 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-29 05:24:23,825 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-29 05:24:23,827 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:24:23,829 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-29 05:24:23,833 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1] [2021-10-29 05:24:23,835 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 05:24:23,863 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 05:24:23 BoogieIcfgContainer [2021-10-29 05:24:23,863 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 05:24:23,864 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 05:24:23,864 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 05:24:23,864 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 05:24:23,864 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:24:23" (3/4) ... [2021-10-29 05:24:23,867 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-29 05:24:23,867 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 05:24:23,869 INFO L168 Benchmark]: Toolchain (without parser) took 1636.64 ms. Allocated memory was 115.3 MB in the beginning and 146.8 MB in the end (delta: 31.5 MB). Free memory was 75.3 MB in the beginning and 116.1 MB in the end (delta: -40.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:24:23,870 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 115.3 MB. Free memory is still 92.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:24:23,871 INFO L168 Benchmark]: CACSL2BoogieTranslator took 443.64 ms. Allocated memory is still 115.3 MB. Free memory was 75.0 MB in the beginning and 86.7 MB in the end (delta: -11.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-29 05:24:23,871 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.94 ms. Allocated memory is still 115.3 MB. Free memory was 86.7 MB in the beginning and 84.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:24:23,872 INFO L168 Benchmark]: Boogie Preprocessor took 33.76 ms. Allocated memory is still 115.3 MB. Free memory was 84.6 MB in the beginning and 83.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:24:23,873 INFO L168 Benchmark]: RCFGBuilder took 483.13 ms. Allocated memory is still 115.3 MB. Free memory was 83.1 MB in the beginning and 64.9 MB in the end (delta: 18.1 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2021-10-29 05:24:23,874 INFO L168 Benchmark]: TraceAbstraction took 620.64 ms. Allocated memory was 115.3 MB in the beginning and 146.8 MB in the end (delta: 31.5 MB). Free memory was 64.0 MB in the beginning and 117.1 MB in the end (delta: -53.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:24:23,874 INFO L168 Benchmark]: Witness Printer took 4.04 ms. Allocated memory is still 146.8 MB. Free memory is still 116.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:24:23,878 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 115.3 MB. Free memory is still 92.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 443.64 ms. Allocated memory is still 115.3 MB. Free memory was 75.0 MB in the beginning and 86.7 MB in the end (delta: -11.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 42.94 ms. Allocated memory is still 115.3 MB. Free memory was 86.7 MB in the beginning and 84.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 33.76 ms. Allocated memory is still 115.3 MB. Free memory was 84.6 MB in the beginning and 83.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 483.13 ms. Allocated memory is still 115.3 MB. Free memory was 83.1 MB in the beginning and 64.9 MB in the end (delta: 18.1 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 620.64 ms. Allocated memory was 115.3 MB in the beginning and 146.8 MB in the end (delta: 31.5 MB). Free memory was 64.0 MB in the beginning and 117.1 MB in the end (delta: -53.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 4.04 ms. Allocated memory is still 146.8 MB. Free memory is still 116.1 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, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 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: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 28 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=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, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 7 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-29 05:24:23,929 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_554befa3-5663-437e-bef8-f227f53d94b2/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-b2eff8b [2021-10-29 05:24:26,264 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 05:24:26,268 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 05:24:26,312 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 05:24:26,313 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 05:24:26,314 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 05:24:26,316 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 05:24:26,318 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 05:24:26,323 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 05:24:26,325 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 05:24:26,326 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 05:24:26,328 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 05:24:26,329 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 05:24:26,335 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 05:24:26,336 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 05:24:26,338 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 05:24:26,339 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 05:24:26,340 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 05:24:26,346 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 05:24:26,352 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 05:24:26,358 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 05:24:26,359 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 05:24:26,361 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 05:24:26,363 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 05:24:26,368 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 05:24:26,373 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 05:24:26,374 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 05:24:26,377 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 05:24:26,377 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 05:24:26,379 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 05:24:26,380 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 05:24:26,381 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 05:24:26,382 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 05:24:26,384 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 05:24:26,385 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 05:24:26,386 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 05:24:26,399 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 05:24:26,403 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 05:24:26,404 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 05:24:26,405 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 05:24:26,407 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 05:24:26,408 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_554befa3-5663-437e-bef8-f227f53d94b2/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-29 05:24:26,439 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 05:24:26,439 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 05:24:26,440 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 05:24:26,440 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 05:24:26,441 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 05:24:26,441 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 05:24:26,441 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 05:24:26,441 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 05:24:26,442 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 05:24:26,442 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 05:24:26,443 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 05:24:26,443 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 05:24:26,443 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 05:24:26,443 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 05:24:26,444 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 05:24:26,444 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 05:24:26,444 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 05:24:26,444 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-29 05:24:26,444 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-29 05:24:26,445 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 05:24:26,445 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 05:24:26,445 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 05:24:26,445 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 05:24:26,446 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 05:24:26,446 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-29 05:24:26,446 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 05:24:26,446 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:24:26,447 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 05:24:26,447 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 05:24:26,447 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 05:24:26,447 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-29 05:24:26,447 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-29 05:24:26,448 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 05:24:26,448 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 05:24:26,448 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 05:24:26,448 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_554befa3-5663-437e-bef8-f227f53d94b2/bin/utaipan-SDwSMHVbGG/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_554befa3-5663-437e-bef8-f227f53d94b2/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d0cec7ddb8a2645a0ba1656999ba73d1a21b29e3fbe1129f436b67dd30c2f050 [2021-10-29 05:24:26,840 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 05:24:26,861 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 05:24:26,863 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 05:24:26,865 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 05:24:26,865 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 05:24:26,866 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_554befa3-5663-437e-bef8-f227f53d94b2/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/float-newlib/float_req_bl_0930.c [2021-10-29 05:24:26,935 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_554befa3-5663-437e-bef8-f227f53d94b2/bin/utaipan-SDwSMHVbGG/data/683ca2cce/812639d4430c4c6e83eb5f3919ce2890/FLAG5577a8f25 [2021-10-29 05:24:27,503 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 05:24:27,503 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_554befa3-5663-437e-bef8-f227f53d94b2/sv-benchmarks/c/float-newlib/float_req_bl_0930.c [2021-10-29 05:24:27,517 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_554befa3-5663-437e-bef8-f227f53d94b2/bin/utaipan-SDwSMHVbGG/data/683ca2cce/812639d4430c4c6e83eb5f3919ce2890/FLAG5577a8f25 [2021-10-29 05:24:27,846 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_554befa3-5663-437e-bef8-f227f53d94b2/bin/utaipan-SDwSMHVbGG/data/683ca2cce/812639d4430c4c6e83eb5f3919ce2890 [2021-10-29 05:24:27,848 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 05:24:27,849 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 05:24:27,851 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 05:24:27,851 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 05:24:27,854 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 05:24:27,855 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:24:27" (1/1) ... [2021-10-29 05:24:27,857 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@184cc8c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:24:27, skipping insertion in model container [2021-10-29 05:24:27,857 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:24:27" (1/1) ... [2021-10-29 05:24:27,868 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 05:24:27,903 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 05:24:28,067 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_554befa3-5663-437e-bef8-f227f53d94b2/sv-benchmarks/c/float-newlib/float_req_bl_0930.c[3104,3117] [2021-10-29 05:24:28,083 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:24:28,105 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 05:24:28,183 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_554befa3-5663-437e-bef8-f227f53d94b2/sv-benchmarks/c/float-newlib/float_req_bl_0930.c[3104,3117] [2021-10-29 05:24:28,184 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:24:28,201 INFO L208 MainTranslator]: Completed translation [2021-10-29 05:24:28,202 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:24:28 WrapperNode [2021-10-29 05:24:28,202 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 05:24:28,203 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 05:24:28,203 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 05:24:28,204 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 05:24:28,211 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:24:28" (1/1) ... [2021-10-29 05:24:28,247 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:24:28" (1/1) ... [2021-10-29 05:24:28,279 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 05:24:28,280 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 05:24:28,280 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 05:24:28,280 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 05:24:28,289 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:24:28" (1/1) ... [2021-10-29 05:24:28,289 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:24:28" (1/1) ... [2021-10-29 05:24:28,294 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:24:28" (1/1) ... [2021-10-29 05:24:28,295 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:24:28" (1/1) ... [2021-10-29 05:24:28,322 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:24:28" (1/1) ... [2021-10-29 05:24:28,327 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:24:28" (1/1) ... [2021-10-29 05:24:28,330 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:24:28" (1/1) ... [2021-10-29 05:24:28,334 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 05:24:28,335 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 05:24:28,335 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 05:24:28,336 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 05:24:28,336 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:24:28" (1/1) ... [2021-10-29 05:24:28,343 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:24:28,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_554befa3-5663-437e-bef8-f227f53d94b2/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:24:28,368 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_554befa3-5663-437e-bef8-f227f53d94b2/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 05:24:28,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_554befa3-5663-437e-bef8-f227f53d94b2/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 05:24:28,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-29 05:24:28,418 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 05:24:28,418 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2021-10-29 05:24:28,419 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-29 05:24:28,419 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 05:24:28,419 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 05:24:28,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2021-10-29 05:24:28,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-29 05:24:28,420 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-29 05:24:41,033 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 05:24:41,033 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-10-29 05:24:41,035 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:24:41 BoogieIcfgContainer [2021-10-29 05:24:41,035 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 05:24:41,037 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 05:24:41,037 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 05:24:41,039 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 05:24:41,040 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:24:27" (1/3) ... [2021-10-29 05:24:41,041 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17f7dcb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:24:41, skipping insertion in model container [2021-10-29 05:24:41,041 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:24:28" (2/3) ... [2021-10-29 05:24:41,041 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17f7dcb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:24:41, skipping insertion in model container [2021-10-29 05:24:41,041 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:24:41" (3/3) ... [2021-10-29 05:24:41,043 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0930.c [2021-10-29 05:24:41,048 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 05:24:41,048 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-29 05:24:41,093 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 05:24:41,099 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-29 05:24:41,099 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-29 05:24:41,112 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) [2021-10-29 05:24:41,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-29 05:24:41,117 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:24:41,118 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:24:41,119 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:24:41,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:24:41,124 INFO L85 PathProgramCache]: Analyzing trace with hash -1904085918, now seen corresponding path program 1 times [2021-10-29 05:24:41,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:24:41,136 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1679290620] [2021-10-29 05:24:41,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:24:41,137 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:24:41,137 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_554befa3-5663-437e-bef8-f227f53d94b2/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:24:41,138 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_554befa3-5663-437e-bef8-f227f53d94b2/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:24:41,140 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_554befa3-5663-437e-bef8-f227f53d94b2/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-29 05:24:41,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:24:41,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-29 05:24:41,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:24:41,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:24:41,787 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:24:41,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:24:41,849 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:24:41,849 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1679290620] [2021-10-29 05:24:41,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1679290620] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:24:41,850 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:24:41,850 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-29 05:24:41,852 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842245923] [2021-10-29 05:24:41,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-29 05:24:41,857 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:24:41,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-29 05:24:41,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-29 05:24:41,872 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) [2021-10-29 05:24:41,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:24:41,889 INFO L93 Difference]: Finished difference Result 66 states and 106 transitions. [2021-10-29 05:24:41,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-29 05:24:41,890 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 [2021-10-29 05:24:41,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:24:41,899 INFO L225 Difference]: With dead ends: 66 [2021-10-29 05:24:41,899 INFO L226 Difference]: Without dead ends: 31 [2021-10-29 05:24:41,901 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-29 05:24:41,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-10-29 05:24:41,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2021-10-29 05:24:41,930 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) [2021-10-29 05:24:41,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2021-10-29 05:24:41,932 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 9 [2021-10-29 05:24:41,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:24:41,933 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2021-10-29 05:24:41,933 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) [2021-10-29 05:24:41,934 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2021-10-29 05:24:41,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-29 05:24:41,934 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:24:41,934 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:24:41,955 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_554befa3-5663-437e-bef8-f227f53d94b2/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-29 05:24:42,149 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_554befa3-5663-437e-bef8-f227f53d94b2/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:24:42,150 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:24:42,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:24:42,150 INFO L85 PathProgramCache]: Analyzing trace with hash 1484264895, now seen corresponding path program 1 times [2021-10-29 05:24:42,151 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:24:42,151 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2121599582] [2021-10-29 05:24:42,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:24:42,152 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:24:42,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_554befa3-5663-437e-bef8-f227f53d94b2/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:24:42,153 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_554befa3-5663-437e-bef8-f227f53d94b2/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:24:42,157 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_554befa3-5663-437e-bef8-f227f53d94b2/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-29 05:24:42,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:24:42,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-29 05:24:42,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:24:42,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:24:42,909 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:24:43,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:24:43,192 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:24:43,192 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2121599582] [2021-10-29 05:24:43,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2121599582] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:24:43,193 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:24:43,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-29 05:24:43,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763159042] [2021-10-29 05:24:43,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-29 05:24:43,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:24:43,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-29 05:24:43,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-29 05:24:43,196 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) [2021-10-29 05:24:45,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:24:45,964 INFO L93 Difference]: Finished difference Result 60 states and 78 transitions. [2021-10-29 05:24:46,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-29 05:24:46,070 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 [2021-10-29 05:24:46,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:24:46,071 INFO L225 Difference]: With dead ends: 60 [2021-10-29 05:24:46,071 INFO L226 Difference]: Without dead ends: 38 [2021-10-29 05:24:46,072 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-29 05:24:46,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-10-29 05:24:46,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 29. [2021-10-29 05:24:46,076 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) [2021-10-29 05:24:46,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 36 transitions. [2021-10-29 05:24:46,077 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 36 transitions. Word has length 10 [2021-10-29 05:24:46,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:24:46,078 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 36 transitions. [2021-10-29 05:24:46,078 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) [2021-10-29 05:24:46,078 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 36 transitions. [2021-10-29 05:24:46,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-29 05:24:46,079 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:24:46,079 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:24:46,097 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_554befa3-5663-437e-bef8-f227f53d94b2/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-29 05:24:46,292 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_554befa3-5663-437e-bef8-f227f53d94b2/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:24:46,292 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:24:46,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:24:46,293 INFO L85 PathProgramCache]: Analyzing trace with hash 933425138, now seen corresponding path program 1 times [2021-10-29 05:24:46,293 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:24:46,293 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1396744963] [2021-10-29 05:24:46,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:24:46,294 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:24:46,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_554befa3-5663-437e-bef8-f227f53d94b2/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:24:46,299 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_554befa3-5663-437e-bef8-f227f53d94b2/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:24:46,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_554befa3-5663-437e-bef8-f227f53d94b2/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-29 05:24:46,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:24:46,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-29 05:24:46,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:24:47,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:24:47,224 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:24:47,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:24:47,598 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:24:47,598 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1396744963] [2021-10-29 05:24:47,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1396744963] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:24:47,598 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:24:47,599 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-29 05:24:47,599 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427502047] [2021-10-29 05:24:47,599 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-29 05:24:47,599 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:24:47,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-29 05:24:47,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-29 05:24:47,600 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) [2021-10-29 05:25:12,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:25:12,344 INFO L93 Difference]: Finished difference Result 41 states and 47 transitions. [2021-10-29 05:25:12,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-29 05:25:12,345 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 [2021-10-29 05:25:12,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:25:12,346 INFO L225 Difference]: With dead ends: 41 [2021-10-29 05:25:12,346 INFO L226 Difference]: Without dead ends: 38 [2021-10-29 05:25:12,347 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-10-29 05:25:12,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-10-29 05:25:12,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 31. [2021-10-29 05:25:12,352 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) [2021-10-29 05:25:12,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 38 transitions. [2021-10-29 05:25:12,353 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 38 transitions. Word has length 20 [2021-10-29 05:25:12,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:25:12,353 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 38 transitions. [2021-10-29 05:25:12,354 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) [2021-10-29 05:25:12,354 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 38 transitions. [2021-10-29 05:25:12,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-29 05:25:12,355 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:25:12,355 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:25:12,377 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_554befa3-5663-437e-bef8-f227f53d94b2/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-29 05:25:12,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_554befa3-5663-437e-bef8-f227f53d94b2/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:25:12,556 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:25:12,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:25:12,556 INFO L85 PathProgramCache]: Analyzing trace with hash 935272180, now seen corresponding path program 1 times [2021-10-29 05:25:12,557 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:25:12,557 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1861199680] [2021-10-29 05:25:12,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:25:12,557 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:25:12,558 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_554befa3-5663-437e-bef8-f227f53d94b2/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:25:12,559 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_554befa3-5663-437e-bef8-f227f53d94b2/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:25:12,562 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_554befa3-5663-437e-bef8-f227f53d94b2/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-29 05:25:13,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:25:13,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-29 05:25:13,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:25:14,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:25:14,024 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:25:14,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:25:14,842 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:25:14,842 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1861199680] [2021-10-29 05:25:14,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1861199680] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:25:14,842 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:25:14,842 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-10-29 05:25:14,843 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803599372] [2021-10-29 05:25:14,843 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-29 05:25:14,843 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:25:14,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-29 05:25:14,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-10-29 05:25:14,845 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) [2021-10-29 05:25:32,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:25:32,386 INFO L93 Difference]: Finished difference Result 58 states and 65 transitions. [2021-10-29 05:25:32,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-29 05:25:32,401 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 [2021-10-29 05:25:32,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:25:32,401 INFO L225 Difference]: With dead ends: 58 [2021-10-29 05:25:32,402 INFO L226 Difference]: Without dead ends: 49 [2021-10-29 05:25:32,402 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2021-10-29 05:25:32,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-10-29 05:25:32,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 31. [2021-10-29 05:25:32,405 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) [2021-10-29 05:25:32,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2021-10-29 05:25:32,406 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 20 [2021-10-29 05:25:32,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:25:32,406 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2021-10-29 05:25:32,407 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) [2021-10-29 05:25:32,407 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2021-10-29 05:25:32,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-29 05:25:32,407 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:25:32,407 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:25:32,424 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_554befa3-5663-437e-bef8-f227f53d94b2/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-29 05:25:32,608 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_554befa3-5663-437e-bef8-f227f53d94b2/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:25:32,608 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:25:32,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:25:32,608 INFO L85 PathProgramCache]: Analyzing trace with hash 1140293842, now seen corresponding path program 1 times [2021-10-29 05:25:32,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:25:32,609 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [185695645] [2021-10-29 05:25:32,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:25:32,609 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:25:32,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_554befa3-5663-437e-bef8-f227f53d94b2/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:25:32,610 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_554befa3-5663-437e-bef8-f227f53d94b2/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:25:32,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_554befa3-5663-437e-bef8-f227f53d94b2/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-29 05:25:33,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:25:33,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-29 05:25:33,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:25:33,466 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 [2021-10-29 05:25:34,254 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 [2021-10-29 05:25:34,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:25:34,567 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:25:48,977 WARN L228 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_554befa3-5663-437e-bef8-f227f53d94b2/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2021-10-29 05:25:48,978 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:25:48,978 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [185695645] [2021-10-29 05:25:48,978 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_554befa3-5663-437e-bef8-f227f53d94b2/bin/utaipan-SDwSMHVbGG/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") [2021-10-29 05:25:48,979 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [486243137] [2021-10-29 05:25:48,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:25:48,979 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-29 05:25:48,979 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_554befa3-5663-437e-bef8-f227f53d94b2/bin/utaipan-SDwSMHVbGG/cvc4 [2021-10-29 05:25:48,983 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_554befa3-5663-437e-bef8-f227f53d94b2/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2021-10-29 05:25:48,983 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_554befa3-5663-437e-bef8-f227f53d94b2/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-29 05:25:48,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_554befa3-5663-437e-bef8-f227f53d94b2/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2021-10-29 05:25:50,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:25:50,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-29 05:25:50,545 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@584ba764 [2021-10-29 05:25:50,545 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1431011546] [2021-10-29 05:25:50,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:25:50,545 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:25:50,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_554befa3-5663-437e-bef8-f227f53d94b2/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:25:50,549 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_554befa3-5663-437e-bef8-f227f53d94b2/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 05:25:50,562 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_554befa3-5663-437e-bef8-f227f53d94b2/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-29 05:25:50,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:25:50,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-29 05:25:50,878 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@584ba764 [2021-10-29 05:25:50,878 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:25:50,878 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-10-29 05:25:50,878 ERROR L172 FreeRefinementEngine]: Strategy WALRUS failed to provide any proof altough trace is infeasible [2021-10-29 05:25:50,879 INFO L627 BasicCegarLoop]: Counterexample might be feasible [2021-10-29 05:25:50,884 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:25:50,933 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_554befa3-5663-437e-bef8-f227f53d94b2/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-10-29 05:25:51,092 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_554befa3-5663-437e-bef8-f227f53d94b2/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2021-10-29 05:25:51,304 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_554befa3-5663-437e-bef8-f227f53d94b2/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-29 05:25:51,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_554befa3-5663-437e-bef8-f227f53d94b2/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_554befa3-5663-437e-bef8-f227f53d94b2/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_554befa3-5663-437e-bef8-f227f53d94b2/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:25:51,490 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2021-10-29 05:25:51,492 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 05:25:51,511 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 05:25:51 BoogieIcfgContainer [2021-10-29 05:25:51,511 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 05:25:51,512 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 05:25:51,512 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 05:25:51,512 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 05:25:51,512 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:24:41" (3/4) ... [2021-10-29 05:25:51,524 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-29 05:25:51,524 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 05:25:51,526 INFO L168 Benchmark]: Toolchain (without parser) took 83675.58 ms. Allocated memory was 56.6 MB in the beginning and 77.6 MB in the end (delta: 21.0 MB). Free memory was 35.0 MB in the beginning and 50.4 MB in the end (delta: -15.4 MB). Peak memory consumption was 5.7 MB. Max. memory is 16.1 GB. [2021-10-29 05:25:51,527 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 56.6 MB. Free memory is still 37.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:25:51,528 INFO L168 Benchmark]: CACSL2BoogieTranslator took 351.68 ms. Allocated memory was 56.6 MB in the beginning and 77.6 MB in the end (delta: 21.0 MB). Free memory was 34.8 MB in the beginning and 59.3 MB in the end (delta: -24.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-29 05:25:51,528 INFO L168 Benchmark]: Boogie Procedure Inliner took 76.07 ms. Allocated memory is still 77.6 MB. Free memory was 59.3 MB in the beginning and 57.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:25:51,533 INFO L168 Benchmark]: Boogie Preprocessor took 54.50 ms. Allocated memory is still 77.6 MB. Free memory was 57.2 MB in the beginning and 55.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:25:51,535 INFO L168 Benchmark]: RCFGBuilder took 12699.92 ms. Allocated memory is still 77.6 MB. Free memory was 55.3 MB in the beginning and 59.5 MB in the end (delta: -4.1 MB). Peak memory consumption was 18.7 MB. Max. memory is 16.1 GB. [2021-10-29 05:25:51,536 INFO L168 Benchmark]: TraceAbstraction took 70474.54 ms. Allocated memory is still 77.6 MB. Free memory was 58.8 MB in the beginning and 50.4 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.7 MB. Max. memory is 16.1 GB. [2021-10-29 05:25:51,536 INFO L168 Benchmark]: Witness Printer took 12.82 ms. Allocated memory is still 77.6 MB. Free memory is still 50.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:25:51,539 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 56.6 MB. Free memory is still 37.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 351.68 ms. Allocated memory was 56.6 MB in the beginning and 77.6 MB in the end (delta: 21.0 MB). Free memory was 34.8 MB in the beginning and 59.3 MB in the end (delta: -24.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 76.07 ms. Allocated memory is still 77.6 MB. Free memory was 59.3 MB in the beginning and 57.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 54.50 ms. Allocated memory is still 77.6 MB. Free memory was 57.2 MB in the beginning and 55.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 12699.92 ms. Allocated memory is still 77.6 MB. Free memory was 55.3 MB in the beginning and 59.5 MB in the end (delta: -4.1 MB). Peak memory consumption was 18.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 70474.54 ms. Allocated memory is still 77.6 MB. Free memory was 58.8 MB in the beginning and 50.4 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.7 MB. Max. memory is 16.1 GB. * Witness Printer took 12.82 ms. Allocated memory is still 77.6 MB. Free memory is still 50.4 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, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 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: 70.3s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 45.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 140 SDtfs, 158 SDslu, 230 SDs, 0 SdLazy, 91 SolverSat, 16 SolverUnsat, 18 SolverUnknown, 0 SolverNotchecked, 43.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 118 GetRequests, 91 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 1.8s Time, 0.0s 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, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 34 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 2.1s SatisfiabilityAnalysisTime, 19.1s InterpolantComputationTime, 79 NumberOfCodeBlocks, 79 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 129 ConstructedInterpolants, 44 QuantifiedInterpolants, 1147 SizeOfPredicates, 30 NumberOfNonLiveVariables, 316 ConjunctsInSsa, 39 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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...