./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1121b.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_2e0e3fa1-3f6f-4e5a-a4d0-fb9653a7b7c3/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e0e3fa1-3f6f-4e5a-a4d0-fb9653a7b7c3/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_2e0e3fa1-3f6f-4e5a-a4d0-fb9653a7b7c3/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e0e3fa1-3f6f-4e5a-a4d0-fb9653a7b7c3/bin/utaipan-SDwSMHVbGG/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1121b.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e0e3fa1-3f6f-4e5a-a4d0-fb9653a7b7c3/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_2e0e3fa1-3f6f-4e5a-a4d0-fb9653a7b7c3/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 16c784491c1bbafa07f396e2da5c8acc0901ffa28fc7d85f1b184d422e9c5e0e ...................................................................................................................................................................................................................................................................................................................... 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_2e0e3fa1-3f6f-4e5a-a4d0-fb9653a7b7c3/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e0e3fa1-3f6f-4e5a-a4d0-fb9653a7b7c3/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_2e0e3fa1-3f6f-4e5a-a4d0-fb9653a7b7c3/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e0e3fa1-3f6f-4e5a-a4d0-fb9653a7b7c3/bin/utaipan-SDwSMHVbGG/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1121b.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e0e3fa1-3f6f-4e5a-a4d0-fb9653a7b7c3/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_2e0e3fa1-3f6f-4e5a-a4d0-fb9653a7b7c3/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 16c784491c1bbafa07f396e2da5c8acc0901ffa28fc7d85f1b184d422e9c5e0e ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-29 04:43:31,895 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 04:43:31,898 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 04:43:31,938 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 04:43:31,939 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 04:43:31,941 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 04:43:31,943 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 04:43:31,947 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 04:43:31,950 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 04:43:31,952 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 04:43:31,954 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 04:43:31,956 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 04:43:31,957 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 04:43:31,959 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 04:43:31,961 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 04:43:31,963 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 04:43:31,965 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 04:43:31,967 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 04:43:31,970 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 04:43:31,973 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 04:43:31,976 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 04:43:31,978 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 04:43:31,980 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 04:43:31,982 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 04:43:31,987 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 04:43:31,988 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 04:43:31,988 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 04:43:31,990 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 04:43:31,991 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 04:43:31,993 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 04:43:31,993 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 04:43:31,995 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 04:43:31,996 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 04:43:31,997 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 04:43:32,000 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 04:43:32,000 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 04:43:32,001 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 04:43:32,002 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 04:43:32,003 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 04:43:32,004 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 04:43:32,005 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 04:43:32,007 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e0e3fa1-3f6f-4e5a-a4d0-fb9653a7b7c3/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-29 04:43:32,042 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 04:43:32,043 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 04:43:32,044 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 04:43:32,045 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 04:43:32,045 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 04:43:32,045 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 04:43:32,046 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-29 04:43:32,046 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 04:43:32,046 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 04:43:32,047 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-29 04:43:32,047 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-29 04:43:32,048 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 04:43:32,048 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-29 04:43:32,048 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-29 04:43:32,049 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-29 04:43:32,049 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 04:43:32,050 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 04:43:32,050 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 04:43:32,050 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 04:43:32,051 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 04:43:32,051 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 04:43:32,051 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 04:43:32,052 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 04:43:32,052 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 04:43:32,052 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 04:43:32,053 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 04:43:32,053 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 04:43:32,053 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 04:43:32,054 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 04:43:32,054 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 04:43:32,054 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 04:43:32,055 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 04:43:32,055 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 04:43:32,055 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 04:43:32,056 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-29 04:43:32,056 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-29 04:43:32,056 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 04:43:32,056 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 04:43:32,057 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 04:43:32,057 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_2e0e3fa1-3f6f-4e5a-a4d0-fb9653a7b7c3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e0e3fa1-3f6f-4e5a-a4d0-fb9653a7b7c3/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 16c784491c1bbafa07f396e2da5c8acc0901ffa28fc7d85f1b184d422e9c5e0e [2021-10-29 04:43:32,368 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 04:43:32,397 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 04:43:32,400 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 04:43:32,402 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 04:43:32,403 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 04:43:32,404 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e0e3fa1-3f6f-4e5a-a4d0-fb9653a7b7c3/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/float-newlib/float_req_bl_1121b.c [2021-10-29 04:43:32,502 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e0e3fa1-3f6f-4e5a-a4d0-fb9653a7b7c3/bin/utaipan-SDwSMHVbGG/data/07abe0e46/fac8967681f74a149f7e14ab8e94631b/FLAGaf24cba55 [2021-10-29 04:43:33,050 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 04:43:33,052 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e0e3fa1-3f6f-4e5a-a4d0-fb9653a7b7c3/sv-benchmarks/c/float-newlib/float_req_bl_1121b.c [2021-10-29 04:43:33,070 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e0e3fa1-3f6f-4e5a-a4d0-fb9653a7b7c3/bin/utaipan-SDwSMHVbGG/data/07abe0e46/fac8967681f74a149f7e14ab8e94631b/FLAGaf24cba55 [2021-10-29 04:43:33,395 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e0e3fa1-3f6f-4e5a-a4d0-fb9653a7b7c3/bin/utaipan-SDwSMHVbGG/data/07abe0e46/fac8967681f74a149f7e14ab8e94631b [2021-10-29 04:43:33,398 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 04:43:33,401 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 04:43:33,404 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 04:43:33,405 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 04:43:33,409 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 04:43:33,410 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:43:33" (1/1) ... [2021-10-29 04:43:33,414 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5163d3b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:43:33, skipping insertion in model container [2021-10-29 04:43:33,415 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:43:33" (1/1) ... [2021-10-29 04:43:33,426 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 04:43:33,451 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 04:43:33,730 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_2e0e3fa1-3f6f-4e5a-a4d0-fb9653a7b7c3/sv-benchmarks/c/float-newlib/float_req_bl_1121b.c[2700,2713] [2021-10-29 04:43:33,734 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 04:43:33,749 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 04:43:33,822 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_2e0e3fa1-3f6f-4e5a-a4d0-fb9653a7b7c3/sv-benchmarks/c/float-newlib/float_req_bl_1121b.c[2700,2713] [2021-10-29 04:43:33,839 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 04:43:33,862 INFO L208 MainTranslator]: Completed translation [2021-10-29 04:43:33,862 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:43:33 WrapperNode [2021-10-29 04:43:33,863 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 04:43:33,864 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 04:43:33,864 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 04:43:33,864 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 04:43:33,876 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:43:33" (1/1) ... [2021-10-29 04:43:33,908 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:43:33" (1/1) ... [2021-10-29 04:43:33,953 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 04:43:33,954 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 04:43:33,954 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 04:43:33,955 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 04:43:33,965 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:43:33" (1/1) ... [2021-10-29 04:43:33,966 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:43:33" (1/1) ... [2021-10-29 04:43:33,980 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:43:33" (1/1) ... [2021-10-29 04:43:33,981 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:43:33" (1/1) ... [2021-10-29 04:43:33,993 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:43:33" (1/1) ... [2021-10-29 04:43:34,001 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:43:33" (1/1) ... [2021-10-29 04:43:34,004 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:43:33" (1/1) ... [2021-10-29 04:43:34,008 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 04:43:34,010 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 04:43:34,010 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 04:43:34,010 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 04:43:34,011 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:43:33" (1/1) ... [2021-10-29 04:43:34,021 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 04:43:34,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e0e3fa1-3f6f-4e5a-a4d0-fb9653a7b7c3/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 04:43:34,050 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e0e3fa1-3f6f-4e5a-a4d0-fb9653a7b7c3/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 04:43:34,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e0e3fa1-3f6f-4e5a-a4d0-fb9653a7b7c3/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 04:43:34,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-29 04:43:34,137 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 04:43:34,138 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-29 04:43:34,138 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-10-29 04:43:34,138 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-10-29 04:43:34,138 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 04:43:34,139 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 04:43:34,139 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-29 04:43:34,139 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2021-10-29 04:43:34,139 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-29 04:43:34,880 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 04:43:34,880 INFO L299 CfgBuilder]: Removed 20 assume(true) statements. [2021-10-29 04:43:34,883 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:43:34 BoogieIcfgContainer [2021-10-29 04:43:34,884 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 04:43:34,886 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 04:43:34,886 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 04:43:34,897 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 04:43:34,898 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 04:43:33" (1/3) ... [2021-10-29 04:43:34,900 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10aeb96c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:43:34, skipping insertion in model container [2021-10-29 04:43:34,901 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:43:33" (2/3) ... [2021-10-29 04:43:34,902 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10aeb96c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:43:34, skipping insertion in model container [2021-10-29 04:43:34,902 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:43:34" (3/3) ... [2021-10-29 04:43:34,906 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1121b.c [2021-10-29 04:43:34,911 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 04:43:34,912 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-29 04:43:34,962 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 04:43:34,968 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 04:43:34,969 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-29 04:43:34,982 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 32 states have (on average 1.75) internal successors, (56), 33 states have internal predecessors, (56), 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 04:43:34,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-29 04:43:34,988 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:43:34,989 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:43:34,990 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:43:34,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:43:34,996 INFO L85 PathProgramCache]: Analyzing trace with hash -2021166095, now seen corresponding path program 1 times [2021-10-29 04:43:35,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:43:35,009 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270108238] [2021-10-29 04:43:35,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:43:35,010 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:43:35,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:43:35,200 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 04:43:35,201 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 04:43:35,202 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270108238] [2021-10-29 04:43:35,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270108238] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 04:43:35,203 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:43:35,204 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-29 04:43:35,206 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63403900] [2021-10-29 04:43:35,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-29 04:43:35,213 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 04:43:35,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-29 04:43:35,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-29 04:43:35,233 INFO L87 Difference]: Start difference. First operand has 34 states, 32 states have (on average 1.75) internal successors, (56), 33 states have internal predecessors, (56), 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 04:43:35,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:43:35,257 INFO L93 Difference]: Finished difference Result 67 states and 111 transitions. [2021-10-29 04:43:35,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-29 04:43:35,259 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 04:43:35,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:43:35,270 INFO L225 Difference]: With dead ends: 67 [2021-10-29 04:43:35,271 INFO L226 Difference]: Without dead ends: 32 [2021-10-29 04:43:35,274 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 04:43:35,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-10-29 04:43:35,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2021-10-29 04:43:35,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.4193548387096775) internal successors, (44), 31 states have internal predecessors, (44), 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 04:43:35,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 44 transitions. [2021-10-29 04:43:35,313 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 44 transitions. Word has length 8 [2021-10-29 04:43:35,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:43:35,313 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 44 transitions. [2021-10-29 04:43:35,314 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 04:43:35,314 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 44 transitions. [2021-10-29 04:43:35,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-29 04:43:35,315 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:43:35,315 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:43:35,315 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-29 04:43:35,316 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:43:35,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:43:35,317 INFO L85 PathProgramCache]: Analyzing trace with hash 342564116, now seen corresponding path program 1 times [2021-10-29 04:43:35,317 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:43:35,318 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558499425] [2021-10-29 04:43:35,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:43:35,318 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:43:35,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 04:43:35,412 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 04:43:35,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 04:43:35,539 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-29 04:43:35,539 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-29 04:43:35,542 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 04:43:35,544 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-29 04:43:35,549 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1] [2021-10-29 04:43:35,553 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 04:43:35,585 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 04:43:35 BoogieIcfgContainer [2021-10-29 04:43:35,585 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 04:43:35,586 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 04:43:35,586 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 04:43:35,586 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 04:43:35,587 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:43:34" (3/4) ... [2021-10-29 04:43:35,591 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-29 04:43:35,591 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 04:43:35,594 INFO L168 Benchmark]: Toolchain (without parser) took 2190.78 ms. Allocated memory was 94.4 MB in the beginning and 127.9 MB in the end (delta: 33.6 MB). Free memory was 59.8 MB in the beginning and 85.2 MB in the end (delta: -25.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-29 04:43:35,594 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 94.4 MB. Free memory was 66.4 MB in the beginning and 66.4 MB in the end (delta: 21.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 04:43:35,595 INFO L168 Benchmark]: CACSL2BoogieTranslator took 458.95 ms. Allocated memory is still 94.4 MB. Free memory was 59.6 MB in the beginning and 68.8 MB in the end (delta: -9.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-29 04:43:35,596 INFO L168 Benchmark]: Boogie Procedure Inliner took 89.30 ms. Allocated memory is still 94.4 MB. Free memory was 68.4 MB in the beginning and 66.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 04:43:35,597 INFO L168 Benchmark]: Boogie Preprocessor took 54.56 ms. Allocated memory is still 94.4 MB. Free memory was 66.7 MB in the beginning and 65.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 04:43:35,598 INFO L168 Benchmark]: RCFGBuilder took 874.46 ms. Allocated memory is still 94.4 MB. Free memory was 65.0 MB in the beginning and 46.9 MB in the end (delta: 18.1 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2021-10-29 04:43:35,599 INFO L168 Benchmark]: TraceAbstraction took 698.87 ms. Allocated memory was 94.4 MB in the beginning and 127.9 MB in the end (delta: 33.6 MB). Free memory was 46.5 MB in the beginning and 85.8 MB in the end (delta: -39.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 04:43:35,600 INFO L168 Benchmark]: Witness Printer took 5.40 ms. Allocated memory is still 127.9 MB. Free memory was 85.8 MB in the beginning and 85.2 MB in the end (delta: 608.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 04:43:35,604 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 94.4 MB. Free memory was 66.4 MB in the beginning and 66.4 MB in the end (delta: 21.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 458.95 ms. Allocated memory is still 94.4 MB. Free memory was 59.6 MB in the beginning and 68.8 MB in the end (delta: -9.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 89.30 ms. Allocated memory is still 94.4 MB. Free memory was 68.4 MB in the beginning and 66.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 54.56 ms. Allocated memory is still 94.4 MB. Free memory was 66.7 MB in the beginning and 65.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 874.46 ms. Allocated memory is still 94.4 MB. Free memory was 65.0 MB in the beginning and 46.9 MB in the end (delta: 18.1 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 698.87 ms. Allocated memory was 94.4 MB in the beginning and 127.9 MB in the end (delta: 33.6 MB). Free memory was 46.5 MB in the beginning and 85.8 MB in the end (delta: -39.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 5.40 ms. Allocated memory is still 127.9 MB. Free memory was 85.8 MB in the beginning and 85.2 MB in the end (delta: 608.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s 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: 124]: 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 110, overapproximation of someUnaryDOUBLEoperation at line 16, overapproximation of bitwiseAnd at line 32, overapproximation of someUnaryFLOAToperation at line 119, overapproximation of bitwiseXor at line 33, overapproximation of someBinaryArithmeticFLOAToperation at line 37. Possible FailurePath: [L14-L17] static const float one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L118] float x = __VERIFIER_nondet_float(); [L119] float y = -0.0f; [L20] __int32_t n, hx, hy, hz, ix, iy, sx, i; VAL [one_fmod=1, Zero_fmod={9:0}] [L23] ieee_float_shape_type gf_u; [L24] gf_u.value = (x) [L25] EXPR gf_u.word [L25] (hx) = gf_u.word [L28] ieee_float_shape_type gf_u; [L29] gf_u.value = (y) [L30] EXPR gf_u.word [L30] (hy) = gf_u.word [L32] sx = hx & 0x80000000 [L33] hx ^= sx [L34] hy &= 0x7fffffff VAL [one_fmod=1, Zero_fmod={9:0}] [L36] COND TRUE ((hy) == 0) || !((hx) < 0x7f800000L) || ((hy) > 0x7f800000L) [L37] return (x * y) / (x * y); VAL [one_fmod=1, Zero_fmod={9:0}] [L120] float res = fmod_float(x, y); [L110] return x != x; [L123] COND TRUE !isnan_float(res) [L124] reach_error() VAL [one_fmod=1, Zero_fmod={9:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 34 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: 46 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=34occurred 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, 18 NumberOfCodeBlocks, 18 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 04:43:35,655 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e0e3fa1-3f6f-4e5a-a4d0-fb9653a7b7c3/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 04:43:38,655 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 04:43:38,660 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 04:43:38,736 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 04:43:38,737 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 04:43:38,743 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 04:43:38,745 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 04:43:38,756 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 04:43:38,760 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 04:43:38,770 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 04:43:38,771 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 04:43:38,773 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 04:43:38,773 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 04:43:38,775 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 04:43:38,777 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 04:43:38,779 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 04:43:38,780 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 04:43:38,781 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 04:43:38,787 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 04:43:38,802 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 04:43:38,805 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 04:43:38,807 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 04:43:38,815 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 04:43:38,817 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 04:43:38,821 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 04:43:38,821 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 04:43:38,822 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 04:43:38,823 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 04:43:38,824 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 04:43:38,825 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 04:43:38,826 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 04:43:38,832 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 04:43:38,835 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 04:43:38,836 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 04:43:38,838 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 04:43:38,838 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 04:43:38,839 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 04:43:38,840 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 04:43:38,840 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 04:43:38,842 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 04:43:38,843 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 04:43:38,844 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e0e3fa1-3f6f-4e5a-a4d0-fb9653a7b7c3/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-29 04:43:38,904 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 04:43:38,905 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 04:43:38,906 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 04:43:38,907 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 04:43:38,907 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 04:43:38,907 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 04:43:38,907 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 04:43:38,908 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 04:43:38,908 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 04:43:38,910 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 04:43:38,911 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 04:43:38,911 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 04:43:38,912 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 04:43:38,912 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 04:43:38,912 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 04:43:38,912 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 04:43:38,913 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 04:43:38,913 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-29 04:43:38,913 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-29 04:43:38,913 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 04:43:38,914 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 04:43:38,914 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 04:43:38,914 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 04:43:38,914 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 04:43:38,915 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-29 04:43:38,915 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 04:43:38,915 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 04:43:38,915 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 04:43:38,916 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 04:43:38,916 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 04:43:38,916 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-29 04:43:38,916 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-29 04:43:38,917 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 04:43:38,917 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 04:43:38,918 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 04:43:38,918 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_2e0e3fa1-3f6f-4e5a-a4d0-fb9653a7b7c3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e0e3fa1-3f6f-4e5a-a4d0-fb9653a7b7c3/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 16c784491c1bbafa07f396e2da5c8acc0901ffa28fc7d85f1b184d422e9c5e0e [2021-10-29 04:43:39,453 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 04:43:39,486 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 04:43:39,489 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 04:43:39,491 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 04:43:39,495 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 04:43:39,496 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e0e3fa1-3f6f-4e5a-a4d0-fb9653a7b7c3/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/float-newlib/float_req_bl_1121b.c [2021-10-29 04:43:39,597 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e0e3fa1-3f6f-4e5a-a4d0-fb9653a7b7c3/bin/utaipan-SDwSMHVbGG/data/6ae0269c5/836f1d9acf2a44d5b7b21bbee79d668f/FLAGe6ea1b92c [2021-10-29 04:43:40,354 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 04:43:40,354 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e0e3fa1-3f6f-4e5a-a4d0-fb9653a7b7c3/sv-benchmarks/c/float-newlib/float_req_bl_1121b.c [2021-10-29 04:43:40,367 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e0e3fa1-3f6f-4e5a-a4d0-fb9653a7b7c3/bin/utaipan-SDwSMHVbGG/data/6ae0269c5/836f1d9acf2a44d5b7b21bbee79d668f/FLAGe6ea1b92c [2021-10-29 04:43:40,675 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e0e3fa1-3f6f-4e5a-a4d0-fb9653a7b7c3/bin/utaipan-SDwSMHVbGG/data/6ae0269c5/836f1d9acf2a44d5b7b21bbee79d668f [2021-10-29 04:43:40,687 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 04:43:40,688 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 04:43:40,692 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 04:43:40,692 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 04:43:40,697 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 04:43:40,697 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:43:40" (1/1) ... [2021-10-29 04:43:40,699 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66c7e091 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:43:40, skipping insertion in model container [2021-10-29 04:43:40,699 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:43:40" (1/1) ... [2021-10-29 04:43:40,711 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 04:43:40,734 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 04:43:40,956 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_2e0e3fa1-3f6f-4e5a-a4d0-fb9653a7b7c3/sv-benchmarks/c/float-newlib/float_req_bl_1121b.c[2700,2713] [2021-10-29 04:43:40,960 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 04:43:40,974 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 04:43:41,106 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_2e0e3fa1-3f6f-4e5a-a4d0-fb9653a7b7c3/sv-benchmarks/c/float-newlib/float_req_bl_1121b.c[2700,2713] [2021-10-29 04:43:41,119 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 04:43:41,140 INFO L208 MainTranslator]: Completed translation [2021-10-29 04:43:41,141 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:43:41 WrapperNode [2021-10-29 04:43:41,141 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 04:43:41,142 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 04:43:41,143 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 04:43:41,143 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 04:43:41,152 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:43:41" (1/1) ... [2021-10-29 04:43:41,167 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:43:41" (1/1) ... [2021-10-29 04:43:41,200 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 04:43:41,201 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 04:43:41,201 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 04:43:41,201 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 04:43:41,212 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:43:41" (1/1) ... [2021-10-29 04:43:41,212 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:43:41" (1/1) ... [2021-10-29 04:43:41,219 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:43:41" (1/1) ... [2021-10-29 04:43:41,223 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:43:41" (1/1) ... [2021-10-29 04:43:41,245 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:43:41" (1/1) ... [2021-10-29 04:43:41,266 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:43:41" (1/1) ... [2021-10-29 04:43:41,269 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:43:41" (1/1) ... [2021-10-29 04:43:41,274 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 04:43:41,291 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 04:43:41,291 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 04:43:41,291 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 04:43:41,292 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:43:41" (1/1) ... [2021-10-29 04:43:41,300 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 04:43:41,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e0e3fa1-3f6f-4e5a-a4d0-fb9653a7b7c3/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 04:43:41,330 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e0e3fa1-3f6f-4e5a-a4d0-fb9653a7b7c3/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 04:43:41,347 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e0e3fa1-3f6f-4e5a-a4d0-fb9653a7b7c3/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 04:43:41,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4 [2021-10-29 04:43:41,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-29 04:43:41,392 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 04:43:41,392 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2021-10-29 04:43:41,393 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-29 04:43:41,393 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 04:43:41,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 04:43:41,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2021-10-29 04:43:41,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-29 04:43:41,395 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-29 04:43:44,122 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 04:43:44,123 INFO L299 CfgBuilder]: Removed 20 assume(true) statements. [2021-10-29 04:43:44,125 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:43:44 BoogieIcfgContainer [2021-10-29 04:43:44,126 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 04:43:44,128 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 04:43:44,128 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 04:43:44,132 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 04:43:44,133 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 04:43:40" (1/3) ... [2021-10-29 04:43:44,134 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ae9fe6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:43:44, skipping insertion in model container [2021-10-29 04:43:44,134 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:43:41" (2/3) ... [2021-10-29 04:43:44,135 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ae9fe6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:43:44, skipping insertion in model container [2021-10-29 04:43:44,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:43:44" (3/3) ... [2021-10-29 04:43:44,136 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1121b.c [2021-10-29 04:43:44,194 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 04:43:44,194 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-29 04:43:44,258 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 04:43:44,266 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 04:43:44,266 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-29 04:43:44,286 INFO L276 IsEmpty]: Start isEmpty. Operand has 42 states, 40 states have (on average 1.75) internal successors, (70), 41 states have internal predecessors, (70), 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 04:43:44,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-29 04:43:44,293 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:43:44,294 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:43:44,295 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:43:44,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:43:44,302 INFO L85 PathProgramCache]: Analyzing trace with hash 666555284, now seen corresponding path program 1 times [2021-10-29 04:43:44,318 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 04:43:44,319 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [476180787] [2021-10-29 04:43:44,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:43:44,320 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 04:43:44,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e0e3fa1-3f6f-4e5a-a4d0-fb9653a7b7c3/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 04:43:44,325 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e0e3fa1-3f6f-4e5a-a4d0-fb9653a7b7c3/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 04:43:44,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e0e3fa1-3f6f-4e5a-a4d0-fb9653a7b7c3/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-29 04:43:44,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:43:44,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-29 04:43:44,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:43:44,800 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 04:43:44,801 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:43:44,863 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 04:43:44,864 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 04:43:44,864 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [476180787] [2021-10-29 04:43:44,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [476180787] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 04:43:44,865 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:43:44,866 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-29 04:43:44,868 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758727040] [2021-10-29 04:43:44,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-29 04:43:44,874 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 04:43:44,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-29 04:43:44,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-29 04:43:44,893 INFO L87 Difference]: Start difference. First operand has 42 states, 40 states have (on average 1.75) internal successors, (70), 41 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:43:44,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:43:44,917 INFO L93 Difference]: Finished difference Result 82 states and 138 transitions. [2021-10-29 04:43:44,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-29 04:43:44,919 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-29 04:43:44,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:43:44,930 INFO L225 Difference]: With dead ends: 82 [2021-10-29 04:43:44,943 INFO L226 Difference]: Without dead ends: 39 [2021-10-29 04:43:44,946 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 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 04:43:44,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-10-29 04:43:44,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2021-10-29 04:43:44,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.4210526315789473) internal successors, (54), 38 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 04:43:44,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 54 transitions. [2021-10-29 04:43:45,001 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 54 transitions. Word has length 10 [2021-10-29 04:43:45,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:43:45,001 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 54 transitions. [2021-10-29 04:43:45,002 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:43:45,002 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 54 transitions. [2021-10-29 04:43:45,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-29 04:43:45,003 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:43:45,003 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:43:45,029 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e0e3fa1-3f6f-4e5a-a4d0-fb9653a7b7c3/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-29 04:43:45,222 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e0e3fa1-3f6f-4e5a-a4d0-fb9653a7b7c3/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 04:43:45,223 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:43:45,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:43:45,224 INFO L85 PathProgramCache]: Analyzing trace with hash 131116369, now seen corresponding path program 1 times [2021-10-29 04:43:45,226 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 04:43:45,226 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2065253967] [2021-10-29 04:43:45,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:43:45,227 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 04:43:45,227 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e0e3fa1-3f6f-4e5a-a4d0-fb9653a7b7c3/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 04:43:45,235 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e0e3fa1-3f6f-4e5a-a4d0-fb9653a7b7c3/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 04:43:45,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e0e3fa1-3f6f-4e5a-a4d0-fb9653a7b7c3/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-29 04:43:45,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:43:45,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-29 04:43:45,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:43:49,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:43:49,944 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:43:58,350 WARN L860 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_fmod_float_~x (_ FloatingPoint 8 24))) (not (let ((.cse0 (let ((.cse1 (fp.mul c_currentRoundingMode ULTIMATE.start_fmod_float_~x c_ULTIMATE.start_fmod_float_~y))) (fp.div c_currentRoundingMode .cse1 .cse1)))) (fp.eq .cse0 .cse0)))) is different from true [2021-10-29 04:44:18,195 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 04:44:18,195 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 04:44:18,196 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2065253967] [2021-10-29 04:44:18,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2065253967] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 04:44:18,196 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:44:18,196 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2021-10-29 04:44:18,197 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886748263] [2021-10-29 04:44:18,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-29 04:44:18,199 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 04:44:18,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-29 04:44:18,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=69, Unknown=1, NotChecked=16, Total=110 [2021-10-29 04:44:18,202 INFO L87 Difference]: Start difference. First operand 39 states and 54 transitions. Second operand has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 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 04:44:20,644 WARN L860 $PredicateComparison]: unable to prove that (and (forall ((ULTIMATE.start_fmod_float_~x (_ FloatingPoint 8 24))) (not (let ((.cse0 (let ((.cse1 (fp.mul c_currentRoundingMode ULTIMATE.start_fmod_float_~x c_ULTIMATE.start_fmod_float_~y))) (fp.div c_currentRoundingMode .cse1 .cse1)))) (fp.eq .cse0 .cse0)))) (= c_ULTIMATE.start_fmod_float_~y (fp.neg (_ +zero 8 24))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-10-29 04:44:25,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:44:25,415 INFO L93 Difference]: Finished difference Result 44 states and 58 transitions. [2021-10-29 04:44:25,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-29 04:44:25,416 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-29 04:44:25,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:44:25,418 INFO L225 Difference]: With dead ends: 44 [2021-10-29 04:44:25,418 INFO L226 Difference]: Without dead ends: 39 [2021-10-29 04:44:25,420 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 2 IntricatePredicates, 1 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 13.0s TimeCoverageRelationStatistics Valid=41, Invalid=97, Unknown=2, NotChecked=42, Total=182 [2021-10-29 04:44:25,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-10-29 04:44:25,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2021-10-29 04:44:25,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.394736842105263) internal successors, (53), 38 states have internal predecessors, (53), 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 04:44:25,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 53 transitions. [2021-10-29 04:44:25,432 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 53 transitions. Word has length 12 [2021-10-29 04:44:25,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:44:25,432 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 53 transitions. [2021-10-29 04:44:25,433 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 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 04:44:25,433 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 53 transitions. [2021-10-29 04:44:25,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-29 04:44:25,434 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:44:25,434 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:44:25,448 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e0e3fa1-3f6f-4e5a-a4d0-fb9653a7b7c3/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-29 04:44:25,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e0e3fa1-3f6f-4e5a-a4d0-fb9653a7b7c3/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 04:44:25,635 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:44:25,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:44:25,636 INFO L85 PathProgramCache]: Analyzing trace with hash -302456811, now seen corresponding path program 1 times [2021-10-29 04:44:25,637 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 04:44:25,638 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [996713223] [2021-10-29 04:44:25,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:44:25,638 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 04:44:25,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e0e3fa1-3f6f-4e5a-a4d0-fb9653a7b7c3/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 04:44:25,640 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e0e3fa1-3f6f-4e5a-a4d0-fb9653a7b7c3/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 04:44:25,645 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e0e3fa1-3f6f-4e5a-a4d0-fb9653a7b7c3/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-29 04:44:25,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:44:25,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-29 04:44:25,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:44:26,048 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 04:44:26,048 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:44:26,360 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 04:44:26,361 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 04:44:26,361 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [996713223] [2021-10-29 04:44:26,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [996713223] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 04:44:26,362 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:44:26,362 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-10-29 04:44:26,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970780602] [2021-10-29 04:44:26,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-29 04:44:26,363 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 04:44:26,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-29 04:44:26,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-29 04:44:26,365 INFO L87 Difference]: Start difference. First operand 39 states and 53 transitions. Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:44:26,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:44:26,513 INFO L93 Difference]: Finished difference Result 39 states and 53 transitions. [2021-10-29 04:44:26,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-29 04:44:26,514 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-29 04:44:26,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:44:26,514 INFO L225 Difference]: With dead ends: 39 [2021-10-29 04:44:26,514 INFO L226 Difference]: Without dead ends: 0 [2021-10-29 04:44:26,515 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-10-29 04:44:26,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-29 04:44:26,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-29 04:44:26,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:44:26,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-29 04:44:26,517 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2021-10-29 04:44:26,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:44:26,517 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-29 04:44:26,518 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:44:26,518 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-29 04:44:26,518 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-29 04:44:26,521 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 04:44:26,543 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e0e3fa1-3f6f-4e5a-a4d0-fb9653a7b7c3/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-29 04:44:26,722 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e0e3fa1-3f6f-4e5a-a4d0-fb9653a7b7c3/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 04:44:26,724 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-29 04:44:26,727 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:44:26,769 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:44:26,771 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:44:26,772 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:44:26,773 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:44:26,774 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:44:26,775 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:44:26,777 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:44:26,782 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:44:26,784 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:44:29,321 INFO L857 garLoopResultBuilder]: For program point L27(lines 27 31) no Hoare annotation was computed. [2021-10-29 04:44:29,321 INFO L857 garLoopResultBuilder]: For program point L60-1(lines 60 65) no Hoare annotation was computed. [2021-10-29 04:44:29,321 INFO L857 garLoopResultBuilder]: For program point L27-1(lines 19 107) no Hoare annotation was computed. [2021-10-29 04:44:29,322 INFO L857 garLoopResultBuilder]: For program point L27-2(lines 27 31) no Hoare annotation was computed. [2021-10-29 04:44:29,322 INFO L853 garLoopResultBuilder]: At program point L110(line 110) the Hoare annotation is: (and (not (fp.eq |ULTIMATE.start_fmod_float_#res| |ULTIMATE.start_fmod_float_#res|)) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|)) [2021-10-29 04:44:29,322 INFO L857 garLoopResultBuilder]: For program point L69(lines 69 75) no Hoare annotation was computed. [2021-10-29 04:44:29,322 INFO L857 garLoopResultBuilder]: For program point L36(lines 36 37) no Hoare annotation was computed. [2021-10-29 04:44:29,322 INFO L853 garLoopResultBuilder]: At program point L69-2(lines 67 76) the Hoare annotation is: false [2021-10-29 04:44:29,323 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-29 04:44:29,323 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-29 04:44:29,323 INFO L857 garLoopResultBuilder]: For program point L78(lines 78 80) no Hoare annotation was computed. [2021-10-29 04:44:29,323 INFO L857 garLoopResultBuilder]: For program point L78-2(lines 19 107) no Hoare annotation was computed. [2021-10-29 04:44:29,324 INFO L860 garLoopResultBuilder]: At program point L128(lines 112 129) the Hoare annotation is: true [2021-10-29 04:44:29,324 INFO L857 garLoopResultBuilder]: For program point L54-1(lines 19 107) no Hoare annotation was computed. [2021-10-29 04:44:29,324 INFO L857 garLoopResultBuilder]: For program point L38(lines 38 39) no Hoare annotation was computed. [2021-10-29 04:44:29,324 INFO L857 garLoopResultBuilder]: For program point L88(lines 88 105) no Hoare annotation was computed. [2021-10-29 04:44:29,324 INFO L857 garLoopResultBuilder]: For program point L22-1(lines 22 26) no Hoare annotation was computed. [2021-10-29 04:44:29,325 INFO L853 garLoopResultBuilder]: At program point L22-2(lines 22 26) the Hoare annotation is: (and (= ULTIMATE.start_fmod_float_~y (fp.neg (_ +zero 8 24))) (= currentRoundingMode roundNearestTiesToEven)) [2021-10-29 04:44:29,325 INFO L857 garLoopResultBuilder]: For program point L72(lines 72 73) no Hoare annotation was computed. [2021-10-29 04:44:29,325 INFO L857 garLoopResultBuilder]: For program point L48(lines 19 107) no Hoare annotation was computed. [2021-10-29 04:44:29,326 INFO L853 garLoopResultBuilder]: At program point L106(lines 19 107) the Hoare annotation is: (not (fp.eq |ULTIMATE.start_fmod_float_#res| |ULTIMATE.start_fmod_float_#res|)) [2021-10-29 04:44:29,326 INFO L857 garLoopResultBuilder]: For program point L40(lines 40 41) no Hoare annotation was computed. [2021-10-29 04:44:29,326 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-29 04:44:29,327 INFO L857 garLoopResultBuilder]: For program point L123(lines 123 126) no Hoare annotation was computed. [2021-10-29 04:44:29,327 INFO L857 garLoopResultBuilder]: For program point L90-1(lines 90 94) no Hoare annotation was computed. [2021-10-29 04:44:29,327 INFO L853 garLoopResultBuilder]: At program point L90-2(lines 90 94) the Hoare annotation is: false [2021-10-29 04:44:29,328 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 124) no Hoare annotation was computed. [2021-10-29 04:44:29,328 INFO L857 garLoopResultBuilder]: For program point L49-2(lines 49 50) no Hoare annotation was computed. [2021-10-29 04:44:29,328 INFO L853 garLoopResultBuilder]: At program point L49-3(lines 49 50) the Hoare annotation is: false [2021-10-29 04:44:29,328 INFO L857 garLoopResultBuilder]: For program point L99-1(lines 99 103) no Hoare annotation was computed. [2021-10-29 04:44:29,329 INFO L853 garLoopResultBuilder]: At program point L99-2(lines 99 103) the Hoare annotation is: false [2021-10-29 04:44:29,329 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-29 04:44:29,329 INFO L857 garLoopResultBuilder]: For program point L99-3(lines 99 103) no Hoare annotation was computed. [2021-10-29 04:44:29,329 INFO L857 garLoopResultBuilder]: For program point L124(line 124) no Hoare annotation was computed. [2021-10-29 04:44:29,330 INFO L857 garLoopResultBuilder]: For program point L42(lines 42 46) no Hoare annotation was computed. [2021-10-29 04:44:29,330 INFO L857 garLoopResultBuilder]: For program point L42-1(lines 19 107) no Hoare annotation was computed. [2021-10-29 04:44:29,330 INFO L857 garLoopResultBuilder]: For program point L67-1(lines 67 76) no Hoare annotation was computed. [2021-10-29 04:44:29,330 INFO L857 garLoopResultBuilder]: For program point L67-3(lines 67 76) no Hoare annotation was computed. [2021-10-29 04:44:29,331 INFO L853 garLoopResultBuilder]: At program point L84-2(lines 84 87) the Hoare annotation is: false [2021-10-29 04:44:29,331 INFO L857 garLoopResultBuilder]: For program point L84-3(lines 19 107) no Hoare annotation was computed. [2021-10-29 04:44:29,331 INFO L857 garLoopResultBuilder]: For program point L43-2(lines 43 44) no Hoare annotation was computed. [2021-10-29 04:44:29,332 INFO L853 garLoopResultBuilder]: At program point L43-3(lines 43 44) the Hoare annotation is: false [2021-10-29 04:44:29,336 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-10-29 04:44:29,338 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 04:44:29,353 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-29 04:44:29,356 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-29 04:44:29,357 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 04:44:29 BoogieIcfgContainer [2021-10-29 04:44:29,357 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 04:44:29,358 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 04:44:29,358 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 04:44:29,359 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 04:44:29,359 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:43:44" (3/4) ... [2021-10-29 04:44:29,364 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-29 04:44:29,381 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-10-29 04:44:29,381 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2021-10-29 04:44:29,381 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-29 04:44:29,382 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-29 04:44:29,434 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e0e3fa1-3f6f-4e5a-a4d0-fb9653a7b7c3/bin/utaipan-SDwSMHVbGG/witness.graphml [2021-10-29 04:44:29,435 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 04:44:29,437 INFO L168 Benchmark]: Toolchain (without parser) took 48747.43 ms. Allocated memory was 69.2 MB in the beginning and 90.2 MB in the end (delta: 21.0 MB). Free memory was 47.7 MB in the beginning and 46.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 23.3 MB. Max. memory is 16.1 GB. [2021-10-29 04:44:29,438 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 69.2 MB. Free memory is still 49.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 04:44:29,439 INFO L168 Benchmark]: CACSL2BoogieTranslator took 449.40 ms. Allocated memory is still 69.2 MB. Free memory was 47.4 MB in the beginning and 49.8 MB in the end (delta: -2.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-29 04:44:29,440 INFO L168 Benchmark]: Boogie Procedure Inliner took 57.83 ms. Allocated memory is still 69.2 MB. Free memory was 49.8 MB in the beginning and 47.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 04:44:29,441 INFO L168 Benchmark]: Boogie Preprocessor took 73.74 ms. Allocated memory is still 69.2 MB. Free memory was 47.9 MB in the beginning and 45.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 04:44:29,441 INFO L168 Benchmark]: RCFGBuilder took 2835.26 ms. Allocated memory is still 69.2 MB. Free memory was 45.8 MB in the beginning and 30.6 MB in the end (delta: 15.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-29 04:44:29,442 INFO L168 Benchmark]: TraceAbstraction took 45229.42 ms. Allocated memory was 69.2 MB in the beginning and 90.2 MB in the end (delta: 21.0 MB). Free memory was 30.0 MB in the beginning and 48.7 MB in the end (delta: -18.7 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. [2021-10-29 04:44:29,443 INFO L168 Benchmark]: Witness Printer took 76.94 ms. Allocated memory is still 90.2 MB. Free memory was 48.7 MB in the beginning and 46.0 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 04:44:29,447 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 69.2 MB. Free memory is still 49.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 449.40 ms. Allocated memory is still 69.2 MB. Free memory was 47.4 MB in the beginning and 49.8 MB in the end (delta: -2.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 57.83 ms. Allocated memory is still 69.2 MB. Free memory was 49.8 MB in the beginning and 47.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 73.74 ms. Allocated memory is still 69.2 MB. Free memory was 47.9 MB in the beginning and 45.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2835.26 ms. Allocated memory is still 69.2 MB. Free memory was 45.8 MB in the beginning and 30.6 MB in the end (delta: 15.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 45229.42 ms. Allocated memory was 69.2 MB in the beginning and 90.2 MB in the end (delta: 21.0 MB). Free memory was 30.0 MB in the beginning and 48.7 MB in the end (delta: -18.7 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. * Witness Printer took 76.94 ms. Allocated memory is still 90.2 MB. Free memory was 48.7 MB in the beginning and 46.0 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 124]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 42 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 45.0s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 7.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 2.5s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 112 SDtfs, 6 SDslu, 269 SDs, 0 SdLazy, 31 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 71 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 2 IntricatePredicates, 2 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 13.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred in iteration=0, InterpolantAutomatonStates: 14, 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 10 PreInvPairs, 14 NumberOfFragments, 27 HoareAnnotationTreeSize, 10 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 10 FomulaSimplificationsInter, 23 FormulaSimplificationTreeSizeReductionInter, 2.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 33.2s InterpolantComputationTime, 35 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 64 ConstructedInterpolants, 11 QuantifiedInterpolants, 368 SizeOfPredicates, 16 NumberOfNonLiveVariables, 188 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 110]: Loop Invariant Derived loop invariant: !~fp.eq~FLOAT(\result, \result) && 1bv32 == \result - InvariantResult [Line: 67]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 84]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 49]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 99]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 112]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 90]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 22]: Loop Invariant [2021-10-29 04:44:29,463 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-29 04:44:29,463 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: y == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven - InvariantResult [Line: 43]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: !~fp.eq~FLOAT(\result, \result) RESULT: Ultimate proved your program to be correct! [2021-10-29 04:44:29,585 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e0e3fa1-3f6f-4e5a-a4d0-fb9653a7b7c3/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...