./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1270a.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee578008-6598-49d9-b266-6264d106d7f3/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee578008-6598-49d9-b266-6264d106d7f3/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee578008-6598-49d9-b266-6264d106d7f3/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee578008-6598-49d9-b266-6264d106d7f3/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1270a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee578008-6598-49d9-b266-6264d106d7f3/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee578008-6598-49d9-b266-6264d106d7f3/bin/utaipan-gh47qXpMRh --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 cef5793fe43b7ac201f8ba74ab73acc606c8d546b5c039af9ee3552505a25b3c --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 11:17:15,995 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 11:17:15,996 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 11:17:16,009 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 11:17:16,009 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 11:17:16,010 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 11:17:16,011 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 11:17:16,012 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 11:17:16,013 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 11:17:16,013 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 11:17:16,014 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 11:17:16,014 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 11:17:16,015 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 11:17:16,015 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 11:17:16,016 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 11:17:16,017 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 11:17:16,017 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 11:17:16,018 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 11:17:16,019 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 11:17:16,020 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 11:17:16,021 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 11:17:16,022 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 11:17:16,022 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 11:17:16,023 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 11:17:16,025 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 11:17:16,025 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 11:17:16,025 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 11:17:16,026 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 11:17:16,026 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 11:17:16,027 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 11:17:16,027 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 11:17:16,027 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 11:17:16,028 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 11:17:16,029 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 11:17:16,029 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 11:17:16,029 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 11:17:16,030 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 11:17:16,030 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 11:17:16,030 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 11:17:16,031 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 11:17:16,031 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 11:17:16,032 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee578008-6598-49d9-b266-6264d106d7f3/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 11:17:16,046 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 11:17:16,046 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 11:17:16,046 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 11:17:16,046 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 11:17:16,046 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 11:17:16,047 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 11:17:16,047 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 11:17:16,047 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 11:17:16,047 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 11:17:16,047 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 11:17:16,047 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 11:17:16,047 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 11:17:16,047 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 11:17:16,047 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 11:17:16,047 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 11:17:16,048 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 11:17:16,048 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 11:17:16,048 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 11:17:16,048 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 11:17:16,048 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 11:17:16,048 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 11:17:16,049 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 11:17:16,049 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 11:17:16,049 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 11:17:16,049 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 11:17:16,049 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 11:17:16,049 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 11:17:16,049 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 11:17:16,049 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 11:17:16,049 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 11:17:16,050 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 11:17:16,050 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 11:17:16,050 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 11:17:16,050 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 11:17:16,050 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 11:17:16,050 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 11:17:16,050 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 11:17:16,050 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 11:17:16,050 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 11:17:16,050 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 11:17:16,051 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 11:17:16,051 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_ee578008-6598-49d9-b266-6264d106d7f3/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee578008-6598-49d9-b266-6264d106d7f3/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cef5793fe43b7ac201f8ba74ab73acc606c8d546b5c039af9ee3552505a25b3c [2022-12-14 11:17:16,211 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 11:17:16,228 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 11:17:16,230 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 11:17:16,231 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 11:17:16,231 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 11:17:16,232 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee578008-6598-49d9-b266-6264d106d7f3/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/float-newlib/float_req_bl_1270a.c [2022-12-14 11:17:18,776 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 11:17:18,937 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 11:17:18,938 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee578008-6598-49d9-b266-6264d106d7f3/sv-benchmarks/c/float-newlib/float_req_bl_1270a.c [2022-12-14 11:17:18,943 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee578008-6598-49d9-b266-6264d106d7f3/bin/utaipan-gh47qXpMRh/data/064a506de/19c3247cfc264e22af362757c1701823/FLAG479c03487 [2022-12-14 11:17:18,954 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee578008-6598-49d9-b266-6264d106d7f3/bin/utaipan-gh47qXpMRh/data/064a506de/19c3247cfc264e22af362757c1701823 [2022-12-14 11:17:18,956 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 11:17:18,957 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 11:17:18,958 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 11:17:18,958 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 11:17:18,960 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 11:17:18,961 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 11:17:18" (1/1) ... [2022-12-14 11:17:18,962 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b24af4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:17:18, skipping insertion in model container [2022-12-14 11:17:18,962 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 11:17:18" (1/1) ... [2022-12-14 11:17:18,967 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 11:17:18,986 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 11:17:19,130 WARN L237 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_ee578008-6598-49d9-b266-6264d106d7f3/sv-benchmarks/c/float-newlib/float_req_bl_1270a.c[4702,4715] [2022-12-14 11:17:19,133 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 11:17:19,140 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 11:17:19,170 WARN L237 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_ee578008-6598-49d9-b266-6264d106d7f3/sv-benchmarks/c/float-newlib/float_req_bl_1270a.c[4702,4715] [2022-12-14 11:17:19,170 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 11:17:19,181 INFO L208 MainTranslator]: Completed translation [2022-12-14 11:17:19,181 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:17:19 WrapperNode [2022-12-14 11:17:19,181 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 11:17:19,182 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 11:17:19,182 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 11:17:19,182 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 11:17:19,188 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:17:19" (1/1) ... [2022-12-14 11:17:19,195 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:17:19" (1/1) ... [2022-12-14 11:17:19,213 INFO L138 Inliner]: procedures = 18, calls = 75, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 254 [2022-12-14 11:17:19,213 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 11:17:19,213 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 11:17:19,214 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 11:17:19,214 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 11:17:19,221 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:17:19" (1/1) ... [2022-12-14 11:17:19,221 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:17:19" (1/1) ... [2022-12-14 11:17:19,224 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:17:19" (1/1) ... [2022-12-14 11:17:19,225 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:17:19" (1/1) ... [2022-12-14 11:17:19,232 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:17:19" (1/1) ... [2022-12-14 11:17:19,237 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:17:19" (1/1) ... [2022-12-14 11:17:19,238 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:17:19" (1/1) ... [2022-12-14 11:17:19,240 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:17:19" (1/1) ... [2022-12-14 11:17:19,242 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 11:17:19,242 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 11:17:19,243 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 11:17:19,243 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 11:17:19,243 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:17:19" (1/1) ... [2022-12-14 11:17:19,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 11:17:19,256 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee578008-6598-49d9-b266-6264d106d7f3/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:17:19,266 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee578008-6598-49d9-b266-6264d106d7f3/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 11:17:19,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee578008-6598-49d9-b266-6264d106d7f3/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 11:17:19,295 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 11:17:19,295 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 11:17:19,295 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 11:17:19,295 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2022-12-14 11:17:19,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 11:17:19,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2022-12-14 11:17:19,296 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 11:17:19,296 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 11:17:19,296 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 11:17:19,296 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 11:17:19,296 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_sqrtf [2022-12-14 11:17:19,296 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_sqrtf [2022-12-14 11:17:19,366 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 11:17:19,368 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 11:17:19,695 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 11:17:19,759 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 11:17:19,759 INFO L300 CfgBuilder]: Removed 34 assume(true) statements. [2022-12-14 11:17:19,761 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:17:19 BoogieIcfgContainer [2022-12-14 11:17:19,762 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 11:17:19,763 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 11:17:19,763 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 11:17:19,766 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 11:17:19,766 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 11:17:18" (1/3) ... [2022-12-14 11:17:19,767 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ea45b5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 11:17:19, skipping insertion in model container [2022-12-14 11:17:19,767 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:17:19" (2/3) ... [2022-12-14 11:17:19,767 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ea45b5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 11:17:19, skipping insertion in model container [2022-12-14 11:17:19,767 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:17:19" (3/3) ... [2022-12-14 11:17:19,768 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1270a.c [2022-12-14 11:17:19,782 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 11:17:19,783 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 11:17:19,818 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 11:17:19,822 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3dcea54a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 11:17:19,823 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 11:17:19,826 INFO L276 IsEmpty]: Start isEmpty. Operand has 72 states, 67 states have (on average 1.7164179104477613) internal successors, (115), 68 states have internal predecessors, (115), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 11:17:19,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-12-14 11:17:19,831 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:17:19,831 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:17:19,832 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:17:19,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:17:19,848 INFO L85 PathProgramCache]: Analyzing trace with hash 1867774098, now seen corresponding path program 1 times [2022-12-14 11:17:19,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:17:19,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587816581] [2022-12-14 11:17:19,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:17:19,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:17:19,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:17:19,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:17:19,965 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:17:19,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587816581] [2022-12-14 11:17:19,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587816581] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:17:19,966 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:17:19,966 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 11:17:19,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001962645] [2022-12-14 11:17:19,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:17:19,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 11:17:19,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:17:19,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 11:17:19,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 11:17:19,993 INFO L87 Difference]: Start difference. First operand has 72 states, 67 states have (on average 1.7164179104477613) internal successors, (115), 68 states have internal predecessors, (115), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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) [2022-12-14 11:17:20,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:17:20,042 INFO L93 Difference]: Finished difference Result 143 states and 239 transitions. [2022-12-14 11:17:20,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 11:17:20,045 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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 [2022-12-14 11:17:20,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:17:20,050 INFO L225 Difference]: With dead ends: 143 [2022-12-14 11:17:20,050 INFO L226 Difference]: Without dead ends: 70 [2022-12-14 11:17:20,053 INFO L412 NwaCegarLoop]: 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 [2022-12-14 11:17:20,055 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 11:17:20,056 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 76 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 11:17:20,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2022-12-14 11:17:20,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2022-12-14 11:17:20,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 66 states have (on average 1.2121212121212122) internal successors, (80), 66 states have internal predecessors, (80), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 11:17:20,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 84 transitions. [2022-12-14 11:17:20,083 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 84 transitions. Word has length 13 [2022-12-14 11:17:20,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:17:20,084 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 84 transitions. [2022-12-14 11:17:20,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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) [2022-12-14 11:17:20,084 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 84 transitions. [2022-12-14 11:17:20,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-12-14 11:17:20,084 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:17:20,085 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:17:20,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 11:17:20,085 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:17:20,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:17:20,086 INFO L85 PathProgramCache]: Analyzing trace with hash -573064207, now seen corresponding path program 1 times [2022-12-14 11:17:20,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:17:20,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725943501] [2022-12-14 11:17:20,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:17:20,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:17:20,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 11:17:20,140 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 11:17:20,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 11:17:20,192 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 11:17:20,192 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 11:17:20,194 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-12-14 11:17:20,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 11:17:20,197 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-12-14 11:17:20,200 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 11:17:20,216 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 11:17:20 BoogieIcfgContainer [2022-12-14 11:17:20,216 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 11:17:20,217 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 11:17:20,217 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 11:17:20,217 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 11:17:20,217 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:17:19" (3/4) ... [2022-12-14 11:17:20,219 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-14 11:17:20,220 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 11:17:20,220 INFO L158 Benchmark]: Toolchain (without parser) took 1263.37ms. Allocated memory is still 148.9MB. Free memory was 119.2MB in the beginning and 87.9MB in the end (delta: 31.3MB). Peak memory consumption was 31.6MB. Max. memory is 16.1GB. [2022-12-14 11:17:20,220 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 102.8MB. Free memory is still 60.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 11:17:20,221 INFO L158 Benchmark]: CACSL2BoogieTranslator took 223.91ms. Allocated memory is still 148.9MB. Free memory was 119.2MB in the beginning and 105.3MB in the end (delta: 13.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-12-14 11:17:20,221 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.14ms. Allocated memory is still 148.9MB. Free memory was 105.3MB in the beginning and 103.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 11:17:20,221 INFO L158 Benchmark]: Boogie Preprocessor took 28.48ms. Allocated memory is still 148.9MB. Free memory was 103.2MB in the beginning and 101.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 11:17:20,222 INFO L158 Benchmark]: RCFGBuilder took 519.15ms. Allocated memory is still 148.9MB. Free memory was 100.5MB in the beginning and 66.7MB in the end (delta: 33.8MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2022-12-14 11:17:20,222 INFO L158 Benchmark]: TraceAbstraction took 453.00ms. Allocated memory is still 148.9MB. Free memory was 66.1MB in the beginning and 88.7MB in the end (delta: -22.7MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 11:17:20,222 INFO L158 Benchmark]: Witness Printer took 2.87ms. Allocated memory is still 148.9MB. Free memory was 88.7MB in the beginning and 87.9MB in the end (delta: 831.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 11:17:20,224 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 102.8MB. Free memory is still 60.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 223.91ms. Allocated memory is still 148.9MB. Free memory was 119.2MB in the beginning and 105.3MB in the end (delta: 13.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.14ms. Allocated memory is still 148.9MB. Free memory was 105.3MB in the beginning and 103.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 28.48ms. Allocated memory is still 148.9MB. Free memory was 103.2MB in the beginning and 101.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 519.15ms. Allocated memory is still 148.9MB. Free memory was 100.5MB in the beginning and 66.7MB in the end (delta: 33.8MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * TraceAbstraction took 453.00ms. Allocated memory is still 148.9MB. Free memory was 66.1MB in the beginning and 88.7MB in the end (delta: -22.7MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 2.87ms. Allocated memory is still 148.9MB. Free memory was 88.7MB in the beginning and 87.9MB in the end (delta: 831.4kB). There was no memory consumed. Max. memory is 16.1GB. * 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: 236]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryArithmeticFLOAToperation at line 120, overapproximation of bitwiseAnd at line 220. Possible FailurePath: [L14] static const float one_sqrt = 1.0, tiny_sqrt = 1.0e-30; [L231] float x = 1.0f / 0.0f; [L232] float y = __VERIFIER_nondet_float(); [L233] CALL, EXPR __ieee754_hypotf(x, y) [L84] float a = x, b = y, t1, t2, y1, y2, w; [L85] __int32_t j, k, ha, hb; VAL [\old(x)=251658242, \old(y)=251658242, a=251658242, b=251658242, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=251658242, y=251658242] [L88] ieee_float_shape_type gf_u; [L89] gf_u.value = (x) [L90] EXPR gf_u.word [L90] (ha) = gf_u.word [L92] ha &= 0x7fffffffL VAL [\old(x)=251658242, \old(y)=251658242, a=251658242, b=251658242, ha=251658241, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=251658242, y=251658242] [L94] ieee_float_shape_type gf_u; [L95] gf_u.value = (y) [L96] EXPR gf_u.word [L96] (hb) = gf_u.word [L98] hb &= 0x7fffffffL [L99] COND FALSE !(hb > ha) [L106] a = x [L107] b = y VAL [\old(x)=251658242, \old(y)=251658242, a=251658242, b=251658242, ha=251658241, hb=0, j=0, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=251658242, y=251658242] [L110] ieee_float_shape_type sf_u; [L111] sf_u.word = (ha) [L112] EXPR sf_u.value [L112] (a) = sf_u.value [L115] ieee_float_shape_type sf_u; [L116] sf_u.word = (hb) [L117] EXPR sf_u.value [L117] (b) = sf_u.value [L119] COND TRUE (ha - hb) > 0xf000000L [L120] return a + b; VAL [\old(x)=251658242, \old(y)=251658242, a=251658244, b=251658245, ha=251658241, hb=0, j=0, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=251658242, y=251658242] [L233] RET, EXPR __ieee754_hypotf(x, y) [L233] float res = __ieee754_hypotf(x, y); [L235] CALL, EXPR isinf_float(res) [L214] __int32_t ix; VAL [\old(x)=251658243, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=251658243] [L216] ieee_float_shape_type gf_u; [L217] gf_u.value = (x) [L218] EXPR gf_u.word [L218] (ix) = gf_u.word [L220] ix &= 0x7fffffff [L221] return ((ix) == 0x7f800000L); [L235] RET, EXPR isinf_float(res) [L235] COND TRUE !isinf_float(res) [L236] reach_error() VAL [one_sqrt=1, res=251658243, tiny_sqrt=1/1000000000000000000000000000000, x=251658242, y=251658242] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 72 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 76 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 10 IncrementalHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 76 mSDtfsCounter, 10 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, 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=72occurred 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, 31 NumberOfCodeBlocks, 31 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 12 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 [2022-12-14 11:17:20,239 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee578008-6598-49d9-b266-6264d106d7f3/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee578008-6598-49d9-b266-6264d106d7f3/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee578008-6598-49d9-b266-6264d106d7f3/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee578008-6598-49d9-b266-6264d106d7f3/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee578008-6598-49d9-b266-6264d106d7f3/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1270a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee578008-6598-49d9-b266-6264d106d7f3/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee578008-6598-49d9-b266-6264d106d7f3/bin/utaipan-gh47qXpMRh --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 cef5793fe43b7ac201f8ba74ab73acc606c8d546b5c039af9ee3552505a25b3c --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 11:17:21,894 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 11:17:21,895 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 11:17:21,918 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 11:17:21,919 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 11:17:21,919 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 11:17:21,920 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 11:17:21,921 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 11:17:21,922 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 11:17:21,923 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 11:17:21,923 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 11:17:21,924 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 11:17:21,924 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 11:17:21,925 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 11:17:21,926 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 11:17:21,926 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 11:17:21,927 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 11:17:21,928 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 11:17:21,929 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 11:17:21,930 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 11:17:21,931 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 11:17:21,932 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 11:17:21,932 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 11:17:21,933 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 11:17:21,935 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 11:17:21,935 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 11:17:21,935 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 11:17:21,936 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 11:17:21,936 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 11:17:21,937 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 11:17:21,937 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 11:17:21,938 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 11:17:21,938 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 11:17:21,939 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 11:17:21,939 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 11:17:21,939 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 11:17:21,940 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 11:17:21,940 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 11:17:21,940 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 11:17:21,941 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 11:17:21,941 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 11:17:21,942 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee578008-6598-49d9-b266-6264d106d7f3/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2022-12-14 11:17:21,957 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 11:17:21,957 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 11:17:21,957 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 11:17:21,958 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 11:17:21,958 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 11:17:21,958 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 11:17:21,958 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 11:17:21,958 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 11:17:21,959 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 11:17:21,959 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 11:17:21,959 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 11:17:21,959 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 11:17:21,959 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 11:17:21,959 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 11:17:21,959 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 11:17:21,960 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 11:17:21,960 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 11:17:21,960 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 11:17:21,960 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 11:17:21,960 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 11:17:21,960 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-14 11:17:21,960 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-14 11:17:21,960 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 11:17:21,960 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 11:17:21,960 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 11:17:21,961 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 11:17:21,961 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 11:17:21,961 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-14 11:17:21,961 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 11:17:21,961 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 11:17:21,961 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 11:17:21,961 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 11:17:21,961 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 11:17:21,961 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-12-14 11:17:21,961 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-14 11:17:21,962 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 11:17:21,962 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 11:17:21,962 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-14 11:17:21,962 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_ee578008-6598-49d9-b266-6264d106d7f3/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee578008-6598-49d9-b266-6264d106d7f3/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cef5793fe43b7ac201f8ba74ab73acc606c8d546b5c039af9ee3552505a25b3c [2022-12-14 11:17:22,172 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 11:17:22,187 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 11:17:22,189 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 11:17:22,190 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 11:17:22,190 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 11:17:22,191 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee578008-6598-49d9-b266-6264d106d7f3/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/float-newlib/float_req_bl_1270a.c [2022-12-14 11:17:24,860 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 11:17:25,010 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 11:17:25,011 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee578008-6598-49d9-b266-6264d106d7f3/sv-benchmarks/c/float-newlib/float_req_bl_1270a.c [2022-12-14 11:17:25,019 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee578008-6598-49d9-b266-6264d106d7f3/bin/utaipan-gh47qXpMRh/data/a660d08e4/eb1c1a0065064f549f06ce8992d7e185/FLAGfac1b2b51 [2022-12-14 11:17:25,031 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee578008-6598-49d9-b266-6264d106d7f3/bin/utaipan-gh47qXpMRh/data/a660d08e4/eb1c1a0065064f549f06ce8992d7e185 [2022-12-14 11:17:25,033 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 11:17:25,034 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 11:17:25,035 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 11:17:25,035 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 11:17:25,038 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 11:17:25,038 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 11:17:25" (1/1) ... [2022-12-14 11:17:25,039 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5875cd10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:17:25, skipping insertion in model container [2022-12-14 11:17:25,039 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 11:17:25" (1/1) ... [2022-12-14 11:17:25,045 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 11:17:25,065 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 11:17:25,230 WARN L237 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_ee578008-6598-49d9-b266-6264d106d7f3/sv-benchmarks/c/float-newlib/float_req_bl_1270a.c[4702,4715] [2022-12-14 11:17:25,235 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 11:17:25,248 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 11:17:25,293 WARN L237 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_ee578008-6598-49d9-b266-6264d106d7f3/sv-benchmarks/c/float-newlib/float_req_bl_1270a.c[4702,4715] [2022-12-14 11:17:25,293 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 11:17:25,310 INFO L208 MainTranslator]: Completed translation [2022-12-14 11:17:25,310 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:17:25 WrapperNode [2022-12-14 11:17:25,311 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 11:17:25,312 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 11:17:25,312 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 11:17:25,318 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 11:17:25,326 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:17:25" (1/1) ... [2022-12-14 11:17:25,338 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:17:25" (1/1) ... [2022-12-14 11:17:25,362 INFO L138 Inliner]: procedures = 21, calls = 75, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 254 [2022-12-14 11:17:25,363 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 11:17:25,363 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 11:17:25,363 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 11:17:25,363 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 11:17:25,372 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:17:25" (1/1) ... [2022-12-14 11:17:25,373 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:17:25" (1/1) ... [2022-12-14 11:17:25,378 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:17:25" (1/1) ... [2022-12-14 11:17:25,378 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:17:25" (1/1) ... [2022-12-14 11:17:25,390 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:17:25" (1/1) ... [2022-12-14 11:17:25,397 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:17:25" (1/1) ... [2022-12-14 11:17:25,399 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:17:25" (1/1) ... [2022-12-14 11:17:25,401 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:17:25" (1/1) ... [2022-12-14 11:17:25,405 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 11:17:25,406 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 11:17:25,406 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 11:17:25,406 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 11:17:25,407 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:17:25" (1/1) ... [2022-12-14 11:17:25,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 11:17:25,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee578008-6598-49d9-b266-6264d106d7f3/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:17:25,431 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee578008-6598-49d9-b266-6264d106d7f3/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 11:17:25,433 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee578008-6598-49d9-b266-6264d106d7f3/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 11:17:25,470 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 11:17:25,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-12-14 11:17:25,471 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 11:17:25,471 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2022-12-14 11:17:25,471 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-12-14 11:17:25,471 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 11:17:25,471 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 11:17:25,471 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2022-12-14 11:17:25,471 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-12-14 11:17:25,471 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 11:17:25,471 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_sqrtf [2022-12-14 11:17:25,471 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_sqrtf [2022-12-14 11:17:25,548 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 11:17:25,550 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 11:17:28,092 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 11:17:28,096 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 11:17:28,096 INFO L300 CfgBuilder]: Removed 34 assume(true) statements. [2022-12-14 11:17:28,098 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:17:28 BoogieIcfgContainer [2022-12-14 11:17:28,098 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 11:17:28,099 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 11:17:28,100 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 11:17:28,102 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 11:17:28,102 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 11:17:25" (1/3) ... [2022-12-14 11:17:28,102 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@254b6af6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 11:17:28, skipping insertion in model container [2022-12-14 11:17:28,102 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:17:25" (2/3) ... [2022-12-14 11:17:28,103 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@254b6af6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 11:17:28, skipping insertion in model container [2022-12-14 11:17:28,103 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:17:28" (3/3) ... [2022-12-14 11:17:28,104 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1270a.c [2022-12-14 11:17:28,117 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 11:17:28,117 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 11:17:28,152 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 11:17:28,157 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@391470bb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 11:17:28,157 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 11:17:28,160 INFO L276 IsEmpty]: Start isEmpty. Operand has 89 states, 84 states have (on average 1.6904761904761905) internal successors, (142), 85 states have internal predecessors, (142), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 11:17:28,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-12-14 11:17:28,165 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:17:28,166 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:17:28,166 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:17:28,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:17:28,170 INFO L85 PathProgramCache]: Analyzing trace with hash -1724151004, now seen corresponding path program 1 times [2022-12-14 11:17:28,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 11:17:28,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1916905978] [2022-12-14 11:17:28,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:17:28,180 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 11:17:28,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee578008-6598-49d9-b266-6264d106d7f3/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 11:17:28,181 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee578008-6598-49d9-b266-6264d106d7f3/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 11:17:28,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee578008-6598-49d9-b266-6264d106d7f3/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-12-14 11:17:28,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:17:28,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 1 conjunts are in the unsatisfiable core [2022-12-14 11:17:28,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:17:28,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:17:28,389 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 11:17:28,390 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 11:17:28,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1916905978] [2022-12-14 11:17:28,390 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1916905978] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:17:28,390 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:17:28,391 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 11:17:28,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241100676] [2022-12-14 11:17:28,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:17:28,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 11:17:28,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 11:17:28,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 11:17:28,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 11:17:28,417 INFO L87 Difference]: Start difference. First operand has 89 states, 84 states have (on average 1.6904761904761905) internal successors, (142), 85 states have internal predecessors, (142), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 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) [2022-12-14 11:17:28,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:17:28,440 INFO L93 Difference]: Finished difference Result 176 states and 292 transitions. [2022-12-14 11:17:28,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 11:17:28,442 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 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 16 [2022-12-14 11:17:28,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:17:28,447 INFO L225 Difference]: With dead ends: 176 [2022-12-14 11:17:28,447 INFO L226 Difference]: Without dead ends: 86 [2022-12-14 11:17:28,449 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 11:17:28,452 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 11:17:28,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 11:17:28,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2022-12-14 11:17:28,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2022-12-14 11:17:28,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 82 states have (on average 1.2682926829268293) internal successors, (104), 82 states have internal predecessors, (104), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 11:17:28,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 108 transitions. [2022-12-14 11:17:28,482 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 108 transitions. Word has length 16 [2022-12-14 11:17:28,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:17:28,483 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 108 transitions. [2022-12-14 11:17:28,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 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) [2022-12-14 11:17:28,483 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 108 transitions. [2022-12-14 11:17:28,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-12-14 11:17:28,484 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:17:28,484 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:17:28,498 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee578008-6598-49d9-b266-6264d106d7f3/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-12-14 11:17:28,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee578008-6598-49d9-b266-6264d106d7f3/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 11:17:28,685 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:17:28,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:17:28,686 INFO L85 PathProgramCache]: Analyzing trace with hash -927967701, now seen corresponding path program 1 times [2022-12-14 11:17:28,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 11:17:28,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1858181742] [2022-12-14 11:17:28,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:17:28,686 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 11:17:28,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee578008-6598-49d9-b266-6264d106d7f3/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 11:17:28,687 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee578008-6598-49d9-b266-6264d106d7f3/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 11:17:28,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee578008-6598-49d9-b266-6264d106d7f3/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-12-14 11:17:28,798 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee578008-6598-49d9-b266-6264d106d7f3/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 139 [2022-12-14 11:17:28,800 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee578008-6598-49d9-b266-6264d106d7f3/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3) with exit command (exit)) Received EOF on stdin. No stderr output. at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.(TraceCheck.java:236) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheck.(InterpolatingTraceCheck.java:91) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:132) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee578008-6598-49d9-b266-6264d106d7f3/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3) with exit command (exit)) Received EOF on stdin. No stderr output. at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:243) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.AnnotateAndAsserter.buildAnnotatedSsaAndAssertTerms(AnnotateAndAsserter.java:130) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.checkTrace(TraceCheck.java:317) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.(TraceCheck.java:215) ... 30 more Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1465) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:658) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:239) ... 37 more [2022-12-14 11:17:28,803 INFO L158 Benchmark]: Toolchain (without parser) took 3768.66ms. Allocated memory is still 109.1MB. Free memory was 73.0MB in the beginning and 66.5MB in the end (delta: 6.5MB). Peak memory consumption was 7.4MB. Max. memory is 16.1GB. [2022-12-14 11:17:28,803 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 56.6MB. Free memory is still 34.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 11:17:28,804 INFO L158 Benchmark]: CACSL2BoogieTranslator took 275.93ms. Allocated memory is still 109.1MB. Free memory was 72.7MB in the beginning and 58.3MB in the end (delta: 14.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-14 11:17:28,804 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.96ms. Allocated memory is still 109.1MB. Free memory was 58.3MB in the beginning and 87.4MB in the end (delta: -29.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-14 11:17:28,805 INFO L158 Benchmark]: Boogie Preprocessor took 42.32ms. Allocated memory is still 109.1MB. Free memory was 87.4MB in the beginning and 84.8MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 11:17:28,805 INFO L158 Benchmark]: RCFGBuilder took 2691.91ms. Allocated memory is still 109.1MB. Free memory was 84.8MB in the beginning and 58.7MB in the end (delta: 26.1MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2022-12-14 11:17:28,806 INFO L158 Benchmark]: TraceAbstraction took 702.71ms. Allocated memory is still 109.1MB. Free memory was 58.0MB in the beginning and 66.5MB in the end (delta: -8.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 11:17:28,808 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 56.6MB. Free memory is still 34.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 275.93ms. Allocated memory is still 109.1MB. Free memory was 72.7MB in the beginning and 58.3MB in the end (delta: 14.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 50.96ms. Allocated memory is still 109.1MB. Free memory was 58.3MB in the beginning and 87.4MB in the end (delta: -29.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 42.32ms. Allocated memory is still 109.1MB. Free memory was 87.4MB in the beginning and 84.8MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 2691.91ms. Allocated memory is still 109.1MB. Free memory was 84.8MB in the beginning and 58.7MB in the end (delta: 26.1MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 702.71ms. Allocated memory is still 109.1MB. Free memory was 58.0MB in the beginning and 66.5MB in the end (delta: -8.5MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee578008-6598-49d9-b266-6264d106d7f3/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3) with exit command (exit)) Received EOF on stdin. No stderr output. de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee578008-6598-49d9-b266-6264d106d7f3/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3) with exit command (exit)) Received EOF on stdin. No stderr output.: de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.(TraceCheck.java:236) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-12-14 11:17:28,834 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee578008-6598-49d9-b266-6264d106d7f3/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee578008-6598-49d9-b266-6264d106d7f3/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3) with exit command (exit)) Received EOF on stdin. No stderr output.