./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cbmc-regression/float-to-double2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_785dca38-635a-4614-9631-e6574b0a68aa/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_785dca38-635a-4614-9631-e6574b0a68aa/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_785dca38-635a-4614-9631-e6574b0a68aa/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_785dca38-635a-4614-9631-e6574b0a68aa/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float-to-double2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_785dca38-635a-4614-9631-e6574b0a68aa/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_785dca38-635a-4614-9631-e6574b0a68aa/bin/utaipan-eEHZpOm5b7 --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 bafd616607c3b26e5c116d6e80df383a1448d022ecfba32980ae94deeb4f2706 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 19:24:38,958 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 19:24:38,960 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 19:24:39,008 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 19:24:39,009 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 19:24:39,010 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 19:24:39,012 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 19:24:39,015 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 19:24:39,018 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 19:24:39,019 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 19:24:39,021 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 19:24:39,022 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 19:24:39,023 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 19:24:39,024 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 19:24:39,026 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 19:24:39,028 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 19:24:39,029 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 19:24:39,030 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 19:24:39,032 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 19:24:39,035 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 19:24:39,037 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 19:24:39,039 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 19:24:39,041 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 19:24:39,042 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 19:24:39,046 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 19:24:39,047 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 19:24:39,047 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 19:24:39,049 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 19:24:39,049 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 19:24:39,051 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 19:24:39,051 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 19:24:39,052 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 19:24:39,053 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 19:24:39,054 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 19:24:39,055 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 19:24:39,056 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 19:24:39,057 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 19:24:39,057 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 19:24:39,057 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 19:24:39,059 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 19:24:39,060 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 19:24:39,061 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_785dca38-635a-4614-9631-e6574b0a68aa/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-25 19:24:39,089 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 19:24:39,093 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 19:24:39,095 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 19:24:39,095 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 19:24:39,102 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 19:24:39,102 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 19:24:39,102 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 19:24:39,102 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 19:24:39,103 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 19:24:39,103 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 19:24:39,104 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 19:24:39,104 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 19:24:39,105 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 19:24:39,105 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 19:24:39,105 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 19:24:39,105 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 19:24:39,106 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 19:24:39,106 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 19:24:39,107 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 19:24:39,107 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 19:24:39,107 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 19:24:39,107 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 19:24:39,108 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 19:24:39,108 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 19:24:39,108 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 19:24:39,108 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 19:24:39,110 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 19:24:39,110 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 19:24:39,110 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 19:24:39,111 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 19:24:39,111 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 19:24:39,111 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 19:24:39,112 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:24:39,112 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 19:24:39,112 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 19:24:39,112 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 19:24:39,113 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 19:24:39,113 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 19:24:39,113 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 19:24:39,113 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 19:24:39,113 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 19:24:39,114 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_785dca38-635a-4614-9631-e6574b0a68aa/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_785dca38-635a-4614-9631-e6574b0a68aa/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bafd616607c3b26e5c116d6e80df383a1448d022ecfba32980ae94deeb4f2706 [2021-11-25 19:24:39,406 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 19:24:39,425 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 19:24:39,428 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 19:24:39,429 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 19:24:39,429 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 19:24:39,431 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_785dca38-635a-4614-9631-e6574b0a68aa/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/floats-cbmc-regression/float-to-double2.c [2021-11-25 19:24:39,492 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_785dca38-635a-4614-9631-e6574b0a68aa/bin/utaipan-eEHZpOm5b7/data/e3bde0741/949c38e1e80d4a11af7e122fb71ca93d/FLAG39a254a85 [2021-11-25 19:24:39,880 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 19:24:39,880 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_785dca38-635a-4614-9631-e6574b0a68aa/sv-benchmarks/c/floats-cbmc-regression/float-to-double2.c [2021-11-25 19:24:39,886 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_785dca38-635a-4614-9631-e6574b0a68aa/bin/utaipan-eEHZpOm5b7/data/e3bde0741/949c38e1e80d4a11af7e122fb71ca93d/FLAG39a254a85 [2021-11-25 19:24:40,284 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_785dca38-635a-4614-9631-e6574b0a68aa/bin/utaipan-eEHZpOm5b7/data/e3bde0741/949c38e1e80d4a11af7e122fb71ca93d [2021-11-25 19:24:40,286 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 19:24:40,287 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 19:24:40,289 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 19:24:40,289 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 19:24:40,305 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 19:24:40,306 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:24:40" (1/1) ... [2021-11-25 19:24:40,307 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@382d92ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:24:40, skipping insertion in model container [2021-11-25 19:24:40,307 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:24:40" (1/1) ... [2021-11-25 19:24:40,314 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 19:24:40,324 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 19:24:40,515 WARN L230 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_785dca38-635a-4614-9631-e6574b0a68aa/sv-benchmarks/c/floats-cbmc-regression/float-to-double2.c[380,393] [2021-11-25 19:24:40,520 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:24:40,528 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 19:24:40,544 WARN L230 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_785dca38-635a-4614-9631-e6574b0a68aa/sv-benchmarks/c/floats-cbmc-regression/float-to-double2.c[380,393] [2021-11-25 19:24:40,545 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:24:40,556 INFO L208 MainTranslator]: Completed translation [2021-11-25 19:24:40,557 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:24:40 WrapperNode [2021-11-25 19:24:40,557 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 19:24:40,558 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 19:24:40,558 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 19:24:40,558 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 19:24:40,565 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:24:40" (1/1) ... [2021-11-25 19:24:40,571 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:24:40" (1/1) ... [2021-11-25 19:24:40,585 INFO L137 Inliner]: procedures = 11, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 18 [2021-11-25 19:24:40,585 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 19:24:40,586 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 19:24:40,586 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 19:24:40,586 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 19:24:40,594 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:24:40" (1/1) ... [2021-11-25 19:24:40,594 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:24:40" (1/1) ... [2021-11-25 19:24:40,595 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:24:40" (1/1) ... [2021-11-25 19:24:40,596 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:24:40" (1/1) ... [2021-11-25 19:24:40,599 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:24:40" (1/1) ... [2021-11-25 19:24:40,600 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:24:40" (1/1) ... [2021-11-25 19:24:40,601 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:24:40" (1/1) ... [2021-11-25 19:24:40,602 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 19:24:40,605 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 19:24:40,605 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 19:24:40,605 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 19:24:40,607 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:24:40" (1/1) ... [2021-11-25 19:24:40,614 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:24:40,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_785dca38-635a-4614-9631-e6574b0a68aa/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:24:40,633 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_785dca38-635a-4614-9631-e6574b0a68aa/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 19:24:40,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_785dca38-635a-4614-9631-e6574b0a68aa/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 19:24:40,674 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 19:24:40,675 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 19:24:40,675 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 19:24:40,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 19:24:40,732 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 19:24:40,734 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 19:24:40,800 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 19:24:40,811 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 19:24:40,811 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-25 19:24:40,813 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:24:40 BoogieIcfgContainer [2021-11-25 19:24:40,813 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 19:24:40,815 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 19:24:40,815 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 19:24:40,819 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 19:24:40,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 07:24:40" (1/3) ... [2021-11-25 19:24:40,820 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@efb817 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:24:40, skipping insertion in model container [2021-11-25 19:24:40,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:24:40" (2/3) ... [2021-11-25 19:24:40,820 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@efb817 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:24:40, skipping insertion in model container [2021-11-25 19:24:40,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:24:40" (3/3) ... [2021-11-25 19:24:40,822 INFO L111 eAbstractionObserver]: Analyzing ICFG float-to-double2.c [2021-11-25 19:24:40,827 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 19:24:40,828 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 19:24:40,877 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 19:24:40,885 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 19:24:40,885 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 19:24:40,898 INFO L276 IsEmpty]: Start isEmpty. Operand has 6 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:24:40,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-25 19:24:40,903 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:24:40,904 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-25 19:24:40,904 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:24:40,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:24:40,910 INFO L85 PathProgramCache]: Analyzing trace with hash 45328, now seen corresponding path program 1 times [2021-11-25 19:24:40,918 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:24:40,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46426990] [2021-11-25 19:24:40,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:24:40,920 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:24:40,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 19:24:40,989 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-25 19:24:40,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 19:24:41,015 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-25 19:24:41,017 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-25 19:24:41,018 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-25 19:24:41,020 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 19:24:41,024 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2021-11-25 19:24:41,027 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-25 19:24:41,043 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 07:24:41 BoogieIcfgContainer [2021-11-25 19:24:41,043 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-25 19:24:41,044 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-25 19:24:41,044 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-25 19:24:41,044 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-25 19:24:41,045 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:24:40" (3/4) ... [2021-11-25 19:24:41,048 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-25 19:24:41,048 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-25 19:24:41,049 INFO L158 Benchmark]: Toolchain (without parser) took 761.21ms. Allocated memory was 86.0MB in the beginning and 104.9MB in the end (delta: 18.9MB). Free memory was 48.9MB in the beginning and 57.7MB in the end (delta: -8.8MB). Peak memory consumption was 7.8MB. Max. memory is 16.1GB. [2021-11-25 19:24:41,050 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 86.0MB. Free memory was 65.5MB in the beginning and 65.4MB in the end (delta: 38.8kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 19:24:41,050 INFO L158 Benchmark]: CACSL2BoogieTranslator took 268.27ms. Allocated memory was 86.0MB in the beginning and 104.9MB in the end (delta: 18.9MB). Free memory was 48.7MB in the beginning and 81.1MB in the end (delta: -32.5MB). Peak memory consumption was 5.5MB. Max. memory is 16.1GB. [2021-11-25 19:24:41,051 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.45ms. Allocated memory is still 104.9MB. Free memory was 80.9MB in the beginning and 79.6MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 19:24:41,052 INFO L158 Benchmark]: Boogie Preprocessor took 16.49ms. Allocated memory is still 104.9MB. Free memory was 79.6MB in the beginning and 78.7MB in the end (delta: 909.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 19:24:41,052 INFO L158 Benchmark]: RCFGBuilder took 208.93ms. Allocated memory is still 104.9MB. Free memory was 78.7MB in the beginning and 70.4MB in the end (delta: 8.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-25 19:24:41,053 INFO L158 Benchmark]: TraceAbstraction took 227.94ms. Allocated memory is still 104.9MB. Free memory was 70.0MB in the beginning and 58.1MB in the end (delta: 12.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-25 19:24:41,054 INFO L158 Benchmark]: Witness Printer took 3.92ms. Allocated memory is still 104.9MB. Free memory was 58.1MB in the beginning and 57.7MB in the end (delta: 412.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 19:24:41,057 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 86.0MB. Free memory was 65.5MB in the beginning and 65.4MB in the end (delta: 38.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 268.27ms. Allocated memory was 86.0MB in the beginning and 104.9MB in the end (delta: 18.9MB). Free memory was 48.7MB in the beginning and 81.1MB in the end (delta: -32.5MB). Peak memory consumption was 5.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 27.45ms. Allocated memory is still 104.9MB. Free memory was 80.9MB in the beginning and 79.6MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 16.49ms. Allocated memory is still 104.9MB. Free memory was 79.6MB in the beginning and 78.7MB in the end (delta: 909.9kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 208.93ms. Allocated memory is still 104.9MB. Free memory was 78.7MB in the beginning and 70.4MB in the end (delta: 8.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 227.94ms. Allocated memory is still 104.9MB. Free memory was 70.0MB in the beginning and 58.1MB in the end (delta: 12.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Witness Printer took 3.92ms. Allocated memory is still 104.9MB. Free memory was 58.1MB in the beginning and 57.7MB in the end (delta: 412.0kB). 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: 11]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 11, overapproximation of someUnaryDOUBLEoperation at line 8, overapproximation of someUnaryFLOAToperation at line 7. Possible FailurePath: [L7] float f = -0x1.0p-127f; [L8] double d = -0x1.0p-127; [L9] double fp = (double)f; VAL [f=49, fp=49] [L11] COND TRUE !(d == fp) VAL [f=49, fp=49] [L11] reach_error() VAL [f=49, fp=49] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-25 19:24:41,097 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_785dca38-635a-4614-9631-e6574b0a68aa/bin/utaipan-eEHZpOm5b7/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/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_785dca38-635a-4614-9631-e6574b0a68aa/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_785dca38-635a-4614-9631-e6574b0a68aa/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_785dca38-635a-4614-9631-e6574b0a68aa/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_785dca38-635a-4614-9631-e6574b0a68aa/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float-to-double2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_785dca38-635a-4614-9631-e6574b0a68aa/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_785dca38-635a-4614-9631-e6574b0a68aa/bin/utaipan-eEHZpOm5b7 --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 bafd616607c3b26e5c116d6e80df383a1448d022ecfba32980ae94deeb4f2706 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 19:24:43,451 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 19:24:43,454 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 19:24:43,503 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 19:24:43,503 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 19:24:43,507 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 19:24:43,509 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 19:24:43,513 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 19:24:43,516 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 19:24:43,524 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 19:24:43,526 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 19:24:43,527 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 19:24:43,528 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 19:24:43,530 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 19:24:43,532 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 19:24:43,536 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 19:24:43,538 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 19:24:43,539 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 19:24:43,545 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 19:24:43,553 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 19:24:43,555 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 19:24:43,556 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 19:24:43,558 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 19:24:43,561 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 19:24:43,570 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 19:24:43,570 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 19:24:43,571 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 19:24:43,572 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 19:24:43,573 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 19:24:43,574 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 19:24:43,575 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 19:24:43,575 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 19:24:43,577 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 19:24:43,578 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 19:24:43,580 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 19:24:43,580 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 19:24:43,581 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 19:24:43,581 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 19:24:43,581 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 19:24:43,583 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 19:24:43,584 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 19:24:43,589 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_785dca38-635a-4614-9631-e6574b0a68aa/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-25 19:24:43,631 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 19:24:43,631 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 19:24:43,632 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 19:24:43,632 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 19:24:43,633 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 19:24:43,633 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 19:24:43,634 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 19:24:43,634 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 19:24:43,634 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 19:24:43,634 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 19:24:43,635 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 19:24:43,636 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 19:24:43,637 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 19:24:43,637 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 19:24:43,638 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 19:24:43,638 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 19:24:43,638 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 19:24:43,638 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 19:24:43,639 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 19:24:43,639 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-25 19:24:43,639 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-25 19:24:43,639 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-25 19:24:43,640 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 19:24:43,640 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 19:24:43,640 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 19:24:43,640 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 19:24:43,641 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 19:24:43,641 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-25 19:24:43,641 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 19:24:43,641 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:24:43,642 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 19:24:43,642 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 19:24:43,642 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 19:24:43,643 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-25 19:24:43,643 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-25 19:24:43,643 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 19:24:43,643 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 19:24:43,644 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 19:24:43,644 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_785dca38-635a-4614-9631-e6574b0a68aa/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_785dca38-635a-4614-9631-e6574b0a68aa/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bafd616607c3b26e5c116d6e80df383a1448d022ecfba32980ae94deeb4f2706 [2021-11-25 19:24:43,989 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 19:24:44,028 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 19:24:44,031 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 19:24:44,032 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 19:24:44,032 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 19:24:44,034 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_785dca38-635a-4614-9631-e6574b0a68aa/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/floats-cbmc-regression/float-to-double2.c [2021-11-25 19:24:44,103 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_785dca38-635a-4614-9631-e6574b0a68aa/bin/utaipan-eEHZpOm5b7/data/49896dc26/83a612939e124475bd29145034ca7430/FLAGef8653168 [2021-11-25 19:24:44,556 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 19:24:44,557 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_785dca38-635a-4614-9631-e6574b0a68aa/sv-benchmarks/c/floats-cbmc-regression/float-to-double2.c [2021-11-25 19:24:44,563 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_785dca38-635a-4614-9631-e6574b0a68aa/bin/utaipan-eEHZpOm5b7/data/49896dc26/83a612939e124475bd29145034ca7430/FLAGef8653168 [2021-11-25 19:24:45,062 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_785dca38-635a-4614-9631-e6574b0a68aa/bin/utaipan-eEHZpOm5b7/data/49896dc26/83a612939e124475bd29145034ca7430 [2021-11-25 19:24:45,065 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 19:24:45,066 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 19:24:45,068 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 19:24:45,068 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 19:24:45,072 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 19:24:45,072 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:24:45" (1/1) ... [2021-11-25 19:24:45,073 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61119190 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:24:45, skipping insertion in model container [2021-11-25 19:24:45,074 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:24:45" (1/1) ... [2021-11-25 19:24:45,080 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 19:24:45,092 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 19:24:45,247 WARN L230 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_785dca38-635a-4614-9631-e6574b0a68aa/sv-benchmarks/c/floats-cbmc-regression/float-to-double2.c[380,393] [2021-11-25 19:24:45,266 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:24:45,291 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 19:24:45,309 WARN L230 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_785dca38-635a-4614-9631-e6574b0a68aa/sv-benchmarks/c/floats-cbmc-regression/float-to-double2.c[380,393] [2021-11-25 19:24:45,310 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:24:45,324 INFO L208 MainTranslator]: Completed translation [2021-11-25 19:24:45,324 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:24:45 WrapperNode [2021-11-25 19:24:45,324 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 19:24:45,325 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 19:24:45,325 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 19:24:45,325 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 19:24:45,332 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:24:45" (1/1) ... [2021-11-25 19:24:45,338 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:24:45" (1/1) ... [2021-11-25 19:24:45,354 INFO L137 Inliner]: procedures = 12, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 19 [2021-11-25 19:24:45,354 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 19:24:45,355 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 19:24:45,355 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 19:24:45,355 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 19:24:45,363 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:24:45" (1/1) ... [2021-11-25 19:24:45,363 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:24:45" (1/1) ... [2021-11-25 19:24:45,365 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:24:45" (1/1) ... [2021-11-25 19:24:45,366 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:24:45" (1/1) ... [2021-11-25 19:24:45,371 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:24:45" (1/1) ... [2021-11-25 19:24:45,372 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:24:45" (1/1) ... [2021-11-25 19:24:45,374 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:24:45" (1/1) ... [2021-11-25 19:24:45,376 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 19:24:45,377 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 19:24:45,377 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 19:24:45,377 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 19:24:45,378 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:24:45" (1/1) ... [2021-11-25 19:24:45,385 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:24:45,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_785dca38-635a-4614-9631-e6574b0a68aa/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:24:45,409 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_785dca38-635a-4614-9631-e6574b0a68aa/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 19:24:45,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_785dca38-635a-4614-9631-e6574b0a68aa/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 19:24:45,446 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 19:24:45,446 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 19:24:45,446 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 19:24:45,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-25 19:24:45,510 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 19:24:45,511 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 19:24:45,654 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 19:24:45,659 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 19:24:45,660 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-25 19:24:45,662 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:24:45 BoogieIcfgContainer [2021-11-25 19:24:45,662 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 19:24:45,664 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 19:24:45,664 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 19:24:45,667 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 19:24:45,668 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 07:24:45" (1/3) ... [2021-11-25 19:24:45,669 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a9ca176 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:24:45, skipping insertion in model container [2021-11-25 19:24:45,669 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:24:45" (2/3) ... [2021-11-25 19:24:45,670 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a9ca176 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:24:45, skipping insertion in model container [2021-11-25 19:24:45,670 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:24:45" (3/3) ... [2021-11-25 19:24:45,672 INFO L111 eAbstractionObserver]: Analyzing ICFG float-to-double2.c [2021-11-25 19:24:45,680 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 19:24:45,680 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 19:24:45,737 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 19:24:45,749 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 19:24:45,749 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 19:24:45,766 INFO L276 IsEmpty]: Start isEmpty. Operand has 9 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:24:45,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-25 19:24:45,775 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:24:45,776 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-25 19:24:45,777 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:24:45,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:24:45,794 INFO L85 PathProgramCache]: Analyzing trace with hash 925604, now seen corresponding path program 1 times [2021-11-25 19:24:45,815 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:24:45,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1485158081] [2021-11-25 19:24:45,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:24:45,817 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:24:45,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_785dca38-635a-4614-9631-e6574b0a68aa/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:24:45,821 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_785dca38-635a-4614-9631-e6574b0a68aa/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:24:45,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_785dca38-635a-4614-9631-e6574b0a68aa/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-25 19:24:45,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:24:45,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-25 19:24:45,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:24:46,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:24:46,014 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:24:46,014 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:24:46,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1485158081] [2021-11-25 19:24:46,015 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1485158081] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:24:46,016 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:24:46,016 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:24:46,018 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058051971] [2021-11-25 19:24:46,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:24:46,022 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:24:46,023 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:24:46,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:24:46,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:24:46,058 INFO L87 Difference]: Start difference. First operand has 9 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:24:46,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:24:46,074 INFO L93 Difference]: Finished difference Result 13 states and 12 transitions. [2021-11-25 19:24:46,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:24:46,077 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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 4 [2021-11-25 19:24:46,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:24:46,083 INFO L225 Difference]: With dead ends: 13 [2021-11-25 19:24:46,083 INFO L226 Difference]: Without dead ends: 0 [2021-11-25 19:24:46,086 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:24:46,098 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 0 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:24:46,100 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 9 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 1 Unchecked, 0.0s Time] [2021-11-25 19:24:46,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-25 19:24:46,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-25 19:24:46,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:24:46,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-25 19:24:46,125 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 4 [2021-11-25 19:24:46,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:24:46,126 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-25 19:24:46,126 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:24:46,128 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-25 19:24:46,129 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-25 19:24:46,132 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-25 19:24:46,146 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_785dca38-635a-4614-9631-e6574b0a68aa/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-25 19:24:46,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_785dca38-635a-4614-9631-e6574b0a68aa/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:24:46,342 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-25 19:24:46,358 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-25 19:24:46,358 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-11-25 19:24:46,358 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-25 19:24:46,358 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-11-25 19:24:46,358 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 11) no Hoare annotation was computed. [2021-11-25 19:24:46,359 INFO L861 garLoopResultBuilder]: At program point L13(lines 5 14) the Hoare annotation is: true [2021-11-25 19:24:46,359 INFO L858 garLoopResultBuilder]: For program point L11(line 11) no Hoare annotation was computed. [2021-11-25 19:24:46,359 INFO L858 garLoopResultBuilder]: For program point L11-1(line 11) no Hoare annotation was computed. [2021-11-25 19:24:46,360 INFO L858 garLoopResultBuilder]: For program point L11-3(line 11) no Hoare annotation was computed. [2021-11-25 19:24:46,363 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2021-11-25 19:24:46,364 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-25 19:24:46,371 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 07:24:46 BoogieIcfgContainer [2021-11-25 19:24:46,371 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-25 19:24:46,372 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-25 19:24:46,372 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-25 19:24:46,372 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-25 19:24:46,373 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:24:45" (3/4) ... [2021-11-25 19:24:46,376 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-25 19:24:46,386 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2021-11-25 19:24:46,386 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-11-25 19:24:46,387 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-25 19:24:46,387 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-25 19:24:46,416 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_785dca38-635a-4614-9631-e6574b0a68aa/bin/utaipan-eEHZpOm5b7/witness.graphml [2021-11-25 19:24:46,416 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-25 19:24:46,417 INFO L158 Benchmark]: Toolchain (without parser) took 1350.50ms. Allocated memory was 62.9MB in the beginning and 88.1MB in the end (delta: 25.2MB). Free memory was 41.6MB in the beginning and 53.2MB in the end (delta: -11.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-25 19:24:46,418 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 62.9MB. Free memory is still 42.3MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 19:24:46,418 INFO L158 Benchmark]: CACSL2BoogieTranslator took 257.01ms. Allocated memory is still 62.9MB. Free memory was 41.4MB in the beginning and 44.1MB in the end (delta: -2.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-25 19:24:46,419 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.00ms. Allocated memory is still 62.9MB. Free memory was 43.9MB in the beginning and 42.6MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 19:24:46,419 INFO L158 Benchmark]: Boogie Preprocessor took 21.31ms. Allocated memory is still 62.9MB. Free memory was 42.5MB in the beginning and 41.4MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 19:24:46,420 INFO L158 Benchmark]: RCFGBuilder took 285.40ms. Allocated memory is still 62.9MB. Free memory was 41.4MB in the beginning and 33.9MB in the end (delta: 7.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-25 19:24:46,421 INFO L158 Benchmark]: TraceAbstraction took 707.65ms. Allocated memory was 62.9MB in the beginning and 88.1MB in the end (delta: 25.2MB). Free memory was 33.5MB in the beginning and 55.3MB in the end (delta: -21.8MB). Peak memory consumption was 5.8MB. Max. memory is 16.1GB. [2021-11-25 19:24:46,421 INFO L158 Benchmark]: Witness Printer took 44.25ms. Allocated memory is still 88.1MB. Free memory was 55.3MB in the beginning and 53.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 19:24:46,424 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 62.9MB. Free memory is still 42.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 257.01ms. Allocated memory is still 62.9MB. Free memory was 41.4MB in the beginning and 44.1MB in the end (delta: -2.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.00ms. Allocated memory is still 62.9MB. Free memory was 43.9MB in the beginning and 42.6MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 21.31ms. Allocated memory is still 62.9MB. Free memory was 42.5MB in the beginning and 41.4MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 285.40ms. Allocated memory is still 62.9MB. Free memory was 41.4MB in the beginning and 33.9MB in the end (delta: 7.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 707.65ms. Allocated memory was 62.9MB in the beginning and 88.1MB in the end (delta: 25.2MB). Free memory was 33.5MB in the beginning and 55.3MB in the end (delta: -21.8MB). Peak memory consumption was 5.8MB. Max. memory is 16.1GB. * Witness Printer took 44.25ms. Allocated memory is still 88.1MB. Free memory was 55.3MB in the beginning and 53.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. 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 - PositiveResult [Line: 11]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 9 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 1 IncrementalHoareTripleChecker+Unchecked, 4 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 5 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred in iteration=0, InterpolantAutomatonStates: 3, 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: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 2 NumberOfFragments, 1 HoareAnnotationTreeSize, 1 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 3 ConstructedInterpolants, 1 QuantifiedInterpolants, 18 SizeOfPredicates, 4 NumberOfNonLiveVariables, 20 ConjunctsInSsa, 4 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-11-25 19:24:46,479 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_785dca38-635a-4614-9631-e6574b0a68aa/bin/utaipan-eEHZpOm5b7/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 Writing output log to file Ultimate.log Result: TRUE