./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1091.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c76960b-6954-4261-9552-c6dc36501120/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c76960b-6954-4261-9552-c6dc36501120/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c76960b-6954-4261-9552-c6dc36501120/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c76960b-6954-4261-9552-c6dc36501120/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1091.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c76960b-6954-4261-9552-c6dc36501120/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c76960b-6954-4261-9552-c6dc36501120/bin/utaipan-UUZaoUuFF8 --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 7ead6fe7830da205228466fa2d47f2a018c45d096ed1f821ce96b27193830e65 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 02:14:22,314 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 02:14:22,317 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 02:14:22,358 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 02:14:22,359 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 02:14:22,364 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 02:14:22,368 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 02:14:22,374 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 02:14:22,377 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 02:14:22,384 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 02:14:22,386 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 02:14:22,388 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 02:14:22,389 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 02:14:22,393 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 02:14:22,395 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 02:14:22,398 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 02:14:22,401 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 02:14:22,402 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 02:14:22,408 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 02:14:22,418 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 02:14:22,421 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 02:14:22,423 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 02:14:22,427 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 02:14:22,429 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 02:14:22,440 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 02:14:22,441 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 02:14:22,442 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 02:14:22,444 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 02:14:22,445 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 02:14:22,447 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 02:14:22,448 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 02:14:22,449 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 02:14:22,452 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 02:14:22,454 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 02:14:22,457 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 02:14:22,457 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 02:14:22,458 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 02:14:22,459 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 02:14:22,459 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 02:14:22,461 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 02:14:22,462 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 02:14:22,463 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c76960b-6954-4261-9552-c6dc36501120/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 02:14:22,527 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 02:14:22,527 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 02:14:22,529 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 02:14:22,530 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 02:14:22,530 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 02:14:22,531 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 02:14:22,531 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 02:14:22,531 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 02:14:22,532 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 02:14:22,532 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 02:14:22,542 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 02:14:22,542 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 02:14:22,543 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 02:14:22,543 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 02:14:22,543 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 02:14:22,544 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 02:14:22,545 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 02:14:22,545 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 02:14:22,545 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 02:14:22,546 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 02:14:22,546 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 02:14:22,546 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 02:14:22,546 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 02:14:22,547 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 02:14:22,547 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 02:14:22,547 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 02:14:22,548 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 02:14:22,548 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 02:14:22,548 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 02:14:22,550 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 02:14:22,551 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:14:22,551 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 02:14:22,552 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 02:14:22,552 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 02:14:22,552 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 02:14:22,553 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 02:14:22,553 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 02:14:22,553 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 02:14:22,553 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 02:14:22,554 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_7c76960b-6954-4261-9552-c6dc36501120/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c76960b-6954-4261-9552-c6dc36501120/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7ead6fe7830da205228466fa2d47f2a018c45d096ed1f821ce96b27193830e65 [2021-11-07 02:14:22,931 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 02:14:22,981 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 02:14:22,984 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 02:14:22,986 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 02:14:22,987 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 02:14:22,988 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c76960b-6954-4261-9552-c6dc36501120/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/float-newlib/double_req_bl_1091.c [2021-11-07 02:14:23,074 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c76960b-6954-4261-9552-c6dc36501120/bin/utaipan-UUZaoUuFF8/data/804c2bdc1/4c8a4de9c1ae42639312f9262e3a0528/FLAG4d1a58cd3 [2021-11-07 02:14:23,676 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 02:14:23,677 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c76960b-6954-4261-9552-c6dc36501120/sv-benchmarks/c/float-newlib/double_req_bl_1091.c [2021-11-07 02:14:23,685 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c76960b-6954-4261-9552-c6dc36501120/bin/utaipan-UUZaoUuFF8/data/804c2bdc1/4c8a4de9c1ae42639312f9262e3a0528/FLAG4d1a58cd3 [2021-11-07 02:14:24,035 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c76960b-6954-4261-9552-c6dc36501120/bin/utaipan-UUZaoUuFF8/data/804c2bdc1/4c8a4de9c1ae42639312f9262e3a0528 [2021-11-07 02:14:24,039 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 02:14:24,041 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 02:14:24,043 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 02:14:24,043 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 02:14:24,047 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 02:14:24,049 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:14:24" (1/1) ... [2021-11-07 02:14:24,050 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@293be794 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:14:24, skipping insertion in model container [2021-11-07 02:14:24,051 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:14:24" (1/1) ... [2021-11-07 02:14:24,060 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 02:14:24,084 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:14:24,350 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c76960b-6954-4261-9552-c6dc36501120/sv-benchmarks/c/float-newlib/double_req_bl_1091.c[2108,2121] [2021-11-07 02:14:24,354 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:14:24,366 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 02:14:24,402 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c76960b-6954-4261-9552-c6dc36501120/sv-benchmarks/c/float-newlib/double_req_bl_1091.c[2108,2121] [2021-11-07 02:14:24,403 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:14:24,420 INFO L208 MainTranslator]: Completed translation [2021-11-07 02:14:24,420 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:14:24 WrapperNode [2021-11-07 02:14:24,421 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 02:14:24,422 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 02:14:24,422 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 02:14:24,422 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 02:14:24,431 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:14:24" (1/1) ... [2021-11-07 02:14:24,442 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:14:24" (1/1) ... [2021-11-07 02:14:24,475 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 02:14:24,476 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 02:14:24,476 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 02:14:24,477 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 02:14:24,488 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:14:24" (1/1) ... [2021-11-07 02:14:24,488 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:14:24" (1/1) ... [2021-11-07 02:14:24,492 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:14:24" (1/1) ... [2021-11-07 02:14:24,493 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:14:24" (1/1) ... [2021-11-07 02:14:24,504 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:14:24" (1/1) ... [2021-11-07 02:14:24,510 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:14:24" (1/1) ... [2021-11-07 02:14:24,521 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:14:24" (1/1) ... [2021-11-07 02:14:24,525 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 02:14:24,526 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 02:14:24,542 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 02:14:24,542 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 02:14:24,543 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:14:24" (1/1) ... [2021-11-07 02:14:24,553 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:14:24,577 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c76960b-6954-4261-9552-c6dc36501120/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:14:24,597 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c76960b-6954-4261-9552-c6dc36501120/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 02:14:24,613 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c76960b-6954-4261-9552-c6dc36501120/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 02:14:24,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 02:14:24,651 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 02:14:24,651 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-11-07 02:14:24,651 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 02:14:24,652 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-11-07 02:14:24,652 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 02:14:24,652 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 02:14:24,652 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 02:14:24,652 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 02:14:25,484 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 02:14:25,484 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-11-07 02:14:25,488 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:14:25 BoogieIcfgContainer [2021-11-07 02:14:25,488 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 02:14:25,490 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 02:14:25,491 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 02:14:25,495 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 02:14:25,496 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:14:24" (1/3) ... [2021-11-07 02:14:25,497 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7944e7af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:14:25, skipping insertion in model container [2021-11-07 02:14:25,498 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:14:24" (2/3) ... [2021-11-07 02:14:25,498 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7944e7af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:14:25, skipping insertion in model container [2021-11-07 02:14:25,498 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:14:25" (3/3) ... [2021-11-07 02:14:25,500 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1091.c [2021-11-07 02:14:25,508 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 02:14:25,508 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-07 02:14:25,572 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 02:14:25,580 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 [2021-11-07 02:14:25,581 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-07 02:14:25,601 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 16 states have (on average 1.6875) internal successors, (27), 17 states have internal predecessors, (27), 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) [2021-11-07 02:14:25,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-07 02:14:25,624 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:14:25,625 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:14:25,626 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:14:25,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:14:25,635 INFO L85 PathProgramCache]: Analyzing trace with hash -1181666889, now seen corresponding path program 1 times [2021-11-07 02:14:25,648 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 02:14:25,650 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867062957] [2021-11-07 02:14:25,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:14:25,652 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 02:14:25,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:14:25,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:14:25,820 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 02:14:25,821 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867062957] [2021-11-07 02:14:25,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867062957] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 02:14:25,851 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:14:25,851 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 02:14:25,853 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259007575] [2021-11-07 02:14:25,859 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 02:14:25,860 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 02:14:25,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 02:14:25,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 02:14:25,881 INFO L87 Difference]: Start difference. First operand has 18 states, 16 states have (on average 1.6875) internal successors, (27), 17 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:14:25,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:14:25,903 INFO L93 Difference]: Finished difference Result 35 states and 53 transitions. [2021-11-07 02:14:25,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 02:14:25,905 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-07 02:14:25,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:14:25,916 INFO L225 Difference]: With dead ends: 35 [2021-11-07 02:14:25,916 INFO L226 Difference]: Without dead ends: 16 [2021-11-07 02:14:25,920 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 02:14:25,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-11-07 02:14:25,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-11-07 02:14:25,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:14:25,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 20 transitions. [2021-11-07 02:14:25,960 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 20 transitions. Word has length 8 [2021-11-07 02:14:25,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:14:25,961 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 20 transitions. [2021-11-07 02:14:25,961 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:14:25,962 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 20 transitions. [2021-11-07 02:14:25,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-07 02:14:25,963 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:14:25,963 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:14:25,963 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 02:14:25,964 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:14:25,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:14:25,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1211032174, now seen corresponding path program 1 times [2021-11-07 02:14:25,965 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 02:14:25,965 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000070569] [2021-11-07 02:14:25,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:14:25,966 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 02:14:26,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 02:14:26,041 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 02:14:26,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 02:14:26,117 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-07 02:14:26,117 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-11-07 02:14:26,119 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 02:14:26,122 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 02:14:26,126 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-07 02:14:26,130 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-07 02:14:26,161 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 02:14:26 BoogieIcfgContainer [2021-11-07 02:14:26,161 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-07 02:14:26,162 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-07 02:14:26,163 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-07 02:14:26,163 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-07 02:14:26,164 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:14:25" (3/4) ... [2021-11-07 02:14:26,168 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-07 02:14:26,168 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-07 02:14:26,171 INFO L168 Benchmark]: Toolchain (without parser) took 2128.80 ms. Allocated memory is still 100.7 MB. Free memory was 59.3 MB in the beginning and 64.7 MB in the end (delta: -5.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 02:14:26,172 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 100.7 MB. Free memory was 76.5 MB in the beginning and 76.4 MB in the end (delta: 56.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 02:14:26,173 INFO L168 Benchmark]: CACSL2BoogieTranslator took 378.08 ms. Allocated memory is still 100.7 MB. Free memory was 59.1 MB in the beginning and 75.3 MB in the end (delta: -16.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-07 02:14:26,174 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.81 ms. Allocated memory is still 100.7 MB. Free memory was 75.0 MB in the beginning and 73.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 02:14:26,174 INFO L168 Benchmark]: Boogie Preprocessor took 49.04 ms. Allocated memory is still 100.7 MB. Free memory was 73.3 MB in the beginning and 72.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 02:14:26,175 INFO L168 Benchmark]: RCFGBuilder took 962.11 ms. Allocated memory is still 100.7 MB. Free memory was 72.0 MB in the beginning and 51.0 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2021-11-07 02:14:26,176 INFO L168 Benchmark]: TraceAbstraction took 671.35 ms. Allocated memory is still 100.7 MB. Free memory was 50.5 MB in the beginning and 65.4 MB in the end (delta: -15.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 02:14:26,177 INFO L168 Benchmark]: Witness Printer took 5.97 ms. Allocated memory is still 100.7 MB. Free memory was 65.2 MB in the beginning and 64.7 MB in the end (delta: 451.9 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 02:14:26,181 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 100.7 MB. Free memory was 76.5 MB in the beginning and 76.4 MB in the end (delta: 56.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 378.08 ms. Allocated memory is still 100.7 MB. Free memory was 59.1 MB in the beginning and 75.3 MB in the end (delta: -16.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 53.81 ms. Allocated memory is still 100.7 MB. Free memory was 75.0 MB in the beginning and 73.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 49.04 ms. Allocated memory is still 100.7 MB. Free memory was 73.3 MB in the beginning and 72.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 962.11 ms. Allocated memory is still 100.7 MB. Free memory was 72.0 MB in the beginning and 51.0 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 671.35 ms. Allocated memory is still 100.7 MB. Free memory was 50.5 MB in the beginning and 65.4 MB in the end (delta: -15.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 5.97 ms. Allocated memory is still 100.7 MB. Free memory was 65.2 MB in the beginning and 64.7 MB in the end (delta: 451.9 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 97]: 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 17, overapproximation of someBinaryArithmeticDOUBLEoperation at line 55, overapproximation of bitwiseAnd at line 30. Possible FailurePath: [L19] static const double huge_ceil = 1.0e300; [L92] double x = 0.0 / 0.0; [L22] __int32_t i0, i1, j0; [L23] __uint32_t i, j; VAL [huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L25] ieee_double_shape_type ew_u; [L26] ew_u.value = (x) [L27] EXPR ew_u.parts.msw [L27] (i0) = ew_u.parts.msw [L28] EXPR ew_u.parts.lsw [L28] (i1) = ew_u.parts.lsw [L30] j0 = ((i0 >> 20) & 0x7ff) - 0x3ff VAL [huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L31] COND FALSE !(j0 < 20) VAL [huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L53] COND TRUE j0 > 51 [L54] COND FALSE !(j0 == 0x400) [L57] return x; VAL [huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L93] double res = ceil_double(x); [L17] return x != x; [L96] COND TRUE !isnan_double(res) [L97] reach_error() VAL [huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 22 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred 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, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 7 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-07 02:14:26,245 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c76960b-6954-4261-9552-c6dc36501120/bin/utaipan-UUZaoUuFF8/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_7c76960b-6954-4261-9552-c6dc36501120/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c76960b-6954-4261-9552-c6dc36501120/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c76960b-6954-4261-9552-c6dc36501120/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c76960b-6954-4261-9552-c6dc36501120/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1091.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c76960b-6954-4261-9552-c6dc36501120/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c76960b-6954-4261-9552-c6dc36501120/bin/utaipan-UUZaoUuFF8 --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 7ead6fe7830da205228466fa2d47f2a018c45d096ed1f821ce96b27193830e65 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 02:14:29,350 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 02:14:29,354 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 02:14:29,425 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 02:14:29,426 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 02:14:29,433 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 02:14:29,435 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 02:14:29,441 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 02:14:29,445 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 02:14:29,448 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 02:14:29,450 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 02:14:29,451 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 02:14:29,452 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 02:14:29,453 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 02:14:29,455 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 02:14:29,457 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 02:14:29,458 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 02:14:29,459 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 02:14:29,461 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 02:14:29,475 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 02:14:29,478 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 02:14:29,480 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 02:14:29,483 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 02:14:29,487 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 02:14:29,495 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 02:14:29,495 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 02:14:29,496 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 02:14:29,497 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 02:14:29,498 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 02:14:29,499 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 02:14:29,500 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 02:14:29,501 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 02:14:29,502 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 02:14:29,504 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 02:14:29,506 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 02:14:29,506 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 02:14:29,507 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 02:14:29,508 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 02:14:29,508 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 02:14:29,510 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 02:14:29,512 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 02:14:29,513 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c76960b-6954-4261-9552-c6dc36501120/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-07 02:14:29,569 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 02:14:29,569 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 02:14:29,571 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 02:14:29,571 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 02:14:29,571 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 02:14:29,572 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 02:14:29,572 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 02:14:29,572 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 02:14:29,572 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 02:14:29,574 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 02:14:29,576 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 02:14:29,576 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 02:14:29,576 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 02:14:29,576 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 02:14:29,577 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 02:14:29,577 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 02:14:29,577 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 02:14:29,577 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 02:14:29,578 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 02:14:29,578 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 02:14:29,578 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 02:14:29,578 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 02:14:29,579 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 02:14:29,579 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 02:14:29,579 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 02:14:29,580 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 02:14:29,580 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:14:29,580 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 02:14:29,580 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 02:14:29,581 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 02:14:29,581 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 02:14:29,582 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 02:14:29,582 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 02:14:29,582 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 02:14:29,583 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 02:14:29,583 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_7c76960b-6954-4261-9552-c6dc36501120/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c76960b-6954-4261-9552-c6dc36501120/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7ead6fe7830da205228466fa2d47f2a018c45d096ed1f821ce96b27193830e65 [2021-11-07 02:14:30,095 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 02:14:30,144 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 02:14:30,148 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 02:14:30,150 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 02:14:30,151 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 02:14:30,152 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c76960b-6954-4261-9552-c6dc36501120/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/float-newlib/double_req_bl_1091.c [2021-11-07 02:14:30,260 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c76960b-6954-4261-9552-c6dc36501120/bin/utaipan-UUZaoUuFF8/data/00d9deda8/6d264f32f2004f5e9ab27894599110c5/FLAGad540ffad [2021-11-07 02:14:30,918 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 02:14:30,919 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c76960b-6954-4261-9552-c6dc36501120/sv-benchmarks/c/float-newlib/double_req_bl_1091.c [2021-11-07 02:14:30,929 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c76960b-6954-4261-9552-c6dc36501120/bin/utaipan-UUZaoUuFF8/data/00d9deda8/6d264f32f2004f5e9ab27894599110c5/FLAGad540ffad [2021-11-07 02:14:31,236 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c76960b-6954-4261-9552-c6dc36501120/bin/utaipan-UUZaoUuFF8/data/00d9deda8/6d264f32f2004f5e9ab27894599110c5 [2021-11-07 02:14:31,239 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 02:14:31,241 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 02:14:31,253 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 02:14:31,253 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 02:14:31,258 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 02:14:31,260 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:14:31" (1/1) ... [2021-11-07 02:14:31,261 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d27bbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:14:31, skipping insertion in model container [2021-11-07 02:14:31,264 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:14:31" (1/1) ... [2021-11-07 02:14:31,288 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 02:14:31,317 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:14:31,547 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c76960b-6954-4261-9552-c6dc36501120/sv-benchmarks/c/float-newlib/double_req_bl_1091.c[2108,2121] [2021-11-07 02:14:31,551 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:14:31,569 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 02:14:31,605 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c76960b-6954-4261-9552-c6dc36501120/sv-benchmarks/c/float-newlib/double_req_bl_1091.c[2108,2121] [2021-11-07 02:14:31,606 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:14:31,628 INFO L208 MainTranslator]: Completed translation [2021-11-07 02:14:31,629 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:14:31 WrapperNode [2021-11-07 02:14:31,629 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 02:14:31,631 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 02:14:31,631 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 02:14:31,631 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 02:14:31,640 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:14:31" (1/1) ... [2021-11-07 02:14:31,654 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:14:31" (1/1) ... [2021-11-07 02:14:31,681 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 02:14:31,682 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 02:14:31,683 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 02:14:31,683 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 02:14:31,693 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:14:31" (1/1) ... [2021-11-07 02:14:31,694 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:14:31" (1/1) ... [2021-11-07 02:14:31,699 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:14:31" (1/1) ... [2021-11-07 02:14:31,700 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:14:31" (1/1) ... [2021-11-07 02:14:31,712 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:14:31" (1/1) ... [2021-11-07 02:14:31,718 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:14:31" (1/1) ... [2021-11-07 02:14:31,721 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:14:31" (1/1) ... [2021-11-07 02:14:31,726 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 02:14:31,727 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 02:14:31,728 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 02:14:31,728 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 02:14:31,729 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:14:31" (1/1) ... [2021-11-07 02:14:31,738 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:14:31,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c76960b-6954-4261-9552-c6dc36501120/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:14:31,768 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c76960b-6954-4261-9552-c6dc36501120/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 02:14:31,789 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c76960b-6954-4261-9552-c6dc36501120/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 02:14:31,829 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2021-11-07 02:14:31,830 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2021-11-07 02:14:31,830 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 02:14:31,830 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 02:14:31,831 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 02:14:31,831 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 02:14:31,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 02:14:31,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 02:14:31,832 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 02:14:34,278 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 02:14:34,279 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-11-07 02:14:34,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:14:34 BoogieIcfgContainer [2021-11-07 02:14:34,282 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 02:14:34,284 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 02:14:34,284 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 02:14:34,288 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 02:14:34,289 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:14:31" (1/3) ... [2021-11-07 02:14:34,290 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45a56009 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:14:34, skipping insertion in model container [2021-11-07 02:14:34,290 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:14:31" (2/3) ... [2021-11-07 02:14:34,291 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45a56009 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:14:34, skipping insertion in model container [2021-11-07 02:14:34,291 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:14:34" (3/3) ... [2021-11-07 02:14:34,293 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1091.c [2021-11-07 02:14:34,300 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 02:14:34,301 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-07 02:14:34,358 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 02:14:34,366 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 [2021-11-07 02:14:34,367 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-07 02:14:34,392 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 32 states have (on average 1.65625) internal successors, (53), 33 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:14:34,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-07 02:14:34,409 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:14:34,410 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:14:34,411 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:14:34,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:14:34,426 INFO L85 PathProgramCache]: Analyzing trace with hash -1930047821, now seen corresponding path program 1 times [2021-11-07 02:14:34,441 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:14:34,442 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [851731442] [2021-11-07 02:14:34,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:14:34,444 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:14:34,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c76960b-6954-4261-9552-c6dc36501120/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:14:34,450 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c76960b-6954-4261-9552-c6dc36501120/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:14:34,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c76960b-6954-4261-9552-c6dc36501120/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 02:14:34,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:14:34,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 02:14:34,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:14:34,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:14:34,738 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:14:34,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:14:34,804 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:14:34,804 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [851731442] [2021-11-07 02:14:34,805 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [851731442] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:14:34,805 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:14:34,806 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 02:14:34,808 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731004427] [2021-11-07 02:14:34,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 02:14:34,814 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:14:34,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 02:14:34,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 02:14:34,834 INFO L87 Difference]: Start difference. First operand has 34 states, 32 states have (on average 1.65625) internal successors, (53), 33 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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) [2021-11-07 02:14:34,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:14:34,856 INFO L93 Difference]: Finished difference Result 66 states and 104 transitions. [2021-11-07 02:14:34,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 02:14:34,857 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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 11 [2021-11-07 02:14:34,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:14:34,869 INFO L225 Difference]: With dead ends: 66 [2021-11-07 02:14:34,869 INFO L226 Difference]: Without dead ends: 31 [2021-11-07 02:14:34,872 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 02:14:34,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-11-07 02:14:34,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2021-11-07 02:14:34,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.5) internal successors, (45), 30 states have internal predecessors, (45), 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) [2021-11-07 02:14:34,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 45 transitions. [2021-11-07 02:14:34,916 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 45 transitions. Word has length 11 [2021-11-07 02:14:34,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:14:34,917 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 45 transitions. [2021-11-07 02:14:34,917 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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) [2021-11-07 02:14:34,917 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 45 transitions. [2021-11-07 02:14:34,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-07 02:14:34,919 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:14:34,919 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:14:34,942 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c76960b-6954-4261-9552-c6dc36501120/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 02:14:35,136 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c76960b-6954-4261-9552-c6dc36501120/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:14:35,136 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:14:35,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:14:35,138 INFO L85 PathProgramCache]: Analyzing trace with hash -1310126896, now seen corresponding path program 1 times [2021-11-07 02:14:35,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:14:35,139 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2093531024] [2021-11-07 02:14:35,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:14:35,139 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:14:35,140 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c76960b-6954-4261-9552-c6dc36501120/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:14:35,142 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c76960b-6954-4261-9552-c6dc36501120/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:14:35,173 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c76960b-6954-4261-9552-c6dc36501120/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 02:14:35,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:14:35,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-07 02:14:35,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:14:35,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:14:35,670 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:14:35,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:14:35,989 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:14:35,989 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2093531024] [2021-11-07 02:14:35,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2093531024] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:14:35,990 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:14:35,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-11-07 02:14:35,990 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495969891] [2021-11-07 02:14:35,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 02:14:35,992 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:14:35,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 02:14:35,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-11-07 02:14:35,994 INFO L87 Difference]: Start difference. First operand 31 states and 45 transitions. Second operand has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 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) [2021-11-07 02:14:37,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:14:37,575 INFO L93 Difference]: Finished difference Result 42 states and 55 transitions. [2021-11-07 02:14:37,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 02:14:37,576 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-07 02:14:37,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:14:37,577 INFO L225 Difference]: With dead ends: 42 [2021-11-07 02:14:37,577 INFO L226 Difference]: Without dead ends: 21 [2021-11-07 02:14:37,579 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2021-11-07 02:14:37,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-11-07 02:14:37,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2021-11-07 02:14:37,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.1) internal successors, (22), 20 states have internal predecessors, (22), 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) [2021-11-07 02:14:37,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2021-11-07 02:14:37,584 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 12 [2021-11-07 02:14:37,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:14:37,584 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2021-11-07 02:14:37,588 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 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) [2021-11-07 02:14:37,588 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2021-11-07 02:14:37,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-07 02:14:37,598 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:14:37,598 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:14:37,623 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c76960b-6954-4261-9552-c6dc36501120/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 02:14:37,816 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c76960b-6954-4261-9552-c6dc36501120/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:14:37,817 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:14:37,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:14:37,818 INFO L85 PathProgramCache]: Analyzing trace with hash -649399050, now seen corresponding path program 1 times [2021-11-07 02:14:37,819 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:14:37,819 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1405751999] [2021-11-07 02:14:37,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:14:37,819 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:14:37,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c76960b-6954-4261-9552-c6dc36501120/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:14:37,823 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c76960b-6954-4261-9552-c6dc36501120/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:14:37,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c76960b-6954-4261-9552-c6dc36501120/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 02:14:38,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:14:38,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 02:14:38,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:14:38,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:14:38,467 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:14:38,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:14:38,769 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:14:38,769 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1405751999] [2021-11-07 02:14:38,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1405751999] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:14:38,770 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:14:38,770 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-07 02:14:38,770 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402738478] [2021-11-07 02:14:38,771 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 02:14:38,771 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:14:38,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 02:14:38,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-07 02:14:38,773 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:14:39,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:14:39,052 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2021-11-07 02:14:39,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 02:14:39,054 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-07 02:14:39,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:14:39,054 INFO L225 Difference]: With dead ends: 21 [2021-11-07 02:14:39,055 INFO L226 Difference]: Without dead ends: 0 [2021-11-07 02:14:39,055 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-11-07 02:14:39,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-07 02:14:39,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-07 02:14:39,056 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) [2021-11-07 02:14:39,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-07 02:14:39,056 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2021-11-07 02:14:39,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:14:39,057 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-07 02:14:39,057 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:14:39,057 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-07 02:14:39,057 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-07 02:14:39,060 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 02:14:39,087 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c76960b-6954-4261-9552-c6dc36501120/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 02:14:39,272 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c76960b-6954-4261-9552-c6dc36501120/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:14:39,274 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-07 02:14:39,278 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:14:39,311 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:14:39,312 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:14:39,315 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:14:39,374 INFO L857 garLoopResultBuilder]: For program point L60(lines 60 61) no Hoare annotation was computed. [2021-11-07 02:14:39,374 INFO L857 garLoopResultBuilder]: For program point L44(lines 44 45) no Hoare annotation was computed. [2021-11-07 02:14:39,374 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-07 02:14:39,374 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-11-07 02:14:39,375 INFO L857 garLoopResultBuilder]: For program point L53(lines 53 75) no Hoare annotation was computed. [2021-11-07 02:14:39,375 INFO L857 garLoopResultBuilder]: For program point L37(lines 37 40) no Hoare annotation was computed. [2021-11-07 02:14:39,375 INFO L857 garLoopResultBuilder]: For program point L62(lines 62 74) no Hoare annotation was computed. [2021-11-07 02:14:39,375 INFO L857 garLoopResultBuilder]: For program point L54(lines 54 57) no Hoare annotation was computed. [2021-11-07 02:14:39,375 INFO L857 garLoopResultBuilder]: For program point L46(lines 46 51) no Hoare annotation was computed. [2021-11-07 02:14:39,376 INFO L857 garLoopResultBuilder]: For program point L96(lines 96 99) no Hoare annotation was computed. [2021-11-07 02:14:39,376 INFO L857 garLoopResultBuilder]: For program point L63(lines 63 72) no Hoare annotation was computed. [2021-11-07 02:14:39,376 INFO L857 garLoopResultBuilder]: For program point L63-1(lines 63 72) no Hoare annotation was computed. [2021-11-07 02:14:39,376 INFO L857 garLoopResultBuilder]: For program point L47(lines 47 48) no Hoare annotation was computed. [2021-11-07 02:14:39,376 INFO L857 garLoopResultBuilder]: For program point L47-2(lines 47 48) no Hoare annotation was computed. [2021-11-07 02:14:39,376 INFO L857 garLoopResultBuilder]: For program point L97(line 97) no Hoare annotation was computed. [2021-11-07 02:14:39,377 INFO L857 garLoopResultBuilder]: For program point L64(lines 64 71) no Hoare annotation was computed. [2021-11-07 02:14:39,377 INFO L857 garLoopResultBuilder]: For program point L31(lines 31 75) no Hoare annotation was computed. [2021-11-07 02:14:39,377 INFO L857 garLoopResultBuilder]: For program point L32(lines 32 52) no Hoare annotation was computed. [2021-11-07 02:14:39,377 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-11-07 02:14:39,377 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 97) no Hoare annotation was computed. [2021-11-07 02:14:39,378 INFO L857 garLoopResultBuilder]: For program point L24-1(lines 24 29) no Hoare annotation was computed. [2021-11-07 02:14:39,379 INFO L853 garLoopResultBuilder]: At program point L24-2(lines 24 29) the Hoare annotation is: (not (fp.eq ULTIMATE.start_ceil_double_~x ULTIMATE.start_ceil_double_~x)) [2021-11-07 02:14:39,379 INFO L857 garLoopResultBuilder]: For program point L24-3(lines 24 29) no Hoare annotation was computed. [2021-11-07 02:14:39,380 INFO L853 garLoopResultBuilder]: At program point L82(lines 21 83) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_ceil_double_~x ULTIMATE.start_ceil_double_~x)) (not (fp.eq |ULTIMATE.start_ceil_double_#res| |ULTIMATE.start_ceil_double_#res|))) [2021-11-07 02:14:39,380 INFO L857 garLoopResultBuilder]: For program point L33(lines 33 41) no Hoare annotation was computed. [2021-11-07 02:14:39,380 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-07 02:14:39,381 INFO L853 garLoopResultBuilder]: At program point L17(line 17) the Hoare annotation is: (and (= (_ bv1 32) |ULTIMATE.start_isnan_double_#res|) (not (fp.eq ULTIMATE.start_ceil_double_~x ULTIMATE.start_ceil_double_~x)) (not (fp.eq |ULTIMATE.start_ceil_double_#res| |ULTIMATE.start_ceil_double_#res|))) [2021-11-07 02:14:39,381 INFO L857 garLoopResultBuilder]: For program point L34(lines 34 40) no Hoare annotation was computed. [2021-11-07 02:14:39,381 INFO L857 garLoopResultBuilder]: For program point L76(lines 76 81) no Hoare annotation was computed. [2021-11-07 02:14:39,381 INFO L857 garLoopResultBuilder]: For program point L76-1(lines 21 83) no Hoare annotation was computed. [2021-11-07 02:14:39,382 INFO L857 garLoopResultBuilder]: For program point L76-2(lines 76 81) no Hoare annotation was computed. [2021-11-07 02:14:39,382 INFO L860 garLoopResultBuilder]: At program point L101(lines 85 102) the Hoare annotation is: true [2021-11-07 02:14:39,382 INFO L857 garLoopResultBuilder]: For program point L68(lines 68 69) no Hoare annotation was computed. [2021-11-07 02:14:39,382 INFO L857 garLoopResultBuilder]: For program point L68-2(lines 68 69) no Hoare annotation was computed. [2021-11-07 02:14:39,387 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-11-07 02:14:39,389 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-07 02:14:39,405 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 02:14:39 BoogieIcfgContainer [2021-11-07 02:14:39,405 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-07 02:14:39,406 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-07 02:14:39,407 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-07 02:14:39,407 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-07 02:14:39,408 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:14:34" (3/4) ... [2021-11-07 02:14:39,412 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-07 02:14:39,427 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2021-11-07 02:14:39,427 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-11-07 02:14:39,428 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-07 02:14:39,428 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-07 02:14:39,461 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: !~fp.eq~DOUBLE(x, x) && !~fp.eq~DOUBLE(\result, \result) [2021-11-07 02:14:39,462 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (1bv32 == \result && !~fp.eq~DOUBLE(x, x)) && !~fp.eq~DOUBLE(\result, \result) [2021-11-07 02:14:39,489 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c76960b-6954-4261-9552-c6dc36501120/bin/utaipan-UUZaoUuFF8/witness.graphml [2021-11-07 02:14:39,489 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-07 02:14:39,491 INFO L168 Benchmark]: Toolchain (without parser) took 8248.70 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 32.6 MB in the beginning and 29.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-11-07 02:14:39,492 INFO L168 Benchmark]: CDTParser took 1.34 ms. Allocated memory is still 54.5 MB. Free memory is still 36.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 02:14:39,492 INFO L168 Benchmark]: CACSL2BoogieTranslator took 377.13 ms. Allocated memory is still 54.5 MB. Free memory was 32.4 MB in the beginning and 34.8 MB in the end (delta: -2.4 MB). Peak memory consumption was 11.3 MB. Max. memory is 16.1 GB. [2021-11-07 02:14:39,493 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.72 ms. Allocated memory is still 54.5 MB. Free memory was 34.8 MB in the beginning and 33.1 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 02:14:39,494 INFO L168 Benchmark]: Boogie Preprocessor took 44.11 ms. Allocated memory is still 54.5 MB. Free memory was 33.1 MB in the beginning and 31.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 02:14:39,495 INFO L168 Benchmark]: RCFGBuilder took 2554.46 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 31.4 MB in the beginning and 43.8 MB in the end (delta: -12.4 MB). Peak memory consumption was 10.3 MB. Max. memory is 16.1 GB. [2021-11-07 02:14:39,496 INFO L168 Benchmark]: TraceAbstraction took 5121.68 ms. Allocated memory is still 67.1 MB. Free memory was 43.2 MB in the beginning and 33.2 MB in the end (delta: 10.0 MB). Peak memory consumption was 9.8 MB. Max. memory is 16.1 GB. [2021-11-07 02:14:39,496 INFO L168 Benchmark]: Witness Printer took 82.81 ms. Allocated memory is still 67.1 MB. Free memory was 33.2 MB in the beginning and 29.8 MB in the end (delta: 3.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 02:14:39,500 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.34 ms. Allocated memory is still 54.5 MB. Free memory is still 36.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 377.13 ms. Allocated memory is still 54.5 MB. Free memory was 32.4 MB in the beginning and 34.8 MB in the end (delta: -2.4 MB). Peak memory consumption was 11.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 50.72 ms. Allocated memory is still 54.5 MB. Free memory was 34.8 MB in the beginning and 33.1 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 44.11 ms. Allocated memory is still 54.5 MB. Free memory was 33.1 MB in the beginning and 31.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2554.46 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 31.4 MB in the beginning and 43.8 MB in the end (delta: -12.4 MB). Peak memory consumption was 10.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5121.68 ms. Allocated memory is still 67.1 MB. Free memory was 43.2 MB in the beginning and 33.2 MB in the end (delta: 10.0 MB). Peak memory consumption was 9.8 MB. Max. memory is 16.1 GB. * Witness Printer took 82.81 ms. Allocated memory is still 67.1 MB. Free memory was 33.2 MB in the beginning and 29.8 MB in the end (delta: 3.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 97]: 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, 34 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 5.0s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 68 SDtfs, 32 SDslu, 90 SDs, 0 SdLazy, 69 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 76 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred in iteration=0, InterpolantAutomatonStates: 13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 8 NumberOfFragments, 26 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 8 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 38 NumberOfCodeBlocks, 38 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 70 ConstructedInterpolants, 12 QuantifiedInterpolants, 249 SizeOfPredicates, 18 NumberOfNonLiveVariables, 145 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: (1bv32 == \result && !~fp.eq~DOUBLE(x, x)) && !~fp.eq~DOUBLE(\result, \result) - InvariantResult [Line: 85]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: !~fp.eq~DOUBLE(x, x) - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: !~fp.eq~DOUBLE(x, x) && !~fp.eq~DOUBLE(\result, \result) RESULT: Ultimate proved your program to be correct! [2021-11-07 02:14:39,578 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c76960b-6954-4261-9552-c6dc36501120/bin/utaipan-UUZaoUuFF8/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