./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1032a.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fe1a7b3-bb8d-40da-9d81-68652289dcab/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fe1a7b3-bb8d-40da-9d81-68652289dcab/bin/utaipan-verify-SwPr7d2a91/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fe1a7b3-bb8d-40da-9d81-68652289dcab/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fe1a7b3-bb8d-40da-9d81-68652289dcab/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1032a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fe1a7b3-bb8d-40da-9d81-68652289dcab/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fe1a7b3-bb8d-40da-9d81-68652289dcab/bin/utaipan-verify-SwPr7d2a91 --witnessprinter.witness.filename witness --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 d4dfd0c51c81284345e5d6ac5423c9a25c50963a25059bb5410623e01e53b24e --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:50:30,324 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:50:30,450 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fe1a7b3-bb8d-40da-9d81-68652289dcab/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-24 23:50:30,461 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:50:30,462 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 23:50:30,505 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:50:30,506 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 23:50:30,507 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 23:50:30,508 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:50:30,514 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 23:50:30,515 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-24 23:50:30,517 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-24 23:50:30,517 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-24 23:50:30,519 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-24 23:50:30,520 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-24 23:50:30,520 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-24 23:50:30,521 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-24 23:50:30,521 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-24 23:50:30,522 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-24 23:50:30,523 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-24 23:50:30,523 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-24 23:50:30,524 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-24 23:50:30,525 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:50:30,526 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 23:50:30,527 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 23:50:30,527 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 23:50:30,528 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 23:50:30,528 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:50:30,529 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 23:50:30,529 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:50:30,531 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 23:50:30,531 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 23:50:30,532 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 23:50:30,532 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:50:30,533 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:50:30,533 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 23:50:30,533 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 23:50:30,534 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:50:30,534 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:50:30,534 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:50:30,535 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 23:50:30,535 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-24 23:50:30,536 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 23:50:30,536 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 23:50:30,537 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 23:50:30,537 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-24 23:50:30,537 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 23:50:30,538 INFO L153 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_0fe1a7b3-bb8d-40da-9d81-68652289dcab/bin/utaipan-verify-SwPr7d2a91/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fe1a7b3-bb8d-40da-9d81-68652289dcab/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d4dfd0c51c81284345e5d6ac5423c9a25c50963a25059bb5410623e01e53b24e [2023-11-24 23:50:30,867 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:50:30,893 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:50:30,896 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:50:30,899 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:50:30,899 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:50:30,901 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fe1a7b3-bb8d-40da-9d81-68652289dcab/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/float-newlib/float_req_bl_1032a.c [2023-11-24 23:50:34,245 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:50:34,470 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:50:34,471 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fe1a7b3-bb8d-40da-9d81-68652289dcab/sv-benchmarks/c/float-newlib/float_req_bl_1032a.c [2023-11-24 23:50:34,480 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fe1a7b3-bb8d-40da-9d81-68652289dcab/bin/utaipan-verify-SwPr7d2a91/data/d3aedb4aa/acdde1f1122045498fe4657f55afa41b/FLAG8b5bb7279 [2023-11-24 23:50:34,502 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fe1a7b3-bb8d-40da-9d81-68652289dcab/bin/utaipan-verify-SwPr7d2a91/data/d3aedb4aa/acdde1f1122045498fe4657f55afa41b [2023-11-24 23:50:34,507 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:50:34,508 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:50:34,524 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:50:34,524 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:50:34,536 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:50:34,537 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:50:34" (1/1) ... [2023-11-24 23:50:34,538 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b556249 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:50:34, skipping insertion in model container [2023-11-24 23:50:34,538 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:50:34" (1/1) ... [2023-11-24 23:50:34,601 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:50:34,818 WARN L240 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_0fe1a7b3-bb8d-40da-9d81-68652289dcab/sv-benchmarks/c/float-newlib/float_req_bl_1032a.c[1751,1764] [2023-11-24 23:50:34,823 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:50:34,834 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 23:50:34,860 WARN L240 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_0fe1a7b3-bb8d-40da-9d81-68652289dcab/sv-benchmarks/c/float-newlib/float_req_bl_1032a.c[1751,1764] [2023-11-24 23:50:34,861 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:50:34,880 INFO L206 MainTranslator]: Completed translation [2023-11-24 23:50:34,880 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:50:34 WrapperNode [2023-11-24 23:50:34,880 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:50:34,882 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 23:50:34,882 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 23:50:34,882 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 23:50:34,890 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:50:34" (1/1) ... [2023-11-24 23:50:34,900 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:50:34" (1/1) ... [2023-11-24 23:50:34,926 INFO L138 Inliner]: procedures = 17, calls = 21, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 129 [2023-11-24 23:50:34,927 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 23:50:34,928 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 23:50:34,928 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 23:50:34,928 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 23:50:34,937 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:50:34" (1/1) ... [2023-11-24 23:50:34,938 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:50:34" (1/1) ... [2023-11-24 23:50:34,941 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:50:34" (1/1) ... [2023-11-24 23:50:34,941 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:50:34" (1/1) ... [2023-11-24 23:50:34,949 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:50:34" (1/1) ... [2023-11-24 23:50:34,953 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:50:34" (1/1) ... [2023-11-24 23:50:34,955 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:50:34" (1/1) ... [2023-11-24 23:50:34,957 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:50:34" (1/1) ... [2023-11-24 23:50:34,960 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 23:50:34,961 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 23:50:34,961 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 23:50:34,961 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 23:50:34,962 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:50:34" (1/1) ... [2023-11-24 23:50:34,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:50:35,002 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fe1a7b3-bb8d-40da-9d81-68652289dcab/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:50:35,018 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fe1a7b3-bb8d-40da-9d81-68652289dcab/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-24 23:50:35,021 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fe1a7b3-bb8d-40da-9d81-68652289dcab/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-24 23:50:35,051 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 23:50:35,052 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-24 23:50:35,052 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 23:50:35,052 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2023-11-24 23:50:35,052 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-24 23:50:35,052 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2023-11-24 23:50:35,052 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 23:50:35,053 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 23:50:35,053 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-24 23:50:35,053 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 23:50:35,135 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 23:50:35,138 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 23:50:35,404 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 23:50:35,613 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 23:50:35,613 INFO L309 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-24 23:50:35,615 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:50:35 BoogieIcfgContainer [2023-11-24 23:50:35,615 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 23:50:35,618 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 23:50:35,618 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 23:50:35,622 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 23:50:35,628 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 11:50:34" (1/3) ... [2023-11-24 23:50:35,629 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39e751f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:50:35, skipping insertion in model container [2023-11-24 23:50:35,630 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:50:34" (2/3) ... [2023-11-24 23:50:35,630 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39e751f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:50:35, skipping insertion in model container [2023-11-24 23:50:35,630 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:50:35" (3/3) ... [2023-11-24 23:50:35,632 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1032a.c [2023-11-24 23:50:35,649 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 23:50:35,649 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-24 23:50:35,692 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 23:50:35,698 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@71164a3d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 23:50:35,698 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-24 23:50:35,712 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 19 states have internal predecessors, (30), 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) [2023-11-24 23:50:35,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-24 23:50:35,718 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:50:35,719 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:50:35,719 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:50:35,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:50:35,724 INFO L85 PathProgramCache]: Analyzing trace with hash -1145562914, now seen corresponding path program 1 times [2023-11-24 23:50:35,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:50:35,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900862761] [2023-11-24 23:50:35,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:50:35,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:50:35,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:50:35,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:50:35,901 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:50:35,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900862761] [2023-11-24 23:50:35,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900862761] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:50:35,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:50:35,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 23:50:35,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423724214] [2023-11-24 23:50:35,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:50:35,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-24 23:50:35,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:50:35,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-24 23:50:35,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-24 23:50:35,964 INFO L87 Difference]: Start difference. First operand has 20 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 19 states have internal predecessors, (30), 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) [2023-11-24 23:50:36,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:50:36,053 INFO L93 Difference]: Finished difference Result 39 states and 59 transitions. [2023-11-24 23:50:36,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 23:50:36,057 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 [2023-11-24 23:50:36,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:50:36,067 INFO L225 Difference]: With dead ends: 39 [2023-11-24 23:50:36,067 INFO L226 Difference]: Without dead ends: 18 [2023-11-24 23:50:36,074 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-24 23:50:36,080 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:50:36,082 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 15 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:50:36,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2023-11-24 23:50:36,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2023-11-24 23:50:36,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 17 states have internal predecessors, (21), 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) [2023-11-24 23:50:36,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2023-11-24 23:50:36,127 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 21 transitions. Word has length 8 [2023-11-24 23:50:36,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:50:36,129 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 21 transitions. [2023-11-24 23:50:36,129 INFO L496 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) [2023-11-24 23:50:36,130 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2023-11-24 23:50:36,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-24 23:50:36,131 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:50:36,131 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:50:36,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 23:50:36,132 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:50:36,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:50:36,135 INFO L85 PathProgramCache]: Analyzing trace with hash 450721921, now seen corresponding path program 1 times [2023-11-24 23:50:36,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:50:36,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367385658] [2023-11-24 23:50:36,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:50:36,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:50:36,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 23:50:36,271 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-24 23:50:36,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 23:50:36,402 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-24 23:50:36,404 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-24 23:50:36,406 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-24 23:50:36,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-24 23:50:36,416 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-24 23:50:36,421 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-24 23:50:36,442 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short15 could not be translated [2023-11-24 23:50:36,470 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.11 11:50:36 BoogieIcfgContainer [2023-11-24 23:50:36,471 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-24 23:50:36,472 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-24 23:50:36,472 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-24 23:50:36,472 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-24 23:50:36,473 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:50:35" (3/4) ... [2023-11-24 23:50:36,476 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-24 23:50:36,478 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-24 23:50:36,479 INFO L158 Benchmark]: Toolchain (without parser) took 1970.27ms. Allocated memory is still 148.9MB. Free memory was 122.8MB in the beginning and 51.5MB in the end (delta: 71.3MB). Peak memory consumption was 69.2MB. Max. memory is 16.1GB. [2023-11-24 23:50:36,479 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 111.1MB. Free memory is still 78.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 23:50:36,482 INFO L158 Benchmark]: CACSL2BoogieTranslator took 356.95ms. Allocated memory is still 148.9MB. Free memory was 122.3MB in the beginning and 111.0MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-24 23:50:36,487 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.30ms. Allocated memory is still 148.9MB. Free memory was 111.0MB in the beginning and 109.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-24 23:50:36,488 INFO L158 Benchmark]: Boogie Preprocessor took 32.29ms. Allocated memory is still 148.9MB. Free memory was 109.3MB in the beginning and 107.3MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-24 23:50:36,492 INFO L158 Benchmark]: RCFGBuilder took 654.51ms. Allocated memory is still 148.9MB. Free memory was 107.3MB in the beginning and 80.9MB in the end (delta: 26.5MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2023-11-24 23:50:36,494 INFO L158 Benchmark]: TraceAbstraction took 853.40ms. Allocated memory is still 148.9MB. Free memory was 80.1MB in the beginning and 51.5MB in the end (delta: 28.6MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2023-11-24 23:50:36,494 INFO L158 Benchmark]: Witness Printer took 6.02ms. Allocated memory is still 148.9MB. Free memory is still 51.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 23:50:36,501 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 111.1MB. Free memory is still 78.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 356.95ms. Allocated memory is still 148.9MB. Free memory was 122.3MB in the beginning and 111.0MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 45.30ms. Allocated memory is still 148.9MB. Free memory was 111.0MB in the beginning and 109.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 32.29ms. Allocated memory is still 148.9MB. Free memory was 109.3MB in the beginning and 107.3MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 654.51ms. Allocated memory is still 148.9MB. Free memory was 107.3MB in the beginning and 80.9MB in the end (delta: 26.5MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * TraceAbstraction took 853.40ms. Allocated memory is still 148.9MB. Free memory was 80.1MB in the beginning and 51.5MB in the end (delta: 28.6MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * Witness Printer took 6.02ms. Allocated memory is still 148.9MB. Free memory is still 51.5MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short15 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * 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: 82]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 81, overapproximation of bitwiseAnd at line 25, overapproximation of someBinaryArithmeticFLOAToperation at line 45. Possible FailurePath: [L77] float x = 0.0f; [L78] CALL, EXPR round_float(x) [L15] __uint32_t w; [L17] int exponent_less_127; VAL [\old(x)=0, x=0] [L20] ieee_float_shape_type gf_u; [L21] EXPR gf_u.value = (x) [L22] EXPR gf_u.word [L22] EXPR (w) = gf_u.word [L19-L23] { ieee_float_shape_type gf_u; gf_u.value = (x); (w) = gf_u.word; } VAL [\old(x)=0, w=2139095040, x=0] [L25] EXPR w & 0x7f800000 [L25] exponent_less_127 = (int)((w & 0x7f800000) >> 23) - 127 [L27] COND FALSE !(exponent_less_127 < 23) [L43] COND TRUE exponent_less_127 == 128 [L45] return x + x; VAL [\old(x)=0, \result=0, exponent_less_127=128, w=2139095040, x=0] [L78] RET, EXPR round_float(x) [L78] float res = round_float(x); [L81] EXPR res == 0.0f && __signbit_float(res) == 0 VAL [res=0, x=0] [L81] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L82] reach_error() VAL [res=0, x=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 15 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 8 IncrementalHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 15 mSDtfsCounter, 8 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s 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 [2023-11-24 23:50:36,529 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fe1a7b3-bb8d-40da-9d81-68652289dcab/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fe1a7b3-bb8d-40da-9d81-68652289dcab/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fe1a7b3-bb8d-40da-9d81-68652289dcab/bin/utaipan-verify-SwPr7d2a91/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fe1a7b3-bb8d-40da-9d81-68652289dcab/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fe1a7b3-bb8d-40da-9d81-68652289dcab/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1032a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fe1a7b3-bb8d-40da-9d81-68652289dcab/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fe1a7b3-bb8d-40da-9d81-68652289dcab/bin/utaipan-verify-SwPr7d2a91 --witnessprinter.witness.filename witness --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 d4dfd0c51c81284345e5d6ac5423c9a25c50963a25059bb5410623e01e53b24e --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:50:39,436 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:50:39,526 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fe1a7b3-bb8d-40da-9d81-68652289dcab/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2023-11-24 23:50:39,532 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:50:39,533 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 23:50:39,563 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:50:39,564 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 23:50:39,565 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 23:50:39,566 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:50:39,567 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 23:50:39,567 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-24 23:50:39,568 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-24 23:50:39,569 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-24 23:50:39,569 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-24 23:50:39,570 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-24 23:50:39,570 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-24 23:50:39,571 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:50:39,572 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 23:50:39,573 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 23:50:39,573 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 23:50:39,574 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:50:39,575 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 23:50:39,575 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:50:39,576 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 23:50:39,576 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-24 23:50:39,577 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-24 23:50:39,577 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-24 23:50:39,578 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 23:50:39,579 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 23:50:39,579 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:50:39,580 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:50:39,580 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 23:50:39,581 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 23:50:39,582 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 23:50:39,582 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:50:39,583 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:50:39,583 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:50:39,584 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 23:50:39,585 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-24 23:50:39,585 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-24 23:50:39,586 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 23:50:39,586 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 23:50:39,586 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-24 23:50:39,587 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 23:50:39,587 INFO L153 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_0fe1a7b3-bb8d-40da-9d81-68652289dcab/bin/utaipan-verify-SwPr7d2a91/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fe1a7b3-bb8d-40da-9d81-68652289dcab/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d4dfd0c51c81284345e5d6ac5423c9a25c50963a25059bb5410623e01e53b24e [2023-11-24 23:50:39,974 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:50:40,000 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:50:40,005 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:50:40,007 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:50:40,007 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:50:40,009 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fe1a7b3-bb8d-40da-9d81-68652289dcab/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/float-newlib/float_req_bl_1032a.c [2023-11-24 23:50:43,172 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:50:43,436 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:50:43,437 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fe1a7b3-bb8d-40da-9d81-68652289dcab/sv-benchmarks/c/float-newlib/float_req_bl_1032a.c [2023-11-24 23:50:43,445 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fe1a7b3-bb8d-40da-9d81-68652289dcab/bin/utaipan-verify-SwPr7d2a91/data/a30742a3b/7746f356feb243ca8aa33ee116994f57/FLAGd32f74a1f [2023-11-24 23:50:43,466 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fe1a7b3-bb8d-40da-9d81-68652289dcab/bin/utaipan-verify-SwPr7d2a91/data/a30742a3b/7746f356feb243ca8aa33ee116994f57 [2023-11-24 23:50:43,472 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:50:43,473 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:50:43,475 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:50:43,475 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:50:43,481 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:50:43,482 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:50:43" (1/1) ... [2023-11-24 23:50:43,483 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bed37d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:50:43, skipping insertion in model container [2023-11-24 23:50:43,483 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:50:43" (1/1) ... [2023-11-24 23:50:43,506 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:50:43,689 WARN L240 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_0fe1a7b3-bb8d-40da-9d81-68652289dcab/sv-benchmarks/c/float-newlib/float_req_bl_1032a.c[1751,1764] [2023-11-24 23:50:43,694 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:50:43,709 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 23:50:43,735 WARN L240 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_0fe1a7b3-bb8d-40da-9d81-68652289dcab/sv-benchmarks/c/float-newlib/float_req_bl_1032a.c[1751,1764] [2023-11-24 23:50:43,736 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:50:43,755 INFO L206 MainTranslator]: Completed translation [2023-11-24 23:50:43,755 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:50:43 WrapperNode [2023-11-24 23:50:43,755 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:50:43,757 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 23:50:43,757 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 23:50:43,757 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 23:50:43,768 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:50:43" (1/1) ... [2023-11-24 23:50:43,779 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:50:43" (1/1) ... [2023-11-24 23:50:43,801 INFO L138 Inliner]: procedures = 20, calls = 21, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 91 [2023-11-24 23:50:43,802 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 23:50:43,803 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 23:50:43,803 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 23:50:43,803 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 23:50:43,812 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:50:43" (1/1) ... [2023-11-24 23:50:43,813 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:50:43" (1/1) ... [2023-11-24 23:50:43,818 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:50:43" (1/1) ... [2023-11-24 23:50:43,818 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:50:43" (1/1) ... [2023-11-24 23:50:43,830 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:50:43" (1/1) ... [2023-11-24 23:50:43,841 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:50:43" (1/1) ... [2023-11-24 23:50:43,843 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:50:43" (1/1) ... [2023-11-24 23:50:43,845 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:50:43" (1/1) ... [2023-11-24 23:50:43,849 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 23:50:43,850 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 23:50:43,851 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 23:50:43,851 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 23:50:43,852 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:50:43" (1/1) ... [2023-11-24 23:50:43,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:50:43,881 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fe1a7b3-bb8d-40da-9d81-68652289dcab/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:50:43,948 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fe1a7b3-bb8d-40da-9d81-68652289dcab/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-24 23:50:43,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fe1a7b3-bb8d-40da-9d81-68652289dcab/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-24 23:50:43,983 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 23:50:43,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-24 23:50:43,983 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 23:50:43,983 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2023-11-24 23:50:43,983 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-24 23:50:43,983 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 23:50:43,984 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 23:50:43,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2023-11-24 23:50:43,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-24 23:50:43,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 23:50:44,139 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 23:50:44,158 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 23:50:44,531 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 23:50:44,574 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 23:50:44,576 INFO L309 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-24 23:50:44,577 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:50:44 BoogieIcfgContainer [2023-11-24 23:50:44,577 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 23:50:44,581 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 23:50:44,581 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 23:50:44,585 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 23:50:44,586 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 11:50:43" (1/3) ... [2023-11-24 23:50:44,587 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7001059d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:50:44, skipping insertion in model container [2023-11-24 23:50:44,587 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:50:43" (2/3) ... [2023-11-24 23:50:44,588 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7001059d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:50:44, skipping insertion in model container [2023-11-24 23:50:44,588 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:50:44" (3/3) ... [2023-11-24 23:50:44,590 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1032a.c [2023-11-24 23:50:44,610 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 23:50:44,611 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-24 23:50:44,673 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 23:50:44,684 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@b62288d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 23:50:44,684 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-24 23:50:44,689 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 20 states have (on average 1.7) internal successors, (34), 21 states have internal predecessors, (34), 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) [2023-11-24 23:50:44,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-24 23:50:44,697 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:50:44,698 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:50:44,699 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:50:44,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:50:44,706 INFO L85 PathProgramCache]: Analyzing trace with hash 561174546, now seen corresponding path program 1 times [2023-11-24 23:50:44,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-24 23:50:44,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1698542648] [2023-11-24 23:50:44,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:50:44,722 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 23:50:44,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fe1a7b3-bb8d-40da-9d81-68652289dcab/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-24 23:50:44,725 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fe1a7b3-bb8d-40da-9d81-68652289dcab/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 23:50:44,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fe1a7b3-bb8d-40da-9d81-68652289dcab/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-24 23:50:44,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:50:44,860 INFO L262 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-24 23:50:44,864 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:50:44,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:50:44,890 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:50:44,891 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-24 23:50:44,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1698542648] [2023-11-24 23:50:44,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1698542648] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:50:44,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:50:44,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 23:50:44,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038148931] [2023-11-24 23:50:44,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:50:44,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-24 23:50:44,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-24 23:50:44,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-24 23:50:44,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-24 23:50:44,959 INFO L87 Difference]: Start difference. First operand has 22 states, 20 states have (on average 1.7) internal successors, (34), 21 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:50:44,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:50:44,993 INFO L93 Difference]: Finished difference Result 43 states and 67 transitions. [2023-11-24 23:50:44,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 23:50:44,996 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-11-24 23:50:44,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:50:45,006 INFO L225 Difference]: With dead ends: 43 [2023-11-24 23:50:45,008 INFO L226 Difference]: Without dead ends: 20 [2023-11-24 23:50:45,011 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-24 23:50:45,016 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 23:50:45,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 23:50:45,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2023-11-24 23:50:45,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2023-11-24 23:50:45,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 19 states have internal predecessors, (25), 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) [2023-11-24 23:50:45,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 25 transitions. [2023-11-24 23:50:45,055 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 25 transitions. Word has length 9 [2023-11-24 23:50:45,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:50:45,056 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 25 transitions. [2023-11-24 23:50:45,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:50:45,057 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 25 transitions. [2023-11-24 23:50:45,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-24 23:50:45,058 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:50:45,058 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:50:45,067 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fe1a7b3-bb8d-40da-9d81-68652289dcab/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-24 23:50:45,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fe1a7b3-bb8d-40da-9d81-68652289dcab/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 23:50:45,261 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:50:45,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:50:45,262 INFO L85 PathProgramCache]: Analyzing trace with hash 1707272587, now seen corresponding path program 1 times [2023-11-24 23:50:45,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-24 23:50:45,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [63341382] [2023-11-24 23:50:45,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:50:45,263 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 23:50:45,264 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fe1a7b3-bb8d-40da-9d81-68652289dcab/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-24 23:50:45,265 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fe1a7b3-bb8d-40da-9d81-68652289dcab/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 23:50:45,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fe1a7b3-bb8d-40da-9d81-68652289dcab/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-24 23:50:45,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:50:45,348 INFO L262 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-24 23:50:45,352 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:50:45,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:50:45,611 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:50:45,612 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-24 23:50:45,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [63341382] [2023-11-24 23:50:45,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [63341382] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:50:45,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:50:45,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 23:50:45,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969117300] [2023-11-24 23:50:45,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:50:45,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 23:50:45,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-24 23:50:45,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 23:50:45,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:50:45,624 INFO L87 Difference]: Start difference. First operand 20 states and 25 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:50:45,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:50:45,732 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2023-11-24 23:50:45,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 23:50:45,733 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-11-24 23:50:45,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:50:45,734 INFO L225 Difference]: With dead ends: 31 [2023-11-24 23:50:45,734 INFO L226 Difference]: Without dead ends: 18 [2023-11-24 23:50:45,735 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-24 23:50:45,736 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 20 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:50:45,737 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 28 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:50:45,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2023-11-24 23:50:45,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2023-11-24 23:50:45,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 17 states have internal predecessors, (18), 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) [2023-11-24 23:50:45,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2023-11-24 23:50:45,743 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 10 [2023-11-24 23:50:45,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:50:45,743 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2023-11-24 23:50:45,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:50:45,744 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2023-11-24 23:50:45,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-24 23:50:45,744 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:50:45,745 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:50:45,753 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fe1a7b3-bb8d-40da-9d81-68652289dcab/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-11-24 23:50:45,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fe1a7b3-bb8d-40da-9d81-68652289dcab/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 23:50:45,949 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:50:45,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:50:45,949 INFO L85 PathProgramCache]: Analyzing trace with hash 987253828, now seen corresponding path program 1 times [2023-11-24 23:50:45,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-24 23:50:45,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1851999044] [2023-11-24 23:50:45,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:50:45,950 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 23:50:45,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fe1a7b3-bb8d-40da-9d81-68652289dcab/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-24 23:50:45,952 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fe1a7b3-bb8d-40da-9d81-68652289dcab/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 23:50:45,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fe1a7b3-bb8d-40da-9d81-68652289dcab/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-11-24 23:50:46,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:50:46,038 INFO L262 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-24 23:50:46,041 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:50:46,078 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-24 23:50:46,251 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 19 [2023-11-24 23:50:46,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:50:46,325 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:50:46,326 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-24 23:50:46,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1851999044] [2023-11-24 23:50:46,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1851999044] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:50:46,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:50:46,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 23:50:46,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670052531] [2023-11-24 23:50:46,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:50:46,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 23:50:46,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-24 23:50:46,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 23:50:46,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-24 23:50:46,334 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 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) [2023-11-24 23:50:46,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:50:46,483 INFO L93 Difference]: Finished difference Result 21 states and 20 transitions. [2023-11-24 23:50:46,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-24 23:50:46,484 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 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 14 [2023-11-24 23:50:46,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:50:46,485 INFO L225 Difference]: With dead ends: 21 [2023-11-24 23:50:46,485 INFO L226 Difference]: Without dead ends: 18 [2023-11-24 23:50:46,485 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-11-24 23:50:46,486 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 19 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:50:46,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 24 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:50:46,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2023-11-24 23:50:46,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2023-11-24 23:50:46,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.0) internal successors, (17), 17 states have internal predecessors, (17), 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) [2023-11-24 23:50:46,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 17 transitions. [2023-11-24 23:50:46,492 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 17 transitions. Word has length 14 [2023-11-24 23:50:46,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:50:46,492 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 17 transitions. [2023-11-24 23:50:46,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 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) [2023-11-24 23:50:46,493 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 17 transitions. [2023-11-24 23:50:46,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-24 23:50:46,494 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:50:46,494 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:50:46,502 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fe1a7b3-bb8d-40da-9d81-68652289dcab/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-11-24 23:50:46,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fe1a7b3-bb8d-40da-9d81-68652289dcab/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 23:50:46,695 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:50:46,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:50:46,695 INFO L85 PathProgramCache]: Analyzing trace with hash -1159975514, now seen corresponding path program 1 times [2023-11-24 23:50:46,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-24 23:50:46,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [249670215] [2023-11-24 23:50:46,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:50:46,696 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 23:50:46,696 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fe1a7b3-bb8d-40da-9d81-68652289dcab/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-24 23:50:46,698 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fe1a7b3-bb8d-40da-9d81-68652289dcab/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 23:50:46,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fe1a7b3-bb8d-40da-9d81-68652289dcab/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-11-24 23:50:46,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:50:46,797 INFO L262 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-24 23:50:46,801 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:50:46,834 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-24 23:50:46,992 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-24 23:50:46,993 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 24 [2023-11-24 23:50:47,255 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-24 23:50:47,256 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 28 [2023-11-24 23:50:47,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:50:47,412 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:50:47,412 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-24 23:50:47,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [249670215] [2023-11-24 23:50:47,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [249670215] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:50:47,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:50:47,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-24 23:50:47,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656493439] [2023-11-24 23:50:47,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:50:47,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-24 23:50:47,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-24 23:50:47,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-24 23:50:47,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-11-24 23:50:47,419 INFO L87 Difference]: Start difference. First operand 18 states and 17 transitions. Second operand has 10 states, 10 states have (on average 1.7) internal successors, (17), 9 states have internal predecessors, (17), 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) [2023-11-24 23:50:47,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:50:47,946 INFO L93 Difference]: Finished difference Result 18 states and 17 transitions. [2023-11-24 23:50:47,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-24 23:50:47,947 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.7) internal successors, (17), 9 states have internal predecessors, (17), 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 17 [2023-11-24 23:50:47,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:50:47,947 INFO L225 Difference]: With dead ends: 18 [2023-11-24 23:50:47,947 INFO L226 Difference]: Without dead ends: 0 [2023-11-24 23:50:47,948 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2023-11-24 23:50:47,949 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 26 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-24 23:50:47,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 27 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-24 23:50:47,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-24 23:50:47,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-24 23:50:47,950 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) [2023-11-24 23:50:47,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-24 23:50:47,950 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2023-11-24 23:50:47,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:50:47,951 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-24 23:50:47,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.7) internal successors, (17), 9 states have internal predecessors, (17), 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) [2023-11-24 23:50:47,951 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-24 23:50:47,951 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-24 23:50:47,955 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-24 23:50:47,963 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fe1a7b3-bb8d-40da-9d81-68652289dcab/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-11-24 23:50:48,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fe1a7b3-bb8d-40da-9d81-68652289dcab/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 23:50:48,161 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-24 23:50:48,267 INFO L899 garLoopResultBuilder]: For program point L27(lines 27 48) no Hoare annotation was computed. [2023-11-24 23:50:48,267 INFO L899 garLoopResultBuilder]: For program point L60-1(lines 60 64) no Hoare annotation was computed. [2023-11-24 23:50:48,268 INFO L895 garLoopResultBuilder]: At program point L60-2(lines 60 64) the Hoare annotation is: (and (= |ULTIMATE.start_round_float_#res#1| (_ +zero 8 24)) (exists ((|v_ULTIMATE.start_round_float_~#gf_u~0#1.base_14| (_ BitVec 32)) (|v_ULTIMATE.start_round_float_~#sf_u~0#1.base_12| (_ BitVec 32))) (let ((.cse0 (select (select |#memory_int| |v_ULTIMATE.start_round_float_~#sf_u~0#1.base_12|) (_ bv0 32)))) (let ((.cse1 (fp ((_ extract 31 31) .cse0) ((_ extract 30 23) .cse0) ((_ extract 22 0) .cse0)))) (and (= .cse0 (select (select |#memory_int| |v_ULTIMATE.start_round_float_~#gf_u~0#1.base_14|) (_ bv0 32))) (= |ULTIMATE.start_main_~res~0#1| .cse1) (= .cse1 (_ +zero 8 24)))))) (exists ((|v_ULTIMATE.start_round_float_~#gf_u~0#1.base_14| (_ BitVec 32)) (|v_ULTIMATE.start_round_float_~#sf_u~0#1.base_12| (_ BitVec 32))) (let ((.cse2 (select (select |#memory_int| |v_ULTIMATE.start_round_float_~#sf_u~0#1.base_12|) (_ bv0 32)))) (let ((.cse3 (fp ((_ extract 31 31) .cse2) ((_ extract 30 23) .cse2) ((_ extract 22 0) .cse2)))) (and (= .cse2 (select (select |#memory_int| |v_ULTIMATE.start_round_float_~#gf_u~0#1.base_14|) (_ bv0 32))) (= .cse3 (_ +zero 8 24)) (= .cse3 |ULTIMATE.start___signbit_float_~x#1|))))) |ULTIMATE.start_main_#t~short9#1|) [2023-11-24 23:50:48,268 INFO L899 garLoopResultBuilder]: For program point L60-3(lines 60 64) no Hoare annotation was computed. [2023-11-24 23:50:48,268 INFO L899 garLoopResultBuilder]: For program point L19-1(lines 19 23) no Hoare annotation was computed. [2023-11-24 23:50:48,269 INFO L895 garLoopResultBuilder]: At program point L19-2(lines 19 23) the Hoare annotation is: (= |ULTIMATE.start_round_float_~x#1| (_ +zero 8 24)) [2023-11-24 23:50:48,269 INFO L899 garLoopResultBuilder]: For program point L81(line 81) no Hoare annotation was computed. [2023-11-24 23:50:48,269 INFO L899 garLoopResultBuilder]: For program point L19-3(lines 19 23) no Hoare annotation was computed. [2023-11-24 23:50:48,269 INFO L899 garLoopResultBuilder]: For program point L81-2(lines 81 84) no Hoare annotation was computed. [2023-11-24 23:50:48,269 INFO L899 garLoopResultBuilder]: For program point main_returnLabel#1(lines 69 87) no Hoare annotation was computed. [2023-11-24 23:50:48,269 INFO L899 garLoopResultBuilder]: For program point L28(lines 28 41) no Hoare annotation was computed. [2023-11-24 23:50:48,269 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 82) no Hoare annotation was computed. [2023-11-24 23:50:48,270 INFO L899 garLoopResultBuilder]: For program point L82(line 82) no Hoare annotation was computed. [2023-11-24 23:50:48,270 INFO L899 garLoopResultBuilder]: For program point L49(lines 49 53) no Hoare annotation was computed. [2023-11-24 23:50:48,270 INFO L895 garLoopResultBuilder]: At program point L49-1(lines 49 53) the Hoare annotation is: (and (= |ULTIMATE.start_round_float_~x#1| (_ +zero 8 24)) (exists ((v_subst_1 (_ BitVec 32))) (and (= (bvadd |ULTIMATE.start_round_float_~exponent_less_127~0#1| (_ bv127 32)) (bvlshr (bvand v_subst_1 (_ bv2139095040 32)) (_ bv23 32))) (= (fp ((_ extract 31 31) v_subst_1) ((_ extract 30 23) v_subst_1) ((_ extract 22 0) v_subst_1)) (_ +zero 8 24)))) (exists ((|v_ULTIMATE.start_round_float_~#gf_u~0#1.base_14| (_ BitVec 32))) (let ((.cse0 (select (select |#memory_int| |v_ULTIMATE.start_round_float_~#gf_u~0#1.base_14|) (_ bv0 32)))) (and (= |ULTIMATE.start_round_float_~w~0#1| .cse0) (= (fp ((_ extract 31 31) .cse0) ((_ extract 30 23) .cse0) ((_ extract 22 0) .cse0)) (_ +zero 8 24)))))) [2023-11-24 23:50:48,270 INFO L899 garLoopResultBuilder]: For program point L49-2(lines 49 53) no Hoare annotation was computed. [2023-11-24 23:50:48,270 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-24 23:50:48,271 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-24 23:50:48,271 INFO L899 garLoopResultBuilder]: For program point round_float_returnLabel#1(lines 14 55) no Hoare annotation was computed. [2023-11-24 23:50:48,271 INFO L899 garLoopResultBuilder]: For program point L30(lines 30 32) no Hoare annotation was computed. [2023-11-24 23:50:48,271 INFO L899 garLoopResultBuilder]: For program point L43(lines 43 47) no Hoare annotation was computed. [2023-11-24 23:50:48,271 INFO L899 garLoopResultBuilder]: For program point L35(lines 35 37) no Hoare annotation was computed. [2023-11-24 23:50:48,279 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-11-24 23:50:48,282 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-24 23:50:48,293 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: Missing case for function ~Pluszero~32 [2023-11-24 23:50:48,295 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: Missing case for function ~Pluszero~32 [2023-11-24 23:50:48,298 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: QuantifierExpression (exists v_subst_1 : bv32 :: ~bvadd~32(~exponent_less_127~0, 127bv32) == ~bvlshr~32(~bvand~32(v_subst_1, 2139095040bv32), 23bv32) && ~fp~32(v_subst_1[31:31], v_subst_1[30:23], v_subst_1[22:0]) == ~Pluszero~32()) could not be translated [2023-11-24 23:50:48,299 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: QuantifierExpression (exists v_ULTIMATE.start_round_float_~#gf_u~0#1.base_14 : bv32 :: ~w~0 == #memory_int[v_ULTIMATE.start_round_float_~#gf_u~0#1.base_14][0bv32] && ~fp~32(#memory_int[v_ULTIMATE.start_round_float_~#gf_u~0#1.base_14][0bv32][31:31], #memory_int[v_ULTIMATE.start_round_float_~#gf_u~0#1.base_14][0bv32][30:23], #memory_int[v_ULTIMATE.start_round_float_~#gf_u~0#1.base_14][0bv32][22:0]) == ~Pluszero~32()) could not be translated [2023-11-24 23:50:48,302 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: Missing case for function ~Pluszero~32 [2023-11-24 23:50:48,303 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: QuantifierExpression (exists v_ULTIMATE.start_round_float_~#gf_u~0#1.base_14 : bv32, v_ULTIMATE.start_round_float_~#sf_u~0#1.base_12 : bv32 :: (#memory_int[v_ULTIMATE.start_round_float_~#sf_u~0#1.base_12][0bv32] == #memory_int[v_ULTIMATE.start_round_float_~#gf_u~0#1.base_14][0bv32] && ~res~0 == ~fp~32(#memory_int[v_ULTIMATE.start_round_float_~#sf_u~0#1.base_12][0bv32][31:31], #memory_int[v_ULTIMATE.start_round_float_~#sf_u~0#1.base_12][0bv32][30:23], #memory_int[v_ULTIMATE.start_round_float_~#sf_u~0#1.base_12][0bv32][22:0])) && ~fp~32(#memory_int[v_ULTIMATE.start_round_float_~#sf_u~0#1.base_12][0bv32][31:31], #memory_int[v_ULTIMATE.start_round_float_~#sf_u~0#1.base_12][0bv32][30:23], #memory_int[v_ULTIMATE.start_round_float_~#sf_u~0#1.base_12][0bv32][22:0]) == ~Pluszero~32()) could not be translated [2023-11-24 23:50:48,307 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: QuantifierExpression (exists v_ULTIMATE.start_round_float_~#gf_u~0#1.base_14 : bv32, v_ULTIMATE.start_round_float_~#sf_u~0#1.base_12 : bv32 :: (#memory_int[v_ULTIMATE.start_round_float_~#sf_u~0#1.base_12][0bv32] == #memory_int[v_ULTIMATE.start_round_float_~#gf_u~0#1.base_14][0bv32] && ~fp~32(#memory_int[v_ULTIMATE.start_round_float_~#sf_u~0#1.base_12][0bv32][31:31], #memory_int[v_ULTIMATE.start_round_float_~#sf_u~0#1.base_12][0bv32][30:23], #memory_int[v_ULTIMATE.start_round_float_~#sf_u~0#1.base_12][0bv32][22:0]) == ~Pluszero~32()) && ~fp~32(#memory_int[v_ULTIMATE.start_round_float_~#sf_u~0#1.base_12][0bv32][31:31], #memory_int[v_ULTIMATE.start_round_float_~#sf_u~0#1.base_12][0bv32][30:23], #memory_int[v_ULTIMATE.start_round_float_~#sf_u~0#1.base_12][0bv32][22:0]) == ~x) could not be translated [2023-11-24 23:50:48,307 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short9 could not be translated [2023-11-24 23:50:48,309 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.11 11:50:48 BoogieIcfgContainer [2023-11-24 23:50:48,309 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-24 23:50:48,310 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-24 23:50:48,310 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-24 23:50:48,310 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-24 23:50:48,311 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:50:44" (3/4) ... [2023-11-24 23:50:48,313 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-24 23:50:48,329 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2023-11-24 23:50:48,330 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2023-11-24 23:50:48,330 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-24 23:50:48,331 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-24 23:50:48,419 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fe1a7b3-bb8d-40da-9d81-68652289dcab/bin/utaipan-verify-SwPr7d2a91/witness.graphml [2023-11-24 23:50:48,420 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fe1a7b3-bb8d-40da-9d81-68652289dcab/bin/utaipan-verify-SwPr7d2a91/witness.yml [2023-11-24 23:50:48,420 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-24 23:50:48,421 INFO L158 Benchmark]: Toolchain (without parser) took 4947.81ms. Allocated memory was 107.0MB in the beginning and 130.0MB in the end (delta: 23.1MB). Free memory was 83.2MB in the beginning and 66.1MB in the end (delta: 17.1MB). Peak memory consumption was 41.2MB. Max. memory is 16.1GB. [2023-11-24 23:50:48,421 INFO L158 Benchmark]: CDTParser took 1.36ms. Allocated memory is still 73.4MB. Free memory is still 49.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 23:50:48,422 INFO L158 Benchmark]: CACSL2BoogieTranslator took 281.05ms. Allocated memory is still 107.0MB. Free memory was 82.9MB in the beginning and 70.8MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-24 23:50:48,422 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.52ms. Allocated memory is still 107.0MB. Free memory was 70.8MB in the beginning and 69.2MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 23:50:48,423 INFO L158 Benchmark]: Boogie Preprocessor took 46.83ms. Allocated memory is still 107.0MB. Free memory was 69.2MB in the beginning and 67.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-24 23:50:48,423 INFO L158 Benchmark]: RCFGBuilder took 726.60ms. Allocated memory is still 107.0MB. Free memory was 67.5MB in the beginning and 80.4MB in the end (delta: -12.9MB). Peak memory consumption was 14.6MB. Max. memory is 16.1GB. [2023-11-24 23:50:48,424 INFO L158 Benchmark]: TraceAbstraction took 3728.36ms. Allocated memory was 107.0MB in the beginning and 130.0MB in the end (delta: 23.1MB). Free memory was 79.6MB in the beginning and 71.1MB in the end (delta: 8.5MB). Peak memory consumption was 32.8MB. Max. memory is 16.1GB. [2023-11-24 23:50:48,424 INFO L158 Benchmark]: Witness Printer took 110.67ms. Allocated memory is still 130.0MB. Free memory was 71.1MB in the beginning and 66.1MB in the end (delta: 5.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-24 23:50:48,426 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.36ms. Allocated memory is still 73.4MB. Free memory is still 49.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 281.05ms. Allocated memory is still 107.0MB. Free memory was 82.9MB in the beginning and 70.8MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 45.52ms. Allocated memory is still 107.0MB. Free memory was 70.8MB in the beginning and 69.2MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 46.83ms. Allocated memory is still 107.0MB. Free memory was 69.2MB in the beginning and 67.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 726.60ms. Allocated memory is still 107.0MB. Free memory was 67.5MB in the beginning and 80.4MB in the end (delta: -12.9MB). Peak memory consumption was 14.6MB. Max. memory is 16.1GB. * TraceAbstraction took 3728.36ms. Allocated memory was 107.0MB in the beginning and 130.0MB in the end (delta: 23.1MB). Free memory was 79.6MB in the beginning and 71.1MB in the end (delta: 8.5MB). Peak memory consumption was 32.8MB. Max. memory is 16.1GB. * Witness Printer took 110.67ms. Allocated memory is still 130.0MB. Free memory was 71.1MB in the beginning and 66.1MB in the end (delta: 5.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Missing case for function ~Pluszero~32 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Missing case for function ~Pluszero~32 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: QuantifierExpression (exists v_subst_1 : bv32 :: ~bvadd~32(~exponent_less_127~0, 127bv32) == ~bvlshr~32(~bvand~32(v_subst_1, 2139095040bv32), 23bv32) && ~fp~32(v_subst_1[31:31], v_subst_1[30:23], v_subst_1[22:0]) == ~Pluszero~32()) could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: QuantifierExpression (exists v_ULTIMATE.start_round_float_~#gf_u~0#1.base_14 : bv32 :: ~w~0 == #memory_int[v_ULTIMATE.start_round_float_~#gf_u~0#1.base_14][0bv32] && ~fp~32(#memory_int[v_ULTIMATE.start_round_float_~#gf_u~0#1.base_14][0bv32][31:31], #memory_int[v_ULTIMATE.start_round_float_~#gf_u~0#1.base_14][0bv32][30:23], #memory_int[v_ULTIMATE.start_round_float_~#gf_u~0#1.base_14][0bv32][22:0]) == ~Pluszero~32()) could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Missing case for function ~Pluszero~32 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: QuantifierExpression (exists v_ULTIMATE.start_round_float_~#gf_u~0#1.base_14 : bv32, v_ULTIMATE.start_round_float_~#sf_u~0#1.base_12 : bv32 :: (#memory_int[v_ULTIMATE.start_round_float_~#sf_u~0#1.base_12][0bv32] == #memory_int[v_ULTIMATE.start_round_float_~#gf_u~0#1.base_14][0bv32] && ~res~0 == ~fp~32(#memory_int[v_ULTIMATE.start_round_float_~#sf_u~0#1.base_12][0bv32][31:31], #memory_int[v_ULTIMATE.start_round_float_~#sf_u~0#1.base_12][0bv32][30:23], #memory_int[v_ULTIMATE.start_round_float_~#sf_u~0#1.base_12][0bv32][22:0])) && ~fp~32(#memory_int[v_ULTIMATE.start_round_float_~#sf_u~0#1.base_12][0bv32][31:31], #memory_int[v_ULTIMATE.start_round_float_~#sf_u~0#1.base_12][0bv32][30:23], #memory_int[v_ULTIMATE.start_round_float_~#sf_u~0#1.base_12][0bv32][22:0]) == ~Pluszero~32()) could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: QuantifierExpression (exists v_ULTIMATE.start_round_float_~#gf_u~0#1.base_14 : bv32, v_ULTIMATE.start_round_float_~#sf_u~0#1.base_12 : bv32 :: (#memory_int[v_ULTIMATE.start_round_float_~#sf_u~0#1.base_12][0bv32] == #memory_int[v_ULTIMATE.start_round_float_~#gf_u~0#1.base_14][0bv32] && ~fp~32(#memory_int[v_ULTIMATE.start_round_float_~#sf_u~0#1.base_12][0bv32][31:31], #memory_int[v_ULTIMATE.start_round_float_~#sf_u~0#1.base_12][0bv32][30:23], #memory_int[v_ULTIMATE.start_round_float_~#sf_u~0#1.base_12][0bv32][22:0]) == ~Pluszero~32()) && ~fp~32(#memory_int[v_ULTIMATE.start_round_float_~#sf_u~0#1.base_12][0bv32][31:31], #memory_int[v_ULTIMATE.start_round_float_~#sf_u~0#1.base_12][0bv32][30:23], #memory_int[v_ULTIMATE.start_round_float_~#sf_u~0#1.base_12][0bv32][22:0]) == ~x) could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short9 could not be translated * 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: 82]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.6s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 65 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 65 mSDsluCounter, 103 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 57 mSDsCounter, 12 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 105 IncrementalHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 12 mSolverCounterUnsat, 46 mSDtfsCounter, 105 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 56 GetRequests, 28 SyntacticMatches, 3 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=0, InterpolantAutomatonStates: 22, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 6 NumberOfFragments, 172 HoareAnnotationTreeSize, 3 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 149 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 50 NumberOfCodeBlocks, 50 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 46 ConstructedInterpolants, 20 QuantifiedInterpolants, 761 SizeOfPredicates, 26 NumberOfNonLiveVariables, 186 ConjunctsInSsa, 53 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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: 19]: Loop Invariant Derived loop invariant: null - InvariantResult [Line: 49]: Loop Invariant Derived loop invariant: null - InvariantResult [Line: 60]: Loop Invariant Derived loop invariant: null RESULT: Ultimate proved your program to be correct! [2023-11-24 23:50:48,454 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fe1a7b3-bb8d-40da-9d81-68652289dcab/bin/utaipan-verify-SwPr7d2a91/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