./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1270c.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b 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_c533732f-0da2-4c0b-8ed6-0e5fad6cbe44/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c533732f-0da2-4c0b-8ed6-0e5fad6cbe44/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c533732f-0da2-4c0b-8ed6-0e5fad6cbe44/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c533732f-0da2-4c0b-8ed6-0e5fad6cbe44/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1270c.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c533732f-0da2-4c0b-8ed6-0e5fad6cbe44/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c533732f-0da2-4c0b-8ed6-0e5fad6cbe44/bin/utaipan-I9t0OCRTmS --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 575af8feb7a46b015d4374541233953a0103acadad1e9c8ea0c454cb1ee3d7f4 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-19 07:20:27,238 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:20:27,240 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:20:27,284 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:20:27,285 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:20:27,286 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:20:27,289 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:20:27,293 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:20:27,296 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:20:27,298 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:20:27,300 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:20:27,303 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:20:27,304 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:20:27,311 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:20:27,313 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:20:27,314 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:20:27,316 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:20:27,319 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:20:27,320 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:20:27,322 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:20:27,328 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:20:27,329 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:20:27,330 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:20:27,332 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:20:27,337 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:20:27,341 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:20:27,342 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:20:27,343 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:20:27,344 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:20:27,345 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:20:27,346 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:20:27,347 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:20:27,349 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:20:27,350 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:20:27,351 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:20:27,351 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:20:27,352 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:20:27,352 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:20:27,352 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:20:27,353 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:20:27,354 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:20:27,355 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c533732f-0da2-4c0b-8ed6-0e5fad6cbe44/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-19 07:20:27,396 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:20:27,396 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:20:27,397 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:20:27,397 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:20:27,398 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:20:27,398 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:20:27,398 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:20:27,399 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:20:27,399 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:20:27,399 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 07:20:27,400 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:20:27,401 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:20:27,401 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 07:20:27,401 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 07:20:27,401 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:20:27,401 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 07:20:27,402 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 07:20:27,402 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 07:20:27,403 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:20:27,403 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 07:20:27,403 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 07:20:27,403 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 07:20:27,404 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:20:27,405 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:20:27,405 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:20:27,406 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:20:27,406 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 07:20:27,406 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:20:27,406 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:20:27,407 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:20:27,407 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:20:27,407 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:20:27,408 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:20:27,408 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:20:27,408 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 07:20:27,408 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:20:27,408 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:20:27,409 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 07:20:27,409 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 07:20:27,409 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:20:27,409 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:20:27,410 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c533732f-0da2-4c0b-8ed6-0e5fad6cbe44/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c533732f-0da2-4c0b-8ed6-0e5fad6cbe44/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 575af8feb7a46b015d4374541233953a0103acadad1e9c8ea0c454cb1ee3d7f4 [2022-11-19 07:20:27,695 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:20:27,723 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:20:27,725 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:20:27,727 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:20:27,727 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:20:27,729 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c533732f-0da2-4c0b-8ed6-0e5fad6cbe44/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/float-newlib/float_req_bl_1270c.c [2022-11-19 07:20:27,802 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c533732f-0da2-4c0b-8ed6-0e5fad6cbe44/bin/utaipan-I9t0OCRTmS/data/f59196dc3/e2553d2846b146e881ae74a0f945a13e/FLAG1bd0cb0be [2022-11-19 07:20:28,400 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:20:28,401 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c533732f-0da2-4c0b-8ed6-0e5fad6cbe44/sv-benchmarks/c/float-newlib/float_req_bl_1270c.c [2022-11-19 07:20:28,416 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c533732f-0da2-4c0b-8ed6-0e5fad6cbe44/bin/utaipan-I9t0OCRTmS/data/f59196dc3/e2553d2846b146e881ae74a0f945a13e/FLAG1bd0cb0be [2022-11-19 07:20:28,816 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c533732f-0da2-4c0b-8ed6-0e5fad6cbe44/bin/utaipan-I9t0OCRTmS/data/f59196dc3/e2553d2846b146e881ae74a0f945a13e [2022-11-19 07:20:28,818 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:20:28,820 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:20:28,822 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:20:28,822 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:20:28,826 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:20:28,827 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:20:28" (1/1) ... [2022-11-19 07:20:28,828 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c31384a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:20:28, skipping insertion in model container [2022-11-19 07:20:28,828 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:20:28" (1/1) ... [2022-11-19 07:20:28,836 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:20:28,858 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:20:29,124 WARN L234 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_c533732f-0da2-4c0b-8ed6-0e5fad6cbe44/sv-benchmarks/c/float-newlib/float_req_bl_1270c.c[4703,4716] [2022-11-19 07:20:29,128 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:20:29,136 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:20:29,184 WARN L234 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_c533732f-0da2-4c0b-8ed6-0e5fad6cbe44/sv-benchmarks/c/float-newlib/float_req_bl_1270c.c[4703,4716] [2022-11-19 07:20:29,185 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:20:29,199 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:20:29,199 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:20:29 WrapperNode [2022-11-19 07:20:29,199 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:20:29,200 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:20:29,201 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:20:29,201 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:20:29,209 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:20:29" (1/1) ... [2022-11-19 07:20:29,238 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:20:29" (1/1) ... [2022-11-19 07:20:29,268 INFO L138 Inliner]: procedures = 18, calls = 75, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 254 [2022-11-19 07:20:29,268 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:20:29,269 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:20:29,269 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:20:29,269 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:20:29,277 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:20:29" (1/1) ... [2022-11-19 07:20:29,277 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:20:29" (1/1) ... [2022-11-19 07:20:29,293 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:20:29" (1/1) ... [2022-11-19 07:20:29,293 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:20:29" (1/1) ... [2022-11-19 07:20:29,304 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:20:29" (1/1) ... [2022-11-19 07:20:29,312 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:20:29" (1/1) ... [2022-11-19 07:20:29,314 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:20:29" (1/1) ... [2022-11-19 07:20:29,316 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:20:29" (1/1) ... [2022-11-19 07:20:29,319 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:20:29,320 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:20:29,320 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:20:29,321 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:20:29,322 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:20:29" (1/1) ... [2022-11-19 07:20:29,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:20:29,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c533732f-0da2-4c0b-8ed6-0e5fad6cbe44/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:20:29,362 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c533732f-0da2-4c0b-8ed6-0e5fad6cbe44/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:20:29,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c533732f-0da2-4c0b-8ed6-0e5fad6cbe44/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:20:29,418 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:20:29,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 07:20:29,419 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 07:20:29,419 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2022-11-19 07:20:29,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 07:20:29,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2022-11-19 07:20:29,420 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:20:29,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:20:29,420 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 07:20:29,420 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 07:20:29,420 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_sqrtf [2022-11-19 07:20:29,420 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_sqrtf [2022-11-19 07:20:29,563 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:20:29,565 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:20:30,199 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:20:30,317 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:20:30,317 INFO L300 CfgBuilder]: Removed 34 assume(true) statements. [2022-11-19 07:20:30,320 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:20:30 BoogieIcfgContainer [2022-11-19 07:20:30,320 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:20:30,322 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:20:30,322 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:20:30,326 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:20:30,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:20:28" (1/3) ... [2022-11-19 07:20:30,327 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f10b292 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:20:30, skipping insertion in model container [2022-11-19 07:20:30,327 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:20:29" (2/3) ... [2022-11-19 07:20:30,327 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f10b292 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:20:30, skipping insertion in model container [2022-11-19 07:20:30,327 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:20:30" (3/3) ... [2022-11-19 07:20:30,329 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1270c.c [2022-11-19 07:20:30,348 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:20:30,348 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 07:20:30,399 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:20:30,406 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@bb602df, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:20:30,406 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 07:20:30,411 INFO L276 IsEmpty]: Start isEmpty. Operand has 72 states, 67 states have (on average 1.7164179104477613) internal successors, (115), 68 states have internal predecessors, (115), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-19 07:20:30,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-19 07:20:30,417 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:20:30,418 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:20:30,419 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:20:30,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:20:30,424 INFO L85 PathProgramCache]: Analyzing trace with hash -1555331817, now seen corresponding path program 1 times [2022-11-19 07:20:30,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:20:30,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711474131] [2022-11-19 07:20:30,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:20:30,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:20:30,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:20:30,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:20:30,639 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:20:30,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711474131] [2022-11-19 07:20:30,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711474131] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:20:30,641 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:20:30,641 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 07:20:30,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478667488] [2022-11-19 07:20:30,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:20:30,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-19 07:20:30,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:20:30,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-19 07:20:30,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 07:20:30,688 INFO L87 Difference]: Start difference. First operand has 72 states, 67 states have (on average 1.7164179104477613) internal successors, (115), 68 states have internal predecessors, (115), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:20:30,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:20:30,781 INFO L93 Difference]: Finished difference Result 143 states and 239 transitions. [2022-11-19 07:20:30,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-19 07:20:30,788 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-19 07:20:30,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:20:30,798 INFO L225 Difference]: With dead ends: 143 [2022-11-19 07:20:30,798 INFO L226 Difference]: Without dead ends: 70 [2022-11-19 07:20:30,801 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 07:20:30,805 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:20:30,806 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 75 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:20:30,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2022-11-19 07:20:30,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2022-11-19 07:20:30,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 66 states have (on average 1.2121212121212122) internal successors, (80), 66 states have internal predecessors, (80), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-19 07:20:30,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 84 transitions. [2022-11-19 07:20:30,844 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 84 transitions. Word has length 13 [2022-11-19 07:20:30,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:20:30,844 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 84 transitions. [2022-11-19 07:20:30,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:20:30,845 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 84 transitions. [2022-11-19 07:20:30,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-19 07:20:30,846 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:20:30,846 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:20:30,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 07:20:30,846 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:20:30,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:20:30,847 INFO L85 PathProgramCache]: Analyzing trace with hash -846460842, now seen corresponding path program 1 times [2022-11-19 07:20:30,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:20:30,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885254609] [2022-11-19 07:20:30,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:20:30,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:20:30,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 07:20:30,958 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-19 07:20:31,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 07:20:31,027 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-19 07:20:31,027 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-19 07:20:31,029 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-19 07:20:31,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 07:20:31,035 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-19 07:20:31,038 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-19 07:20:31,065 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 07:20:31 BoogieIcfgContainer [2022-11-19 07:20:31,065 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-19 07:20:31,066 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-19 07:20:31,066 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-19 07:20:31,066 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-19 07:20:31,067 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:20:30" (3/4) ... [2022-11-19 07:20:31,070 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-19 07:20:31,070 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-19 07:20:31,071 INFO L158 Benchmark]: Toolchain (without parser) took 2250.95ms. Allocated memory is still 127.9MB. Free memory was 96.2MB in the beginning and 91.0MB in the end (delta: 5.1MB). Peak memory consumption was 6.4MB. Max. memory is 16.1GB. [2022-11-19 07:20:31,072 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 90.2MB. Free memory was 49.0MB in the beginning and 49.0MB in the end (delta: 46.5kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 07:20:31,072 INFO L158 Benchmark]: CACSL2BoogieTranslator took 377.84ms. Allocated memory is still 127.9MB. Free memory was 95.9MB in the beginning and 100.1MB in the end (delta: -4.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-19 07:20:31,073 INFO L158 Benchmark]: Boogie Procedure Inliner took 68.12ms. Allocated memory is still 127.9MB. Free memory was 100.1MB in the beginning and 97.7MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 07:20:31,073 INFO L158 Benchmark]: Boogie Preprocessor took 50.58ms. Allocated memory is still 127.9MB. Free memory was 97.7MB in the beginning and 95.2MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 07:20:31,074 INFO L158 Benchmark]: RCFGBuilder took 999.82ms. Allocated memory is still 127.9MB. Free memory was 95.2MB in the beginning and 88.9MB in the end (delta: 6.3MB). Peak memory consumption was 30.3MB. Max. memory is 16.1GB. [2022-11-19 07:20:31,074 INFO L158 Benchmark]: TraceAbstraction took 743.51ms. Allocated memory is still 127.9MB. Free memory was 88.3MB in the beginning and 91.0MB in the end (delta: -2.7MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 07:20:31,075 INFO L158 Benchmark]: Witness Printer took 4.40ms. Allocated memory is still 127.9MB. Free memory is still 91.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 07:20:31,078 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 90.2MB. Free memory was 49.0MB in the beginning and 49.0MB in the end (delta: 46.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 377.84ms. Allocated memory is still 127.9MB. Free memory was 95.9MB in the beginning and 100.1MB in the end (delta: -4.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 68.12ms. Allocated memory is still 127.9MB. Free memory was 100.1MB in the beginning and 97.7MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 50.58ms. Allocated memory is still 127.9MB. Free memory was 97.7MB in the beginning and 95.2MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 999.82ms. Allocated memory is still 127.9MB. Free memory was 95.2MB in the beginning and 88.9MB in the end (delta: 6.3MB). Peak memory consumption was 30.3MB. Max. memory is 16.1GB. * TraceAbstraction took 743.51ms. Allocated memory is still 127.9MB. Free memory was 88.3MB in the beginning and 91.0MB in the end (delta: -2.7MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.40ms. Allocated memory is still 127.9MB. Free memory is still 91.0MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 237]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryArithmeticFLOAToperation at line 120, overapproximation of bitwiseAnd at line 220. Possible FailurePath: [L14] static const float one_sqrt = 1.0, tiny_sqrt = 1.0e-30; [L231] float x = __VERIFIER_nondet_float(); [L232] float y = 1.0f / 0.0f; [L234] CALL, EXPR __ieee754_hypotf(x, y) [L84] float a = x, b = y, t1, t2, y1, y2, w; [L85] __int32_t j, k, ha, hb; VAL [\old(x)=8589934611, \old(y)=8589934611, a=8589934611, b=8589934611, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=8589934611, y=8589934611] [L88] ieee_float_shape_type gf_u; [L89] gf_u.value = (x) [L90] EXPR gf_u.word [L90] (ha) = gf_u.word [L92] ha &= 0x7fffffffL VAL [\old(x)=8589934611, \old(y)=8589934611, a=8589934611, b=8589934611, ha=6, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=8589934611, y=8589934611] [L94] ieee_float_shape_type gf_u; [L95] gf_u.value = (y) [L96] EXPR gf_u.word [L96] (hb) = gf_u.word [L98] hb &= 0x7fffffffL [L99] COND TRUE hb > ha [L100] a = y [L101] b = x [L102] j = ha [L103] ha = hb [L104] hb = j VAL [\old(x)=8589934611, \old(y)=8589934611, a=8589934611, b=8589934611, ha=251658247, hb=6, j=6, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=8589934611, y=8589934611] [L110] ieee_float_shape_type sf_u; [L111] sf_u.word = (ha) [L112] EXPR sf_u.value [L112] (a) = sf_u.value [L115] ieee_float_shape_type sf_u; [L116] sf_u.word = (hb) [L117] EXPR sf_u.value [L117] (b) = sf_u.value [L119] COND TRUE (ha - hb) > 0xf000000L [L120] return a + b; VAL [\old(x)=8589934611, \old(y)=8589934611, a=8589934612, b=8589934613, ha=251658247, hb=6, j=6, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=8589934611, y=8589934611] [L234] RET, EXPR __ieee754_hypotf(x, y) [L234] float res = __ieee754_hypotf(x, y); [L236] CALL, EXPR isinf_float(res) [L214] __int32_t ix; VAL [\old(x)=8589934610, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=8589934610] [L216] ieee_float_shape_type gf_u; [L217] gf_u.value = (x) [L218] EXPR gf_u.word [L218] (ix) = gf_u.word [L220] ix &= 0x7fffffff [L221] return ((ix) == 0x7f800000L); [L236] RET, EXPR isinf_float(res) [L236] COND TRUE !isinf_float(res) [L237] reach_error() VAL [one_sqrt=1, res=8589934610, tiny_sqrt=1/1000000000000000000000000000000, x=8589934611, y=8589934611] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 72 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, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 75 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 11 IncrementalHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 75 mSDtfsCounter, 11 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=72occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 31 NumberOfCodeBlocks, 31 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 12 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-19 07:20:31,109 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c533732f-0da2-4c0b-8ed6-0e5fad6cbe44/bin/utaipan-I9t0OCRTmS/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_c533732f-0da2-4c0b-8ed6-0e5fad6cbe44/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c533732f-0da2-4c0b-8ed6-0e5fad6cbe44/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c533732f-0da2-4c0b-8ed6-0e5fad6cbe44/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c533732f-0da2-4c0b-8ed6-0e5fad6cbe44/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1270c.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c533732f-0da2-4c0b-8ed6-0e5fad6cbe44/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c533732f-0da2-4c0b-8ed6-0e5fad6cbe44/bin/utaipan-I9t0OCRTmS --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 575af8feb7a46b015d4374541233953a0103acadad1e9c8ea0c454cb1ee3d7f4 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-19 07:20:33,468 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:20:33,471 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:20:33,509 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:20:33,509 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:20:33,513 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:20:33,515 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:20:33,520 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:20:33,522 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:20:33,530 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:20:33,531 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:20:33,532 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:20:33,532 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:20:33,533 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:20:33,534 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:20:33,535 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:20:33,536 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:20:33,537 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:20:33,541 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:20:33,549 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:20:33,555 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:20:33,557 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:20:33,559 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:20:33,561 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:20:33,569 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:20:33,569 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:20:33,570 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:20:33,571 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:20:33,572 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:20:33,573 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:20:33,573 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:20:33,574 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:20:33,576 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:20:33,576 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:20:33,577 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:20:33,578 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:20:33,579 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:20:33,579 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:20:33,579 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:20:33,581 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:20:33,582 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:20:33,587 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c533732f-0da2-4c0b-8ed6-0e5fad6cbe44/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2022-11-19 07:20:33,631 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:20:33,631 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:20:33,633 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:20:33,633 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:20:33,634 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:20:33,634 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:20:33,634 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:20:33,635 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:20:33,635 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:20:33,635 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:20:33,636 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:20:33,636 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:20:33,638 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:20:33,638 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 07:20:33,638 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 07:20:33,639 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:20:33,639 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:20:33,639 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:20:33,639 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:20:33,639 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-19 07:20:33,640 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-19 07:20:33,640 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-19 07:20:33,640 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 07:20:33,640 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:20:33,641 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:20:33,641 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:20:33,641 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:20:33,641 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-19 07:20:33,642 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:20:33,642 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:20:33,642 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:20:33,642 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:20:33,643 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:20:33,643 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-19 07:20:33,644 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-19 07:20:33,644 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:20:33,644 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:20:33,645 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-19 07:20:33,645 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c533732f-0da2-4c0b-8ed6-0e5fad6cbe44/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c533732f-0da2-4c0b-8ed6-0e5fad6cbe44/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 575af8feb7a46b015d4374541233953a0103acadad1e9c8ea0c454cb1ee3d7f4 [2022-11-19 07:20:34,055 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:20:34,078 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:20:34,082 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:20:34,083 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:20:34,084 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:20:34,085 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c533732f-0da2-4c0b-8ed6-0e5fad6cbe44/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/float-newlib/float_req_bl_1270c.c [2022-11-19 07:20:34,163 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c533732f-0da2-4c0b-8ed6-0e5fad6cbe44/bin/utaipan-I9t0OCRTmS/data/bf841884c/9cb3b73c2aa748d8acc5800985a57f2f/FLAGfe3ec2e72 [2022-11-19 07:20:34,620 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:20:34,621 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c533732f-0da2-4c0b-8ed6-0e5fad6cbe44/sv-benchmarks/c/float-newlib/float_req_bl_1270c.c [2022-11-19 07:20:34,632 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c533732f-0da2-4c0b-8ed6-0e5fad6cbe44/bin/utaipan-I9t0OCRTmS/data/bf841884c/9cb3b73c2aa748d8acc5800985a57f2f/FLAGfe3ec2e72 [2022-11-19 07:20:35,003 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c533732f-0da2-4c0b-8ed6-0e5fad6cbe44/bin/utaipan-I9t0OCRTmS/data/bf841884c/9cb3b73c2aa748d8acc5800985a57f2f [2022-11-19 07:20:35,004 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:20:35,006 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:20:35,007 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:20:35,007 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:20:35,014 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:20:35,016 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:20:35" (1/1) ... [2022-11-19 07:20:35,017 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e5edd0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:20:35, skipping insertion in model container [2022-11-19 07:20:35,017 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:20:35" (1/1) ... [2022-11-19 07:20:35,025 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:20:35,066 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:20:35,240 WARN L234 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_c533732f-0da2-4c0b-8ed6-0e5fad6cbe44/sv-benchmarks/c/float-newlib/float_req_bl_1270c.c[4703,4716] [2022-11-19 07:20:35,279 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:20:35,290 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:20:35,345 WARN L234 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_c533732f-0da2-4c0b-8ed6-0e5fad6cbe44/sv-benchmarks/c/float-newlib/float_req_bl_1270c.c[4703,4716] [2022-11-19 07:20:35,346 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:20:35,361 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:20:35,361 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:20:35 WrapperNode [2022-11-19 07:20:35,361 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:20:35,362 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:20:35,363 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:20:35,363 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:20:35,370 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:20:35" (1/1) ... [2022-11-19 07:20:35,382 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:20:35" (1/1) ... [2022-11-19 07:20:35,413 INFO L138 Inliner]: procedures = 21, calls = 75, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 254 [2022-11-19 07:20:35,419 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:20:35,420 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:20:35,421 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:20:35,422 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:20:35,431 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:20:35" (1/1) ... [2022-11-19 07:20:35,431 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:20:35" (1/1) ... [2022-11-19 07:20:35,449 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:20:35" (1/1) ... [2022-11-19 07:20:35,460 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:20:35" (1/1) ... [2022-11-19 07:20:35,473 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:20:35" (1/1) ... [2022-11-19 07:20:35,493 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:20:35" (1/1) ... [2022-11-19 07:20:35,498 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:20:35" (1/1) ... [2022-11-19 07:20:35,511 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:20:35" (1/1) ... [2022-11-19 07:20:35,515 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:20:35,515 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:20:35,516 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:20:35,516 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:20:35,517 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:20:35" (1/1) ... [2022-11-19 07:20:35,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:20:35,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c533732f-0da2-4c0b-8ed6-0e5fad6cbe44/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:20:35,556 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c533732f-0da2-4c0b-8ed6-0e5fad6cbe44/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:20:35,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c533732f-0da2-4c0b-8ed6-0e5fad6cbe44/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:20:35,601 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:20:35,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-19 07:20:35,602 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 07:20:35,602 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2022-11-19 07:20:35,602 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-19 07:20:35,602 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:20:35,602 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:20:35,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2022-11-19 07:20:35,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-19 07:20:35,603 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 07:20:35,603 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_sqrtf [2022-11-19 07:20:35,603 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_sqrtf [2022-11-19 07:20:35,758 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:20:35,760 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:20:38,245 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:20:38,252 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:20:38,252 INFO L300 CfgBuilder]: Removed 34 assume(true) statements. [2022-11-19 07:20:38,255 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:20:38 BoogieIcfgContainer [2022-11-19 07:20:38,255 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:20:38,257 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:20:38,258 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:20:38,261 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:20:38,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:20:35" (1/3) ... [2022-11-19 07:20:38,262 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3680a40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:20:38, skipping insertion in model container [2022-11-19 07:20:38,262 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:20:35" (2/3) ... [2022-11-19 07:20:38,263 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3680a40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:20:38, skipping insertion in model container [2022-11-19 07:20:38,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:20:38" (3/3) ... [2022-11-19 07:20:38,264 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1270c.c [2022-11-19 07:20:38,284 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:20:38,285 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 07:20:38,366 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:20:38,375 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@35510cf3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:20:38,375 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 07:20:38,382 INFO L276 IsEmpty]: Start isEmpty. Operand has 89 states, 84 states have (on average 1.6904761904761905) internal successors, (142), 85 states have internal predecessors, (142), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-19 07:20:38,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-19 07:20:38,392 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:20:38,392 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:20:38,415 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:20:38,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:20:38,420 INFO L85 PathProgramCache]: Analyzing trace with hash -1724151004, now seen corresponding path program 1 times [2022-11-19 07:20:38,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:20:38,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [92518920] [2022-11-19 07:20:38,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:20:38,434 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:20:38,435 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c533732f-0da2-4c0b-8ed6-0e5fad6cbe44/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:20:38,446 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c533732f-0da2-4c0b-8ed6-0e5fad6cbe44/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:20:38,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c533732f-0da2-4c0b-8ed6-0e5fad6cbe44/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-19 07:20:38,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:20:38,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-19 07:20:38,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:20:38,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:20:38,708 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:20:38,709 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:20:38,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [92518920] [2022-11-19 07:20:38,711 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [92518920] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:20:38,711 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:20:38,712 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 07:20:38,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638628326] [2022-11-19 07:20:38,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:20:38,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-19 07:20:38,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:20:38,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-19 07:20:38,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 07:20:38,769 INFO L87 Difference]: Start difference. First operand has 89 states, 84 states have (on average 1.6904761904761905) internal successors, (142), 85 states have internal predecessors, (142), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:20:38,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:20:38,821 INFO L93 Difference]: Finished difference Result 176 states and 292 transitions. [2022-11-19 07:20:38,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-19 07:20:38,823 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-19 07:20:38,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:20:38,840 INFO L225 Difference]: With dead ends: 176 [2022-11-19 07:20:38,840 INFO L226 Difference]: Without dead ends: 86 [2022-11-19 07:20:38,845 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 07:20:38,851 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:20:38,854 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:20:38,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2022-11-19 07:20:38,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2022-11-19 07:20:38,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 82 states have (on average 1.2682926829268293) internal successors, (104), 82 states have internal predecessors, (104), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-19 07:20:38,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 108 transitions. [2022-11-19 07:20:38,903 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 108 transitions. Word has length 16 [2022-11-19 07:20:38,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:20:38,903 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 108 transitions. [2022-11-19 07:20:38,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:20:38,904 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 108 transitions. [2022-11-19 07:20:38,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-19 07:20:38,905 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:20:38,905 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:20:38,917 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c533732f-0da2-4c0b-8ed6-0e5fad6cbe44/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-19 07:20:39,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c533732f-0da2-4c0b-8ed6-0e5fad6cbe44/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:20:39,107 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:20:39,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:20:39,108 INFO L85 PathProgramCache]: Analyzing trace with hash -927967701, now seen corresponding path program 1 times [2022-11-19 07:20:39,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:20:39,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1817171617] [2022-11-19 07:20:39,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:20:39,110 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:20:39,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c533732f-0da2-4c0b-8ed6-0e5fad6cbe44/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:20:39,112 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c533732f-0da2-4c0b-8ed6-0e5fad6cbe44/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:20:39,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c533732f-0da2-4c0b-8ed6-0e5fad6cbe44/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-19 07:20:39,331 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c533732f-0da2-4c0b-8ed6-0e5fad6cbe44/bin/utaipan-I9t0OCRTmS/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 139 [2022-11-19 07:20:39,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c533732f-0da2-4c0b-8ed6-0e5fad6cbe44/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:20:39,531 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c533732f-0da2-4c0b-8ed6-0e5fad6cbe44/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3) with exit command (exit)) Received EOF on stdin. No stderr output. at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.(TraceCheck.java:236) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheck.(InterpolatingTraceCheck.java:91) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:132) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c533732f-0da2-4c0b-8ed6-0e5fad6cbe44/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3) with exit command (exit)) Received EOF on stdin. No stderr output. at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:243) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.AnnotateAndAsserter.buildAnnotatedSsaAndAssertTerms(AnnotateAndAsserter.java:130) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.checkTrace(TraceCheck.java:317) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.(TraceCheck.java:215) ... 30 more Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1465) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:658) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:239) ... 37 more [2022-11-19 07:20:39,534 INFO L158 Benchmark]: Toolchain (without parser) took 4527.68ms. Allocated memory was 62.9MB in the beginning and 83.9MB in the end (delta: 21.0MB). Free memory was 43.1MB in the beginning and 41.6MB in the end (delta: 1.5MB). Peak memory consumption was 23.6MB. Max. memory is 16.1GB. [2022-11-19 07:20:39,534 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 62.9MB. Free memory was 43.6MB in the beginning and 43.5MB in the end (delta: 56.5kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 07:20:39,535 INFO L158 Benchmark]: CACSL2BoogieTranslator took 354.84ms. Allocated memory is still 62.9MB. Free memory was 42.8MB in the beginning and 44.0MB in the end (delta: -1.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-19 07:20:39,535 INFO L158 Benchmark]: Boogie Procedure Inliner took 56.88ms. Allocated memory is still 62.9MB. Free memory was 43.8MB in the beginning and 41.4MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 07:20:39,536 INFO L158 Benchmark]: Boogie Preprocessor took 94.36ms. Allocated memory is still 62.9MB. Free memory was 41.4MB in the beginning and 38.9MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 07:20:39,536 INFO L158 Benchmark]: RCFGBuilder took 2739.77ms. Allocated memory is still 62.9MB. Free memory was 38.9MB in the beginning and 31.0MB in the end (delta: 7.9MB). Peak memory consumption was 17.4MB. Max. memory is 16.1GB. [2022-11-19 07:20:39,537 INFO L158 Benchmark]: TraceAbstraction took 1275.55ms. Allocated memory was 62.9MB in the beginning and 83.9MB in the end (delta: 21.0MB). Free memory was 30.5MB in the beginning and 41.6MB in the end (delta: -11.1MB). Peak memory consumption was 9.3MB. Max. memory is 16.1GB. [2022-11-19 07:20:39,540 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 62.9MB. Free memory was 43.6MB in the beginning and 43.5MB in the end (delta: 56.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 354.84ms. Allocated memory is still 62.9MB. Free memory was 42.8MB in the beginning and 44.0MB in the end (delta: -1.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 56.88ms. Allocated memory is still 62.9MB. Free memory was 43.8MB in the beginning and 41.4MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 94.36ms. Allocated memory is still 62.9MB. Free memory was 41.4MB in the beginning and 38.9MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 2739.77ms. Allocated memory is still 62.9MB. Free memory was 38.9MB in the beginning and 31.0MB in the end (delta: 7.9MB). Peak memory consumption was 17.4MB. Max. memory is 16.1GB. * TraceAbstraction took 1275.55ms. Allocated memory was 62.9MB in the beginning and 83.9MB in the end (delta: 21.0MB). Free memory was 30.5MB in the beginning and 41.6MB in the end (delta: -11.1MB). Peak memory consumption was 9.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c533732f-0da2-4c0b-8ed6-0e5fad6cbe44/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3) with exit command (exit)) Received EOF on stdin. No stderr output. de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c533732f-0da2-4c0b-8ed6-0e5fad6cbe44/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3) with exit command (exit)) Received EOF on stdin. No stderr output.: de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.(TraceCheck.java:236) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-11-19 07:20:39,578 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c533732f-0da2-4c0b-8ed6-0e5fad6cbe44/bin/utaipan-I9t0OCRTmS/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: ERROR: ExceptionOrErrorResult: AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c533732f-0da2-4c0b-8ed6-0e5fad6cbe44/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3) with exit command (exit)) Received EOF on stdin. No stderr output.