./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_0620b.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a 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_ef452787-2dbb-42a5-8548-105947cd7431/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef452787-2dbb-42a5-8548-105947cd7431/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef452787-2dbb-42a5-8548-105947cd7431/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef452787-2dbb-42a5-8548-105947cd7431/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0620b.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef452787-2dbb-42a5-8548-105947cd7431/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef452787-2dbb-42a5-8548-105947cd7431/bin/utaipan-7li7fVZpFI --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 075a76806290abf75c2d2bbc3aed8400bd808fbae1a9b71a2d432aac31dd29da --- 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-5e519f3 [2022-11-03 01:36:41,171 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 01:36:41,174 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 01:36:41,224 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 01:36:41,224 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 01:36:41,228 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 01:36:41,231 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 01:36:41,235 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 01:36:41,238 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 01:36:41,245 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 01:36:41,246 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 01:36:41,248 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 01:36:41,249 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 01:36:41,251 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 01:36:41,253 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 01:36:41,255 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 01:36:41,257 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 01:36:41,258 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 01:36:41,260 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 01:36:41,267 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 01:36:41,270 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 01:36:41,271 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 01:36:41,274 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 01:36:41,275 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 01:36:41,281 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 01:36:41,285 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 01:36:41,285 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 01:36:41,286 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 01:36:41,288 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 01:36:41,289 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 01:36:41,289 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 01:36:41,290 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 01:36:41,293 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 01:36:41,295 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 01:36:41,296 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 01:36:41,296 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 01:36:41,297 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 01:36:41,297 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 01:36:41,298 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 01:36:41,299 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 01:36:41,299 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 01:36:41,300 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef452787-2dbb-42a5-8548-105947cd7431/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-03 01:36:41,338 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 01:36:41,339 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 01:36:41,339 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 01:36:41,340 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 01:36:41,340 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 01:36:41,341 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 01:36:41,341 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 01:36:41,341 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 01:36:41,341 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 01:36:41,342 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 01:36:41,343 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 01:36:41,343 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 01:36:41,343 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 01:36:41,343 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 01:36:41,344 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 01:36:41,344 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 01:36:41,344 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 01:36:41,344 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 01:36:41,345 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 01:36:41,345 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 01:36:41,345 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 01:36:41,346 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 01:36:41,346 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 01:36:41,347 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 01:36:41,348 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 01:36:41,348 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 01:36:41,348 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 01:36:41,348 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 01:36:41,348 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 01:36:41,349 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 01:36:41,349 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 01:36:41,349 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 01:36:41,350 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:36:41,350 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 01:36:41,350 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 01:36:41,350 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 01:36:41,350 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 01:36:41,351 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 01:36:41,351 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 01:36:41,351 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 01:36:41,351 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 01:36:41,352 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_ef452787-2dbb-42a5-8548-105947cd7431/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef452787-2dbb-42a5-8548-105947cd7431/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 075a76806290abf75c2d2bbc3aed8400bd808fbae1a9b71a2d432aac31dd29da [2022-11-03 01:36:41,659 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 01:36:41,695 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 01:36:41,698 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 01:36:41,699 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 01:36:41,700 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 01:36:41,701 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef452787-2dbb-42a5-8548-105947cd7431/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/float-newlib/float_req_bl_0620b.c [2022-11-03 01:36:41,768 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef452787-2dbb-42a5-8548-105947cd7431/bin/utaipan-7li7fVZpFI/data/83e41d054/1d451ad4dec34ef6a401b816194e4c84/FLAG30b78ca05 [2022-11-03 01:36:42,309 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 01:36:42,313 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef452787-2dbb-42a5-8548-105947cd7431/sv-benchmarks/c/float-newlib/float_req_bl_0620b.c [2022-11-03 01:36:42,322 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef452787-2dbb-42a5-8548-105947cd7431/bin/utaipan-7li7fVZpFI/data/83e41d054/1d451ad4dec34ef6a401b816194e4c84/FLAG30b78ca05 [2022-11-03 01:36:42,644 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef452787-2dbb-42a5-8548-105947cd7431/bin/utaipan-7li7fVZpFI/data/83e41d054/1d451ad4dec34ef6a401b816194e4c84 [2022-11-03 01:36:42,652 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 01:36:42,655 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 01:36:42,658 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 01:36:42,658 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 01:36:42,662 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 01:36:42,663 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:36:42" (1/1) ... [2022-11-03 01:36:42,664 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f2ea7f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:36:42, skipping insertion in model container [2022-11-03 01:36:42,664 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:36:42" (1/1) ... [2022-11-03 01:36:42,672 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 01:36:42,704 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 01:36:42,917 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef452787-2dbb-42a5-8548-105947cd7431/sv-benchmarks/c/float-newlib/float_req_bl_0620b.c[3330,3343] [2022-11-03 01:36:42,920 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:36:42,930 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 01:36:42,962 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef452787-2dbb-42a5-8548-105947cd7431/sv-benchmarks/c/float-newlib/float_req_bl_0620b.c[3330,3343] [2022-11-03 01:36:42,963 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:36:42,980 INFO L208 MainTranslator]: Completed translation [2022-11-03 01:36:42,980 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:36:42 WrapperNode [2022-11-03 01:36:42,981 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 01:36:42,982 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 01:36:42,982 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 01:36:42,982 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 01:36:42,998 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:36:42" (1/1) ... [2022-11-03 01:36:43,012 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:36:42" (1/1) ... [2022-11-03 01:36:43,041 INFO L138 Inliner]: procedures = 19, calls = 65, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 198 [2022-11-03 01:36:43,041 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 01:36:43,042 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 01:36:43,042 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 01:36:43,043 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 01:36:43,053 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:36:42" (1/1) ... [2022-11-03 01:36:43,054 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:36:42" (1/1) ... [2022-11-03 01:36:43,075 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:36:42" (1/1) ... [2022-11-03 01:36:43,075 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:36:42" (1/1) ... [2022-11-03 01:36:43,086 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:36:42" (1/1) ... [2022-11-03 01:36:43,106 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:36:42" (1/1) ... [2022-11-03 01:36:43,107 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:36:42" (1/1) ... [2022-11-03 01:36:43,109 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:36:42" (1/1) ... [2022-11-03 01:36:43,112 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 01:36:43,126 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 01:36:43,127 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 01:36:43,127 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 01:36:43,128 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:36:42" (1/1) ... [2022-11-03 01:36:43,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:36:43,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef452787-2dbb-42a5-8548-105947cd7431/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:36:43,166 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef452787-2dbb-42a5-8548-105947cd7431/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 01:36:43,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef452787-2dbb-42a5-8548-105947cd7431/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 01:36:43,208 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 01:36:43,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 01:36:43,208 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 01:36:43,209 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2022-11-03 01:36:43,209 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 01:36:43,209 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2022-11-03 01:36:43,209 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 01:36:43,209 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 01:36:43,209 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 01:36:43,210 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2022-11-03 01:36:43,210 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 01:36:43,359 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 01:36:43,361 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 01:36:43,678 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 01:36:43,743 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 01:36:43,744 INFO L300 CfgBuilder]: Removed 8 assume(true) statements. [2022-11-03 01:36:43,746 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:36:43 BoogieIcfgContainer [2022-11-03 01:36:43,746 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 01:36:43,748 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 01:36:43,749 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 01:36:43,752 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 01:36:43,753 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 01:36:42" (1/3) ... [2022-11-03 01:36:43,753 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a3cbece and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:36:43, skipping insertion in model container [2022-11-03 01:36:43,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:36:42" (2/3) ... [2022-11-03 01:36:43,754 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a3cbece and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:36:43, skipping insertion in model container [2022-11-03 01:36:43,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:36:43" (3/3) ... [2022-11-03 01:36:43,756 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_0620b.c [2022-11-03 01:36:43,775 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 01:36:43,775 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 01:36:43,825 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 01:36:43,832 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;@66103491, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 01:36:43,832 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 01:36:43,836 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 24 states have internal predecessors, (38), 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) [2022-11-03 01:36:43,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-03 01:36:43,843 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:36:43,844 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:36:43,845 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:36:43,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:36:43,850 INFO L85 PathProgramCache]: Analyzing trace with hash -851122785, now seen corresponding path program 1 times [2022-11-03 01:36:43,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:36:43,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105596287] [2022-11-03 01:36:43,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:36:43,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:36:44,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:36:44,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:36:44,092 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:36:44,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105596287] [2022-11-03 01:36:44,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105596287] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:36:44,094 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:36:44,094 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 01:36:44,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220073120] [2022-11-03 01:36:44,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:36:44,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-03 01:36:44,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:36:44,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-03 01:36:44,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 01:36:44,158 INFO L87 Difference]: Start difference. First operand has 25 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 24 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:36:44,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:36:44,226 INFO L93 Difference]: Finished difference Result 49 states and 75 transitions. [2022-11-03 01:36:44,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-03 01:36:44,231 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-03 01:36:44,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:36:44,240 INFO L225 Difference]: With dead ends: 49 [2022-11-03 01:36:44,240 INFO L226 Difference]: Without dead ends: 23 [2022-11-03 01:36:44,243 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 [2022-11-03 01:36:44,249 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:36:44,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 23 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 01:36:44,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-11-03 01:36:44,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-11-03 01:36:44,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 22 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:36:44,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2022-11-03 01:36:44,288 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 8 [2022-11-03 01:36:44,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:36:44,289 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2022-11-03 01:36:44,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:36:44,290 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2022-11-03 01:36:44,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-03 01:36:44,291 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:36:44,292 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:36:44,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 01:36:44,292 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:36:44,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:36:44,294 INFO L85 PathProgramCache]: Analyzing trace with hash 398666666, now seen corresponding path program 1 times [2022-11-03 01:36:44,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:36:44,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621608001] [2022-11-03 01:36:44,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:36:44,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:36:44,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 01:36:44,398 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-03 01:36:44,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 01:36:44,448 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-03 01:36:44,448 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-03 01:36:44,450 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-03 01:36:44,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 01:36:44,455 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-03 01:36:44,459 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-03 01:36:44,486 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 01:36:44 BoogieIcfgContainer [2022-11-03 01:36:44,486 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-03 01:36:44,487 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-03 01:36:44,487 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-03 01:36:44,487 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-03 01:36:44,488 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:36:43" (3/4) ... [2022-11-03 01:36:44,490 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-03 01:36:44,491 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-03 01:36:44,492 INFO L158 Benchmark]: Toolchain (without parser) took 1836.36ms. Allocated memory is still 115.3MB. Free memory was 79.3MB in the beginning and 75.2MB in the end (delta: 4.0MB). Peak memory consumption was 761.6kB. Max. memory is 16.1GB. [2022-11-03 01:36:44,493 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 115.3MB. Free memory is still 95.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 01:36:44,495 INFO L158 Benchmark]: CACSL2BoogieTranslator took 322.86ms. Allocated memory is still 115.3MB. Free memory was 79.1MB in the beginning and 89.5MB in the end (delta: -10.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-03 01:36:44,500 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.97ms. Allocated memory is still 115.3MB. Free memory was 89.5MB in the beginning and 87.0MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 01:36:44,503 INFO L158 Benchmark]: Boogie Preprocessor took 83.54ms. Allocated memory is still 115.3MB. Free memory was 87.0MB in the beginning and 85.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 01:36:44,504 INFO L158 Benchmark]: RCFGBuilder took 620.13ms. Allocated memory is still 115.3MB. Free memory was 85.0MB in the beginning and 64.3MB in the end (delta: 20.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-11-03 01:36:44,505 INFO L158 Benchmark]: TraceAbstraction took 737.71ms. Allocated memory is still 115.3MB. Free memory was 63.6MB in the beginning and 75.8MB in the end (delta: -12.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 01:36:44,505 INFO L158 Benchmark]: Witness Printer took 4.39ms. Allocated memory is still 115.3MB. Free memory was 75.8MB in the beginning and 75.2MB in the end (delta: 514.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 01:36:44,509 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 115.3MB. Free memory is still 95.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 322.86ms. Allocated memory is still 115.3MB. Free memory was 79.1MB in the beginning and 89.5MB in the end (delta: -10.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 59.97ms. Allocated memory is still 115.3MB. Free memory was 89.5MB in the beginning and 87.0MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 83.54ms. Allocated memory is still 115.3MB. Free memory was 87.0MB in the beginning and 85.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 620.13ms. Allocated memory is still 115.3MB. Free memory was 85.0MB in the beginning and 64.3MB in the end (delta: 20.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 737.71ms. Allocated memory is still 115.3MB. Free memory was 63.6MB in the beginning and 75.8MB in the end (delta: -12.1MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.39ms. Allocated memory is still 115.3MB. Free memory was 75.8MB in the beginning and 75.2MB in the end (delta: 514.6kB). 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: 144]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 143, overapproximation of someUnaryDOUBLEoperation at line 46, overapproximation of bitwiseAnd at line 64, overapproximation of someUnaryFLOAToperation at line 139, overapproximation of someBinaryArithmeticFLOAToperation at line 67. Possible FailurePath: [L14] static const float huge_floor = 1.0e30; [L31-L36] static const float atanhi_atan[] = { 4.6364760399e-01, 7.8539812565e-01, 9.8279368877e-01, 1.5707962513e+00, }; [L38-L43] static const float atanlo_atan[] = { 5.0121582440e-09, 3.7748947079e-08, 3.4473217170e-08, 7.5497894159e-08, }; [L45-L49] static const float aT_atan[] = { 3.3333334327e-01, -2.0000000298e-01, 1.4285714924e-01, -1.1111110449e-01, 9.0908870101e-02, -7.6918758452e-02, 6.6610731184e-02, -5.8335702866e-02, 4.9768779427e-02, -3.6531571299e-02, 1.6285819933e-02, }; [L51-L53] static const float one_atan = 1.0, huge_atan = 1.0e30, pi_o_4 = 7.8539818525e-01, pi_o_2 = 1.5707963705e+00, pi = 3.1415927410e+00; [L139] float x = -0.0f; [L140] CALL, EXPR atan_float(x) [L56] float w, s1, s2, z; [L57] __int32_t ix, hx, id; VAL [\old(x)=1000000000000000000000000000005, aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, x=1000000000000000000000000000005] [L60] ieee_float_shape_type gf_u; [L61] gf_u.value = (x) [L62] EXPR gf_u.word [L62] (hx) = gf_u.word [L64] ix = hx & 0x7fffffff VAL [\old(x)=1000000000000000000000000000005, aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, hx=-1, ix=2139095041, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, x=1000000000000000000000000000005] [L65] COND TRUE ix >= 0x50800000 [L66] COND TRUE ((ix) > 0x7f800000L) [L67] return x + x; VAL [\old(x)=1000000000000000000000000000005, aT_atan={6:0}, atanhi_atan={4:0}, atanhi_atan[3]=1000000000000000000000000000006, atanhi_atan[3]=1000000000000000000000000000001, atanlo_atan={5:0}, atanlo_atan[3]=1000000000000000000000000000002, atanlo_atan[3]=1000000000000000000000000000003, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, hx=-1, ix=2139095041, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, x=1000000000000000000000000000005] [L140] RET, EXPR atan_float(x) [L140] float res = atan_float(x); [L143] EXPR res == -0.0f && __signbit_float(res) == 1 VAL [aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, res=1000000000000000000000000000004, res == -0.0f && __signbit_float(res) == 1=0, x=1000000000000000000000000000005] [L143] COND TRUE !(res == -0.0f && __signbit_float(res) == 1) [L144] reach_error() VAL [aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, res=1000000000000000000000000000004, x=1000000000000000000000000000005] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, 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, 23 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6 IncrementalHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 23 mSDtfsCounter, 6 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=25occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 7 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-03 01:36:44,566 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef452787-2dbb-42a5-8548-105947cd7431/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally 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_ef452787-2dbb-42a5-8548-105947cd7431/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef452787-2dbb-42a5-8548-105947cd7431/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef452787-2dbb-42a5-8548-105947cd7431/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef452787-2dbb-42a5-8548-105947cd7431/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0620b.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef452787-2dbb-42a5-8548-105947cd7431/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef452787-2dbb-42a5-8548-105947cd7431/bin/utaipan-7li7fVZpFI --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 075a76806290abf75c2d2bbc3aed8400bd808fbae1a9b71a2d432aac31dd29da --- 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-5e519f3 [2022-11-03 01:36:46,894 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 01:36:46,898 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 01:36:46,926 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 01:36:46,927 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 01:36:46,928 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 01:36:46,930 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 01:36:46,932 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 01:36:46,934 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 01:36:46,935 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 01:36:46,936 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 01:36:46,938 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 01:36:46,938 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 01:36:46,939 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 01:36:46,941 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 01:36:46,942 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 01:36:46,943 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 01:36:46,944 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 01:36:46,946 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 01:36:46,948 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 01:36:46,950 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 01:36:46,951 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 01:36:46,952 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 01:36:46,953 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 01:36:46,958 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 01:36:46,958 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 01:36:46,958 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 01:36:46,960 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 01:36:46,960 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 01:36:46,961 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 01:36:46,962 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 01:36:46,963 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 01:36:46,963 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 01:36:46,964 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 01:36:46,966 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 01:36:46,966 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 01:36:46,967 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 01:36:46,967 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 01:36:46,967 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 01:36:46,969 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 01:36:46,969 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 01:36:46,970 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef452787-2dbb-42a5-8548-105947cd7431/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2022-11-03 01:36:47,023 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 01:36:47,024 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 01:36:47,024 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 01:36:47,024 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 01:36:47,025 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 01:36:47,025 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 01:36:47,025 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 01:36:47,026 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 01:36:47,026 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 01:36:47,026 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 01:36:47,027 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 01:36:47,027 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 01:36:47,028 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 01:36:47,028 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 01:36:47,028 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 01:36:47,028 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 01:36:47,029 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 01:36:47,029 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 01:36:47,029 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 01:36:47,029 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-03 01:36:47,030 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-03 01:36:47,030 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-03 01:36:47,030 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 01:36:47,030 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 01:36:47,031 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 01:36:47,031 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 01:36:47,031 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 01:36:47,031 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-03 01:36:47,032 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 01:36:47,032 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:36:47,032 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 01:36:47,033 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 01:36:47,033 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 01:36:47,033 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-03 01:36:47,033 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-03 01:36:47,034 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 01:36:47,034 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 01:36:47,034 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-03 01:36:47,034 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_ef452787-2dbb-42a5-8548-105947cd7431/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef452787-2dbb-42a5-8548-105947cd7431/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 075a76806290abf75c2d2bbc3aed8400bd808fbae1a9b71a2d432aac31dd29da [2022-11-03 01:36:47,430 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 01:36:47,454 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 01:36:47,456 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 01:36:47,457 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 01:36:47,458 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 01:36:47,460 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef452787-2dbb-42a5-8548-105947cd7431/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/float-newlib/float_req_bl_0620b.c [2022-11-03 01:36:47,536 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef452787-2dbb-42a5-8548-105947cd7431/bin/utaipan-7li7fVZpFI/data/423ee96fa/4192baf6ae58481c8c64008a43e417af/FLAG3f75bed65 [2022-11-03 01:36:48,128 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 01:36:48,129 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef452787-2dbb-42a5-8548-105947cd7431/sv-benchmarks/c/float-newlib/float_req_bl_0620b.c [2022-11-03 01:36:48,141 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef452787-2dbb-42a5-8548-105947cd7431/bin/utaipan-7li7fVZpFI/data/423ee96fa/4192baf6ae58481c8c64008a43e417af/FLAG3f75bed65 [2022-11-03 01:36:48,483 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef452787-2dbb-42a5-8548-105947cd7431/bin/utaipan-7li7fVZpFI/data/423ee96fa/4192baf6ae58481c8c64008a43e417af [2022-11-03 01:36:48,485 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 01:36:48,487 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 01:36:48,488 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 01:36:48,488 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 01:36:48,494 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 01:36:48,495 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:36:48" (1/1) ... [2022-11-03 01:36:48,497 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@549b5bc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:36:48, skipping insertion in model container [2022-11-03 01:36:48,497 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:36:48" (1/1) ... [2022-11-03 01:36:48,509 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 01:36:48,544 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 01:36:48,742 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef452787-2dbb-42a5-8548-105947cd7431/sv-benchmarks/c/float-newlib/float_req_bl_0620b.c[3330,3343] [2022-11-03 01:36:48,753 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:36:48,768 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 01:36:48,824 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef452787-2dbb-42a5-8548-105947cd7431/sv-benchmarks/c/float-newlib/float_req_bl_0620b.c[3330,3343] [2022-11-03 01:36:48,830 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:36:48,872 INFO L208 MainTranslator]: Completed translation [2022-11-03 01:36:48,873 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:36:48 WrapperNode [2022-11-03 01:36:48,873 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 01:36:48,875 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 01:36:48,875 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 01:36:48,875 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 01:36:48,882 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:36:48" (1/1) ... [2022-11-03 01:36:48,907 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:36:48" (1/1) ... [2022-11-03 01:36:48,955 INFO L138 Inliner]: procedures = 22, calls = 65, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 198 [2022-11-03 01:36:48,957 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 01:36:48,958 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 01:36:48,959 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 01:36:48,959 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 01:36:48,968 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:36:48" (1/1) ... [2022-11-03 01:36:48,969 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:36:48" (1/1) ... [2022-11-03 01:36:48,979 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:36:48" (1/1) ... [2022-11-03 01:36:48,981 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:36:48" (1/1) ... [2022-11-03 01:36:48,998 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:36:48" (1/1) ... [2022-11-03 01:36:49,018 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:36:48" (1/1) ... [2022-11-03 01:36:49,020 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:36:48" (1/1) ... [2022-11-03 01:36:49,027 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:36:48" (1/1) ... [2022-11-03 01:36:49,031 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 01:36:49,040 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 01:36:49,041 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 01:36:49,041 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 01:36:49,042 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:36:48" (1/1) ... [2022-11-03 01:36:49,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:36:49,060 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef452787-2dbb-42a5-8548-105947cd7431/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:36:49,074 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef452787-2dbb-42a5-8548-105947cd7431/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 01:36:49,103 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef452787-2dbb-42a5-8548-105947cd7431/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 01:36:49,129 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 01:36:49,129 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4 [2022-11-03 01:36:49,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-03 01:36:49,130 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 01:36:49,130 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2022-11-03 01:36:49,130 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-03 01:36:49,130 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 01:36:49,131 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 01:36:49,131 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2022-11-03 01:36:49,131 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-03 01:36:49,131 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 01:36:49,292 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 01:36:49,295 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 01:36:57,847 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 01:36:57,853 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 01:36:57,853 INFO L300 CfgBuilder]: Removed 8 assume(true) statements. [2022-11-03 01:36:57,855 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:36:57 BoogieIcfgContainer [2022-11-03 01:36:57,856 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 01:36:57,858 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 01:36:57,858 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 01:36:57,864 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 01:36:57,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 01:36:48" (1/3) ... [2022-11-03 01:36:57,865 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c83f98d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:36:57, skipping insertion in model container [2022-11-03 01:36:57,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:36:48" (2/3) ... [2022-11-03 01:36:57,866 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c83f98d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:36:57, skipping insertion in model container [2022-11-03 01:36:57,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:36:57" (3/3) ... [2022-11-03 01:36:57,868 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_0620b.c [2022-11-03 01:36:57,891 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 01:36:57,892 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 01:36:57,954 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 01:36:57,964 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;@62d769c4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 01:36:57,964 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 01:36:57,969 INFO L276 IsEmpty]: Start isEmpty. Operand has 37 states, 35 states have (on average 1.6285714285714286) internal successors, (57), 36 states have internal predecessors, (57), 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) [2022-11-03 01:36:57,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-03 01:36:57,976 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:36:57,976 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:36:57,978 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:36:57,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:36:57,985 INFO L85 PathProgramCache]: Analyzing trace with hash 1030429181, now seen corresponding path program 1 times [2022-11-03 01:36:58,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:36:58,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1029895254] [2022-11-03 01:36:58,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:36:58,004 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:36:58,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef452787-2dbb-42a5-8548-105947cd7431/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:36:58,008 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef452787-2dbb-42a5-8548-105947cd7431/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:36:58,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef452787-2dbb-42a5-8548-105947cd7431/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-03 01:36:59,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:36:59,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-03 01:36:59,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:36:59,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:36:59,128 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:36:59,128 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:36:59,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1029895254] [2022-11-03 01:36:59,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1029895254] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:36:59,130 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:36:59,130 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 01:36:59,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200551931] [2022-11-03 01:36:59,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:36:59,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-03 01:36:59,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:36:59,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-03 01:36:59,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 01:36:59,170 INFO L87 Difference]: Start difference. First operand has 37 states, 35 states have (on average 1.6285714285714286) internal successors, (57), 36 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:36:59,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:36:59,217 INFO L93 Difference]: Finished difference Result 72 states and 112 transitions. [2022-11-03 01:36:59,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-03 01:36:59,219 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-03 01:36:59,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:36:59,229 INFO L225 Difference]: With dead ends: 72 [2022-11-03 01:36:59,229 INFO L226 Difference]: Without dead ends: 34 [2022-11-03 01:36:59,233 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 01:36:59,241 INFO L413 NwaCegarLoop]: 48 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, 48 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 [2022-11-03 01:36:59,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 01:36:59,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-11-03 01:36:59,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2022-11-03 01:36:59,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.3636363636363635) internal successors, (45), 33 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:36:59,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 45 transitions. [2022-11-03 01:36:59,298 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 45 transitions. Word has length 10 [2022-11-03 01:36:59,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:36:59,298 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 45 transitions. [2022-11-03 01:36:59,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:36:59,299 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 45 transitions. [2022-11-03 01:36:59,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-03 01:36:59,300 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:36:59,300 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:36:59,330 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef452787-2dbb-42a5-8548-105947cd7431/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-11-03 01:36:59,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef452787-2dbb-42a5-8548-105947cd7431/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:36:59,518 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:36:59,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:36:59,518 INFO L85 PathProgramCache]: Analyzing trace with hash -1304878016, now seen corresponding path program 1 times [2022-11-03 01:36:59,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:36:59,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [49215241] [2022-11-03 01:36:59,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:36:59,520 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:36:59,520 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef452787-2dbb-42a5-8548-105947cd7431/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:36:59,522 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef452787-2dbb-42a5-8548-105947cd7431/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:36:59,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef452787-2dbb-42a5-8548-105947cd7431/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-03 01:37:00,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:37:00,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-03 01:37:00,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:37:00,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:37:00,714 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:37:00,714 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:37:00,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [49215241] [2022-11-03 01:37:00,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [49215241] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:37:00,715 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:37:00,715 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 01:37:00,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210504215] [2022-11-03 01:37:00,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:37:00,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:37:00,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:37:00,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:37:00,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:37:00,718 INFO L87 Difference]: Start difference. First operand 34 states and 45 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:37:03,524 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.44s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:37:05,731 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:37:07,786 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-03 01:37:09,951 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-03 01:37:13,021 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-03 01:37:15,170 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-03 01:37:15,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:37:15,170 INFO L93 Difference]: Finished difference Result 43 states and 54 transitions. [2022-11-03 01:37:15,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 01:37:15,212 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-03 01:37:15,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:37:15,213 INFO L225 Difference]: With dead ends: 43 [2022-11-03 01:37:15,213 INFO L226 Difference]: Without dead ends: 32 [2022-11-03 01:37:15,214 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:37:15,217 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 4 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 13 IncrementalHoareTripleChecker+Unchecked, 14.3s IncrementalHoareTripleChecker+Time [2022-11-03 01:37:15,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 120 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 6 Unknown, 13 Unchecked, 14.3s Time] [2022-11-03 01:37:15,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-11-03 01:37:15,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2022-11-03 01:37:15,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.2903225806451613) internal successors, (40), 31 states have internal predecessors, (40), 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) [2022-11-03 01:37:15,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 40 transitions. [2022-11-03 01:37:15,222 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 40 transitions. Word has length 11 [2022-11-03 01:37:15,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:37:15,222 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 40 transitions. [2022-11-03 01:37:15,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:37:15,223 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 40 transitions. [2022-11-03 01:37:15,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-03 01:37:15,223 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:37:15,223 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:37:15,249 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef452787-2dbb-42a5-8548-105947cd7431/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-11-03 01:37:15,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef452787-2dbb-42a5-8548-105947cd7431/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:37:15,430 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:37:15,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:37:15,430 INFO L85 PathProgramCache]: Analyzing trace with hash -413875709, now seen corresponding path program 1 times [2022-11-03 01:37:15,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:37:15,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [557117805] [2022-11-03 01:37:15,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:37:15,432 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:37:15,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef452787-2dbb-42a5-8548-105947cd7431/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:37:15,433 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef452787-2dbb-42a5-8548-105947cd7431/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:37:15,439 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef452787-2dbb-42a5-8548-105947cd7431/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-03 01:37:16,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:37:16,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-03 01:37:16,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:37:16,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:37:16,667 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:37:16,667 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:37:16,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [557117805] [2022-11-03 01:37:16,668 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [557117805] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:37:16,668 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:37:16,668 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 01:37:16,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182819283] [2022-11-03 01:37:16,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:37:16,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:37:16,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:37:16,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:37:16,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:37:16,670 INFO L87 Difference]: Start difference. First operand 32 states and 40 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 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) [2022-11-03 01:37:19,300 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.32s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:37:21,517 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:37:24,371 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-03 01:37:27,828 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-03 01:37:27,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:37:27,878 INFO L93 Difference]: Finished difference Result 45 states and 52 transitions. [2022-11-03 01:37:27,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 01:37:27,879 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 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 [2022-11-03 01:37:27,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:37:27,880 INFO L225 Difference]: With dead ends: 45 [2022-11-03 01:37:27,880 INFO L226 Difference]: Without dead ends: 42 [2022-11-03 01:37:27,880 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:37:27,881 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 33 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:37:27,882 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 108 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 4 Unknown, 0 Unchecked, 11.1s Time] [2022-11-03 01:37:27,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-11-03 01:37:27,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 34. [2022-11-03 01:37:27,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.2727272727272727) internal successors, (42), 33 states have internal predecessors, (42), 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) [2022-11-03 01:37:27,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 42 transitions. [2022-11-03 01:37:27,889 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 42 transitions. Word has length 13 [2022-11-03 01:37:27,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:37:27,889 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 42 transitions. [2022-11-03 01:37:27,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 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) [2022-11-03 01:37:27,890 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 42 transitions. [2022-11-03 01:37:27,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-03 01:37:27,890 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:37:27,890 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:37:27,917 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef452787-2dbb-42a5-8548-105947cd7431/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-03 01:37:28,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef452787-2dbb-42a5-8548-105947cd7431/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:37:28,098 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:37:28,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:37:28,099 INFO L85 PathProgramCache]: Analyzing trace with hash 1612074501, now seen corresponding path program 1 times [2022-11-03 01:37:28,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:37:28,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [709159352] [2022-11-03 01:37:28,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:37:28,100 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:37:28,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef452787-2dbb-42a5-8548-105947cd7431/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:37:28,106 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef452787-2dbb-42a5-8548-105947cd7431/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:37:28,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef452787-2dbb-42a5-8548-105947cd7431/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-03 01:37:29,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:37:29,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-03 01:37:29,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:37:30,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:37:30,297 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:37:30,297 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:37:30,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [709159352] [2022-11-03 01:37:30,298 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [709159352] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:37:30,298 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:37:30,298 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 01:37:30,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895780322] [2022-11-03 01:37:30,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:37:30,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:37:30,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:37:30,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:37:30,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:37:30,301 INFO L87 Difference]: Start difference. First operand 34 states and 42 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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) [2022-11-03 01:37:32,865 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.30s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:37:35,054 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:37:37,129 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-03 01:37:39,283 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-03 01:37:42,656 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-03 01:37:42,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:37:42,656 INFO L93 Difference]: Finished difference Result 48 states and 58 transitions. [2022-11-03 01:37:42,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 01:37:42,699 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-03 01:37:42,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:37:42,699 INFO L225 Difference]: With dead ends: 48 [2022-11-03 01:37:42,700 INFO L226 Difference]: Without dead ends: 34 [2022-11-03 01:37:42,700 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:37:42,701 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 4 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 12 IncrementalHoareTripleChecker+Unchecked, 12.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:37:42,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 109 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 5 Unknown, 12 Unchecked, 12.2s Time] [2022-11-03 01:37:42,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-11-03 01:37:42,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2022-11-03 01:37:42,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.2424242424242424) internal successors, (41), 33 states have internal predecessors, (41), 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) [2022-11-03 01:37:42,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 41 transitions. [2022-11-03 01:37:42,707 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 41 transitions. Word has length 15 [2022-11-03 01:37:42,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:37:42,707 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 41 transitions. [2022-11-03 01:37:42,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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) [2022-11-03 01:37:42,708 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 41 transitions. [2022-11-03 01:37:42,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-03 01:37:42,708 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:37:42,708 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:37:42,766 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef452787-2dbb-42a5-8548-105947cd7431/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-03 01:37:42,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef452787-2dbb-42a5-8548-105947cd7431/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:37:42,911 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:37:42,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:37:42,911 INFO L85 PathProgramCache]: Analyzing trace with hash 1848532469, now seen corresponding path program 1 times [2022-11-03 01:37:42,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:37:42,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [301064601] [2022-11-03 01:37:42,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:37:42,912 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:37:42,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef452787-2dbb-42a5-8548-105947cd7431/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:37:42,913 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef452787-2dbb-42a5-8548-105947cd7431/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:37:42,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef452787-2dbb-42a5-8548-105947cd7431/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-03 01:37:44,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:37:44,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-03 01:37:44,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:37:45,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:37:45,748 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:37:45,748 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:37:45,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [301064601] [2022-11-03 01:37:45,749 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [301064601] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:37:45,749 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:37:45,749 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:37:45,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593143823] [2022-11-03 01:37:45,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:37:45,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 01:37:45,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:37:45,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 01:37:45,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-03 01:37:45,753 INFO L87 Difference]: Start difference. First operand 34 states and 41 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 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) [2022-11-03 01:37:47,994 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-03 01:37:50,402 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-03 01:37:52,581 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-03 01:37:54,969 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.39s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:37:56,974 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:37:58,981 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:38:01,213 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:38:03,216 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:38:04,779 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-03 01:38:04,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:38:04,814 INFO L93 Difference]: Finished difference Result 55 states and 63 transitions. [2022-11-03 01:38:04,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 01:38:04,832 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 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 [2022-11-03 01:38:04,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:38:04,833 INFO L225 Difference]: With dead ends: 55 [2022-11-03 01:38:04,833 INFO L226 Difference]: Without dead ends: 41 [2022-11-03 01:38:04,833 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-03 01:38:04,835 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 27 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:38:04,835 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 56 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 7 Unknown, 0 Unchecked, 19.0s Time] [2022-11-03 01:38:04,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-11-03 01:38:04,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 33. [2022-11-03 01:38:04,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.21875) internal successors, (39), 32 states have internal predecessors, (39), 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) [2022-11-03 01:38:04,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2022-11-03 01:38:04,841 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 16 [2022-11-03 01:38:04,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:38:04,841 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2022-11-03 01:38:04,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 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) [2022-11-03 01:38:04,841 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2022-11-03 01:38:04,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-03 01:38:04,842 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:38:04,842 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:38:04,889 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef452787-2dbb-42a5-8548-105947cd7431/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-03 01:38:05,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef452787-2dbb-42a5-8548-105947cd7431/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:38:05,058 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:38:05,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:38:05,059 INFO L85 PathProgramCache]: Analyzing trace with hash 712330328, now seen corresponding path program 1 times [2022-11-03 01:38:05,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:38:05,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [782727839] [2022-11-03 01:38:05,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:38:05,059 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:38:05,060 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef452787-2dbb-42a5-8548-105947cd7431/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:38:05,060 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef452787-2dbb-42a5-8548-105947cd7431/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:38:05,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef452787-2dbb-42a5-8548-105947cd7431/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-03 01:38:05,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:38:05,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-03 01:38:05,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:38:06,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:38:06,786 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:38:06,786 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:38:06,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [782727839] [2022-11-03 01:38:06,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [782727839] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:38:06,786 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:38:06,786 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-03 01:38:06,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733462618] [2022-11-03 01:38:06,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:38:06,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-03 01:38:06,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:38:06,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-03 01:38:06,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-03 01:38:06,788 INFO L87 Difference]: Start difference. First operand 33 states and 39 transitions. Second operand has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:38:09,879 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-03 01:38:11,422 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-03 01:38:13,561 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-03 01:38:15,753 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-03 01:38:18,197 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.44s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:38:20,386 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:38:22,445 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-03 01:38:23,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:38:23,282 INFO L93 Difference]: Finished difference Result 40 states and 45 transitions. [2022-11-03 01:38:23,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 01:38:23,282 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-03 01:38:23,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:38:23,285 INFO L225 Difference]: With dead ends: 40 [2022-11-03 01:38:23,285 INFO L226 Difference]: Without dead ends: 29 [2022-11-03 01:38:23,285 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2022-11-03 01:38:23,287 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 32 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 8 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.9s IncrementalHoareTripleChecker+Time [2022-11-03 01:38:23,287 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 220 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 51 Invalid, 6 Unknown, 0 Unchecked, 15.9s Time] [2022-11-03 01:38:23,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-11-03 01:38:23,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-11-03 01:38:23,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 28 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:38:23,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2022-11-03 01:38:23,293 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 17 [2022-11-03 01:38:23,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:38:23,293 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2022-11-03 01:38:23,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:38:23,294 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2022-11-03 01:38:23,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-03 01:38:23,295 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:38:23,295 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] [2022-11-03 01:38:23,325 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef452787-2dbb-42a5-8548-105947cd7431/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-03 01:38:23,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef452787-2dbb-42a5-8548-105947cd7431/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:38:23,503 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:38:23,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:38:23,505 INFO L85 PathProgramCache]: Analyzing trace with hash -1278549058, now seen corresponding path program 1 times [2022-11-03 01:38:23,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:38:23,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1497460495] [2022-11-03 01:38:23,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:38:23,506 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:38:23,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef452787-2dbb-42a5-8548-105947cd7431/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:38:23,513 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef452787-2dbb-42a5-8548-105947cd7431/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:38:23,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef452787-2dbb-42a5-8548-105947cd7431/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-03 01:38:25,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:38:25,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-03 01:38:25,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:38:25,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:38:25,950 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:38:25,950 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:38:25,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1497460495] [2022-11-03 01:38:25,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1497460495] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:38:25,951 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:38:25,951 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 01:38:25,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841641691] [2022-11-03 01:38:25,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:38:25,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:38:25,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:38:25,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:38:25,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:38:25,953 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:38:26,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:38:26,109 INFO L93 Difference]: Finished difference Result 29 states and 34 transitions. [2022-11-03 01:38:26,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 01:38:26,110 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-11-03 01:38:26,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:38:26,110 INFO L225 Difference]: With dead ends: 29 [2022-11-03 01:38:26,110 INFO L226 Difference]: Without dead ends: 0 [2022-11-03 01:38:26,111 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:38:26,112 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 4 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:38:26,112 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 7 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 3 Unchecked, 0.0s Time] [2022-11-03 01:38:26,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-03 01:38:26,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-03 01:38:26,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:38:26,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-03 01:38:26,114 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2022-11-03 01:38:26,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:38:26,114 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-03 01:38:26,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:38:26,115 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-03 01:38:26,115 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-03 01:38:26,118 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-03 01:38:26,166 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef452787-2dbb-42a5-8548-105947cd7431/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2022-11-03 01:38:26,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef452787-2dbb-42a5-8548-105947cd7431/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:38:26,324 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-03 01:38:26,715 INFO L899 garLoopResultBuilder]: For program point L143(line 143) no Hoare annotation was computed. [2022-11-03 01:38:26,715 INFO L899 garLoopResultBuilder]: For program point L143-2(lines 143 146) no Hoare annotation was computed. [2022-11-03 01:38:26,715 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-03 01:38:26,715 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-11-03 01:38:26,715 INFO L895 garLoopResultBuilder]: At program point L28(lines 16 29) the Hoare annotation is: false [2022-11-03 01:38:26,716 INFO L899 garLoopResultBuilder]: For program point L144(line 144) no Hoare annotation was computed. [2022-11-03 01:38:26,716 INFO L899 garLoopResultBuilder]: For program point L111(lines 111 116) no Hoare annotation was computed. [2022-11-03 01:38:26,716 INFO L895 garLoopResultBuilder]: At program point L128(lines 119 129) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 8 24)))) (and (= .cse0 (fp ((_ extract 31 31) |ULTIMATE.start___signbit_float_~w~1#1|) ((_ extract 30 23) |ULTIMATE.start___signbit_float_~w~1#1|) ((_ extract 22 0) |ULTIMATE.start___signbit_float_~w~1#1|))) |ULTIMATE.start_main_#t~short29#1| (= |ULTIMATE.start___signbit_float_#res#1| (_ bv1 32)) (= |ULTIMATE.start_atan_float_#res#1| .cse0) (= .cse0 |ULTIMATE.start___signbit_float_~x#1|) (= |ULTIMATE.start_main_~res~0#1| .cse0) (= .cse0 |ULTIMATE.start_atan_float_~x#1|))) [2022-11-03 01:38:26,716 INFO L899 garLoopResultBuilder]: For program point L122-1(lines 122 126) no Hoare annotation was computed. [2022-11-03 01:38:26,716 INFO L895 garLoopResultBuilder]: At program point L122-2(lines 122 126) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 8 24)))) (and |ULTIMATE.start_main_#t~short29#1| (= |ULTIMATE.start_atan_float_#res#1| .cse0) (= .cse0 |ULTIMATE.start___signbit_float_~x#1|) (= |ULTIMATE.start_main_~res~0#1| .cse0) (= .cse0 |ULTIMATE.start_atan_float_~x#1|))) [2022-11-03 01:38:26,716 INFO L899 garLoopResultBuilder]: For program point L23(lines 23 27) no Hoare annotation was computed. [2022-11-03 01:38:26,716 INFO L899 garLoopResultBuilder]: For program point L122-3(lines 122 126) no Hoare annotation was computed. [2022-11-03 01:38:26,717 INFO L895 garLoopResultBuilder]: At program point L23-1(lines 16 29) the Hoare annotation is: false [2022-11-03 01:38:26,717 INFO L899 garLoopResultBuilder]: For program point L23-2(lines 23 27) no Hoare annotation was computed. [2022-11-03 01:38:26,717 INFO L899 garLoopResultBuilder]: For program point L81(lines 81 97) no Hoare annotation was computed. [2022-11-03 01:38:26,717 INFO L899 garLoopResultBuilder]: For program point L73(lines 73 98) no Hoare annotation was computed. [2022-11-03 01:38:26,717 INFO L899 garLoopResultBuilder]: For program point L65(lines 65 72) no Hoare annotation was computed. [2022-11-03 01:38:26,717 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-11-03 01:38:26,718 INFO L899 garLoopResultBuilder]: For program point L90(lines 90 96) no Hoare annotation was computed. [2022-11-03 01:38:26,718 INFO L899 garLoopResultBuilder]: For program point L90-2(lines 73 98) no Hoare annotation was computed. [2022-11-03 01:38:26,718 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 144) no Hoare annotation was computed. [2022-11-03 01:38:26,718 INFO L902 garLoopResultBuilder]: At program point L148(lines 131 149) the Hoare annotation is: true [2022-11-03 01:38:26,718 INFO L899 garLoopResultBuilder]: For program point L115(line 115) no Hoare annotation was computed. [2022-11-03 01:38:26,719 INFO L899 garLoopResultBuilder]: For program point L82(lines 82 88) no Hoare annotation was computed. [2022-11-03 01:38:26,719 INFO L899 garLoopResultBuilder]: For program point L115-2(line 115) no Hoare annotation was computed. [2022-11-03 01:38:26,719 INFO L895 garLoopResultBuilder]: At program point L115-3(lines 55 117) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 8 24)))) (and (= ~huge_atan~0 ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1000000000000000000000000000000.0))) (= |ULTIMATE.start_atan_float_#res#1| .cse0) (= ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1.0)) ~one_atan~0) (= currentRoundingMode roundNearestTiesToEven) (= .cse0 |ULTIMATE.start_atan_float_~x#1|))) [2022-11-03 01:38:26,719 INFO L899 garLoopResultBuilder]: For program point L74(lines 74 77) no Hoare annotation was computed. [2022-11-03 01:38:26,720 INFO L899 garLoopResultBuilder]: For program point L74-2(lines 74 77) no Hoare annotation was computed. [2022-11-03 01:38:26,720 INFO L899 garLoopResultBuilder]: For program point L66(lines 66 67) no Hoare annotation was computed. [2022-11-03 01:38:26,720 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-03 01:38:26,720 INFO L899 garLoopResultBuilder]: For program point L75(lines 75 76) no Hoare annotation was computed. [2022-11-03 01:38:26,720 INFO L899 garLoopResultBuilder]: For program point L59-1(lines 59 63) no Hoare annotation was computed. [2022-11-03 01:38:26,721 INFO L895 garLoopResultBuilder]: At program point L59-2(lines 59 63) the Hoare annotation is: (and (= ~huge_atan~0 ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1000000000000000000000000000000.0))) (= ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1.0)) ~one_atan~0) (= currentRoundingMode roundNearestTiesToEven) (= (fp.neg (_ +zero 8 24)) |ULTIMATE.start_atan_float_~x#1|)) [2022-11-03 01:38:26,721 INFO L899 garLoopResultBuilder]: For program point L59-3(lines 59 63) no Hoare annotation was computed. [2022-11-03 01:38:26,721 INFO L899 garLoopResultBuilder]: For program point L18-1(lines 18 22) no Hoare annotation was computed. [2022-11-03 01:38:26,721 INFO L895 garLoopResultBuilder]: At program point L18-2(lines 18 22) the Hoare annotation is: false [2022-11-03 01:38:26,721 INFO L899 garLoopResultBuilder]: For program point L68(lines 68 71) no Hoare annotation was computed. [2022-11-03 01:38:26,725 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:38:26,728 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-03 01:38:26,742 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2022-11-03 01:38:26,744 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2022-11-03 01:38:26,745 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2022-11-03 01:38:26,746 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2022-11-03 01:38:26,747 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 01:38:26 BoogieIcfgContainer [2022-11-03 01:38:26,747 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-03 01:38:26,747 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-03 01:38:26,748 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-03 01:38:26,748 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-03 01:38:26,748 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:36:57" (3/4) ... [2022-11-03 01:38:26,752 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-03 01:38:26,769 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2022-11-03 01:38:26,770 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2022-11-03 01:38:26,770 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-03 01:38:26,770 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-03 01:38:26,801 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((huge_atan == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0E30)) && \result == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0)) == one_atan) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x [2022-11-03 01:38:26,802 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((aux-res == -0.0f && __signbit_float(res) == 1-aux && \result == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x) && res == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x [2022-11-03 01:38:26,803 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) && aux-res == -0.0f && __signbit_float(res) == 1-aux) && \result == 1bv32) && \result == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x) && res == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x [2022-11-03 01:38:26,831 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef452787-2dbb-42a5-8548-105947cd7431/bin/utaipan-7li7fVZpFI/witness.graphml [2022-11-03 01:38:26,832 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-03 01:38:26,832 INFO L158 Benchmark]: Toolchain (without parser) took 98345.67ms. Allocated memory was 60.8MB in the beginning and 73.4MB in the end (delta: 12.6MB). Free memory was 39.2MB in the beginning and 50.3MB in the end (delta: -11.2MB). Peak memory consumption was 27.8MB. Max. memory is 16.1GB. [2022-11-03 01:38:26,833 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 60.8MB. Free memory was 40.8MB in the beginning and 40.8MB in the end (delta: 48.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 01:38:26,833 INFO L158 Benchmark]: CACSL2BoogieTranslator took 385.12ms. Allocated memory is still 60.8MB. Free memory was 38.9MB in the beginning and 43.2MB in the end (delta: -4.3MB). Peak memory consumption was 16.5MB. Max. memory is 16.1GB. [2022-11-03 01:38:26,834 INFO L158 Benchmark]: Boogie Procedure Inliner took 82.67ms. Allocated memory is still 60.8MB. Free memory was 43.2MB in the beginning and 40.7MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 01:38:26,835 INFO L158 Benchmark]: Boogie Preprocessor took 81.80ms. Allocated memory is still 60.8MB. Free memory was 40.7MB in the beginning and 38.4MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 01:38:26,835 INFO L158 Benchmark]: RCFGBuilder took 8815.24ms. Allocated memory is still 60.8MB. Free memory was 38.4MB in the beginning and 38.2MB in the end (delta: 187.5kB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-11-03 01:38:26,836 INFO L158 Benchmark]: TraceAbstraction took 88889.42ms. Allocated memory was 60.8MB in the beginning and 73.4MB in the end (delta: 12.6MB). Free memory was 37.5MB in the beginning and 26.8MB in the end (delta: 10.7MB). Peak memory consumption was 23.9MB. Max. memory is 16.1GB. [2022-11-03 01:38:26,836 INFO L158 Benchmark]: Witness Printer took 84.32ms. Allocated memory is still 73.4MB. Free memory was 26.8MB in the beginning and 50.3MB in the end (delta: -23.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 01:38:26,838 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 60.8MB. Free memory was 40.8MB in the beginning and 40.8MB in the end (delta: 48.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 385.12ms. Allocated memory is still 60.8MB. Free memory was 38.9MB in the beginning and 43.2MB in the end (delta: -4.3MB). Peak memory consumption was 16.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 82.67ms. Allocated memory is still 60.8MB. Free memory was 43.2MB in the beginning and 40.7MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 81.80ms. Allocated memory is still 60.8MB. Free memory was 40.7MB in the beginning and 38.4MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 8815.24ms. Allocated memory is still 60.8MB. Free memory was 38.4MB in the beginning and 38.2MB in the end (delta: 187.5kB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 88889.42ms. Allocated memory was 60.8MB in the beginning and 73.4MB in the end (delta: 12.6MB). Free memory was 37.5MB in the beginning and 26.8MB in the end (delta: 10.7MB). Peak memory consumption was 23.9MB. Max. memory is 16.1GB. * Witness Printer took 84.32ms. Allocated memory is still 73.4MB. Free memory was 26.8MB in the beginning and 50.3MB in the end (delta: -23.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 144]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 37 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 88.8s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 74.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 28 mSolverCounterUnknown, 104 SdHoareTripleChecker+Valid, 72.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 104 mSDsluCounter, 668 SdHoareTripleChecker+Invalid, 70.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 28 IncrementalHoareTripleChecker+Unchecked, 453 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 112 IncrementalHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 215 mSDtfsCounter, 112 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 109 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=0, InterpolantAutomatonStates: 38, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 16 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 8 PreInvPairs, 13 NumberOfFragments, 101 HoareAnnotationTreeSize, 8 FomulaSimplifications, 92 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 9.0s SatisfiabilityAnalysisTime, 3.3s InterpolantComputationTime, 103 NumberOfCodeBlocks, 103 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 96 ConstructedInterpolants, 6 QuantifiedInterpolants, 493 SizeOfPredicates, 40 NumberOfNonLiveVariables, 735 ConjunctsInSsa, 61 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 119]: Loop Invariant Derived loop invariant: (((((~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) && aux-res == -0.0f && __signbit_float(res) == 1-aux) && \result == 1bv32) && \result == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x) && res == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x - InvariantResult [Line: 131]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 59]: Loop Invariant [2022-11-03 01:38:26,864 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2022-11-03 01:38:26,865 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: ((huge_atan == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0E30)) && ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0)) == one_atan) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x - InvariantResult [Line: 122]: Loop Invariant Derived loop invariant: (((aux-res == -0.0f && __signbit_float(res) == 1-aux && \result == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x) && res == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 55]: Loop Invariant [2022-11-03 01:38:26,870 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2022-11-03 01:38:26,871 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: (((huge_atan == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0E30)) && \result == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0)) == one_atan) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x RESULT: Ultimate proved your program to be correct! [2022-11-03 01:38:27,064 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef452787-2dbb-42a5-8548-105947cd7431/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE