./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/square_3+soft_float_4-2a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dec8950-88dc-48eb-9c2c-49a0f39219b0/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dec8950-88dc-48eb-9c2c-49a0f39219b0/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dec8950-88dc-48eb-9c2c-49a0f39219b0/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dec8950-88dc-48eb-9c2c-49a0f39219b0/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/square_3+soft_float_4-2a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dec8950-88dc-48eb-9c2c-49a0f39219b0/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dec8950-88dc-48eb-9c2c-49a0f39219b0/bin/utaipan-TEXQjIfE4P --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 4ba0922fbaee541ed4ded1889d0ea25cfcdd1e879f7757f1ef1aa76d5475dafa --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 01:36:15,130 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 01:36:15,132 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 01:36:15,165 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 01:36:15,166 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 01:36:15,167 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 01:36:15,169 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 01:36:15,172 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 01:36:15,174 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 01:36:15,176 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 01:36:15,177 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 01:36:15,179 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 01:36:15,180 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 01:36:15,181 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 01:36:15,183 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 01:36:15,185 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 01:36:15,186 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 01:36:15,187 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 01:36:15,190 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 01:36:15,193 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 01:36:15,195 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 01:36:15,197 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 01:36:15,199 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 01:36:15,203 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 01:36:15,207 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 01:36:15,208 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 01:36:15,208 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 01:36:15,209 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 01:36:15,210 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 01:36:15,211 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 01:36:15,212 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 01:36:15,213 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 01:36:15,220 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 01:36:15,223 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 01:36:15,225 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 01:36:15,226 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 01:36:15,227 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 01:36:15,227 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 01:36:15,227 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 01:36:15,229 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 01:36:15,230 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 01:36:15,235 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dec8950-88dc-48eb-9c2c-49a0f39219b0/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-21 01:36:15,277 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 01:36:15,278 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 01:36:15,278 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 01:36:15,279 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 01:36:15,282 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 01:36:15,283 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 01:36:15,283 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 01:36:15,283 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 01:36:15,283 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 01:36:15,284 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 01:36:15,284 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 01:36:15,286 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 01:36:15,286 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 01:36:15,286 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 01:36:15,287 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 01:36:15,287 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 01:36:15,287 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 01:36:15,288 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 01:36:15,289 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 01:36:15,289 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 01:36:15,290 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 01:36:15,290 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 01:36:15,290 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 01:36:15,291 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 01:36:15,291 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 01:36:15,291 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 01:36:15,293 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 01:36:15,294 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 01:36:15,294 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 01:36:15,294 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 01:36:15,295 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 01:36:15,295 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 01:36:15,296 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:36:15,296 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 01:36:15,296 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 01:36:15,297 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 01:36:15,297 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 01:36:15,297 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 01:36:15,298 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 01:36:15,298 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 01:36:15,298 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 01:36:15,299 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dec8950-88dc-48eb-9c2c-49a0f39219b0/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dec8950-88dc-48eb-9c2c-49a0f39219b0/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4ba0922fbaee541ed4ded1889d0ea25cfcdd1e879f7757f1ef1aa76d5475dafa [2021-11-21 01:36:15,639 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 01:36:15,667 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 01:36:15,670 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 01:36:15,672 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 01:36:15,674 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 01:36:15,677 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dec8950-88dc-48eb-9c2c-49a0f39219b0/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/combinations/square_3+soft_float_4-2a.c.cil.c [2021-11-21 01:36:15,777 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dec8950-88dc-48eb-9c2c-49a0f39219b0/bin/utaipan-TEXQjIfE4P/data/4abf2cfb2/d46a6f2f2e894d0c985ac8530442072a/FLAGf6139a880 [2021-11-21 01:36:16,473 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 01:36:16,474 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dec8950-88dc-48eb-9c2c-49a0f39219b0/sv-benchmarks/c/combinations/square_3+soft_float_4-2a.c.cil.c [2021-11-21 01:36:16,495 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dec8950-88dc-48eb-9c2c-49a0f39219b0/bin/utaipan-TEXQjIfE4P/data/4abf2cfb2/d46a6f2f2e894d0c985ac8530442072a/FLAGf6139a880 [2021-11-21 01:36:16,773 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dec8950-88dc-48eb-9c2c-49a0f39219b0/bin/utaipan-TEXQjIfE4P/data/4abf2cfb2/d46a6f2f2e894d0c985ac8530442072a [2021-11-21 01:36:16,776 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 01:36:16,777 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 01:36:16,779 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 01:36:16,779 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 01:36:16,783 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 01:36:16,784 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:36:16" (1/1) ... [2021-11-21 01:36:16,794 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1128b0e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:36:16, skipping insertion in model container [2021-11-21 01:36:16,795 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:36:16" (1/1) ... [2021-11-21 01:36:16,802 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 01:36:16,831 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:36:17,068 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_9dec8950-88dc-48eb-9c2c-49a0f39219b0/sv-benchmarks/c/combinations/square_3+soft_float_4-2a.c.cil.c[1999,2012] [2021-11-21 01:36:17,074 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_9dec8950-88dc-48eb-9c2c-49a0f39219b0/sv-benchmarks/c/combinations/square_3+soft_float_4-2a.c.cil.c[2393,2406] [2021-11-21 01:36:17,130 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:36:17,138 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 01:36:17,156 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_9dec8950-88dc-48eb-9c2c-49a0f39219b0/sv-benchmarks/c/combinations/square_3+soft_float_4-2a.c.cil.c[1999,2012] [2021-11-21 01:36:17,157 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_9dec8950-88dc-48eb-9c2c-49a0f39219b0/sv-benchmarks/c/combinations/square_3+soft_float_4-2a.c.cil.c[2393,2406] [2021-11-21 01:36:17,196 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:36:17,215 INFO L208 MainTranslator]: Completed translation [2021-11-21 01:36:17,216 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:36:17 WrapperNode [2021-11-21 01:36:17,216 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 01:36:17,217 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 01:36:17,217 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 01:36:17,217 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 01:36:17,226 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:36:17" (1/1) ... [2021-11-21 01:36:17,252 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:36:17" (1/1) ... [2021-11-21 01:36:17,275 INFO L137 Inliner]: procedures = 27, calls = 19, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 74 [2021-11-21 01:36:17,275 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 01:36:17,276 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 01:36:17,276 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 01:36:17,276 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 01:36:17,288 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:36:17" (1/1) ... [2021-11-21 01:36:17,288 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:36:17" (1/1) ... [2021-11-21 01:36:17,290 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:36:17" (1/1) ... [2021-11-21 01:36:17,291 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:36:17" (1/1) ... [2021-11-21 01:36:17,298 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:36:17" (1/1) ... [2021-11-21 01:36:17,304 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:36:17" (1/1) ... [2021-11-21 01:36:17,306 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:36:17" (1/1) ... [2021-11-21 01:36:17,309 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 01:36:17,310 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 01:36:17,311 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 01:36:17,311 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 01:36:17,312 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:36:17" (1/1) ... [2021-11-21 01:36:17,321 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:36:17,335 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dec8950-88dc-48eb-9c2c-49a0f39219b0/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:36:17,360 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dec8950-88dc-48eb-9c2c-49a0f39219b0/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 01:36:17,372 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dec8950-88dc-48eb-9c2c-49a0f39219b0/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 01:36:17,423 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 01:36:17,423 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2021-11-21 01:36:17,423 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2021-11-21 01:36:17,423 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2021-11-21 01:36:17,423 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2021-11-21 01:36:17,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 01:36:17,424 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 01:36:17,424 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 01:36:17,424 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-21 01:36:17,424 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-21 01:36:17,524 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 01:36:17,526 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 01:36:17,789 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 01:36:17,948 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 01:36:17,949 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-21 01:36:17,951 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:36:17 BoogieIcfgContainer [2021-11-21 01:36:17,952 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 01:36:17,954 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 01:36:17,954 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 01:36:17,970 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 01:36:17,970 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:36:16" (1/3) ... [2021-11-21 01:36:17,971 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d74d522 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:36:17, skipping insertion in model container [2021-11-21 01:36:17,971 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:36:17" (2/3) ... [2021-11-21 01:36:17,972 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d74d522 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:36:17, skipping insertion in model container [2021-11-21 01:36:17,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:36:17" (3/3) ... [2021-11-21 01:36:17,973 INFO L111 eAbstractionObserver]: Analyzing ICFG square_3+soft_float_4-2a.c.cil.c [2021-11-21 01:36:17,980 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 01:36:17,980 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-21 01:36:18,072 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 01:36:18,080 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-21 01:36:18,080 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-21 01:36:18,118 INFO L276 IsEmpty]: Start isEmpty. Operand has 49 states, 35 states have (on average 1.4857142857142858) internal successors, (52), 37 states have internal predecessors, (52), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-21 01:36:18,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-21 01:36:18,125 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:36:18,126 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-21 01:36:18,126 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:36:18,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:36:18,134 INFO L85 PathProgramCache]: Analyzing trace with hash 6807338, now seen corresponding path program 1 times [2021-11-21 01:36:18,145 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:36:18,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52567377] [2021-11-21 01:36:18,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:36:18,148 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:36:18,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-21 01:36:18,293 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-21 01:36:18,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-21 01:36:18,363 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-21 01:36:18,366 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-21 01:36:18,367 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-11-21 01:36:18,371 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-11-21 01:36:18,372 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 01:36:18,377 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2021-11-21 01:36:18,380 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-21 01:36:18,410 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 01:36:18 BoogieIcfgContainer [2021-11-21 01:36:18,410 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-21 01:36:18,414 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-21 01:36:18,414 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-21 01:36:18,414 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-21 01:36:18,415 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:36:17" (3/4) ... [2021-11-21 01:36:18,421 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-21 01:36:18,421 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-21 01:36:18,424 INFO L158 Benchmark]: Toolchain (without parser) took 1644.90ms. Allocated memory is still 104.9MB. Free memory was 61.6MB in the beginning and 42.2MB in the end (delta: 19.3MB). Peak memory consumption was 16.9MB. Max. memory is 16.1GB. [2021-11-21 01:36:18,424 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 104.9MB. Free memory is still 78.2MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 01:36:18,425 INFO L158 Benchmark]: CACSL2BoogieTranslator took 436.76ms. Allocated memory is still 104.9MB. Free memory was 61.3MB in the beginning and 75.7MB in the end (delta: -14.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-21 01:36:18,427 INFO L158 Benchmark]: Boogie Procedure Inliner took 58.45ms. Allocated memory is still 104.9MB. Free memory was 75.7MB in the beginning and 74.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-21 01:36:18,428 INFO L158 Benchmark]: Boogie Preprocessor took 33.75ms. Allocated memory is still 104.9MB. Free memory was 73.7MB in the beginning and 72.4MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-21 01:36:18,435 INFO L158 Benchmark]: RCFGBuilder took 641.38ms. Allocated memory is still 104.9MB. Free memory was 72.4MB in the beginning and 56.0MB in the end (delta: 16.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2021-11-21 01:36:18,436 INFO L158 Benchmark]: TraceAbstraction took 456.86ms. Allocated memory is still 104.9MB. Free memory was 55.4MB in the beginning and 42.8MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-21 01:36:18,437 INFO L158 Benchmark]: Witness Printer took 7.55ms. Allocated memory is still 104.9MB. Free memory was 42.5MB in the beginning and 42.2MB in the end (delta: 278.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 01:36:18,448 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37ms. Allocated memory is still 104.9MB. Free memory is still 78.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 436.76ms. Allocated memory is still 104.9MB. Free memory was 61.3MB in the beginning and 75.7MB in the end (delta: -14.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 58.45ms. Allocated memory is still 104.9MB. Free memory was 75.7MB in the beginning and 74.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 33.75ms. Allocated memory is still 104.9MB. Free memory was 73.7MB in the beginning and 72.4MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 641.38ms. Allocated memory is still 104.9MB. Free memory was 72.4MB in the beginning and 56.0MB in the end (delta: 16.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 456.86ms. Allocated memory is still 104.9MB. Free memory was 55.4MB in the beginning and 42.8MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Witness Printer took 7.55ms. Allocated memory is still 104.9MB. Free memory was 42.5MB in the beginning and 42.2MB in the end (delta: 278.1kB). 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: 48]: 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 47, overapproximation of someBinaryArithmeticFLOAToperation at line 45. Possible FailurePath: [L310] COND TRUE __VERIFIER_nondet_int() [L311] CALL main1() [L39] float IN = __VERIFIER_nondet_float(); [L40] CALL assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L34] COND FALSE !(!cond) [L40] RET assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L42] float x = IN; [L44-L45] float result = 1.0f + 0.5f*x - 0.125f*x*x + 0.0625f*x*x*x - 0.0390625f*x*x*x*x; VAL [IN=49, x=49] [L47] COND TRUE !(result >= 0.0f && result < 1.39843f) VAL [IN=49, x=49] [L48] reach_error() VAL [IN=49, x=49] - UnprovableResult [Line: 61]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 49 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=49occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-21 01:36:18,515 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dec8950-88dc-48eb-9c2c-49a0f39219b0/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dec8950-88dc-48eb-9c2c-49a0f39219b0/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dec8950-88dc-48eb-9c2c-49a0f39219b0/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dec8950-88dc-48eb-9c2c-49a0f39219b0/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dec8950-88dc-48eb-9c2c-49a0f39219b0/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/square_3+soft_float_4-2a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dec8950-88dc-48eb-9c2c-49a0f39219b0/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dec8950-88dc-48eb-9c2c-49a0f39219b0/bin/utaipan-TEXQjIfE4P --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 4ba0922fbaee541ed4ded1889d0ea25cfcdd1e879f7757f1ef1aa76d5475dafa --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 01:36:21,121 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 01:36:21,125 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 01:36:21,186 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 01:36:21,186 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 01:36:21,192 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 01:36:21,194 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 01:36:21,200 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 01:36:21,204 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 01:36:21,213 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 01:36:21,215 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 01:36:21,218 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 01:36:21,218 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 01:36:21,221 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 01:36:21,224 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 01:36:21,229 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 01:36:21,231 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 01:36:21,233 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 01:36:21,236 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 01:36:21,249 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 01:36:21,252 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 01:36:21,254 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 01:36:21,257 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 01:36:21,260 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 01:36:21,272 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 01:36:21,272 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 01:36:21,273 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 01:36:21,275 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 01:36:21,276 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 01:36:21,277 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 01:36:21,278 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 01:36:21,279 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 01:36:21,282 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 01:36:21,283 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 01:36:21,285 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 01:36:21,285 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 01:36:21,286 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 01:36:21,287 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 01:36:21,308 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 01:36:21,309 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 01:36:21,309 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 01:36:21,311 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dec8950-88dc-48eb-9c2c-49a0f39219b0/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-21 01:36:21,362 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 01:36:21,362 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 01:36:21,363 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 01:36:21,363 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 01:36:21,364 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 01:36:21,364 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 01:36:21,365 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 01:36:21,365 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 01:36:21,365 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 01:36:21,365 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 01:36:21,367 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 01:36:21,367 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 01:36:21,369 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 01:36:21,369 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 01:36:21,369 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 01:36:21,369 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 01:36:21,370 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 01:36:21,370 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 01:36:21,370 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 01:36:21,371 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-21 01:36:21,371 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-21 01:36:21,371 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 01:36:21,371 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 01:36:21,372 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 01:36:21,372 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 01:36:21,372 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 01:36:21,372 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-21 01:36:21,373 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 01:36:21,373 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:36:21,373 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 01:36:21,374 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 01:36:21,374 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 01:36:21,375 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-21 01:36:21,375 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-21 01:36:21,375 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 01:36:21,375 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 01:36:21,376 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 01:36:21,376 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_9dec8950-88dc-48eb-9c2c-49a0f39219b0/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dec8950-88dc-48eb-9c2c-49a0f39219b0/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4ba0922fbaee541ed4ded1889d0ea25cfcdd1e879f7757f1ef1aa76d5475dafa [2021-11-21 01:36:21,879 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 01:36:21,902 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 01:36:21,904 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 01:36:21,906 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 01:36:21,907 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 01:36:21,908 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dec8950-88dc-48eb-9c2c-49a0f39219b0/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/combinations/square_3+soft_float_4-2a.c.cil.c [2021-11-21 01:36:21,984 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dec8950-88dc-48eb-9c2c-49a0f39219b0/bin/utaipan-TEXQjIfE4P/data/b036b18df/cff2f1abdd8f422ca2993f679ad1853e/FLAGdc7664b6c [2021-11-21 01:36:22,584 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 01:36:22,585 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dec8950-88dc-48eb-9c2c-49a0f39219b0/sv-benchmarks/c/combinations/square_3+soft_float_4-2a.c.cil.c [2021-11-21 01:36:22,595 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dec8950-88dc-48eb-9c2c-49a0f39219b0/bin/utaipan-TEXQjIfE4P/data/b036b18df/cff2f1abdd8f422ca2993f679ad1853e/FLAGdc7664b6c [2021-11-21 01:36:22,879 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dec8950-88dc-48eb-9c2c-49a0f39219b0/bin/utaipan-TEXQjIfE4P/data/b036b18df/cff2f1abdd8f422ca2993f679ad1853e [2021-11-21 01:36:22,881 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 01:36:22,883 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 01:36:22,884 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 01:36:22,884 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 01:36:22,901 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 01:36:22,902 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:36:22" (1/1) ... [2021-11-21 01:36:22,903 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cf2ca79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:36:22, skipping insertion in model container [2021-11-21 01:36:22,903 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:36:22" (1/1) ... [2021-11-21 01:36:22,910 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 01:36:22,937 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:36:23,133 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_9dec8950-88dc-48eb-9c2c-49a0f39219b0/sv-benchmarks/c/combinations/square_3+soft_float_4-2a.c.cil.c[1999,2012] [2021-11-21 01:36:23,138 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_9dec8950-88dc-48eb-9c2c-49a0f39219b0/sv-benchmarks/c/combinations/square_3+soft_float_4-2a.c.cil.c[2393,2406] [2021-11-21 01:36:23,229 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:36:23,251 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 01:36:23,286 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_9dec8950-88dc-48eb-9c2c-49a0f39219b0/sv-benchmarks/c/combinations/square_3+soft_float_4-2a.c.cil.c[1999,2012] [2021-11-21 01:36:23,291 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_9dec8950-88dc-48eb-9c2c-49a0f39219b0/sv-benchmarks/c/combinations/square_3+soft_float_4-2a.c.cil.c[2393,2406] [2021-11-21 01:36:23,350 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:36:23,371 INFO L208 MainTranslator]: Completed translation [2021-11-21 01:36:23,371 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:36:23 WrapperNode [2021-11-21 01:36:23,372 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 01:36:23,374 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 01:36:23,374 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 01:36:23,374 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 01:36:23,383 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:36:23" (1/1) ... [2021-11-21 01:36:23,412 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:36:23" (1/1) ... [2021-11-21 01:36:23,437 INFO L137 Inliner]: procedures = 28, calls = 19, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 70 [2021-11-21 01:36:23,437 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 01:36:23,438 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 01:36:23,439 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 01:36:23,439 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 01:36:23,449 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:36:23" (1/1) ... [2021-11-21 01:36:23,449 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:36:23" (1/1) ... [2021-11-21 01:36:23,454 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:36:23" (1/1) ... [2021-11-21 01:36:23,455 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:36:23" (1/1) ... [2021-11-21 01:36:23,466 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:36:23" (1/1) ... [2021-11-21 01:36:23,472 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:36:23" (1/1) ... [2021-11-21 01:36:23,475 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:36:23" (1/1) ... [2021-11-21 01:36:23,480 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 01:36:23,481 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 01:36:23,481 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 01:36:23,481 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 01:36:23,482 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:36:23" (1/1) ... [2021-11-21 01:36:23,491 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:36:23,505 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dec8950-88dc-48eb-9c2c-49a0f39219b0/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:36:23,518 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dec8950-88dc-48eb-9c2c-49a0f39219b0/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 01:36:23,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dec8950-88dc-48eb-9c2c-49a0f39219b0/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 01:36:23,577 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 01:36:23,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-21 01:36:23,577 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2021-11-21 01:36:23,578 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2021-11-21 01:36:23,578 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2021-11-21 01:36:23,578 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2021-11-21 01:36:23,578 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 01:36:23,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 01:36:23,578 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-21 01:36:23,579 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-21 01:36:23,667 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 01:36:23,669 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 01:36:26,173 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 01:36:26,182 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 01:36:26,182 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-21 01:36:26,185 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:36:26 BoogieIcfgContainer [2021-11-21 01:36:26,185 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 01:36:26,191 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 01:36:26,191 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 01:36:26,195 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 01:36:26,195 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:36:22" (1/3) ... [2021-11-21 01:36:26,196 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@578d9864 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:36:26, skipping insertion in model container [2021-11-21 01:36:26,197 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:36:23" (2/3) ... [2021-11-21 01:36:26,197 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@578d9864 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:36:26, skipping insertion in model container [2021-11-21 01:36:26,197 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:36:26" (3/3) ... [2021-11-21 01:36:26,199 INFO L111 eAbstractionObserver]: Analyzing ICFG square_3+soft_float_4-2a.c.cil.c [2021-11-21 01:36:26,206 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 01:36:26,206 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-21 01:36:26,270 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 01:36:26,282 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-21 01:36:26,282 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-21 01:36:26,319 INFO L276 IsEmpty]: Start isEmpty. Operand has 63 states, 49 states have (on average 1.489795918367347) internal successors, (73), 51 states have internal predecessors, (73), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-21 01:36:26,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-21 01:36:26,324 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:36:26,325 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:36:26,325 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:36:26,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:36:26,332 INFO L85 PathProgramCache]: Analyzing trace with hash -548115930, now seen corresponding path program 1 times [2021-11-21 01:36:26,346 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:36:26,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1010765289] [2021-11-21 01:36:26,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:36:26,348 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:36:26,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dec8950-88dc-48eb-9c2c-49a0f39219b0/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:36:26,352 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dec8950-88dc-48eb-9c2c-49a0f39219b0/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:36:26,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dec8950-88dc-48eb-9c2c-49a0f39219b0/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-21 01:36:27,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:36:27,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-21 01:36:27,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:36:27,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:36:27,133 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:36:27,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:36:27,165 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:36:27,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1010765289] [2021-11-21 01:36:27,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1010765289] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:36:27,166 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:36:27,166 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-21 01:36:27,168 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506251284] [2021-11-21 01:36:27,169 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:36:27,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-21 01:36:27,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:36:27,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-21 01:36:27,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-21 01:36:27,209 INFO L87 Difference]: Start difference. First operand has 63 states, 49 states have (on average 1.489795918367347) internal successors, (73), 51 states have internal predecessors, (73), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:36:27,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:36:27,245 INFO L93 Difference]: Finished difference Result 121 states and 178 transitions. [2021-11-21 01:36:27,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-21 01:36:27,264 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 7 [2021-11-21 01:36:27,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:36:27,275 INFO L225 Difference]: With dead ends: 121 [2021-11-21 01:36:27,275 INFO L226 Difference]: Without dead ends: 56 [2021-11-21 01:36:27,280 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-21 01:36:27,284 INFO L933 BasicCegarLoop]: 81 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, 81 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 [2021-11-21 01:36:27,286 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 01:36:27,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-11-21 01:36:27,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2021-11-21 01:36:27,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 43 states have (on average 1.3488372093023255) internal successors, (58), 45 states have internal predecessors, (58), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-11-21 01:36:27,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 73 transitions. [2021-11-21 01:36:27,344 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 73 transitions. Word has length 7 [2021-11-21 01:36:27,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:36:27,344 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 73 transitions. [2021-11-21 01:36:27,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:36:27,345 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 73 transitions. [2021-11-21 01:36:27,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-21 01:36:27,346 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:36:27,346 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:36:27,373 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dec8950-88dc-48eb-9c2c-49a0f39219b0/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-21 01:36:27,568 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dec8950-88dc-48eb-9c2c-49a0f39219b0/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:36:27,569 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:36:27,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:36:27,570 INFO L85 PathProgramCache]: Analyzing trace with hash -548056348, now seen corresponding path program 1 times [2021-11-21 01:36:27,570 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:36:27,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [900004919] [2021-11-21 01:36:27,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:36:27,571 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:36:27,571 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dec8950-88dc-48eb-9c2c-49a0f39219b0/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:36:27,574 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dec8950-88dc-48eb-9c2c-49a0f39219b0/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:36:27,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dec8950-88dc-48eb-9c2c-49a0f39219b0/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-21 01:37:02,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-21 01:37:02,815 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-21 01:38:44,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-21 01:38:44,187 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-11-21 01:38:44,187 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-21 01:38:44,189 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-11-21 01:38:44,192 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-11-21 01:38:44,220 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dec8950-88dc-48eb-9c2c-49a0f39219b0/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-21 01:38:44,393 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dec8950-88dc-48eb-9c2c-49a0f39219b0/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:38:44,396 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-21 01:38:44,400 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-21 01:38:44,427 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 01:38:44 BoogieIcfgContainer [2021-11-21 01:38:44,427 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-21 01:38:44,428 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-21 01:38:44,428 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-21 01:38:44,429 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-21 01:38:44,429 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:36:26" (3/4) ... [2021-11-21 01:38:44,432 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-21 01:38:44,480 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dec8950-88dc-48eb-9c2c-49a0f39219b0/bin/utaipan-TEXQjIfE4P/witness.graphml [2021-11-21 01:38:44,480 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-21 01:38:44,481 INFO L158 Benchmark]: Toolchain (without parser) took 141598.18ms. Allocated memory is still 77.6MB. Free memory was 60.6MB in the beginning and 35.6MB in the end (delta: 25.0MB). Peak memory consumption was 25.9MB. Max. memory is 16.1GB. [2021-11-21 01:38:44,482 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 77.6MB. Free memory is still 57.8MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 01:38:44,482 INFO L158 Benchmark]: CACSL2BoogieTranslator took 488.37ms. Allocated memory is still 77.6MB. Free memory was 60.5MB in the beginning and 55.9MB in the end (delta: 4.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-21 01:38:44,483 INFO L158 Benchmark]: Boogie Procedure Inliner took 63.66ms. Allocated memory is still 77.6MB. Free memory was 55.9MB in the beginning and 54.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-21 01:38:44,484 INFO L158 Benchmark]: Boogie Preprocessor took 41.71ms. Allocated memory is still 77.6MB. Free memory was 54.2MB in the beginning and 52.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-21 01:38:44,485 INFO L158 Benchmark]: RCFGBuilder took 2704.19ms. Allocated memory is still 77.6MB. Free memory was 52.5MB in the beginning and 39.4MB in the end (delta: 13.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-21 01:38:44,485 INFO L158 Benchmark]: TraceAbstraction took 138236.43ms. Allocated memory is still 77.6MB. Free memory was 38.7MB in the beginning and 37.7MB in the end (delta: 1.0MB). Peak memory consumption was 2.5MB. Max. memory is 16.1GB. [2021-11-21 01:38:44,486 INFO L158 Benchmark]: Witness Printer took 52.21ms. Allocated memory is still 77.6MB. Free memory was 37.4MB in the beginning and 35.6MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-21 01:38:44,497 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 77.6MB. Free memory is still 57.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 488.37ms. Allocated memory is still 77.6MB. Free memory was 60.5MB in the beginning and 55.9MB in the end (delta: 4.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 63.66ms. Allocated memory is still 77.6MB. Free memory was 55.9MB in the beginning and 54.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 41.71ms. Allocated memory is still 77.6MB. Free memory was 54.2MB in the beginning and 52.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 2704.19ms. Allocated memory is still 77.6MB. Free memory was 52.5MB in the beginning and 39.4MB in the end (delta: 13.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 138236.43ms. Allocated memory is still 77.6MB. Free memory was 38.7MB in the beginning and 37.7MB in the end (delta: 1.0MB). Peak memory consumption was 2.5MB. Max. memory is 16.1GB. * Witness Printer took 52.21ms. Allocated memory is still 77.6MB. Free memory was 37.4MB in the beginning and 35.6MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 48]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L310] COND TRUE __VERIFIER_nondet_int() [L311] CALL main1() [L39] float IN = __VERIFIER_nondet_float(); [L40] CALL assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L34] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L40] RET assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L42] float x = IN; [L44-L45] float result = 1.0f + 0.5f*x - 0.125f*x*x + 0.0625f*x*x*x - 0.0390625f*x*x*x*x; VAL [IN=0.9999999403953552, result=1.3984375, x=0.9999999403953552] [L47] COND TRUE !(result >= 0.0f && result < 1.39843f) VAL [IN=0.9999999403953552, result=1.3984375, x=0.9999999403953552] [L48] reach_error() VAL [IN=0.9999999403953552, result=1.3984375, x=0.9999999403953552] - UnprovableResult [Line: 61]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 63 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 138.1s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 81 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 81 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=63occurred 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, 35.8s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 12 SizeOfPredicates, 0 NumberOfNonLiveVariables, 22 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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 proved your program to be incorrect! [2021-11-21 01:38:44,595 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dec8950-88dc-48eb-9c2c-49a0f39219b0/bin/utaipan-TEXQjIfE4P/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 Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE