./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/square_1+soft_float_1-2a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6522317-e426-4d65-a889-532c75f1150e/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6522317-e426-4d65-a889-532c75f1150e/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6522317-e426-4d65-a889-532c75f1150e/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6522317-e426-4d65-a889-532c75f1150e/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/square_1+soft_float_1-2a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6522317-e426-4d65-a889-532c75f1150e/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6522317-e426-4d65-a889-532c75f1150e/bin/utaipan-eEHZpOm5b7 --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 2f3d0efaf33b93df425f185e68aa4bb5fd862b42784228ced2cb70c663695e18 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 18:40:25,176 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 18:40:25,181 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 18:40:25,215 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 18:40:25,216 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 18:40:25,217 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 18:40:25,219 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 18:40:25,221 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 18:40:25,223 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 18:40:25,224 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 18:40:25,225 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 18:40:25,227 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 18:40:25,227 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 18:40:25,229 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 18:40:25,230 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 18:40:25,232 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 18:40:25,233 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 18:40:25,234 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 18:40:25,237 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 18:40:25,239 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 18:40:25,241 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 18:40:25,242 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 18:40:25,244 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 18:40:25,245 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 18:40:25,248 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 18:40:25,249 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 18:40:25,250 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 18:40:25,251 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 18:40:25,251 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 18:40:25,253 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 18:40:25,253 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 18:40:25,254 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 18:40:25,255 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 18:40:25,256 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 18:40:25,258 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 18:40:25,258 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 18:40:25,259 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 18:40:25,259 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 18:40:25,260 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 18:40:25,261 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 18:40:25,262 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 18:40:25,263 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6522317-e426-4d65-a889-532c75f1150e/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-25 18:40:25,291 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 18:40:25,292 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 18:40:25,292 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 18:40:25,292 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 18:40:25,293 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 18:40:25,293 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 18:40:25,293 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 18:40:25,293 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 18:40:25,293 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 18:40:25,293 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 18:40:25,293 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 18:40:25,294 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 18:40:25,294 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 18:40:25,294 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 18:40:25,294 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 18:40:25,294 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 18:40:25,294 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 18:40:25,294 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 18:40:25,295 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 18:40:25,295 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 18:40:25,295 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 18:40:25,295 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 18:40:25,295 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 18:40:25,295 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 18:40:25,296 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 18:40:25,296 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 18:40:25,296 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 18:40:25,296 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 18:40:25,296 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 18:40:25,296 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 18:40:25,297 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 18:40:25,297 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 18:40:25,297 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:40:25,297 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 18:40:25,297 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 18:40:25,298 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 18:40:25,298 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 18:40:25,298 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 18:40:25,298 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 18:40:25,298 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 18:40:25,299 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 18:40:25,299 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_b6522317-e426-4d65-a889-532c75f1150e/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6522317-e426-4d65-a889-532c75f1150e/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2f3d0efaf33b93df425f185e68aa4bb5fd862b42784228ced2cb70c663695e18 [2021-11-25 18:40:25,578 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 18:40:25,600 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 18:40:25,602 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 18:40:25,603 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 18:40:25,604 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 18:40:25,605 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6522317-e426-4d65-a889-532c75f1150e/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/combinations/square_1+soft_float_1-2a.c.cil.c [2021-11-25 18:40:25,679 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6522317-e426-4d65-a889-532c75f1150e/bin/utaipan-eEHZpOm5b7/data/5e719c2e5/f3168abf1a7b4c95a6dc1e8e42eaa98f/FLAG8fb835e34 [2021-11-25 18:40:26,125 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 18:40:26,125 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6522317-e426-4d65-a889-532c75f1150e/sv-benchmarks/c/combinations/square_1+soft_float_1-2a.c.cil.c [2021-11-25 18:40:26,136 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6522317-e426-4d65-a889-532c75f1150e/bin/utaipan-eEHZpOm5b7/data/5e719c2e5/f3168abf1a7b4c95a6dc1e8e42eaa98f/FLAG8fb835e34 [2021-11-25 18:40:26,149 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6522317-e426-4d65-a889-532c75f1150e/bin/utaipan-eEHZpOm5b7/data/5e719c2e5/f3168abf1a7b4c95a6dc1e8e42eaa98f [2021-11-25 18:40:26,154 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 18:40:26,155 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 18:40:26,170 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 18:40:26,170 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 18:40:26,177 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 18:40:26,178 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:40:26" (1/1) ... [2021-11-25 18:40:26,179 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c676935 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:40:26, skipping insertion in model container [2021-11-25 18:40:26,180 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:40:26" (1/1) ... [2021-11-25 18:40:26,186 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 18:40:26,217 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 18:40:26,393 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_b6522317-e426-4d65-a889-532c75f1150e/sv-benchmarks/c/combinations/square_1+soft_float_1-2a.c.cil.c[1996,2009] [2021-11-25 18:40:26,398 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_b6522317-e426-4d65-a889-532c75f1150e/sv-benchmarks/c/combinations/square_1+soft_float_1-2a.c.cil.c[2390,2403] [2021-11-25 18:40:26,441 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:40:26,449 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 18:40:26,464 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_b6522317-e426-4d65-a889-532c75f1150e/sv-benchmarks/c/combinations/square_1+soft_float_1-2a.c.cil.c[1996,2009] [2021-11-25 18:40:26,465 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_b6522317-e426-4d65-a889-532c75f1150e/sv-benchmarks/c/combinations/square_1+soft_float_1-2a.c.cil.c[2390,2403] [2021-11-25 18:40:26,495 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:40:26,516 INFO L208 MainTranslator]: Completed translation [2021-11-25 18:40:26,517 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:40:26 WrapperNode [2021-11-25 18:40:26,517 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 18:40:26,518 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 18:40:26,518 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 18:40:26,519 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 18:40:26,527 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:40:26" (1/1) ... [2021-11-25 18:40:26,547 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:40:26" (1/1) ... [2021-11-25 18:40:26,586 INFO L137 Inliner]: procedures = 27, calls = 20, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 169 [2021-11-25 18:40:26,587 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 18:40:26,588 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 18:40:26,589 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 18:40:26,589 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 18:40:26,598 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:40:26" (1/1) ... [2021-11-25 18:40:26,598 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:40:26" (1/1) ... [2021-11-25 18:40:26,617 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:40:26" (1/1) ... [2021-11-25 18:40:26,617 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:40:26" (1/1) ... [2021-11-25 18:40:26,624 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:40:26" (1/1) ... [2021-11-25 18:40:26,628 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:40:26" (1/1) ... [2021-11-25 18:40:26,630 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:40:26" (1/1) ... [2021-11-25 18:40:26,633 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 18:40:26,634 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 18:40:26,634 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 18:40:26,634 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 18:40:26,643 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:40:26" (1/1) ... [2021-11-25 18:40:26,656 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:40:26,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6522317-e426-4d65-a889-532c75f1150e/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:40:26,692 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6522317-e426-4d65-a889-532c75f1150e/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 18:40:26,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6522317-e426-4d65-a889-532c75f1150e/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 18:40:26,743 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 18:40:26,744 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2021-11-25 18:40:26,744 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2021-11-25 18:40:26,744 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 18:40:26,744 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 18:40:26,744 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 18:40:26,744 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-25 18:40:26,745 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-25 18:40:26,842 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 18:40:26,844 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 18:40:27,224 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 18:40:27,336 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 18:40:27,336 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-25 18:40:27,339 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:40:27 BoogieIcfgContainer [2021-11-25 18:40:27,339 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 18:40:27,341 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 18:40:27,341 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 18:40:27,344 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 18:40:27,345 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:40:26" (1/3) ... [2021-11-25 18:40:27,346 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35828417 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:40:27, skipping insertion in model container [2021-11-25 18:40:27,346 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:40:26" (2/3) ... [2021-11-25 18:40:27,346 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35828417 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:40:27, skipping insertion in model container [2021-11-25 18:40:27,346 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:40:27" (3/3) ... [2021-11-25 18:40:27,348 INFO L111 eAbstractionObserver]: Analyzing ICFG square_1+soft_float_1-2a.c.cil.c [2021-11-25 18:40:27,353 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 18:40:27,353 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-25 18:40:27,434 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 18:40:27,440 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 [2021-11-25 18:40:27,440 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-25 18:40:27,458 INFO L276 IsEmpty]: Start isEmpty. Operand has 51 states, 38 states have (on average 1.5526315789473684) internal successors, (59), 42 states have internal predecessors, (59), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-25 18:40:27,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-25 18:40:27,462 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:40:27,462 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-25 18:40:27,463 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:40:27,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:40:27,468 INFO L85 PathProgramCache]: Analyzing trace with hash 9849864, now seen corresponding path program 1 times [2021-11-25 18:40:27,478 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:40:27,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670771439] [2021-11-25 18:40:27,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:40:27,480 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:40:27,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 18:40:27,572 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-25 18:40:27,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 18:40:27,601 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-25 18:40:27,604 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-25 18:40:27,605 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-11-25 18:40:27,607 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-11-25 18:40:27,607 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 18:40:27,612 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2021-11-25 18:40:27,614 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-25 18:40:27,632 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 06:40:27 BoogieIcfgContainer [2021-11-25 18:40:27,632 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-25 18:40:27,633 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-25 18:40:27,633 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-25 18:40:27,633 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-25 18:40:27,634 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:40:27" (3/4) ... [2021-11-25 18:40:27,637 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-25 18:40:27,637 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-25 18:40:27,638 INFO L158 Benchmark]: Toolchain (without parser) took 1482.43ms. Allocated memory was 90.2MB in the beginning and 109.1MB in the end (delta: 18.9MB). Free memory was 48.3MB in the beginning and 75.2MB in the end (delta: -26.9MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 18:40:27,639 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 90.2MB. Free memory was 65.4MB in the beginning and 65.3MB in the end (delta: 42.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 18:40:27,640 INFO L158 Benchmark]: CACSL2BoogieTranslator took 347.46ms. Allocated memory is still 90.2MB. Free memory was 69.1MB in the beginning and 61.2MB in the end (delta: 7.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-25 18:40:27,640 INFO L158 Benchmark]: Boogie Procedure Inliner took 68.78ms. Allocated memory is still 90.2MB. Free memory was 61.2MB in the beginning and 59.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 18:40:27,641 INFO L158 Benchmark]: Boogie Preprocessor took 44.92ms. Allocated memory is still 90.2MB. Free memory was 59.1MB in the beginning and 57.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 18:40:27,642 INFO L158 Benchmark]: RCFGBuilder took 705.37ms. Allocated memory is still 90.2MB. Free memory was 57.4MB in the beginning and 35.1MB in the end (delta: 22.3MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2021-11-25 18:40:27,642 INFO L158 Benchmark]: TraceAbstraction took 291.35ms. Allocated memory was 90.2MB in the beginning and 109.1MB in the end (delta: 18.9MB). Free memory was 34.6MB in the beginning and 75.2MB in the end (delta: -40.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 18:40:27,643 INFO L158 Benchmark]: Witness Printer took 4.04ms. Allocated memory is still 109.1MB. Free memory is still 75.2MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 18:40:27,646 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 90.2MB. Free memory was 65.4MB in the beginning and 65.3MB in the end (delta: 42.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 347.46ms. Allocated memory is still 90.2MB. Free memory was 69.1MB in the beginning and 61.2MB in the end (delta: 7.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 68.78ms. Allocated memory is still 90.2MB. Free memory was 61.2MB in the beginning and 59.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 44.92ms. Allocated memory is still 90.2MB. Free memory was 59.1MB in the beginning and 57.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 705.37ms. Allocated memory is still 90.2MB. Free memory was 57.4MB in the beginning and 35.1MB in the end (delta: 22.3MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 291.35ms. Allocated memory was 90.2MB in the beginning and 109.1MB in the end (delta: 18.9MB). Free memory was 34.6MB in the beginning and 75.2MB in the end (delta: -40.5MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.04ms. Allocated memory is still 109.1MB. Free memory is still 75.2MB. 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: [L403] COND TRUE __VERIFIER_nondet_int() [L404] 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 < 1.39f) 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 3 procedures, 51 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, 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=51occurred 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 [2021-11-25 18:40:27,695 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6522317-e426-4d65-a889-532c75f1150e/bin/utaipan-eEHZpOm5b7/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_b6522317-e426-4d65-a889-532c75f1150e/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6522317-e426-4d65-a889-532c75f1150e/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6522317-e426-4d65-a889-532c75f1150e/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6522317-e426-4d65-a889-532c75f1150e/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/square_1+soft_float_1-2a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6522317-e426-4d65-a889-532c75f1150e/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6522317-e426-4d65-a889-532c75f1150e/bin/utaipan-eEHZpOm5b7 --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 2f3d0efaf33b93df425f185e68aa4bb5fd862b42784228ced2cb70c663695e18 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 18:40:30,031 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 18:40:30,036 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 18:40:30,085 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 18:40:30,086 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 18:40:30,089 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 18:40:30,091 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 18:40:30,095 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 18:40:30,099 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 18:40:30,106 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 18:40:30,108 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 18:40:30,110 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 18:40:30,110 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 18:40:30,113 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 18:40:30,115 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 18:40:30,120 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 18:40:30,121 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 18:40:30,122 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 18:40:30,124 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 18:40:30,132 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 18:40:30,134 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 18:40:30,135 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 18:40:30,138 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 18:40:30,140 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 18:40:30,149 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 18:40:30,149 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 18:40:30,150 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 18:40:30,152 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 18:40:30,152 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 18:40:30,153 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 18:40:30,154 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 18:40:30,154 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 18:40:30,156 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 18:40:30,157 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 18:40:30,158 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 18:40:30,159 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 18:40:30,160 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 18:40:30,160 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 18:40:30,160 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 18:40:30,162 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 18:40:30,163 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 18:40:30,168 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6522317-e426-4d65-a889-532c75f1150e/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-25 18:40:30,211 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 18:40:30,212 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 18:40:30,212 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 18:40:30,213 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 18:40:30,214 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 18:40:30,214 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 18:40:30,214 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 18:40:30,214 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 18:40:30,214 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 18:40:30,215 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 18:40:30,216 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 18:40:30,216 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 18:40:30,218 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 18:40:30,218 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 18:40:30,219 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 18:40:30,220 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 18:40:30,220 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 18:40:30,220 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 18:40:30,221 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 18:40:30,222 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-25 18:40:30,222 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-25 18:40:30,228 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-25 18:40:30,228 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 18:40:30,230 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 18:40:30,230 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 18:40:30,231 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 18:40:30,231 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 18:40:30,232 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-25 18:40:30,232 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 18:40:30,232 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:40:30,232 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 18:40:30,232 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 18:40:30,233 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 18:40:30,233 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-25 18:40:30,234 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-25 18:40:30,234 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 18:40:30,234 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 18:40:30,235 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 18:40:30,235 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_b6522317-e426-4d65-a889-532c75f1150e/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6522317-e426-4d65-a889-532c75f1150e/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2f3d0efaf33b93df425f185e68aa4bb5fd862b42784228ced2cb70c663695e18 [2021-11-25 18:40:30,606 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 18:40:30,641 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 18:40:30,644 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 18:40:30,648 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 18:40:30,648 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 18:40:30,650 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6522317-e426-4d65-a889-532c75f1150e/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/combinations/square_1+soft_float_1-2a.c.cil.c [2021-11-25 18:40:30,713 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6522317-e426-4d65-a889-532c75f1150e/bin/utaipan-eEHZpOm5b7/data/ad4939ecb/2c8732730e7248e78369415b215a3d5b/FLAGcb99b06e8 [2021-11-25 18:40:31,200 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 18:40:31,201 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6522317-e426-4d65-a889-532c75f1150e/sv-benchmarks/c/combinations/square_1+soft_float_1-2a.c.cil.c [2021-11-25 18:40:31,214 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6522317-e426-4d65-a889-532c75f1150e/bin/utaipan-eEHZpOm5b7/data/ad4939ecb/2c8732730e7248e78369415b215a3d5b/FLAGcb99b06e8 [2021-11-25 18:40:31,541 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6522317-e426-4d65-a889-532c75f1150e/bin/utaipan-eEHZpOm5b7/data/ad4939ecb/2c8732730e7248e78369415b215a3d5b [2021-11-25 18:40:31,545 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 18:40:31,547 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 18:40:31,549 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 18:40:31,549 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 18:40:31,552 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 18:40:31,554 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:40:31" (1/1) ... [2021-11-25 18:40:31,555 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@799a8756 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:40:31, skipping insertion in model container [2021-11-25 18:40:31,555 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:40:31" (1/1) ... [2021-11-25 18:40:31,563 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 18:40:31,621 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 18:40:31,837 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_b6522317-e426-4d65-a889-532c75f1150e/sv-benchmarks/c/combinations/square_1+soft_float_1-2a.c.cil.c[1996,2009] [2021-11-25 18:40:31,844 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_b6522317-e426-4d65-a889-532c75f1150e/sv-benchmarks/c/combinations/square_1+soft_float_1-2a.c.cil.c[2390,2403] [2021-11-25 18:40:31,942 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:40:31,962 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 18:40:31,992 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_b6522317-e426-4d65-a889-532c75f1150e/sv-benchmarks/c/combinations/square_1+soft_float_1-2a.c.cil.c[1996,2009] [2021-11-25 18:40:31,993 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_b6522317-e426-4d65-a889-532c75f1150e/sv-benchmarks/c/combinations/square_1+soft_float_1-2a.c.cil.c[2390,2403] [2021-11-25 18:40:32,021 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:40:32,036 INFO L208 MainTranslator]: Completed translation [2021-11-25 18:40:32,037 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:40:32 WrapperNode [2021-11-25 18:40:32,037 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 18:40:32,038 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 18:40:32,038 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 18:40:32,038 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 18:40:32,045 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:40:32" (1/1) ... [2021-11-25 18:40:32,058 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:40:32" (1/1) ... [2021-11-25 18:40:32,085 INFO L137 Inliner]: procedures = 28, calls = 20, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 165 [2021-11-25 18:40:32,085 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 18:40:32,086 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 18:40:32,086 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 18:40:32,086 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 18:40:32,094 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:40:32" (1/1) ... [2021-11-25 18:40:32,095 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:40:32" (1/1) ... [2021-11-25 18:40:32,100 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:40:32" (1/1) ... [2021-11-25 18:40:32,100 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:40:32" (1/1) ... [2021-11-25 18:40:32,110 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:40:32" (1/1) ... [2021-11-25 18:40:32,115 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:40:32" (1/1) ... [2021-11-25 18:40:32,136 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:40:32" (1/1) ... [2021-11-25 18:40:32,140 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 18:40:32,141 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 18:40:32,142 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 18:40:32,142 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 18:40:32,142 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:40:32" (1/1) ... [2021-11-25 18:40:32,159 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:40:32,174 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6522317-e426-4d65-a889-532c75f1150e/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:40:32,184 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6522317-e426-4d65-a889-532c75f1150e/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 18:40:32,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6522317-e426-4d65-a889-532c75f1150e/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 18:40:32,227 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 18:40:32,228 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-25 18:40:32,228 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2021-11-25 18:40:32,228 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2021-11-25 18:40:32,228 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 18:40:32,229 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 18:40:32,229 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-25 18:40:32,229 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-25 18:40:32,353 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 18:40:32,355 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 18:40:34,855 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 18:40:34,864 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 18:40:34,864 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-25 18:40:34,866 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:40:34 BoogieIcfgContainer [2021-11-25 18:40:34,867 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 18:40:34,869 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 18:40:34,869 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 18:40:34,872 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 18:40:34,872 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:40:31" (1/3) ... [2021-11-25 18:40:34,873 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@622cc725 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:40:34, skipping insertion in model container [2021-11-25 18:40:34,873 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:40:32" (2/3) ... [2021-11-25 18:40:34,874 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@622cc725 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:40:34, skipping insertion in model container [2021-11-25 18:40:34,874 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:40:34" (3/3) ... [2021-11-25 18:40:34,875 INFO L111 eAbstractionObserver]: Analyzing ICFG square_1+soft_float_1-2a.c.cil.c [2021-11-25 18:40:34,881 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 18:40:34,882 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-25 18:40:34,947 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 18:40:34,957 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 [2021-11-25 18:40:34,957 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-25 18:40:34,974 INFO L276 IsEmpty]: Start isEmpty. Operand has 81 states, 68 states have (on average 1.588235294117647) internal successors, (108), 72 states have internal predecessors, (108), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-25 18:40:34,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-25 18:40:34,978 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:40:34,979 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:40:34,979 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:40:34,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:40:34,985 INFO L85 PathProgramCache]: Analyzing trace with hash -548115930, now seen corresponding path program 1 times [2021-11-25 18:40:34,995 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 18:40:34,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1662249057] [2021-11-25 18:40:34,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:40:34,997 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 18:40:34,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6522317-e426-4d65-a889-532c75f1150e/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 18:40:35,001 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6522317-e426-4d65-a889-532c75f1150e/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 18:40:35,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6522317-e426-4d65-a889-532c75f1150e/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-25 18:40:35,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:40:35,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-25 18:40:35,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:40:35,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:40:35,561 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:40:35,562 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 18:40:35,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1662249057] [2021-11-25 18:40:35,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1662249057] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:40:35,563 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:40:35,564 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 18:40:35,565 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314426111] [2021-11-25 18:40:35,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:40:35,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-25 18:40:35,570 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 18:40:35,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-25 18:40:35,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-25 18:40:35,606 INFO L87 Difference]: Start difference. First operand has 81 states, 68 states have (on average 1.588235294117647) internal successors, (108), 72 states have internal predecessors, (108), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 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) [2021-11-25 18:40:35,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:40:35,637 INFO L93 Difference]: Finished difference Result 157 states and 248 transitions. [2021-11-25 18:40:35,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 18:40:35,640 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 [2021-11-25 18:40:35,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:40:35,648 INFO L225 Difference]: With dead ends: 157 [2021-11-25 18:40:35,649 INFO L226 Difference]: Without dead ends: 74 [2021-11-25 18:40:35,653 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-25 18:40:35,656 INFO L933 BasicCegarLoop]: 116 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, 116 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 [2021-11-25 18:40:35,657 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 18:40:35,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-11-25 18:40:35,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2021-11-25 18:40:35,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 62 states have (on average 1.4838709677419355) internal successors, (92), 65 states have internal predecessors, (92), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-11-25 18:40:35,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 107 transitions. [2021-11-25 18:40:35,701 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 107 transitions. Word has length 7 [2021-11-25 18:40:35,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:40:35,702 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 107 transitions. [2021-11-25 18:40:35,702 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) [2021-11-25 18:40:35,702 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 107 transitions. [2021-11-25 18:40:35,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-25 18:40:35,703 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:40:35,703 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:40:35,734 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6522317-e426-4d65-a889-532c75f1150e/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-25 18:40:35,923 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6522317-e426-4d65-a889-532c75f1150e/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 18:40:35,924 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:40:35,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:40:35,925 INFO L85 PathProgramCache]: Analyzing trace with hash -548056348, now seen corresponding path program 1 times [2021-11-25 18:40:35,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 18:40:35,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1358983641] [2021-11-25 18:40:35,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:40:35,926 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 18:40:35,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6522317-e426-4d65-a889-532c75f1150e/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 18:40:35,930 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6522317-e426-4d65-a889-532c75f1150e/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 18:40:35,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6522317-e426-4d65-a889-532c75f1150e/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-25 18:41:31,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 18:41:31,586 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-25 18:43:10,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 18:43:10,692 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-11-25 18:43:10,692 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-25 18:43:10,694 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-11-25 18:43:10,695 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-11-25 18:43:10,731 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6522317-e426-4d65-a889-532c75f1150e/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-25 18:43:10,896 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6522317-e426-4d65-a889-532c75f1150e/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 18:43:10,899 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-25 18:43:10,901 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-25 18:43:10,921 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 06:43:10 BoogieIcfgContainer [2021-11-25 18:43:10,921 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-25 18:43:10,922 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-25 18:43:10,922 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-25 18:43:10,923 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-25 18:43:10,923 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:40:34" (3/4) ... [2021-11-25 18:43:10,926 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-25 18:43:10,977 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6522317-e426-4d65-a889-532c75f1150e/bin/utaipan-eEHZpOm5b7/witness.graphml [2021-11-25 18:43:10,979 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-25 18:43:10,980 INFO L158 Benchmark]: Toolchain (without parser) took 159432.37ms. Allocated memory is still 75.5MB. Free memory was 56.8MB in the beginning and 32.7MB in the end (delta: 24.1MB). Peak memory consumption was 24.3MB. Max. memory is 16.1GB. [2021-11-25 18:43:10,980 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 75.5MB. Free memory is still 55.7MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 18:43:10,981 INFO L158 Benchmark]: CACSL2BoogieTranslator took 488.48ms. Allocated memory is still 75.5MB. Free memory was 56.6MB in the beginning and 52.6MB in the end (delta: 4.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-25 18:43:10,981 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.37ms. Allocated memory is still 75.5MB. Free memory was 52.6MB in the beginning and 50.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 18:43:10,981 INFO L158 Benchmark]: Boogie Preprocessor took 54.80ms. Allocated memory is still 75.5MB. Free memory was 50.5MB in the beginning and 48.7MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 18:43:10,986 INFO L158 Benchmark]: RCFGBuilder took 2725.25ms. Allocated memory is still 75.5MB. Free memory was 48.7MB in the beginning and 33.4MB in the end (delta: 15.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2021-11-25 18:43:10,987 INFO L158 Benchmark]: TraceAbstraction took 156052.83ms. Allocated memory is still 75.5MB. Free memory was 33.0MB in the beginning and 34.8MB in the end (delta: -1.8MB). Peak memory consumption was 634.8kB. Max. memory is 16.1GB. [2021-11-25 18:43:10,987 INFO L158 Benchmark]: Witness Printer took 57.03ms. Allocated memory is still 75.5MB. Free memory was 34.5MB in the beginning and 33.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 18:43:10,989 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 75.5MB. Free memory is still 55.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 488.48ms. Allocated memory is still 75.5MB. Free memory was 56.6MB in the beginning and 52.6MB in the end (delta: 4.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 47.37ms. Allocated memory is still 75.5MB. Free memory was 52.6MB in the beginning and 50.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 54.80ms. Allocated memory is still 75.5MB. Free memory was 50.5MB in the beginning and 48.7MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 2725.25ms. Allocated memory is still 75.5MB. Free memory was 48.7MB in the beginning and 33.4MB in the end (delta: 15.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 156052.83ms. Allocated memory is still 75.5MB. Free memory was 33.0MB in the beginning and 34.8MB in the end (delta: -1.8MB). Peak memory consumption was 634.8kB. Max. memory is 16.1GB. * Witness Printer took 57.03ms. Allocated memory is still 75.5MB. Free memory was 34.5MB in the beginning and 33.0MB in the end (delta: 1.5MB). 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: [L403] COND TRUE __VERIFIER_nondet_int() [L404] 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=0.9989829659461975, result=1.3981512784957886, x=0.9989829659461975] [L47] COND TRUE !(result >= 0.0f && result < 1.39f) VAL [IN=0.9989829659461975, result=1.3981512784957886, x=0.9989829659461975] [L48] reach_error() VAL [IN=0.9989829659461975, result=1.3981512784957886, x=0.9989829659461975] - 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 3 procedures, 81 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 156.0s, 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, 116 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, 116 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=81occurred 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, 56.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 6 SizeOfPredicates, 0 NumberOfNonLiveVariables, 22 ConjunctsInSsa, 1 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 proved your program to be incorrect! [2021-11-25 18:43:11,074 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6522317-e426-4d65-a889-532c75f1150e/bin/utaipan-eEHZpOm5b7/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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE