./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/nan_double.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe8f1f6d-93b1-4bad-81d3-245d87862226/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe8f1f6d-93b1-4bad-81d3-245d87862226/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe8f1f6d-93b1-4bad-81d3-245d87862226/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe8f1f6d-93b1-4bad-81d3-245d87862226/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/nan_double.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe8f1f6d-93b1-4bad-81d3-245d87862226/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe8f1f6d-93b1-4bad-81d3-245d87862226/bin/utaipan-q2qaUkNPG8 --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 e70fb0031ee54295dcc583b462c02b21fc0481d0 .............................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe8f1f6d-93b1-4bad-81d3-245d87862226/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe8f1f6d-93b1-4bad-81d3-245d87862226/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe8f1f6d-93b1-4bad-81d3-245d87862226/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe8f1f6d-93b1-4bad-81d3-245d87862226/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/nan_double.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe8f1f6d-93b1-4bad-81d3-245d87862226/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe8f1f6d-93b1-4bad-81d3-245d87862226/bin/utaipan-q2qaUkNPG8 --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 e70fb0031ee54295dcc583b462c02b21fc0481d0 .............................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 06:59:09,100 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 06:59:09,104 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 06:59:09,172 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 06:59:09,173 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 06:59:09,177 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 06:59:09,183 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 06:59:09,190 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 06:59:09,193 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 06:59:09,203 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 06:59:09,205 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 06:59:09,208 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 06:59:09,208 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 06:59:09,213 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 06:59:09,218 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 06:59:09,225 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 06:59:09,230 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 06:59:09,232 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 06:59:09,235 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 06:59:09,240 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 06:59:09,246 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 06:59:09,248 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 06:59:09,252 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 06:59:09,253 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 06:59:09,265 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 06:59:09,265 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 06:59:09,266 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 06:59:09,268 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 06:59:09,270 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 06:59:09,271 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 06:59:09,272 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 06:59:09,274 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 06:59:09,276 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 06:59:09,278 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 06:59:09,280 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 06:59:09,280 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 06:59:09,281 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 06:59:09,281 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 06:59:09,282 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 06:59:09,283 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 06:59:09,284 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 06:59:09,285 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe8f1f6d-93b1-4bad-81d3-245d87862226/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-13 06:59:09,339 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 06:59:09,339 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 06:59:09,341 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 06:59:09,341 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 06:59:09,342 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 06:59:09,342 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 06:59:09,342 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 06:59:09,343 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 06:59:09,350 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 06:59:09,351 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 06:59:09,352 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 06:59:09,352 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 06:59:09,353 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 06:59:09,353 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 06:59:09,353 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 06:59:09,354 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 06:59:09,354 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 06:59:09,355 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 06:59:09,355 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 06:59:09,355 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 06:59:09,356 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 06:59:09,356 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 06:59:09,356 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 06:59:09,356 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 06:59:09,357 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 06:59:09,357 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 06:59:09,357 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 06:59:09,358 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 06:59:09,358 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 06:59:09,360 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 06:59:09,361 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 06:59:09,361 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 06:59:09,362 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 06:59:09,362 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 06:59:09,362 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 06:59:09,362 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 06:59:09,363 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 06:59:09,363 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 06:59:09,363 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 06:59:09,364 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_fe8f1f6d-93b1-4bad-81d3-245d87862226/bin/utaipan-q2qaUkNPG8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe8f1f6d-93b1-4bad-81d3-245d87862226/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e70fb0031ee54295dcc583b462c02b21fc0481d0 [2021-10-13 06:59:09,696 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 06:59:09,730 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 06:59:09,735 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 06:59:09,736 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 06:59:09,737 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 06:59:09,738 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe8f1f6d-93b1-4bad-81d3-245d87862226/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/float-benchs/nan_double.c [2021-10-13 06:59:09,829 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe8f1f6d-93b1-4bad-81d3-245d87862226/bin/utaipan-q2qaUkNPG8/data/22241d986/4564816b346540659f545ea99450f7aa/FLAG3341fc18d [2021-10-13 06:59:10,343 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 06:59:10,344 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe8f1f6d-93b1-4bad-81d3-245d87862226/sv-benchmarks/c/float-benchs/nan_double.c [2021-10-13 06:59:10,350 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe8f1f6d-93b1-4bad-81d3-245d87862226/bin/utaipan-q2qaUkNPG8/data/22241d986/4564816b346540659f545ea99450f7aa/FLAG3341fc18d [2021-10-13 06:59:10,701 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe8f1f6d-93b1-4bad-81d3-245d87862226/bin/utaipan-q2qaUkNPG8/data/22241d986/4564816b346540659f545ea99450f7aa [2021-10-13 06:59:10,703 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 06:59:10,705 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 06:59:10,707 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 06:59:10,707 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 06:59:10,711 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 06:59:10,712 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:59:10" (1/1) ... [2021-10-13 06:59:10,713 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43c688a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:59:10, skipping insertion in model container [2021-10-13 06:59:10,714 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:59:10" (1/1) ... [2021-10-13 06:59:10,720 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 06:59:10,732 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 06:59:10,902 WARN L228 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_fe8f1f6d-93b1-4bad-81d3-245d87862226/sv-benchmarks/c/float-benchs/nan_double.c[434,447] [2021-10-13 06:59:10,922 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 06:59:10,937 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 06:59:10,963 WARN L228 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_fe8f1f6d-93b1-4bad-81d3-245d87862226/sv-benchmarks/c/float-benchs/nan_double.c[434,447] [2021-10-13 06:59:10,965 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 06:59:10,982 INFO L208 MainTranslator]: Completed translation [2021-10-13 06:59:10,983 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:59:10 WrapperNode [2021-10-13 06:59:10,983 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 06:59:10,984 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 06:59:10,985 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 06:59:10,985 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 06:59:10,997 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:59:10" (1/1) ... [2021-10-13 06:59:11,009 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:59:10" (1/1) ... [2021-10-13 06:59:11,035 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 06:59:11,037 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 06:59:11,038 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 06:59:11,038 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 06:59:11,048 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:59:10" (1/1) ... [2021-10-13 06:59:11,048 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:59:10" (1/1) ... [2021-10-13 06:59:11,051 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:59:10" (1/1) ... [2021-10-13 06:59:11,051 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:59:10" (1/1) ... [2021-10-13 06:59:11,060 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:59:10" (1/1) ... [2021-10-13 06:59:11,063 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:59:10" (1/1) ... [2021-10-13 06:59:11,065 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:59:10" (1/1) ... [2021-10-13 06:59:11,074 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 06:59:11,076 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 06:59:11,079 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 06:59:11,079 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 06:59:11,081 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:59:10" (1/1) ... [2021-10-13 06:59:11,090 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 06:59:11,104 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe8f1f6d-93b1-4bad-81d3-245d87862226/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 06:59:11,129 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe8f1f6d-93b1-4bad-81d3-245d87862226/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 06:59:11,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe8f1f6d-93b1-4bad-81d3-245d87862226/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 06:59:11,190 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 06:59:11,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 06:59:11,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 06:59:11,191 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 06:59:11,475 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 06:59:11,476 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-10-13 06:59:11,478 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:59:11 BoogieIcfgContainer [2021-10-13 06:59:11,479 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 06:59:11,481 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 06:59:11,482 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 06:59:11,488 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 06:59:11,488 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 06:59:10" (1/3) ... [2021-10-13 06:59:11,489 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60d57be1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:59:11, skipping insertion in model container [2021-10-13 06:59:11,491 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:59:10" (2/3) ... [2021-10-13 06:59:11,491 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60d57be1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:59:11, skipping insertion in model container [2021-10-13 06:59:11,491 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:59:11" (3/3) ... [2021-10-13 06:59:11,493 INFO L111 eAbstractionObserver]: Analyzing ICFG nan_double.c [2021-10-13 06:59:11,500 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 06:59:11,500 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 06:59:11,562 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 06:59:11,569 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, mConcurrency=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 [2021-10-13 06:59:11,569 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 06:59:11,589 INFO L276 IsEmpty]: Start isEmpty. Operand has 6 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 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) [2021-10-13 06:59:11,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-13 06:59:11,598 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:59:11,599 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-13 06:59:11,600 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 06:59:11,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:59:11,607 INFO L82 PathProgramCache]: Analyzing trace with hash 47251, now seen corresponding path program 1 times [2021-10-13 06:59:11,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 06:59:11,618 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093938013] [2021-10-13 06:59:11,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:59:11,620 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 06:59:11,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 06:59:11,727 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 06:59:11,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 06:59:11,774 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-13 06:59:11,777 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-13 06:59:11,778 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 06:59:11,781 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 06:59:11,789 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 06:59:11,806 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 06:59:11 BoogieIcfgContainer [2021-10-13 06:59:11,806 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 06:59:11,807 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 06:59:11,808 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 06:59:11,808 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 06:59:11,809 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:59:11" (3/4) ... [2021-10-13 06:59:11,812 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-13 06:59:11,812 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 06:59:11,815 INFO L168 Benchmark]: Toolchain (without parser) took 1108.61 ms. Allocated memory is still 90.2 MB. Free memory was 54.9 MB in the beginning and 40.7 MB in the end (delta: 14.2 MB). Peak memory consumption was 11.8 MB. Max. memory is 16.1 GB. [2021-10-13 06:59:11,816 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 90.2 MB. Free memory was 59.8 MB in the beginning and 59.7 MB in the end (delta: 21.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 06:59:11,817 INFO L168 Benchmark]: CACSL2BoogieTranslator took 276.64 ms. Allocated memory is still 90.2 MB. Free memory was 54.7 MB in the beginning and 65.6 MB in the end (delta: -10.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 06:59:11,818 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.67 ms. Allocated memory is still 90.2 MB. Free memory was 65.6 MB in the beginning and 64.5 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 06:59:11,818 INFO L168 Benchmark]: Boogie Preprocessor took 37.70 ms. Allocated memory is still 90.2 MB. Free memory was 64.2 MB in the beginning and 63.4 MB in the end (delta: 710.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 06:59:11,819 INFO L168 Benchmark]: RCFGBuilder took 403.19 ms. Allocated memory is still 90.2 MB. Free memory was 63.4 MB in the beginning and 54.1 MB in the end (delta: 9.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 06:59:11,820 INFO L168 Benchmark]: TraceAbstraction took 324.87 ms. Allocated memory is still 90.2 MB. Free memory was 53.7 MB in the beginning and 41.1 MB in the end (delta: 12.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-13 06:59:11,821 INFO L168 Benchmark]: Witness Printer took 5.27 ms. Allocated memory is still 90.2 MB. Free memory was 41.1 MB in the beginning and 40.7 MB in the end (delta: 354.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 06:59:11,826 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 90.2 MB. Free memory was 59.8 MB in the beginning and 59.7 MB in the end (delta: 21.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 276.64 ms. Allocated memory is still 90.2 MB. Free memory was 54.7 MB in the beginning and 65.6 MB in the end (delta: -10.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 51.67 ms. Allocated memory is still 90.2 MB. Free memory was 65.6 MB in the beginning and 64.5 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 37.70 ms. Allocated memory is still 90.2 MB. Free memory was 64.2 MB in the beginning and 63.4 MB in the end (delta: 710.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 403.19 ms. Allocated memory is still 90.2 MB. Free memory was 63.4 MB in the beginning and 54.1 MB in the end (delta: 9.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 324.87 ms. Allocated memory is still 90.2 MB. Free memory was 53.7 MB in the beginning and 41.1 MB in the end (delta: 12.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Witness Printer took 5.27 ms. Allocated memory is still 90.2 MB. Free memory was 41.1 MB in the beginning and 40.7 MB in the end (delta: 354.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 8]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 15. Possible FailurePath: [L12] double x; [L13] x = __VERIFIER_nondet_double() [L8] COND TRUE !(cond) [L8] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 226.5ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 18.2ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 10.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=6occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 5.9ms SsaConstructionTime, 44.4ms SatisfiabilityAnalysisTime, 0.0ms InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 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 [2021-10-13 06:59:11,877 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe8f1f6d-93b1-4bad-81d3-245d87862226/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 06:59:14,790 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 06:59:14,795 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 06:59:14,868 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 06:59:14,869 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 06:59:14,873 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 06:59:14,876 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 06:59:14,881 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 06:59:14,885 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 06:59:14,895 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 06:59:14,897 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 06:59:14,899 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 06:59:14,900 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 06:59:14,903 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 06:59:14,906 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 06:59:14,912 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 06:59:14,914 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 06:59:14,915 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 06:59:14,918 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 06:59:14,929 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 06:59:14,931 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 06:59:14,932 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 06:59:14,936 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 06:59:14,939 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 06:59:14,949 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 06:59:14,950 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 06:59:14,951 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 06:59:14,953 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 06:59:14,954 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 06:59:14,955 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 06:59:14,956 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 06:59:14,957 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 06:59:14,959 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 06:59:14,961 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 06:59:14,963 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 06:59:14,963 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 06:59:14,964 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 06:59:14,965 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 06:59:14,977 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 06:59:14,979 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 06:59:14,980 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 06:59:14,981 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe8f1f6d-93b1-4bad-81d3-245d87862226/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-13 06:59:15,033 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 06:59:15,033 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 06:59:15,035 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 06:59:15,035 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 06:59:15,035 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 06:59:15,036 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 06:59:15,036 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 06:59:15,036 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 06:59:15,037 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 06:59:15,039 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 06:59:15,040 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 06:59:15,040 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 06:59:15,041 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 06:59:15,041 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 06:59:15,041 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 06:59:15,041 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 06:59:15,042 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 06:59:15,042 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 06:59:15,042 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 06:59:15,042 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 06:59:15,042 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 06:59:15,043 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 06:59:15,043 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 06:59:15,043 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 06:59:15,044 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 06:59:15,044 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 06:59:15,044 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 06:59:15,044 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 06:59:15,045 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 06:59:15,045 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 06:59:15,045 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-13 06:59:15,045 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 06:59:15,046 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 06:59:15,046 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 06:59:15,047 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 06:59:15,047 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_fe8f1f6d-93b1-4bad-81d3-245d87862226/bin/utaipan-q2qaUkNPG8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe8f1f6d-93b1-4bad-81d3-245d87862226/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e70fb0031ee54295dcc583b462c02b21fc0481d0 [2021-10-13 06:59:15,448 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 06:59:15,479 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 06:59:15,483 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 06:59:15,484 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 06:59:15,485 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 06:59:15,488 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe8f1f6d-93b1-4bad-81d3-245d87862226/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/float-benchs/nan_double.c [2021-10-13 06:59:15,576 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe8f1f6d-93b1-4bad-81d3-245d87862226/bin/utaipan-q2qaUkNPG8/data/6a4c693ae/a46bf926f6464064b8cee9e477cc3303/FLAG93f3ed36a [2021-10-13 06:59:16,104 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 06:59:16,106 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe8f1f6d-93b1-4bad-81d3-245d87862226/sv-benchmarks/c/float-benchs/nan_double.c [2021-10-13 06:59:16,112 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe8f1f6d-93b1-4bad-81d3-245d87862226/bin/utaipan-q2qaUkNPG8/data/6a4c693ae/a46bf926f6464064b8cee9e477cc3303/FLAG93f3ed36a [2021-10-13 06:59:16,469 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe8f1f6d-93b1-4bad-81d3-245d87862226/bin/utaipan-q2qaUkNPG8/data/6a4c693ae/a46bf926f6464064b8cee9e477cc3303 [2021-10-13 06:59:16,477 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 06:59:16,479 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 06:59:16,483 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 06:59:16,484 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 06:59:16,488 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 06:59:16,488 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:59:16" (1/1) ... [2021-10-13 06:59:16,490 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cc6b9b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:59:16, skipping insertion in model container [2021-10-13 06:59:16,490 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:59:16" (1/1) ... [2021-10-13 06:59:16,498 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 06:59:16,513 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 06:59:16,656 WARN L228 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_fe8f1f6d-93b1-4bad-81d3-245d87862226/sv-benchmarks/c/float-benchs/nan_double.c[434,447] [2021-10-13 06:59:16,663 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 06:59:16,689 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 06:59:16,709 WARN L228 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_fe8f1f6d-93b1-4bad-81d3-245d87862226/sv-benchmarks/c/float-benchs/nan_double.c[434,447] [2021-10-13 06:59:16,712 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 06:59:16,738 INFO L208 MainTranslator]: Completed translation [2021-10-13 06:59:16,739 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:59:16 WrapperNode [2021-10-13 06:59:16,740 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 06:59:16,742 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 06:59:16,742 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 06:59:16,742 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 06:59:16,751 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:59:16" (1/1) ... [2021-10-13 06:59:16,765 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:59:16" (1/1) ... [2021-10-13 06:59:16,786 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 06:59:16,788 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 06:59:16,788 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 06:59:16,788 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 06:59:16,811 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:59:16" (1/1) ... [2021-10-13 06:59:16,812 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:59:16" (1/1) ... [2021-10-13 06:59:16,841 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:59:16" (1/1) ... [2021-10-13 06:59:16,842 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:59:16" (1/1) ... [2021-10-13 06:59:16,849 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:59:16" (1/1) ... [2021-10-13 06:59:16,851 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:59:16" (1/1) ... [2021-10-13 06:59:16,852 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:59:16" (1/1) ... [2021-10-13 06:59:16,869 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 06:59:16,870 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 06:59:16,870 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 06:59:16,870 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 06:59:16,871 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:59:16" (1/1) ... [2021-10-13 06:59:16,880 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 06:59:16,895 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe8f1f6d-93b1-4bad-81d3-245d87862226/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 06:59:16,913 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe8f1f6d-93b1-4bad-81d3-245d87862226/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 06:59:16,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe8f1f6d-93b1-4bad-81d3-245d87862226/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 06:59:16,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-13 06:59:16,982 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 06:59:16,982 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 06:59:16,983 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 06:59:17,218 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 06:59:17,218 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-10-13 06:59:17,221 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:59:17 BoogieIcfgContainer [2021-10-13 06:59:17,221 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 06:59:17,223 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 06:59:17,223 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 06:59:17,226 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 06:59:17,227 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 06:59:16" (1/3) ... [2021-10-13 06:59:17,228 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15610ce7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:59:17, skipping insertion in model container [2021-10-13 06:59:17,228 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:59:16" (2/3) ... [2021-10-13 06:59:17,229 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15610ce7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:59:17, skipping insertion in model container [2021-10-13 06:59:17,229 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:59:17" (3/3) ... [2021-10-13 06:59:17,230 INFO L111 eAbstractionObserver]: Analyzing ICFG nan_double.c [2021-10-13 06:59:17,236 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 06:59:17,237 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 06:59:17,293 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 06:59:17,302 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, mConcurrency=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 [2021-10-13 06:59:17,302 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 06:59:17,318 INFO L276 IsEmpty]: Start isEmpty. Operand has 9 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:59:17,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-13 06:59:17,324 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:59:17,325 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-13 06:59:17,325 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 06:59:17,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:59:17,332 INFO L82 PathProgramCache]: Analyzing trace with hash 925605, now seen corresponding path program 1 times [2021-10-13 06:59:17,346 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 06:59:17,347 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1289066592] [2021-10-13 06:59:17,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:59:17,348 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 06:59:17,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe8f1f6d-93b1-4bad-81d3-245d87862226/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 06:59:17,362 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe8f1f6d-93b1-4bad-81d3-245d87862226/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 06:59:17,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe8f1f6d-93b1-4bad-81d3-245d87862226/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 06:59:17,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 06:59:17,513 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 06:59:17,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 06:59:17,588 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-13 06:59:17,600 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-13 06:59:17,601 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 06:59:17,625 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe8f1f6d-93b1-4bad-81d3-245d87862226/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-13 06:59:17,825 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe8f1f6d-93b1-4bad-81d3-245d87862226/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 06:59:17,833 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 06:59:17,880 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 06:59:17 BoogieIcfgContainer [2021-10-13 06:59:17,881 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 06:59:17,884 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 06:59:17,884 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 06:59:17,884 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 06:59:17,885 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:59:17" (3/4) ... [2021-10-13 06:59:17,887 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-13 06:59:17,925 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe8f1f6d-93b1-4bad-81d3-245d87862226/bin/utaipan-q2qaUkNPG8/witness.graphml [2021-10-13 06:59:17,925 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 06:59:17,929 INFO L168 Benchmark]: Toolchain (without parser) took 1447.78 ms. Allocated memory is still 62.9 MB. Free memory was 42.9 MB in the beginning and 43.7 MB in the end (delta: -883.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 06:59:17,934 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 62.9 MB. Free memory is still 43.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 06:59:17,935 INFO L168 Benchmark]: CACSL2BoogieTranslator took 257.53 ms. Allocated memory is still 62.9 MB. Free memory was 42.7 MB in the beginning and 33.1 MB in the end (delta: 9.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 06:59:17,937 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.39 ms. Allocated memory is still 62.9 MB. Free memory was 33.1 MB in the beginning and 31.6 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 06:59:17,938 INFO L168 Benchmark]: Boogie Preprocessor took 81.29 ms. Allocated memory is still 62.9 MB. Free memory was 31.6 MB in the beginning and 46.5 MB in the end (delta: -14.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 06:59:17,939 INFO L168 Benchmark]: RCFGBuilder took 351.34 ms. Allocated memory is still 62.9 MB. Free memory was 46.2 MB in the beginning and 37.4 MB in the end (delta: 8.8 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-13 06:59:17,939 INFO L168 Benchmark]: TraceAbstraction took 657.91 ms. Allocated memory is still 62.9 MB. Free memory was 37.0 MB in the beginning and 45.5 MB in the end (delta: -8.5 MB). Peak memory consumption was 16.3 MB. Max. memory is 16.1 GB. [2021-10-13 06:59:17,943 INFO L168 Benchmark]: Witness Printer took 42.09 ms. Allocated memory is still 62.9 MB. Free memory was 45.2 MB in the beginning and 43.7 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 06:59:17,951 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 62.9 MB. Free memory is still 43.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 257.53 ms. Allocated memory is still 62.9 MB. Free memory was 42.7 MB in the beginning and 33.1 MB in the end (delta: 9.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 44.39 ms. Allocated memory is still 62.9 MB. Free memory was 33.1 MB in the beginning and 31.6 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 81.29 ms. Allocated memory is still 62.9 MB. Free memory was 31.6 MB in the beginning and 46.5 MB in the end (delta: -14.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 351.34 ms. Allocated memory is still 62.9 MB. Free memory was 46.2 MB in the beginning and 37.4 MB in the end (delta: 8.8 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 657.91 ms. Allocated memory is still 62.9 MB. Free memory was 37.0 MB in the beginning and 45.5 MB in the end (delta: -8.5 MB). Peak memory consumption was 16.3 MB. Max. memory is 16.1 GB. * Witness Printer took 42.09 ms. Allocated memory is still 62.9 MB. Free memory was 45.2 MB in the beginning and 43.7 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 8]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L12] double x; [L13] x = __VERIFIER_nondet_double() [L8] COND TRUE !(cond) [L8] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 539.4ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 10.4ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 10.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 22.0ms SsaConstructionTime, 36.3ms SatisfiabilityAnalysisTime, 0.0ms 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 proved your program to be incorrect! [2021-10-13 06:59:18,005 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe8f1f6d-93b1-4bad-81d3-245d87862226/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...