./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cbmc-regression/float5.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_50ab11b2-5576-400d-8aab-c141606e28bc/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ab11b2-5576-400d-8aab-c141606e28bc/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_50ab11b2-5576-400d-8aab-c141606e28bc/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ab11b2-5576-400d-8aab-c141606e28bc/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float5.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ab11b2-5576-400d-8aab-c141606e28bc/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_50ab11b2-5576-400d-8aab-c141606e28bc/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 4353b03ed39dd917d13c7cd6163e83d6972334fc .................................................................................................................................................................................................................................................. 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_50ab11b2-5576-400d-8aab-c141606e28bc/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ab11b2-5576-400d-8aab-c141606e28bc/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_50ab11b2-5576-400d-8aab-c141606e28bc/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ab11b2-5576-400d-8aab-c141606e28bc/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float5.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ab11b2-5576-400d-8aab-c141606e28bc/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_50ab11b2-5576-400d-8aab-c141606e28bc/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 4353b03ed39dd917d13c7cd6163e83d6972334fc .......................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 06:46:44,472 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 06:46:44,476 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 06:46:44,539 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 06:46:44,540 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 06:46:44,544 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 06:46:44,546 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 06:46:44,550 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 06:46:44,553 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 06:46:44,561 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 06:46:44,562 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 06:46:44,564 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 06:46:44,564 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 06:46:44,567 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 06:46:44,569 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 06:46:44,574 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 06:46:44,579 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 06:46:44,580 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 06:46:44,582 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 06:46:44,589 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 06:46:44,592 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 06:46:44,593 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 06:46:44,596 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 06:46:44,597 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 06:46:44,601 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 06:46:44,601 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 06:46:44,602 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 06:46:44,604 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 06:46:44,604 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 06:46:44,606 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 06:46:44,606 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 06:46:44,607 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 06:46:44,609 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 06:46:44,610 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 06:46:44,612 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 06:46:44,612 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 06:46:44,613 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 06:46:44,613 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 06:46:44,613 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 06:46:44,614 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 06:46:44,615 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 06:46:44,616 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ab11b2-5576-400d-8aab-c141606e28bc/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-13 06:46:44,660 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 06:46:44,660 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 06:46:44,662 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 06:46:44,662 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 06:46:44,662 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 06:46:44,662 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 06:46:44,663 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 06:46:44,663 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 06:46:44,669 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 06:46:44,669 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 06:46:44,670 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 06:46:44,670 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 06:46:44,671 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 06:46:44,671 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 06:46:44,671 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 06:46:44,672 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 06:46:44,673 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 06:46:44,673 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 06:46:44,673 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 06:46:44,673 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 06:46:44,673 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 06:46:44,674 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 06:46:44,674 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 06:46:44,674 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 06:46:44,674 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 06:46:44,674 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 06:46:44,675 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 06:46:44,675 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 06:46:44,675 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 06:46:44,676 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 06:46:44,677 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 06:46:44,677 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 06:46:44,677 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 06:46:44,677 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 06:46:44,678 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 06:46:44,678 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 06:46:44,678 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 06:46:44,678 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 06:46:44,679 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 06:46:44,679 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_50ab11b2-5576-400d-8aab-c141606e28bc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ab11b2-5576-400d-8aab-c141606e28bc/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4353b03ed39dd917d13c7cd6163e83d6972334fc [2021-10-13 06:46:44,942 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 06:46:44,965 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 06:46:44,968 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 06:46:44,969 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 06:46:44,970 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 06:46:44,971 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ab11b2-5576-400d-8aab-c141606e28bc/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/floats-cbmc-regression/float5.c [2021-10-13 06:46:45,065 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ab11b2-5576-400d-8aab-c141606e28bc/bin/utaipan-q2qaUkNPG8/data/8868b5035/026df61e422447ef9354f565aab9196a/FLAGcb688395d [2021-10-13 06:46:45,571 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 06:46:45,573 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ab11b2-5576-400d-8aab-c141606e28bc/sv-benchmarks/c/floats-cbmc-regression/float5.c [2021-10-13 06:46:45,584 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ab11b2-5576-400d-8aab-c141606e28bc/bin/utaipan-q2qaUkNPG8/data/8868b5035/026df61e422447ef9354f565aab9196a/FLAGcb688395d [2021-10-13 06:46:45,949 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ab11b2-5576-400d-8aab-c141606e28bc/bin/utaipan-q2qaUkNPG8/data/8868b5035/026df61e422447ef9354f565aab9196a [2021-10-13 06:46:45,951 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 06:46:45,953 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 06:46:45,962 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 06:46:45,962 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 06:46:45,966 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 06:46:45,967 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:46:45" (1/1) ... [2021-10-13 06:46:45,968 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46f50786 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:46:45, skipping insertion in model container [2021-10-13 06:46:45,968 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:46:45" (1/1) ... [2021-10-13 06:46:45,976 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 06:46:45,988 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 06:46:46,169 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_50ab11b2-5576-400d-8aab-c141606e28bc/sv-benchmarks/c/floats-cbmc-regression/float5.c[501,514] [2021-10-13 06:46:46,172 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 06:46:46,181 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 06:46:46,199 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_50ab11b2-5576-400d-8aab-c141606e28bc/sv-benchmarks/c/floats-cbmc-regression/float5.c[501,514] [2021-10-13 06:46:46,199 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 06:46:46,217 INFO L208 MainTranslator]: Completed translation [2021-10-13 06:46:46,218 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:46:46 WrapperNode [2021-10-13 06:46:46,218 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 06:46:46,221 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 06:46:46,221 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 06:46:46,221 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 06:46:46,230 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:46:46" (1/1) ... [2021-10-13 06:46:46,239 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:46:46" (1/1) ... [2021-10-13 06:46:46,267 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 06:46:46,268 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 06:46:46,268 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 06:46:46,269 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 06:46:46,276 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:46:46" (1/1) ... [2021-10-13 06:46:46,277 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:46:46" (1/1) ... [2021-10-13 06:46:46,279 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:46:46" (1/1) ... [2021-10-13 06:46:46,279 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:46:46" (1/1) ... [2021-10-13 06:46:46,286 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:46:46" (1/1) ... [2021-10-13 06:46:46,289 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:46:46" (1/1) ... [2021-10-13 06:46:46,296 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:46:46" (1/1) ... [2021-10-13 06:46:46,298 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 06:46:46,299 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 06:46:46,301 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 06:46:46,301 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 06:46:46,302 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:46:46" (1/1) ... [2021-10-13 06:46:46,309 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 06:46:46,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ab11b2-5576-400d-8aab-c141606e28bc/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 06:46:46,335 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ab11b2-5576-400d-8aab-c141606e28bc/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 06:46:46,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ab11b2-5576-400d-8aab-c141606e28bc/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 06:46:46,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 06:46:46,382 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 06:46:46,382 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 06:46:46,382 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 06:46:46,628 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 06:46:46,629 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-13 06:46:46,631 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:46:46 BoogieIcfgContainer [2021-10-13 06:46:46,631 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 06:46:46,633 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 06:46:46,633 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 06:46:46,641 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 06:46:46,641 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 06:46:45" (1/3) ... [2021-10-13 06:46:46,642 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f72e3e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:46:46, skipping insertion in model container [2021-10-13 06:46:46,642 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:46:46" (2/3) ... [2021-10-13 06:46:46,642 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f72e3e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:46:46, skipping insertion in model container [2021-10-13 06:46:46,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:46:46" (3/3) ... [2021-10-13 06:46:46,644 INFO L111 eAbstractionObserver]: Analyzing ICFG float5.c [2021-10-13 06:46:46,649 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 06:46:46,649 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 06:46:46,703 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 06:46:46,711 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 06:46:46,712 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 06:46:46,731 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 06:46:46,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-13 06:46:46,735 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:46:46,736 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-13 06:46:46,737 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 06:46:46,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:46:46,742 INFO L82 PathProgramCache]: Analyzing trace with hash 53240, now seen corresponding path program 1 times [2021-10-13 06:46:46,760 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 06:46:46,768 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047656345] [2021-10-13 06:46:46,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:46:46,783 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 06:46:46,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 06:46:46,897 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 06:46:46,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 06:46:46,941 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-13 06:46:46,943 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-13 06:46:46,944 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 06:46:46,946 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 06:46:46,952 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 06:46:46,967 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 06:46:46 BoogieIcfgContainer [2021-10-13 06:46:46,967 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 06:46:46,968 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 06:46:46,969 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 06:46:46,969 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 06:46:46,969 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:46:46" (3/4) ... [2021-10-13 06:46:46,972 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-13 06:46:46,973 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 06:46:46,975 INFO L168 Benchmark]: Toolchain (without parser) took 1020.96 ms. Allocated memory is still 104.9 MB. Free memory was 71.4 MB in the beginning and 53.3 MB in the end (delta: 18.1 MB). Peak memory consumption was 15.9 MB. Max. memory is 16.1 GB. [2021-10-13 06:46:46,976 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 104.9 MB. Free memory is still 60.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 06:46:46,976 INFO L168 Benchmark]: CACSL2BoogieTranslator took 256.22 ms. Allocated memory is still 104.9 MB. Free memory was 71.2 MB in the beginning and 80.1 MB in the end (delta: -8.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 06:46:46,977 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.06 ms. Allocated memory is still 104.9 MB. Free memory was 80.1 MB in the beginning and 78.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 06:46:46,978 INFO L168 Benchmark]: Boogie Preprocessor took 30.47 ms. Allocated memory is still 104.9 MB. Free memory was 78.8 MB in the beginning and 77.6 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 06:46:46,978 INFO L168 Benchmark]: RCFGBuilder took 332.44 ms. Allocated memory is still 104.9 MB. Free memory was 77.6 MB in the beginning and 67.2 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 06:46:46,979 INFO L168 Benchmark]: TraceAbstraction took 334.69 ms. Allocated memory is still 104.9 MB. Free memory was 66.6 MB in the beginning and 53.6 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-13 06:46:46,980 INFO L168 Benchmark]: Witness Printer took 4.53 ms. Allocated memory is still 104.9 MB. Free memory was 53.6 MB in the beginning and 53.3 MB in the end (delta: 350.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 06:46:46,983 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 104.9 MB. Free memory is still 60.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 256.22 ms. Allocated memory is still 104.9 MB. Free memory was 71.2 MB in the beginning and 80.1 MB in the end (delta: -8.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 46.06 ms. Allocated memory is still 104.9 MB. Free memory was 80.1 MB in the beginning and 78.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 30.47 ms. Allocated memory is still 104.9 MB. Free memory was 78.8 MB in the beginning and 77.6 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 332.44 ms. Allocated memory is still 104.9 MB. Free memory was 77.6 MB in the beginning and 67.2 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 334.69 ms. Allocated memory is still 104.9 MB. Free memory was 66.6 MB in the beginning and 53.6 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Witness Printer took 4.53 ms. Allocated memory is still 104.9 MB. Free memory was 53.6 MB in the beginning and 53.3 MB in the end (delta: 350.2 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: 14]: 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 14, overapproximation of someBinaryDOUBLEComparisonOperation at line 10, overapproximation of someBinaryArithmeticFLOAToperation at line 12. Possible FailurePath: [L8] float a=__VERIFIER_nondet_float(), b=__VERIFIER_nondet_float(); [L8] float a=__VERIFIER_nondet_float(), b=__VERIFIER_nondet_float(); [L10] COND FALSE !(!(a==1 || a==0.5 || a==2 || a==3 || a==0.1)) [L11] b=a [L12] a/=2 [L13] a*=2 [L14] COND TRUE !(a==b) [L14] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 249.5ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 12.7ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 10.8ms, 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: 5.4ms SsaConstructionTime, 41.3ms 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 06:46:47,035 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ab11b2-5576-400d-8aab-c141606e28bc/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 06:46:49,477 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 06:46:49,480 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 06:46:49,536 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 06:46:49,537 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 06:46:49,542 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 06:46:49,544 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 06:46:49,548 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 06:46:49,552 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 06:46:49,559 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 06:46:49,561 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 06:46:49,562 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 06:46:49,563 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 06:46:49,565 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 06:46:49,567 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 06:46:49,571 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 06:46:49,573 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 06:46:49,574 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 06:46:49,576 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 06:46:49,583 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 06:46:49,585 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 06:46:49,587 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 06:46:49,590 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 06:46:49,592 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 06:46:49,595 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 06:46:49,596 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 06:46:49,596 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 06:46:49,598 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 06:46:49,599 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 06:46:49,600 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 06:46:49,600 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 06:46:49,601 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 06:46:49,603 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 06:46:49,604 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 06:46:49,606 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 06:46:49,606 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 06:46:49,607 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 06:46:49,607 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 06:46:49,613 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 06:46:49,614 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 06:46:49,615 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 06:46:49,616 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ab11b2-5576-400d-8aab-c141606e28bc/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-13 06:46:49,653 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 06:46:49,653 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 06:46:49,655 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 06:46:49,655 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 06:46:49,655 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 06:46:49,655 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 06:46:49,656 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 06:46:49,656 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 06:46:49,657 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 06:46:49,658 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 06:46:49,659 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 06:46:49,659 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 06:46:49,660 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 06:46:49,660 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 06:46:49,660 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 06:46:49,660 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 06:46:49,660 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 06:46:49,661 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 06:46:49,661 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 06:46:49,661 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 06:46:49,661 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 06:46:49,662 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 06:46:49,662 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 06:46:49,662 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 06:46:49,662 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 06:46:49,662 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 06:46:49,663 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 06:46:49,663 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 06:46:49,663 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 06:46:49,663 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 06:46:49,664 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-13 06:46:49,664 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 06:46:49,664 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 06:46:49,664 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 06:46:49,665 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 06:46:49,665 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_50ab11b2-5576-400d-8aab-c141606e28bc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ab11b2-5576-400d-8aab-c141606e28bc/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4353b03ed39dd917d13c7cd6163e83d6972334fc [2021-10-13 06:46:50,050 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 06:46:50,083 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 06:46:50,086 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 06:46:50,087 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 06:46:50,088 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 06:46:50,091 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ab11b2-5576-400d-8aab-c141606e28bc/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/floats-cbmc-regression/float5.c [2021-10-13 06:46:50,159 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ab11b2-5576-400d-8aab-c141606e28bc/bin/utaipan-q2qaUkNPG8/data/f9cad44e9/d79011abd2ec4801830b604302d043df/FLAG5cdb81790 [2021-10-13 06:46:50,749 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 06:46:50,750 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ab11b2-5576-400d-8aab-c141606e28bc/sv-benchmarks/c/floats-cbmc-regression/float5.c [2021-10-13 06:46:50,756 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ab11b2-5576-400d-8aab-c141606e28bc/bin/utaipan-q2qaUkNPG8/data/f9cad44e9/d79011abd2ec4801830b604302d043df/FLAG5cdb81790 [2021-10-13 06:46:51,099 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ab11b2-5576-400d-8aab-c141606e28bc/bin/utaipan-q2qaUkNPG8/data/f9cad44e9/d79011abd2ec4801830b604302d043df [2021-10-13 06:46:51,103 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 06:46:51,104 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 06:46:51,105 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 06:46:51,106 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 06:46:51,125 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 06:46:51,126 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:46:51" (1/1) ... [2021-10-13 06:46:51,129 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1345dd82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:46:51, skipping insertion in model container [2021-10-13 06:46:51,129 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:46:51" (1/1) ... [2021-10-13 06:46:51,137 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 06:46:51,151 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 06:46:51,344 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_50ab11b2-5576-400d-8aab-c141606e28bc/sv-benchmarks/c/floats-cbmc-regression/float5.c[501,514] [2021-10-13 06:46:51,355 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 06:46:51,373 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 06:46:51,395 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_50ab11b2-5576-400d-8aab-c141606e28bc/sv-benchmarks/c/floats-cbmc-regression/float5.c[501,514] [2021-10-13 06:46:51,396 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 06:46:51,412 INFO L208 MainTranslator]: Completed translation [2021-10-13 06:46:51,413 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:46:51 WrapperNode [2021-10-13 06:46:51,413 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 06:46:51,416 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 06:46:51,416 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 06:46:51,417 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 06:46:51,424 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:46:51" (1/1) ... [2021-10-13 06:46:51,434 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:46:51" (1/1) ... [2021-10-13 06:46:51,452 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 06:46:51,453 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 06:46:51,454 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 06:46:51,454 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 06:46:51,462 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:46:51" (1/1) ... [2021-10-13 06:46:51,462 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:46:51" (1/1) ... [2021-10-13 06:46:51,476 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:46:51" (1/1) ... [2021-10-13 06:46:51,477 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:46:51" (1/1) ... [2021-10-13 06:46:51,490 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:46:51" (1/1) ... [2021-10-13 06:46:51,497 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:46:51" (1/1) ... [2021-10-13 06:46:51,500 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:46:51" (1/1) ... [2021-10-13 06:46:51,503 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 06:46:51,506 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 06:46:51,507 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 06:46:51,507 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 06:46:51,508 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:46:51" (1/1) ... [2021-10-13 06:46:51,515 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 06:46:51,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ab11b2-5576-400d-8aab-c141606e28bc/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 06:46:51,559 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ab11b2-5576-400d-8aab-c141606e28bc/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 06:46:51,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ab11b2-5576-400d-8aab-c141606e28bc/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 06:46:51,615 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 06:46:51,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 06:46:51,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-13 06:46:51,616 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 06:46:51,993 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 06:46:51,993 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-13 06:46:51,995 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:46:51 BoogieIcfgContainer [2021-10-13 06:46:51,995 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 06:46:51,997 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 06:46:51,997 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 06:46:52,001 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 06:46:52,001 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 06:46:51" (1/3) ... [2021-10-13 06:46:52,002 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d93c084 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:46:52, skipping insertion in model container [2021-10-13 06:46:52,002 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:46:51" (2/3) ... [2021-10-13 06:46:52,003 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d93c084 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:46:52, skipping insertion in model container [2021-10-13 06:46:52,003 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:46:51" (3/3) ... [2021-10-13 06:46:52,005 INFO L111 eAbstractionObserver]: Analyzing ICFG float5.c [2021-10-13 06:46:52,010 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 06:46:52,011 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 06:46:52,060 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 06:46:52,067 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 06:46:52,067 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 06:46:52,080 INFO L276 IsEmpty]: Start isEmpty. Operand has 10 states, 8 states have (on average 1.375) internal successors, (11), 9 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:46:52,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-13 06:46:52,085 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:46:52,086 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-13 06:46:52,086 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 06:46:52,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:46:52,092 INFO L82 PathProgramCache]: Analyzing trace with hash 889508712, now seen corresponding path program 1 times [2021-10-13 06:46:52,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 06:46:52,105 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1306910933] [2021-10-13 06:46:52,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:46:52,106 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 06:46:52,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ab11b2-5576-400d-8aab-c141606e28bc/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 06:46:52,114 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ab11b2-5576-400d-8aab-c141606e28bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 06:46:52,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ab11b2-5576-400d-8aab-c141606e28bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 06:46:52,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:46:52,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-13 06:46:52,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 06:46:52,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:46:52,271 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 06:46:52,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:46:52,295 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 06:46:52,296 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1306910933] [2021-10-13 06:46:52,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1306910933] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 06:46:52,297 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:46:52,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-13 06:46:52,299 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161427429] [2021-10-13 06:46:52,303 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-13 06:46:52,304 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 06:46:52,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-13 06:46:52,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 06:46:52,320 INFO L87 Difference]: Start difference. First operand has 10 states, 8 states have (on average 1.375) internal successors, (11), 9 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 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 06:46:52,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:46:52,332 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2021-10-13 06:46:52,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-13 06:46:52,334 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 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) Word has length 6 [2021-10-13 06:46:52,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:46:52,342 INFO L225 Difference]: With dead ends: 17 [2021-10-13 06:46:52,342 INFO L226 Difference]: Without dead ends: 7 [2021-10-13 06:46:52,344 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 06:46:52,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2021-10-13 06:46:52,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2021-10-13 06:46:52,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.0) internal successors, (6), 6 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 06:46:52,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6 transitions. [2021-10-13 06:46:52,387 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 6 transitions. Word has length 6 [2021-10-13 06:46:52,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:46:52,388 INFO L470 AbstractCegarLoop]: Abstraction has 7 states and 6 transitions. [2021-10-13 06:46:52,388 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 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 06:46:52,389 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2021-10-13 06:46:52,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-13 06:46:52,389 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:46:52,389 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-13 06:46:52,422 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ab11b2-5576-400d-8aab-c141606e28bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-13 06:46:52,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ab11b2-5576-400d-8aab-c141606e28bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 06:46:52,609 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 06:46:52,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:46:52,610 INFO L82 PathProgramCache]: Analyzing trace with hash 889568294, now seen corresponding path program 1 times [2021-10-13 06:46:52,611 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 06:46:52,611 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1861931887] [2021-10-13 06:46:52,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:46:52,612 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 06:46:52,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ab11b2-5576-400d-8aab-c141606e28bc/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 06:46:52,613 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ab11b2-5576-400d-8aab-c141606e28bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 06:46:52,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ab11b2-5576-400d-8aab-c141606e28bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-13 06:46:52,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:46:52,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 06:46:52,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 06:47:06,154 WARN L207 SmtUtils]: Spent 5.28 s on a formula simplification that was a NOOP. DAG size: 21 [2021-10-13 06:47:07,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:47:07,509 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 06:47:21,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:47:21,894 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 06:47:21,895 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1861931887] [2021-10-13 06:47:21,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1861931887] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 06:47:21,895 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:47:21,896 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-13 06:47:21,896 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667574068] [2021-10-13 06:47:21,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 06:47:21,898 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 06:47:21,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 06:47:21,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=27, Unknown=1, NotChecked=0, Total=42 [2021-10-13 06:47:21,900 INFO L87 Difference]: Start difference. First operand 7 states and 6 transitions. Second operand has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:47:33,694 WARN L207 SmtUtils]: Spent 5.37 s on a formula simplification that was a NOOP. DAG size: 23 [2021-10-13 06:47:33,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:47:33,695 INFO L93 Difference]: Finished difference Result 7 states and 6 transitions. [2021-10-13 06:47:33,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 06:47:33,695 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-13 06:47:33,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:47:33,695 INFO L225 Difference]: With dead ends: 7 [2021-10-13 06:47:33,696 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 06:47:33,696 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 24903.1ms TimeCoverageRelationStatistics Valid=21, Invalid=34, Unknown=1, NotChecked=0, Total=56 [2021-10-13 06:47:33,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 06:47:33,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 06:47:33,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:47:33,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 06:47:33,697 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 6 [2021-10-13 06:47:33,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:47:33,698 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 06:47:33,698 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:47:33,698 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 06:47:33,698 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 06:47:33,700 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 06:47:33,718 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ab11b2-5576-400d-8aab-c141606e28bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-13 06:47:33,901 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ab11b2-5576-400d-8aab-c141606e28bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 06:47:33,903 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-13 06:47:33,905 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-13 06:47:33,905 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-13 06:47:33,905 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-13 06:47:33,906 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-13 06:47:33,906 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-10-13 06:47:33,906 INFO L857 garLoopResultBuilder]: For program point L14(line 14) no Hoare annotation was computed. [2021-10-13 06:47:33,906 INFO L857 garLoopResultBuilder]: For program point L14-1(line 14) no Hoare annotation was computed. [2021-10-13 06:47:33,907 INFO L857 garLoopResultBuilder]: For program point L10(line 10) no Hoare annotation was computed. [2021-10-13 06:47:33,907 INFO L857 garLoopResultBuilder]: For program point L10-2(line 10) no Hoare annotation was computed. [2021-10-13 06:47:33,907 INFO L857 garLoopResultBuilder]: For program point L6(lines 6 15) no Hoare annotation was computed. [2021-10-13 06:47:33,911 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 06:47:33,914 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 06:47:33 BoogieIcfgContainer [2021-10-13 06:47:33,914 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 06:47:33,915 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 06:47:33,915 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 06:47:33,915 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 06:47:33,916 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:46:51" (3/4) ... [2021-10-13 06:47:33,919 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-13 06:47:33,932 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-10-13 06:47:33,932 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-13 06:47:33,933 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-13 06:47:33,933 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 06:47:33,970 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ab11b2-5576-400d-8aab-c141606e28bc/bin/utaipan-q2qaUkNPG8/witness.graphml [2021-10-13 06:47:33,971 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 06:47:33,972 INFO L168 Benchmark]: Toolchain (without parser) took 42867.14 ms. Allocated memory was 62.9 MB in the beginning and 90.2 MB in the end (delta: 27.3 MB). Free memory was 42.9 MB in the beginning and 67.2 MB in the end (delta: -24.2 MB). Peak memory consumption was 2.9 MB. Max. memory is 16.1 GB. [2021-10-13 06:47:33,973 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 06:47:33,973 INFO L168 Benchmark]: CACSL2BoogieTranslator took 307.97 ms. Allocated memory is still 62.9 MB. Free memory was 42.8 MB in the beginning and 32.9 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 06:47:33,974 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.56 ms. Allocated memory is still 62.9 MB. Free memory was 32.7 MB in the beginning and 31.4 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 06:47:33,974 INFO L168 Benchmark]: Boogie Preprocessor took 51.67 ms. Allocated memory is still 62.9 MB. Free memory was 31.3 MB in the beginning and 30.2 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 06:47:33,975 INFO L168 Benchmark]: RCFGBuilder took 489.35 ms. Allocated memory is still 62.9 MB. Free memory was 30.2 MB in the beginning and 38.8 MB in the end (delta: -8.6 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. [2021-10-13 06:47:33,982 INFO L168 Benchmark]: TraceAbstraction took 41917.41 ms. Allocated memory was 62.9 MB in the beginning and 90.2 MB in the end (delta: 27.3 MB). Free memory was 38.3 MB in the beginning and 69.4 MB in the end (delta: -31.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 06:47:33,983 INFO L168 Benchmark]: Witness Printer took 55.58 ms. Allocated memory is still 90.2 MB. Free memory was 69.4 MB in the beginning and 67.2 MB in the end (delta: 2.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 06:47:33,986 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 307.97 ms. Allocated memory is still 62.9 MB. Free memory was 42.8 MB in the beginning and 32.9 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 36.56 ms. Allocated memory is still 62.9 MB. Free memory was 32.7 MB in the beginning and 31.4 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 51.67 ms. Allocated memory is still 62.9 MB. Free memory was 31.3 MB in the beginning and 30.2 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 489.35 ms. Allocated memory is still 62.9 MB. Free memory was 30.2 MB in the beginning and 38.8 MB in the end (delta: -8.6 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 41917.41 ms. Allocated memory was 62.9 MB in the beginning and 90.2 MB in the end (delta: 27.3 MB). Free memory was 38.3 MB in the beginning and 69.4 MB in the end (delta: -31.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 55.58 ms. Allocated memory is still 90.2 MB. Free memory was 69.4 MB in the beginning and 67.2 MB in the end (delta: 2.2 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 - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 41853.3ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 9.7ms, AutomataDifference: 11838.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 3.1ms, InitialAbstractionConstructionTime: 9.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 11 SDtfs, 1 SDslu, 2 SDs, 0 SdLazy, 8 SolverSat, 1 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 3867.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 24903.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=10occurred in iteration=0, InterpolantAutomatonStates: 7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 16.7ms AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 0 LocationsWithAnnotation, 0 PreInvPairs, 0 NumberOfFragments, 0 HoareAnnotationTreeSize, 0 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0ms HoareSimplificationTime, 0 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 18.2ms SsaConstructionTime, 129.5ms SatisfiabilityAnalysisTime, 29268.1ms InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 100 SizeOfPredicates, 4 NumberOfNonLiveVariables, 58 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-13 06:47:34,042 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50ab11b2-5576-400d-8aab-c141606e28bc/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...