./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/interpolation2.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_9396c66e-4673-4066-8fbe-8d6b51383274/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9396c66e-4673-4066-8fbe-8d6b51383274/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_9396c66e-4673-4066-8fbe-8d6b51383274/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9396c66e-4673-4066-8fbe-8d6b51383274/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/interpolation2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9396c66e-4673-4066-8fbe-8d6b51383274/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_9396c66e-4673-4066-8fbe-8d6b51383274/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 1b1e724e6139e9613944145249016fbe4e744e3c .............................................................................................................................................................................................................................................................................................................. 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_9396c66e-4673-4066-8fbe-8d6b51383274/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9396c66e-4673-4066-8fbe-8d6b51383274/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_9396c66e-4673-4066-8fbe-8d6b51383274/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9396c66e-4673-4066-8fbe-8d6b51383274/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/interpolation2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9396c66e-4673-4066-8fbe-8d6b51383274/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_9396c66e-4673-4066-8fbe-8d6b51383274/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 1b1e724e6139e9613944145249016fbe4e744e3c ................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Cannot name open terms --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 07:51:45,024 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:51:45,027 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:51:45,065 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:51:45,066 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:51:45,067 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:51:45,069 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:51:45,071 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:51:45,074 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:51:45,075 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:51:45,076 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:51:45,078 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:51:45,078 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:51:45,080 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:51:45,082 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:51:45,083 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:51:45,084 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:51:45,086 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:51:45,088 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:51:45,090 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:51:45,092 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:51:45,093 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:51:45,095 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:51:45,096 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:51:45,100 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:51:45,100 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:51:45,101 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:51:45,102 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:51:45,103 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:51:45,104 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:51:45,105 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:51:45,106 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:51:45,107 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:51:45,108 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:51:45,109 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:51:45,109 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:51:45,110 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:51:45,110 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:51:45,110 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:51:45,112 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:51:45,112 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:51:45,113 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9396c66e-4673-4066-8fbe-8d6b51383274/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-13 07:51:45,141 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:51:45,142 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:51:45,142 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:51:45,143 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:51:45,143 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:51:45,143 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:51:45,143 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 07:51:45,144 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:51:45,144 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:51:45,144 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 07:51:45,144 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 07:51:45,144 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:51:45,145 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 07:51:45,145 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 07:51:45,145 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 07:51:45,146 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:51:45,146 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:51:45,146 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 07:51:45,146 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:51:45,147 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:51:45,147 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:51:45,147 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:51:45,147 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:51:45,148 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:51:45,148 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:51:45,148 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:51:45,148 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:51:45,148 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:51:45,149 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:51:45,149 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:51:45,149 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:51:45,149 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:51:45,150 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:51:45,150 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:51:45,150 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 07:51:45,150 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 07:51:45,150 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:51:45,151 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:51:45,151 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:51:45,151 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_9396c66e-4673-4066-8fbe-8d6b51383274/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9396c66e-4673-4066-8fbe-8d6b51383274/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1b1e724e6139e9613944145249016fbe4e744e3c [2021-10-13 07:51:45,500 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:51:45,527 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:51:45,530 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:51:45,532 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:51:45,533 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:51:45,534 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9396c66e-4673-4066-8fbe-8d6b51383274/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/float-benchs/interpolation2.c [2021-10-13 07:51:45,604 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9396c66e-4673-4066-8fbe-8d6b51383274/bin/utaipan-q2qaUkNPG8/data/ae9e31dcf/c7bbae54abac487c9722c6b1ba16cf5b/FLAG8e41eed92 [2021-10-13 07:51:46,106 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:51:46,106 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9396c66e-4673-4066-8fbe-8d6b51383274/sv-benchmarks/c/float-benchs/interpolation2.c [2021-10-13 07:51:46,112 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9396c66e-4673-4066-8fbe-8d6b51383274/bin/utaipan-q2qaUkNPG8/data/ae9e31dcf/c7bbae54abac487c9722c6b1ba16cf5b/FLAG8e41eed92 [2021-10-13 07:51:46,489 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9396c66e-4673-4066-8fbe-8d6b51383274/bin/utaipan-q2qaUkNPG8/data/ae9e31dcf/c7bbae54abac487c9722c6b1ba16cf5b [2021-10-13 07:51:46,492 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:51:46,494 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:51:46,504 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:51:46,505 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:51:46,508 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:51:46,509 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:51:46" (1/1) ... [2021-10-13 07:51:46,513 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@242abf6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:51:46, skipping insertion in model container [2021-10-13 07:51:46,513 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:51:46" (1/1) ... [2021-10-13 07:51:46,522 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:51:46,539 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:51:46,727 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_9396c66e-4673-4066-8fbe-8d6b51383274/sv-benchmarks/c/float-benchs/interpolation2.c[450,463] [2021-10-13 07:51:46,754 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:51:46,762 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:51:46,773 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_9396c66e-4673-4066-8fbe-8d6b51383274/sv-benchmarks/c/float-benchs/interpolation2.c[450,463] [2021-10-13 07:51:46,787 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:51:46,802 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:51:46,802 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:51:46 WrapperNode [2021-10-13 07:51:46,803 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:51:46,804 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:51:46,804 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:51:46,804 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:51:46,812 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:51:46" (1/1) ... [2021-10-13 07:51:46,822 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:51:46" (1/1) ... [2021-10-13 07:51:46,858 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:51:46,859 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:51:46,860 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:51:46,861 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:51:46,870 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:51:46" (1/1) ... [2021-10-13 07:51:46,870 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:51:46" (1/1) ... [2021-10-13 07:51:46,882 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:51:46" (1/1) ... [2021-10-13 07:51:46,884 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:51:46" (1/1) ... [2021-10-13 07:51:46,898 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:51:46" (1/1) ... [2021-10-13 07:51:46,902 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:51:46" (1/1) ... [2021-10-13 07:51:46,903 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:51:46" (1/1) ... [2021-10-13 07:51:46,906 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:51:46,907 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:51:46,907 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:51:46,907 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:51:46,908 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:51:46" (1/1) ... [2021-10-13 07:51:46,915 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:51:46,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9396c66e-4673-4066-8fbe-8d6b51383274/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:51:46,938 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9396c66e-4673-4066-8fbe-8d6b51383274/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:51:46,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9396c66e-4673-4066-8fbe-8d6b51383274/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:51:46,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 07:51:46,994 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:51:46,996 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-10-13 07:51:46,996 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:51:46,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:51:46,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2021-10-13 07:51:46,997 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 07:51:47,431 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:51:47,432 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-10-13 07:51:47,434 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:51:47 BoogieIcfgContainer [2021-10-13 07:51:47,434 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:51:47,436 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:51:47,436 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:51:47,440 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:51:47,440 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:51:46" (1/3) ... [2021-10-13 07:51:47,441 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f390766 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:51:47, skipping insertion in model container [2021-10-13 07:51:47,441 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:51:46" (2/3) ... [2021-10-13 07:51:47,442 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f390766 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:51:47, skipping insertion in model container [2021-10-13 07:51:47,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:51:47" (3/3) ... [2021-10-13 07:51:47,443 INFO L111 eAbstractionObserver]: Analyzing ICFG interpolation2.c [2021-10-13 07:51:47,448 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:51:47,449 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 07:51:47,492 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:51:47,499 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 07:51:47,499 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 07:51:47,510 INFO L276 IsEmpty]: Start isEmpty. Operand has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 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 07:51:47,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-13 07:51:47,515 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:51:47,516 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-13 07:51:47,516 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:51:47,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:51:47,522 INFO L82 PathProgramCache]: Analyzing trace with hash 85773351, now seen corresponding path program 1 times [2021-10-13 07:51:47,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:51:47,533 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063656112] [2021-10-13 07:51:47,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:51:47,534 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:51:47,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:51:47,721 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 07:51:47,721 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:51:47,722 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063656112] [2021-10-13 07:51:47,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063656112] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:51:47,723 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:51:47,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 07:51:47,727 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34301899] [2021-10-13 07:51:47,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:51:47,732 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:51:47,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:51:47,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:51:47,756 INFO L87 Difference]: Start difference. First operand has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 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 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 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 07:51:47,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:51:47,778 INFO L93 Difference]: Finished difference Result 23 states and 27 transitions. [2021-10-13 07:51:47,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:51:47,780 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 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 5 [2021-10-13 07:51:47,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:51:47,788 INFO L225 Difference]: With dead ends: 23 [2021-10-13 07:51:47,788 INFO L226 Difference]: Without dead ends: 13 [2021-10-13 07:51:47,791 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:51:47,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-10-13 07:51:47,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 8. [2021-10-13 07:51:47,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 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 07:51:47,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 9 transitions. [2021-10-13 07:51:47,820 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 9 transitions. Word has length 5 [2021-10-13 07:51:47,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:51:47,820 INFO L470 AbstractCegarLoop]: Abstraction has 8 states and 9 transitions. [2021-10-13 07:51:47,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 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 07:51:47,821 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 9 transitions. [2021-10-13 07:51:47,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-13 07:51:47,821 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:51:47,822 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-13 07:51:47,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 07:51:47,822 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:51:47,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:51:47,823 INFO L82 PathProgramCache]: Analyzing trace with hash -1666710841, now seen corresponding path program 1 times [2021-10-13 07:51:47,823 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:51:47,824 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674516087] [2021-10-13 07:51:47,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:51:47,824 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:51:47,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 07:51:47,860 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 07:51:47,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 07:51:47,913 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-13 07:51:47,913 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-13 07:51:47,915 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:51:47,917 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-13 07:51:47,923 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 07:51:47,945 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:51:47 BoogieIcfgContainer [2021-10-13 07:51:47,945 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 07:51:47,946 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 07:51:47,946 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 07:51:47,946 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 07:51:47,947 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:51:47" (3/4) ... [2021-10-13 07:51:47,950 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-13 07:51:47,950 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 07:51:47,952 INFO L168 Benchmark]: Toolchain (without parser) took 1456.78 ms. Allocated memory is still 100.7 MB. Free memory was 65.2 MB in the beginning and 67.4 MB in the end (delta: -2.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:51:47,953 INFO L168 Benchmark]: CDTParser took 0.91 ms. Allocated memory is still 100.7 MB. Free memory is still 81.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:51:47,953 INFO L168 Benchmark]: CACSL2BoogieTranslator took 298.88 ms. Allocated memory is still 100.7 MB. Free memory was 65.0 MB in the beginning and 77.1 MB in the end (delta: -12.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 07:51:47,954 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.63 ms. Allocated memory is still 100.7 MB. Free memory was 77.1 MB in the beginning and 75.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:51:47,955 INFO L168 Benchmark]: Boogie Preprocessor took 46.93 ms. Allocated memory is still 100.7 MB. Free memory was 75.1 MB in the beginning and 74.0 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:51:47,955 INFO L168 Benchmark]: RCFGBuilder took 527.45 ms. Allocated memory is still 100.7 MB. Free memory was 73.7 MB in the beginning and 56.3 MB in the end (delta: 17.4 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2021-10-13 07:51:47,956 INFO L168 Benchmark]: TraceAbstraction took 509.16 ms. Allocated memory is still 100.7 MB. Free memory was 55.7 MB in the beginning and 67.8 MB in the end (delta: -12.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:51:47,956 INFO L168 Benchmark]: Witness Printer took 4.55 ms. Allocated memory is still 100.7 MB. Free memory was 67.8 MB in the beginning and 67.4 MB in the end (delta: 428.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:51:47,960 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.91 ms. Allocated memory is still 100.7 MB. Free memory is still 81.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 298.88 ms. Allocated memory is still 100.7 MB. Free memory was 65.0 MB in the beginning and 77.1 MB in the end (delta: -12.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 54.63 ms. Allocated memory is still 100.7 MB. Free memory was 77.1 MB in the beginning and 75.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 46.93 ms. Allocated memory is still 100.7 MB. Free memory was 75.1 MB in the beginning and 74.0 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 527.45 ms. Allocated memory is still 100.7 MB. Free memory was 73.7 MB in the beginning and 56.3 MB in the end (delta: 17.4 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 509.16 ms. Allocated memory is still 100.7 MB. Free memory was 55.7 MB in the beginning and 67.8 MB in the end (delta: -12.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 4.55 ms. Allocated memory is still 100.7 MB. Free memory was 67.8 MB in the beginning and 67.4 MB in the end (delta: 428.8 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: 9]: 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 28, overapproximation of to_real at line 15, overapproximation of someBinaryArithmeticFLOAToperation at line 26. Possible FailurePath: [L13] int i; [L14] float z, t; [L15] float min[] = { 5, 10, 12, 30, 150 }; [L16] float max[] = { 10, 12, 30, 150, 300 }; [L17] float org[] = { 1, 5, -10, 30, 20 }; [L18] float slope[] = { 4, -15, 40, -10, 0 }; [L20] t = __VERIFIER_nondet_float() [L21] EXPR min[0] [L21] t >= min[0] && t <= max[sizeof(max) / sizeof(max[0]) - 1] [L21] EXPR max[sizeof(max) / sizeof(max[0]) - 1] [L21] t >= min[0] && t <= max[sizeof(max) / sizeof(max[0]) - 1] [L7] COND FALSE !(!cond) [L23] i = 0 [L23] COND TRUE i < sizeof(min) / sizeof(min[0]) [L24] EXPR max[i] [L24] COND TRUE t <= max[i] [L26] EXPR org[i] [L26] EXPR slope[i] [L26] EXPR min[i] [L26] EXPR max[i] [L26] EXPR min[i] [L26] z = org[i] + slope[i] * (t - min[i]) / (max[i] - min[i]) [L9] COND TRUE !(cond) [L9] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 431.3ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 7.8ms, AutomataDifference: 58.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 8.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 8 SDtfs, 7 SDslu, 6 SDs, 0 SdLazy, 5 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 14.9ms AutomataMinimizationTime, 1 MinimizatonAttempts, 5 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 9.7ms SsaConstructionTime, 69.4ms SatisfiabilityAnalysisTime, 84.3ms InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 6 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-13 07:51:48,010 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9396c66e-4673-4066-8fbe-8d6b51383274/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 07:51:50,819 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:51:50,824 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:51:50,899 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:51:50,900 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:51:50,906 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:51:50,909 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:51:50,915 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:51:50,920 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:51:50,933 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:51:50,934 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:51:50,936 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:51:50,936 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:51:50,938 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:51:50,940 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:51:50,942 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:51:50,943 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:51:50,947 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:51:50,950 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:51:50,961 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:51:50,964 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:51:50,966 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:51:50,973 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:51:50,976 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:51:50,980 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:51:50,981 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:51:50,981 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:51:50,984 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:51:50,984 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:51:50,986 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:51:50,986 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:51:50,987 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:51:50,990 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:51:50,991 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:51:51,004 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:51:51,004 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:51:51,006 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:51:51,006 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:51:51,006 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:51:51,008 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:51:51,009 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:51:51,015 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9396c66e-4673-4066-8fbe-8d6b51383274/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-13 07:51:51,057 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:51:51,058 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:51:51,059 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:51:51,059 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:51:51,059 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:51:51,059 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:51:51,060 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:51:51,060 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:51:51,060 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:51:51,061 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:51:51,062 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:51:51,063 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:51:51,063 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:51:51,063 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:51:51,063 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:51:51,063 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:51:51,064 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:51:51,064 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 07:51:51,064 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 07:51:51,064 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:51:51,064 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:51:51,065 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:51:51,065 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:51:51,065 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:51:51,065 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 07:51:51,065 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:51:51,066 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:51:51,066 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:51:51,066 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:51:51,066 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:51:51,066 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-13 07:51:51,067 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 07:51:51,067 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:51:51,067 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:51:51,067 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:51:51,068 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_9396c66e-4673-4066-8fbe-8d6b51383274/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9396c66e-4673-4066-8fbe-8d6b51383274/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1b1e724e6139e9613944145249016fbe4e744e3c [2021-10-13 07:51:51,449 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:51:51,481 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:51:51,484 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:51:51,485 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:51:51,486 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:51:51,489 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9396c66e-4673-4066-8fbe-8d6b51383274/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/float-benchs/interpolation2.c [2021-10-13 07:51:51,568 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9396c66e-4673-4066-8fbe-8d6b51383274/bin/utaipan-q2qaUkNPG8/data/b607b0e83/b5ccefe947c04033ba23e580a7cf4d95/FLAG0c88faaaf [2021-10-13 07:51:52,075 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:51:52,076 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9396c66e-4673-4066-8fbe-8d6b51383274/sv-benchmarks/c/float-benchs/interpolation2.c [2021-10-13 07:51:52,081 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9396c66e-4673-4066-8fbe-8d6b51383274/bin/utaipan-q2qaUkNPG8/data/b607b0e83/b5ccefe947c04033ba23e580a7cf4d95/FLAG0c88faaaf [2021-10-13 07:51:52,469 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9396c66e-4673-4066-8fbe-8d6b51383274/bin/utaipan-q2qaUkNPG8/data/b607b0e83/b5ccefe947c04033ba23e580a7cf4d95 [2021-10-13 07:51:52,473 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:51:52,475 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:51:52,477 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:51:52,477 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:51:52,481 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:51:52,481 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:51:52" (1/1) ... [2021-10-13 07:51:52,483 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a8ed8fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:51:52, skipping insertion in model container [2021-10-13 07:51:52,484 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:51:52" (1/1) ... [2021-10-13 07:51:52,492 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:51:52,505 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:51:52,632 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_9396c66e-4673-4066-8fbe-8d6b51383274/sv-benchmarks/c/float-benchs/interpolation2.c[450,463] [2021-10-13 07:51:52,665 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:51:52,692 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:51:52,715 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_9396c66e-4673-4066-8fbe-8d6b51383274/sv-benchmarks/c/float-benchs/interpolation2.c[450,463] [2021-10-13 07:51:52,743 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:51:52,769 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:51:52,769 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:51:52 WrapperNode [2021-10-13 07:51:52,770 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:51:52,771 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:51:52,771 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:51:52,772 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:51:52,782 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:51:52" (1/1) ... [2021-10-13 07:51:52,841 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:51:52" (1/1) ... [2021-10-13 07:51:52,876 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:51:52,877 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:51:52,877 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:51:52,877 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:51:52,886 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:51:52" (1/1) ... [2021-10-13 07:51:52,886 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:51:52" (1/1) ... [2021-10-13 07:51:52,897 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:51:52" (1/1) ... [2021-10-13 07:51:52,898 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:51:52" (1/1) ... [2021-10-13 07:51:52,917 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:51:52" (1/1) ... [2021-10-13 07:51:52,928 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:51:52" (1/1) ... [2021-10-13 07:51:52,932 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:51:52" (1/1) ... [2021-10-13 07:51:52,942 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:51:52,946 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:51:52,946 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:51:52,946 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:51:52,947 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:51:52" (1/1) ... [2021-10-13 07:51:52,955 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:51:52,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9396c66e-4673-4066-8fbe-8d6b51383274/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:51:52,978 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9396c66e-4673-4066-8fbe-8d6b51383274/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:51:53,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9396c66e-4673-4066-8fbe-8d6b51383274/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:51:53,025 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4 [2021-10-13 07:51:53,025 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-13 07:51:53,026 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:51:53,026 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2021-10-13 07:51:53,026 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:51:53,026 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:51:53,026 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 07:51:55,682 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:51:55,682 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-10-13 07:51:55,685 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:51:55 BoogieIcfgContainer [2021-10-13 07:51:55,685 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:51:55,688 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:51:55,688 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:51:55,692 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:51:55,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:51:52" (1/3) ... [2021-10-13 07:51:55,693 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ffa3fc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:51:55, skipping insertion in model container [2021-10-13 07:51:55,694 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:51:52" (2/3) ... [2021-10-13 07:51:55,694 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ffa3fc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:51:55, skipping insertion in model container [2021-10-13 07:51:55,695 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:51:55" (3/3) ... [2021-10-13 07:51:55,696 INFO L111 eAbstractionObserver]: Analyzing ICFG interpolation2.c [2021-10-13 07:51:55,703 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:51:55,704 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 07:51:55,764 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:51:55,772 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 07:51:55,773 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 07:51:55,790 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 16 states have internal predecessors, (22), 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 07:51:55,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-13 07:51:55,796 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:51:55,797 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:51:55,798 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:51:55,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:51:55,805 INFO L82 PathProgramCache]: Analyzing trace with hash -1235833265, now seen corresponding path program 1 times [2021-10-13 07:51:55,820 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:51:55,821 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [148845353] [2021-10-13 07:51:55,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:51:55,822 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:51:55,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9396c66e-4673-4066-8fbe-8d6b51383274/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:51:55,830 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9396c66e-4673-4066-8fbe-8d6b51383274/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:51:55,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9396c66e-4673-4066-8fbe-8d6b51383274/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 07:51:55,913 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9396c66e-4673-4066-8fbe-8d6b51383274/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-13 07:51:56,109 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9396c66e-4673-4066-8fbe-8d6b51383274/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:51:56,110 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Cannot name open terms at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.(TraceCheck.java:232) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheck.(InterpolatingTraceCheck.java:90) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:132) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:211) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:608) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:53) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:392) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Cannot name open terms at de.uni_freiburg.informatik.ultimate.logic.NoopScript.annotate(NoopScript.java:577) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.annotate(WrapperScript.java:282) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.annotate(WrapperScript.java:282) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.AnnotateAndAssertCodeBlocks.annotateAndAssertTerm(AnnotateAndAssertCodeBlocks.java:192) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.AnnotateAndAssertConjunctsOfCodeBlocks.annotateAndAssertTerm(AnnotateAndAssertConjunctsOfCodeBlocks.java:238) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.AnnotateAndAssertConjunctsOfCodeBlocks.annotateAndAssertConjuncts(AnnotateAndAssertConjunctsOfCodeBlocks.java:135) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.AnnotateAndAssertConjunctsOfCodeBlocks.annotateAndAssertNonCall(AnnotateAndAssertConjunctsOfCodeBlocks.java:184) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.AnnotateAndAsserter.buildAnnotatedSsaAndAssertTerms(AnnotateAndAsserter.java:101) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.checkTrace(TraceCheck.java:312) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.(TraceCheck.java:211) ... 31 more [2021-10-13 07:51:56,121 INFO L168 Benchmark]: Toolchain (without parser) took 3643.80 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 33.9 MB in the beginning and 39.1 MB in the end (delta: -5.2 MB). Peak memory consumption was 5.0 MB. Max. memory is 16.1 GB. [2021-10-13 07:51:56,122 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 56.6 MB. Free memory was 36.3 MB in the beginning and 36.2 MB in the end (delta: 42.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:51:56,123 INFO L168 Benchmark]: CACSL2BoogieTranslator took 293.14 ms. Allocated memory is still 56.6 MB. Free memory was 33.7 MB in the beginning and 39.8 MB in the end (delta: -6.0 MB). Peak memory consumption was 14.3 MB. Max. memory is 16.1 GB. [2021-10-13 07:51:56,128 INFO L168 Benchmark]: Boogie Procedure Inliner took 104.95 ms. Allocated memory is still 56.6 MB. Free memory was 39.8 MB in the beginning and 38.0 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:51:56,130 INFO L168 Benchmark]: Boogie Preprocessor took 68.21 ms. Allocated memory is still 56.6 MB. Free memory was 37.8 MB in the beginning and 36.3 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:51:56,132 INFO L168 Benchmark]: RCFGBuilder took 2739.28 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 36.3 MB in the beginning and 48.8 MB in the end (delta: -12.5 MB). Peak memory consumption was 13.8 MB. Max. memory is 16.1 GB. [2021-10-13 07:51:56,134 INFO L168 Benchmark]: TraceAbstraction took 430.52 ms. Allocated memory is still 69.2 MB. Free memory was 48.3 MB in the beginning and 39.1 MB in the end (delta: 9.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 07:51:56,140 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 56.6 MB. Free memory was 36.3 MB in the beginning and 36.2 MB in the end (delta: 42.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 293.14 ms. Allocated memory is still 56.6 MB. Free memory was 33.7 MB in the beginning and 39.8 MB in the end (delta: -6.0 MB). Peak memory consumption was 14.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 104.95 ms. Allocated memory is still 56.6 MB. Free memory was 39.8 MB in the beginning and 38.0 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 68.21 ms. Allocated memory is still 56.6 MB. Free memory was 37.8 MB in the beginning and 36.3 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 2739.28 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 36.3 MB in the beginning and 48.8 MB in the end (delta: -12.5 MB). Peak memory consumption was 13.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 430.52 ms. Allocated memory is still 69.2 MB. Free memory was 48.3 MB in the beginning and 39.1 MB in the end (delta: 9.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Cannot name open terms de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Cannot name open terms: de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.(TraceCheck.java:232) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-10-13 07:51:56,223 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9396c66e-4673-4066-8fbe-8d6b51383274/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...