./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1121b.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb46c600-f2b2-4cc2-9ae7-ecac4fcb7c45/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb46c600-f2b2-4cc2-9ae7-ecac4fcb7c45/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb46c600-f2b2-4cc2-9ae7-ecac4fcb7c45/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb46c600-f2b2-4cc2-9ae7-ecac4fcb7c45/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1121b.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb46c600-f2b2-4cc2-9ae7-ecac4fcb7c45/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb46c600-f2b2-4cc2-9ae7-ecac4fcb7c45/bin/utaipan-mTDlp9Zugs --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 cc6ee66f7e92cd1fd8921d2fb3fed6eb54ee605f ..................................................................................................................................................................................................................................................................................................................... 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_eb46c600-f2b2-4cc2-9ae7-ecac4fcb7c45/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb46c600-f2b2-4cc2-9ae7-ecac4fcb7c45/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb46c600-f2b2-4cc2-9ae7-ecac4fcb7c45/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb46c600-f2b2-4cc2-9ae7-ecac4fcb7c45/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1121b.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb46c600-f2b2-4cc2-9ae7-ecac4fcb7c45/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb46c600-f2b2-4cc2-9ae7-ecac4fcb7c45/bin/utaipan-mTDlp9Zugs --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 cc6ee66f7e92cd1fd8921d2fb3fed6eb54ee605f ...................................................................................................................................................................................................................................................................... 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-5709675 [2021-10-16 02:37:12,845 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:37:12,848 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:37:12,902 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:37:12,903 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:37:12,907 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:37:12,909 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:37:12,913 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:37:12,916 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:37:12,923 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:37:12,924 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:37:12,926 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:37:12,926 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:37:12,927 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:37:12,929 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:37:12,930 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:37:12,931 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:37:12,932 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:37:12,934 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:37:12,936 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:37:12,938 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:37:12,939 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:37:12,941 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:37:12,941 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:37:12,945 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:37:12,945 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:37:12,946 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:37:12,947 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:37:12,947 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:37:12,948 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:37:12,949 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:37:12,950 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:37:12,950 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:37:12,951 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:37:12,953 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:37:12,953 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:37:12,954 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:37:12,958 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:37:12,959 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:37:12,960 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:37:12,961 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:37:12,962 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb46c600-f2b2-4cc2-9ae7-ecac4fcb7c45/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-16 02:37:13,002 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:37:13,002 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:37:13,003 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:37:13,004 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:37:13,004 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:37:13,004 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:37:13,005 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-16 02:37:13,005 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:37:13,010 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:37:13,011 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-16 02:37:13,011 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-16 02:37:13,011 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:37:13,011 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-16 02:37:13,012 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-16 02:37:13,012 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-16 02:37:13,012 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:37:13,013 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:37:13,013 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 02:37:13,013 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:37:13,013 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:37:13,013 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 02:37:13,013 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:37:13,013 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 02:37:13,014 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:37:13,014 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:37:13,014 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 02:37:13,014 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:37:13,014 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 02:37:13,014 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:37:13,015 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:37:13,015 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:37:13,015 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:37:13,015 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:37:13,016 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 02:37:13,016 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-16 02:37:13,016 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-16 02:37:13,016 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 02:37:13,016 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:37:13,017 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:37:13,017 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_eb46c600-f2b2-4cc2-9ae7-ecac4fcb7c45/bin/utaipan-mTDlp9Zugs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb46c600-f2b2-4cc2-9ae7-ecac4fcb7c45/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cc6ee66f7e92cd1fd8921d2fb3fed6eb54ee605f [2021-10-16 02:37:13,285 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:37:13,319 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:37:13,322 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:37:13,323 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:37:13,324 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:37:13,325 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb46c600-f2b2-4cc2-9ae7-ecac4fcb7c45/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/float-newlib/float_req_bl_1121b.c [2021-10-16 02:37:13,415 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb46c600-f2b2-4cc2-9ae7-ecac4fcb7c45/bin/utaipan-mTDlp9Zugs/data/665a0572a/1dada88be14c4a76a2c481df277e4a0a/FLAG2dcda2eb3 [2021-10-16 02:37:13,896 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:37:13,897 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb46c600-f2b2-4cc2-9ae7-ecac4fcb7c45/sv-benchmarks/c/float-newlib/float_req_bl_1121b.c [2021-10-16 02:37:13,904 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb46c600-f2b2-4cc2-9ae7-ecac4fcb7c45/bin/utaipan-mTDlp9Zugs/data/665a0572a/1dada88be14c4a76a2c481df277e4a0a/FLAG2dcda2eb3 [2021-10-16 02:37:14,267 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb46c600-f2b2-4cc2-9ae7-ecac4fcb7c45/bin/utaipan-mTDlp9Zugs/data/665a0572a/1dada88be14c4a76a2c481df277e4a0a [2021-10-16 02:37:14,269 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:37:14,271 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:37:14,272 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:37:14,272 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:37:14,276 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:37:14,277 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:37:14" (1/1) ... [2021-10-16 02:37:14,278 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79abf930 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:37:14, skipping insertion in model container [2021-10-16 02:37:14,278 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:37:14" (1/1) ... [2021-10-16 02:37:14,285 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:37:14,303 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:37:14,492 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_eb46c600-f2b2-4cc2-9ae7-ecac4fcb7c45/sv-benchmarks/c/float-newlib/float_req_bl_1121b.c[2700,2713] [2021-10-16 02:37:14,495 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:37:14,502 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 02:37:14,536 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_eb46c600-f2b2-4cc2-9ae7-ecac4fcb7c45/sv-benchmarks/c/float-newlib/float_req_bl_1121b.c[2700,2713] [2021-10-16 02:37:14,537 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:37:14,550 INFO L208 MainTranslator]: Completed translation [2021-10-16 02:37:14,551 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:37:14 WrapperNode [2021-10-16 02:37:14,551 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:37:14,552 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 02:37:14,552 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 02:37:14,552 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 02:37:14,557 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:37:14" (1/1) ... [2021-10-16 02:37:14,575 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:37:14" (1/1) ... [2021-10-16 02:37:14,615 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:37:14,616 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:37:14,616 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:37:14,616 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:37:14,624 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:37:14" (1/1) ... [2021-10-16 02:37:14,625 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:37:14" (1/1) ... [2021-10-16 02:37:14,628 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:37:14" (1/1) ... [2021-10-16 02:37:14,629 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:37:14" (1/1) ... [2021-10-16 02:37:14,638 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:37:14" (1/1) ... [2021-10-16 02:37:14,644 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:37:14" (1/1) ... [2021-10-16 02:37:14,647 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:37:14" (1/1) ... [2021-10-16 02:37:14,650 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:37:14,651 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:37:14,652 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:37:14,652 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:37:14,656 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:37:14" (1/1) ... [2021-10-16 02:37:14,673 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:37:14,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb46c600-f2b2-4cc2-9ae7-ecac4fcb7c45/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:37:14,715 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb46c600-f2b2-4cc2-9ae7-ecac4fcb7c45/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:37:14,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb46c600-f2b2-4cc2-9ae7-ecac4fcb7c45/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:37:14,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-16 02:37:14,749 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 02:37:14,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-16 02:37:14,750 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-10-16 02:37:14,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-10-16 02:37:14,750 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:37:14,750 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:37:14,751 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-16 02:37:14,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2021-10-16 02:37:14,751 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-16 02:37:15,292 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:37:15,293 INFO L299 CfgBuilder]: Removed 20 assume(true) statements. [2021-10-16 02:37:15,295 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:37:15 BoogieIcfgContainer [2021-10-16 02:37:15,295 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:37:15,297 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:37:15,298 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:37:15,301 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:37:15,302 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:37:14" (1/3) ... [2021-10-16 02:37:15,303 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@502f61ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:37:15, skipping insertion in model container [2021-10-16 02:37:15,303 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:37:14" (2/3) ... [2021-10-16 02:37:15,303 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@502f61ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:37:15, skipping insertion in model container [2021-10-16 02:37:15,304 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:37:15" (3/3) ... [2021-10-16 02:37:15,305 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1121b.c [2021-10-16 02:37:15,311 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:37:15,311 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-16 02:37:15,358 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:37:15,364 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 [2021-10-16 02:37:15,364 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-16 02:37:15,376 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 32 states have (on average 1.75) internal successors, (56), 33 states have internal predecessors, (56), 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) [2021-10-16 02:37:15,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-16 02:37:15,381 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:37:15,381 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:37:15,382 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:37:15,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:37:15,388 INFO L82 PathProgramCache]: Analyzing trace with hash -2021166095, now seen corresponding path program 1 times [2021-10-16 02:37:15,398 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:37:15,398 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823000871] [2021-10-16 02:37:15,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:37:15,400 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:37:15,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:37:15,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:37:15,544 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:37:15,544 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823000871] [2021-10-16 02:37:15,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823000871] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:37:15,545 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:37:15,546 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-16 02:37:15,548 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104337603] [2021-10-16 02:37:15,553 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-16 02:37:15,553 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:37:15,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-16 02:37:15,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 02:37:15,570 INFO L87 Difference]: Start difference. First operand has 34 states, 32 states have (on average 1.75) internal successors, (56), 33 states have internal predecessors, (56), 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 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2021-10-16 02:37:15,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:37:15,588 INFO L93 Difference]: Finished difference Result 67 states and 111 transitions. [2021-10-16 02:37:15,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-16 02:37:15,589 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 8 [2021-10-16 02:37:15,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:37:15,598 INFO L225 Difference]: With dead ends: 67 [2021-10-16 02:37:15,598 INFO L226 Difference]: Without dead ends: 32 [2021-10-16 02:37:15,601 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 02:37:15,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-10-16 02:37:15,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2021-10-16 02:37:15,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.4193548387096775) internal successors, (44), 31 states have internal predecessors, (44), 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) [2021-10-16 02:37:15,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 44 transitions. [2021-10-16 02:37:15,633 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 44 transitions. Word has length 8 [2021-10-16 02:37:15,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:37:15,634 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 44 transitions. [2021-10-16 02:37:15,634 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2021-10-16 02:37:15,634 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 44 transitions. [2021-10-16 02:37:15,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-16 02:37:15,635 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:37:15,635 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:37:15,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-16 02:37:15,636 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:37:15,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:37:15,637 INFO L82 PathProgramCache]: Analyzing trace with hash 342564116, now seen corresponding path program 1 times [2021-10-16 02:37:15,637 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:37:15,637 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149428214] [2021-10-16 02:37:15,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:37:15,638 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:37:15,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-16 02:37:15,711 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-16 02:37:15,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-16 02:37:15,787 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-16 02:37:15,794 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-16 02:37:15,796 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:37:15,798 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-16 02:37:15,804 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 02:37:15,843 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 02:37:15 BoogieIcfgContainer [2021-10-16 02:37:15,843 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 02:37:15,845 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 02:37:15,845 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 02:37:15,845 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 02:37:15,846 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:37:15" (3/4) ... [2021-10-16 02:37:15,848 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-16 02:37:15,849 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 02:37:15,851 INFO L168 Benchmark]: Toolchain (without parser) took 1578.81 ms. Allocated memory was 94.4 MB in the beginning and 136.3 MB in the end (delta: 41.9 MB). Free memory was 57.5 MB in the beginning and 60.4 MB in the end (delta: -2.9 MB). Peak memory consumption was 37.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:37:15,851 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 94.4 MB. Free memory was 74.1 MB in the beginning and 74.0 MB in the end (delta: 61.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:37:15,852 INFO L168 Benchmark]: CACSL2BoogieTranslator took 279.02 ms. Allocated memory was 94.4 MB in the beginning and 136.3 MB in the end (delta: 41.9 MB). Free memory was 57.3 MB in the beginning and 110.2 MB in the end (delta: -52.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-16 02:37:15,853 INFO L168 Benchmark]: Boogie Procedure Inliner took 63.52 ms. Allocated memory is still 136.3 MB. Free memory was 110.2 MB in the beginning and 108.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:37:15,854 INFO L168 Benchmark]: Boogie Preprocessor took 34.66 ms. Allocated memory is still 136.3 MB. Free memory was 108.1 MB in the beginning and 106.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:37:15,854 INFO L168 Benchmark]: RCFGBuilder took 644.09 ms. Allocated memory is still 136.3 MB. Free memory was 106.5 MB in the beginning and 88.2 MB in the end (delta: 18.4 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2021-10-16 02:37:15,855 INFO L168 Benchmark]: TraceAbstraction took 546.63 ms. Allocated memory is still 136.3 MB. Free memory was 87.7 MB in the beginning and 60.9 MB in the end (delta: 26.8 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. [2021-10-16 02:37:15,855 INFO L168 Benchmark]: Witness Printer took 3.77 ms. Allocated memory is still 136.3 MB. Free memory was 60.9 MB in the beginning and 60.4 MB in the end (delta: 519.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:37:15,859 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 94.4 MB. Free memory was 74.1 MB in the beginning and 74.0 MB in the end (delta: 61.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 279.02 ms. Allocated memory was 94.4 MB in the beginning and 136.3 MB in the end (delta: 41.9 MB). Free memory was 57.3 MB in the beginning and 110.2 MB in the end (delta: -52.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 63.52 ms. Allocated memory is still 136.3 MB. Free memory was 110.2 MB in the beginning and 108.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 34.66 ms. Allocated memory is still 136.3 MB. Free memory was 108.1 MB in the beginning and 106.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 644.09 ms. Allocated memory is still 136.3 MB. Free memory was 106.5 MB in the beginning and 88.2 MB in the end (delta: 18.4 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 546.63 ms. Allocated memory is still 136.3 MB. Free memory was 87.7 MB in the beginning and 60.9 MB in the end (delta: 26.8 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. * Witness Printer took 3.77 ms. Allocated memory is still 136.3 MB. Free memory was 60.9 MB in the beginning and 60.4 MB in the end (delta: 519.4 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: 124]: 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 110, overapproximation of someUnaryDOUBLEoperation at line 16, overapproximation of bitwiseAnd at line 32, overapproximation of someUnaryFLOAToperation at line 119, overapproximation of bitwiseXor at line 33, overapproximation of someBinaryArithmeticFLOAToperation at line 37. Possible FailurePath: [L14-L17] static const float one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L118] float x = __VERIFIER_nondet_float(); [L119] float y = -0.0f; [L20] __int32_t n, hx, hy, hz, ix, iy, sx, i; VAL [one_fmod=1, Zero_fmod={9:0}] [L23] ieee_float_shape_type gf_u; [L24] gf_u.value = (x) [L25] EXPR gf_u.word [L25] (hx) = gf_u.word [L28] ieee_float_shape_type gf_u; [L29] gf_u.value = (y) [L30] EXPR gf_u.word [L30] (hy) = gf_u.word [L32] sx = hx & 0x80000000 [L33] hx ^= sx [L34] hy &= 0x7fffffff VAL [one_fmod=1, Zero_fmod={9:0}] [L36] COND TRUE ((hy) == 0) || !((hx) < 0x7f800000L) || ((hy) > 0x7f800000L) [L37] return (x * y) / (x * y); VAL [one_fmod=1, Zero_fmod={9:0}] [L120] float res = fmod_float(x, y); [L110] return x != x; [L123] COND TRUE !isnan_float(res) [L124] reach_error() VAL [one_fmod=1, Zero_fmod={9:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 34 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 446.6ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 8.5ms, AutomataDifference: 46.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 8.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 46 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 18.4ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 11.0ms SsaConstructionTime, 93.7ms SatisfiabilityAnalysisTime, 49.1ms InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 7 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 [2021-10-16 02:37:15,911 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb46c600-f2b2-4cc2-9ae7-ecac4fcb7c45/bin/utaipan-mTDlp9Zugs/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-5709675 [2021-10-16 02:37:18,337 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:37:18,340 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:37:18,388 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:37:18,389 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:37:18,392 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:37:18,394 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:37:18,399 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:37:18,402 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:37:18,412 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:37:18,414 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:37:18,415 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:37:18,416 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:37:18,420 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:37:18,422 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:37:18,428 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:37:18,430 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:37:18,431 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:37:18,433 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:37:18,440 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:37:18,442 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:37:18,443 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:37:18,447 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:37:18,449 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:37:18,460 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:37:18,460 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:37:18,461 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:37:18,463 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:37:18,464 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:37:18,465 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:37:18,465 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:37:18,466 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:37:18,468 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:37:18,469 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:37:18,470 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:37:18,470 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:37:18,472 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:37:18,472 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:37:18,472 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:37:18,474 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:37:18,475 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:37:18,476 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb46c600-f2b2-4cc2-9ae7-ecac4fcb7c45/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-16 02:37:18,527 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:37:18,527 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:37:18,528 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:37:18,529 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:37:18,529 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:37:18,529 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:37:18,529 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:37:18,529 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:37:18,530 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:37:18,531 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:37:18,532 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:37:18,532 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:37:18,532 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:37:18,533 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 02:37:18,533 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:37:18,533 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 02:37:18,533 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:37:18,533 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-16 02:37:18,533 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-16 02:37:18,534 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:37:18,534 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 02:37:18,534 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:37:18,534 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 02:37:18,535 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:37:18,535 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-16 02:37:18,535 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:37:18,535 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:37:18,535 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:37:18,536 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:37:18,536 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 02:37:18,536 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-16 02:37:18,536 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-16 02:37:18,536 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 02:37:18,537 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:37:18,537 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:37:18,537 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_eb46c600-f2b2-4cc2-9ae7-ecac4fcb7c45/bin/utaipan-mTDlp9Zugs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb46c600-f2b2-4cc2-9ae7-ecac4fcb7c45/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cc6ee66f7e92cd1fd8921d2fb3fed6eb54ee605f [2021-10-16 02:37:18,924 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:37:18,948 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:37:18,950 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:37:18,952 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:37:18,953 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:37:18,955 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb46c600-f2b2-4cc2-9ae7-ecac4fcb7c45/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/float-newlib/float_req_bl_1121b.c [2021-10-16 02:37:19,026 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb46c600-f2b2-4cc2-9ae7-ecac4fcb7c45/bin/utaipan-mTDlp9Zugs/data/e00762463/049b771c1be5423bbe266d02d17a80b6/FLAG2edccd5e3 [2021-10-16 02:37:19,624 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:37:19,626 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb46c600-f2b2-4cc2-9ae7-ecac4fcb7c45/sv-benchmarks/c/float-newlib/float_req_bl_1121b.c [2021-10-16 02:37:19,636 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb46c600-f2b2-4cc2-9ae7-ecac4fcb7c45/bin/utaipan-mTDlp9Zugs/data/e00762463/049b771c1be5423bbe266d02d17a80b6/FLAG2edccd5e3 [2021-10-16 02:37:19,954 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb46c600-f2b2-4cc2-9ae7-ecac4fcb7c45/bin/utaipan-mTDlp9Zugs/data/e00762463/049b771c1be5423bbe266d02d17a80b6 [2021-10-16 02:37:19,956 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:37:19,958 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:37:19,959 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:37:19,959 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:37:19,963 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:37:19,964 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:37:19" (1/1) ... [2021-10-16 02:37:19,965 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44ddfbda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:37:19, skipping insertion in model container [2021-10-16 02:37:19,965 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:37:19" (1/1) ... [2021-10-16 02:37:19,972 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:37:19,992 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:37:20,175 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_eb46c600-f2b2-4cc2-9ae7-ecac4fcb7c45/sv-benchmarks/c/float-newlib/float_req_bl_1121b.c[2700,2713] [2021-10-16 02:37:20,196 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:37:20,218 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 02:37:20,269 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_eb46c600-f2b2-4cc2-9ae7-ecac4fcb7c45/sv-benchmarks/c/float-newlib/float_req_bl_1121b.c[2700,2713] [2021-10-16 02:37:20,270 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:37:20,291 INFO L208 MainTranslator]: Completed translation [2021-10-16 02:37:20,291 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:37:20 WrapperNode [2021-10-16 02:37:20,291 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:37:20,293 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 02:37:20,293 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 02:37:20,293 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 02:37:20,300 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:37:20" (1/1) ... [2021-10-16 02:37:20,313 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:37:20" (1/1) ... [2021-10-16 02:37:20,338 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:37:20,339 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:37:20,339 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:37:20,339 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:37:20,348 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:37:20" (1/1) ... [2021-10-16 02:37:20,348 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:37:20" (1/1) ... [2021-10-16 02:37:20,354 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:37:20" (1/1) ... [2021-10-16 02:37:20,355 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:37:20" (1/1) ... [2021-10-16 02:37:20,366 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:37:20" (1/1) ... [2021-10-16 02:37:20,372 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:37:20" (1/1) ... [2021-10-16 02:37:20,375 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:37:20" (1/1) ... [2021-10-16 02:37:20,379 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:37:20,380 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:37:20,381 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:37:20,381 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:37:20,381 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:37:20" (1/1) ... [2021-10-16 02:37:20,388 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:37:20,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb46c600-f2b2-4cc2-9ae7-ecac4fcb7c45/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:37:20,424 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb46c600-f2b2-4cc2-9ae7-ecac4fcb7c45/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:37:20,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb46c600-f2b2-4cc2-9ae7-ecac4fcb7c45/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:37:20,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4 [2021-10-16 02:37:20,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-16 02:37:20,473 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 02:37:20,473 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2021-10-16 02:37:20,474 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-16 02:37:20,474 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:37:20,474 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:37:20,474 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2021-10-16 02:37:20,474 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-16 02:37:20,475 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-16 02:37:23,495 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:37:23,495 INFO L299 CfgBuilder]: Removed 20 assume(true) statements. [2021-10-16 02:37:23,500 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:37:23 BoogieIcfgContainer [2021-10-16 02:37:23,500 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:37:23,502 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:37:23,502 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:37:23,505 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:37:23,509 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:37:19" (1/3) ... [2021-10-16 02:37:23,510 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18462791 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:37:23, skipping insertion in model container [2021-10-16 02:37:23,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:37:20" (2/3) ... [2021-10-16 02:37:23,511 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18462791 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:37:23, skipping insertion in model container [2021-10-16 02:37:23,511 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:37:23" (3/3) ... [2021-10-16 02:37:23,512 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1121b.c [2021-10-16 02:37:23,518 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:37:23,519 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-16 02:37:23,567 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:37:23,573 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 [2021-10-16 02:37:23,574 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-16 02:37:23,589 INFO L276 IsEmpty]: Start isEmpty. Operand has 42 states, 40 states have (on average 1.75) internal successors, (70), 41 states have internal predecessors, (70), 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) [2021-10-16 02:37:23,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-16 02:37:23,594 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:37:23,595 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:37:23,595 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:37:23,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:37:23,601 INFO L82 PathProgramCache]: Analyzing trace with hash 666555284, now seen corresponding path program 1 times [2021-10-16 02:37:23,613 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:37:23,614 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1762697175] [2021-10-16 02:37:23,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:37:23,615 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:37:23,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb46c600-f2b2-4cc2-9ae7-ecac4fcb7c45/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:37:23,618 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb46c600-f2b2-4cc2-9ae7-ecac4fcb7c45/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:37:23,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb46c600-f2b2-4cc2-9ae7-ecac4fcb7c45/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-16 02:37:23,719 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb46c600-f2b2-4cc2-9ae7-ecac4fcb7c45/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-16 02:37:23,911 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb46c600-f2b2-4cc2-9ae7-ecac4fcb7c45/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:37:23,912 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 [2021-10-16 02:37:23,918 INFO L168 Benchmark]: Toolchain (without parser) took 3958.81 ms. Allocated memory is still 65.0 MB. Free memory was 43.9 MB in the beginning and 32.9 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.5 MB. Max. memory is 16.1 GB. [2021-10-16 02:37:23,919 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 65.0 MB. Free memory is still 44.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:37:23,920 INFO L168 Benchmark]: CACSL2BoogieTranslator took 332.73 ms. Allocated memory is still 65.0 MB. Free memory was 43.8 MB in the beginning and 45.6 MB in the end (delta: -1.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-16 02:37:23,921 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.00 ms. Allocated memory is still 65.0 MB. Free memory was 45.4 MB in the beginning and 43.6 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:37:23,922 INFO L168 Benchmark]: Boogie Preprocessor took 40.55 ms. Allocated memory is still 65.0 MB. Free memory was 43.4 MB in the beginning and 41.5 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:37:23,923 INFO L168 Benchmark]: RCFGBuilder took 3119.69 ms. Allocated memory is still 65.0 MB. Free memory was 41.5 MB in the beginning and 42.3 MB in the end (delta: -820.1 kB). Peak memory consumption was 17.0 MB. Max. memory is 16.1 GB. [2021-10-16 02:37:23,923 INFO L168 Benchmark]: TraceAbstraction took 414.07 ms. Allocated memory is still 65.0 MB. Free memory was 41.8 MB in the beginning and 32.9 MB in the end (delta: 8.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-16 02:37:23,927 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 65.0 MB. Free memory is still 44.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 332.73 ms. Allocated memory is still 65.0 MB. Free memory was 43.8 MB in the beginning and 45.6 MB in the end (delta: -1.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 46.00 ms. Allocated memory is still 65.0 MB. Free memory was 45.4 MB in the beginning and 43.6 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 40.55 ms. Allocated memory is still 65.0 MB. Free memory was 43.4 MB in the beginning and 41.5 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 3119.69 ms. Allocated memory is still 65.0 MB. Free memory was 41.5 MB in the beginning and 42.3 MB in the end (delta: -820.1 kB). Peak memory consumption was 17.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 414.07 ms. Allocated memory is still 65.0 MB. Free memory was 41.8 MB in the beginning and 32.9 MB in the end (delta: 8.9 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. [2021-10-16 02:37:24,007 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb46c600-f2b2-4cc2-9ae7-ecac4fcb7c45/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...