./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1122b.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_92cac3c7-95ed-48d7-b4ff-a127773915d1/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cac3c7-95ed-48d7-b4ff-a127773915d1/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_92cac3c7-95ed-48d7-b4ff-a127773915d1/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cac3c7-95ed-48d7-b4ff-a127773915d1/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1122b.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cac3c7-95ed-48d7-b4ff-a127773915d1/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_92cac3c7-95ed-48d7-b4ff-a127773915d1/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 e37ba74c70ee452f780b10cba83059c905066e35 ........................................................................................................................................................................................................................................................................................................................... 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_92cac3c7-95ed-48d7-b4ff-a127773915d1/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cac3c7-95ed-48d7-b4ff-a127773915d1/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_92cac3c7-95ed-48d7-b4ff-a127773915d1/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cac3c7-95ed-48d7-b4ff-a127773915d1/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1122b.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cac3c7-95ed-48d7-b4ff-a127773915d1/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_92cac3c7-95ed-48d7-b4ff-a127773915d1/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 e37ba74c70ee452f780b10cba83059c905066e35 ...................................................................................................................................................................................................................................................................... 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 07:13:04,724 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:13:04,727 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:13:04,787 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:13:04,787 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:13:04,792 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:13:04,794 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:13:04,798 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:13:04,801 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:13:04,809 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:13:04,810 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:13:04,812 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:13:04,812 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:13:04,815 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:13:04,817 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:13:04,824 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:13:04,826 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:13:04,827 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:13:04,830 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:13:04,840 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:13:04,841 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:13:04,843 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:13:04,846 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:13:04,847 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:13:04,851 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:13:04,852 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:13:04,852 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:13:04,854 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:13:04,855 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:13:04,856 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:13:04,857 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:13:04,858 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:13:04,859 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:13:04,861 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:13:04,862 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:13:04,863 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:13:04,863 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:13:04,864 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:13:04,864 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:13:04,865 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:13:04,866 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:13:04,867 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cac3c7-95ed-48d7-b4ff-a127773915d1/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-13 07:13:04,909 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:13:04,910 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:13:04,911 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:13:04,911 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:13:04,912 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:13:04,912 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:13:04,912 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 07:13:04,912 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:13:04,919 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:13:04,919 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 07:13:04,921 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 07:13:04,921 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:13:04,921 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 07:13:04,922 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 07:13:04,922 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 07:13:04,923 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:13:04,923 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:13:04,924 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 07:13:04,924 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:13:04,924 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:13:04,924 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:13:04,925 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:13:04,925 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:13:04,925 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:13:04,925 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:13:04,926 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:13:04,926 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:13:04,926 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:13:04,926 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:13:04,927 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:13:04,927 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:13:04,927 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:13:04,928 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:13:04,928 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:13:04,928 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 07:13:04,928 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 07:13:04,929 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:13:04,929 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:13:04,929 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:13:04,929 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_92cac3c7-95ed-48d7-b4ff-a127773915d1/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cac3c7-95ed-48d7-b4ff-a127773915d1/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e37ba74c70ee452f780b10cba83059c905066e35 [2021-10-13 07:13:05,262 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:13:05,290 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:13:05,292 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:13:05,293 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:13:05,295 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:13:05,296 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cac3c7-95ed-48d7-b4ff-a127773915d1/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/float-newlib/double_req_bl_1122b.c [2021-10-13 07:13:05,367 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cac3c7-95ed-48d7-b4ff-a127773915d1/bin/utaipan-q2qaUkNPG8/data/826b9167a/768e46ac81a24d19909f27fffa5654cc/FLAGe3d0fae21 [2021-10-13 07:13:05,874 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:13:05,875 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cac3c7-95ed-48d7-b4ff-a127773915d1/sv-benchmarks/c/float-newlib/double_req_bl_1122b.c [2021-10-13 07:13:05,890 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cac3c7-95ed-48d7-b4ff-a127773915d1/bin/utaipan-q2qaUkNPG8/data/826b9167a/768e46ac81a24d19909f27fffa5654cc/FLAGe3d0fae21 [2021-10-13 07:13:06,225 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cac3c7-95ed-48d7-b4ff-a127773915d1/bin/utaipan-q2qaUkNPG8/data/826b9167a/768e46ac81a24d19909f27fffa5654cc [2021-10-13 07:13:06,227 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:13:06,228 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:13:06,230 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:13:06,230 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:13:06,236 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:13:06,237 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:13:06" (1/1) ... [2021-10-13 07:13:06,238 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5530f01e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:13:06, skipping insertion in model container [2021-10-13 07:13:06,238 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:13:06" (1/1) ... [2021-10-13 07:13:06,246 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:13:06,271 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:13:06,520 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_92cac3c7-95ed-48d7-b4ff-a127773915d1/sv-benchmarks/c/float-newlib/double_req_bl_1122b.c[3907,3920] [2021-10-13 07:13:06,523 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:13:06,539 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:13:06,588 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_92cac3c7-95ed-48d7-b4ff-a127773915d1/sv-benchmarks/c/float-newlib/double_req_bl_1122b.c[3907,3920] [2021-10-13 07:13:06,589 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:13:06,612 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:13:06,612 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:13:06 WrapperNode [2021-10-13 07:13:06,613 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:13:06,614 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:13:06,615 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:13:06,615 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:13:06,624 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:13:06" (1/1) ... [2021-10-13 07:13:06,654 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:13:06" (1/1) ... [2021-10-13 07:13:06,709 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:13:06,712 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:13:06,712 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:13:06,713 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:13:06,722 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:13:06" (1/1) ... [2021-10-13 07:13:06,723 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:13:06" (1/1) ... [2021-10-13 07:13:06,738 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:13:06" (1/1) ... [2021-10-13 07:13:06,740 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:13:06" (1/1) ... [2021-10-13 07:13:06,768 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:13:06" (1/1) ... [2021-10-13 07:13:06,775 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:13:06" (1/1) ... [2021-10-13 07:13:06,779 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:13:06" (1/1) ... [2021-10-13 07:13:06,787 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:13:06,788 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:13:06,792 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:13:06,792 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:13:06,793 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:13:06" (1/1) ... [2021-10-13 07:13:06,805 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:13:06,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cac3c7-95ed-48d7-b4ff-a127773915d1/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:13:06,829 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cac3c7-95ed-48d7-b4ff-a127773915d1/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:13:06,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cac3c7-95ed-48d7-b4ff-a127773915d1/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:13:06,891 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 07:13:06,892 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:13:06,894 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-13 07:13:06,894 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-10-13 07:13:06,894 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-10-13 07:13:06,895 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:13:06,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:13:06,895 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-13 07:13:06,895 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2021-10-13 07:13:06,895 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 07:13:07,606 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:13:07,607 INFO L299 CfgBuilder]: Removed 22 assume(true) statements. [2021-10-13 07:13:07,609 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:13:07 BoogieIcfgContainer [2021-10-13 07:13:07,609 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:13:07,611 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:13:07,612 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:13:07,619 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:13:07,619 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:13:06" (1/3) ... [2021-10-13 07:13:07,620 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c4b8327 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:13:07, skipping insertion in model container [2021-10-13 07:13:07,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:13:06" (2/3) ... [2021-10-13 07:13:07,621 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c4b8327 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:13:07, skipping insertion in model container [2021-10-13 07:13:07,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:13:07" (3/3) ... [2021-10-13 07:13:07,623 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1122b.c [2021-10-13 07:13:07,630 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:13:07,631 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 07:13:07,675 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:13:07,682 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 07:13:07,682 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 07:13:07,697 INFO L276 IsEmpty]: Start isEmpty. Operand has 39 states, 37 states have (on average 1.7837837837837838) internal successors, (66), 38 states have internal predecessors, (66), 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 07:13:07,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-13 07:13:07,702 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:13:07,703 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:13:07,703 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:13:07,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:13:07,709 INFO L82 PathProgramCache]: Analyzing trace with hash -159335407, now seen corresponding path program 1 times [2021-10-13 07:13:07,719 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:13:07,719 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648284551] [2021-10-13 07:13:07,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:13:07,721 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:13:07,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:13:07,902 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 07:13:07,903 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:13:07,903 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648284551] [2021-10-13 07:13:07,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648284551] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:13:07,904 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:13:07,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 07:13:07,909 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675803088] [2021-10-13 07:13:07,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-13 07:13:07,914 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:13:07,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-13 07:13:07,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 07:13:07,931 INFO L87 Difference]: Start difference. First operand has 39 states, 37 states have (on average 1.7837837837837838) internal successors, (66), 38 states have internal predecessors, (66), 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) [2021-10-13 07:13:07,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:13:07,958 INFO L93 Difference]: Finished difference Result 77 states and 131 transitions. [2021-10-13 07:13:07,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-13 07:13:07,960 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 [2021-10-13 07:13:07,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:13:07,972 INFO L225 Difference]: With dead ends: 77 [2021-10-13 07:13:07,973 INFO L226 Difference]: Without dead ends: 37 [2021-10-13 07:13:07,976 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 [2021-10-13 07:13:07,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-10-13 07:13:08,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2021-10-13 07:13:08,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.5) internal successors, (54), 36 states have internal predecessors, (54), 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 07:13:08,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 54 transitions. [2021-10-13 07:13:08,023 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 54 transitions. Word has length 8 [2021-10-13 07:13:08,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:13:08,023 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 54 transitions. [2021-10-13 07:13:08,024 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) [2021-10-13 07:13:08,024 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 54 transitions. [2021-10-13 07:13:08,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-13 07:13:08,025 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:13:08,025 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:13:08,026 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 07:13:08,027 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:13:08,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:13:08,032 INFO L82 PathProgramCache]: Analyzing trace with hash -1510972428, now seen corresponding path program 1 times [2021-10-13 07:13:08,033 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:13:08,033 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748937880] [2021-10-13 07:13:08,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:13:08,033 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:13:08,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 07:13:08,161 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 07:13:08,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 07:13:08,302 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-13 07:13:08,302 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-13 07:13:08,304 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:13:08,309 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-13 07:13:08,315 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 07:13:08,357 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:13:08 BoogieIcfgContainer [2021-10-13 07:13:08,358 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 07:13:08,360 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 07:13:08,360 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 07:13:08,360 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 07:13:08,361 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:13:07" (3/4) ... [2021-10-13 07:13:08,367 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-13 07:13:08,367 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 07:13:08,370 INFO L168 Benchmark]: Toolchain (without parser) took 2139.91 ms. Allocated memory was 88.1 MB in the beginning and 115.3 MB in the end (delta: 27.3 MB). Free memory was 52.1 MB in the beginning and 59.3 MB in the end (delta: -7.2 MB). Peak memory consumption was 19.7 MB. Max. memory is 16.1 GB. [2021-10-13 07:13:08,371 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 88.1 MB. Free memory is still 68.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:13:08,374 INFO L168 Benchmark]: CACSL2BoogieTranslator took 383.73 ms. Allocated memory was 88.1 MB in the beginning and 115.3 MB in the end (delta: 27.3 MB). Free memory was 51.9 MB in the beginning and 89.3 MB in the end (delta: -37.4 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. [2021-10-13 07:13:08,376 INFO L168 Benchmark]: Boogie Procedure Inliner took 97.07 ms. Allocated memory is still 115.3 MB. Free memory was 89.3 MB in the beginning and 86.8 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:13:08,384 INFO L168 Benchmark]: Boogie Preprocessor took 75.38 ms. Allocated memory is still 115.3 MB. Free memory was 86.8 MB in the beginning and 84.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:13:08,385 INFO L168 Benchmark]: RCFGBuilder took 821.53 ms. Allocated memory is still 115.3 MB. Free memory was 84.7 MB in the beginning and 87.8 MB in the end (delta: -3.0 MB). Peak memory consumption was 28.6 MB. Max. memory is 16.1 GB. [2021-10-13 07:13:08,385 INFO L168 Benchmark]: TraceAbstraction took 747.41 ms. Allocated memory is still 115.3 MB. Free memory was 87.4 MB in the beginning and 59.7 MB in the end (delta: 27.7 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. [2021-10-13 07:13:08,386 INFO L168 Benchmark]: Witness Printer took 7.44 ms. Allocated memory is still 115.3 MB. Free memory was 59.7 MB in the beginning and 59.3 MB in the end (delta: 426.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:13:08,395 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 88.1 MB. Free memory is still 68.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 383.73 ms. Allocated memory was 88.1 MB in the beginning and 115.3 MB in the end (delta: 27.3 MB). Free memory was 51.9 MB in the beginning and 89.3 MB in the end (delta: -37.4 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 97.07 ms. Allocated memory is still 115.3 MB. Free memory was 89.3 MB in the beginning and 86.8 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 75.38 ms. Allocated memory is still 115.3 MB. Free memory was 86.8 MB in the beginning and 84.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 821.53 ms. Allocated memory is still 115.3 MB. Free memory was 84.7 MB in the beginning and 87.8 MB in the end (delta: -3.0 MB). Peak memory consumption was 28.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 747.41 ms. Allocated memory is still 115.3 MB. Free memory was 87.4 MB in the beginning and 59.7 MB in the end (delta: 27.7 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. * Witness Printer took 7.44 ms. Allocated memory is still 115.3 MB. Free memory was 59.7 MB in the beginning and 59.3 MB in the end (delta: 426.9 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: 178]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseOr at line 46, overapproximation of someUnaryDOUBLEoperation at line 22, overapproximation of someBinaryArithmeticDOUBLEoperation at line 47, overapproximation of bitwiseAnd at line 41, overapproximation of someBinaryDOUBLEComparisonOperation at line 18, overapproximation of bitwiseXor at line 42. Possible FailurePath: [L20-L23] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L172] double x = -1.0 / 0.0; [L173] double y = __VERIFIER_nondet_double(); [L26] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L27] __uint32_t lx, ly, lz; VAL [one_fmod=1, Zero_fmod={9:0}] [L30] ieee_double_shape_type ew_u; [L31] ew_u.value = (x) [L32] EXPR ew_u.parts.msw [L32] (hx) = ew_u.parts.msw [L33] EXPR ew_u.parts.lsw [L33] (lx) = ew_u.parts.lsw [L36] ieee_double_shape_type ew_u; [L37] ew_u.value = (y) [L38] EXPR ew_u.parts.msw [L38] (hy) = ew_u.parts.msw [L39] EXPR ew_u.parts.lsw [L39] (ly) = ew_u.parts.lsw [L41] sx = hx & 0x80000000 [L42] hx ^= sx [L43] hy &= 0x7fffffff VAL [one_fmod=1, Zero_fmod={9:0}] [L45-L46] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L47] return (x * y) / (x * y); VAL [one_fmod=1, Zero_fmod={9:0}] [L174] double res = fmod_double(x, y); [L18] return x != x; [L177] COND TRUE !isnan_double(res) [L178] reach_error() VAL [one_fmod=1, Zero_fmod={9:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 39 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 640.2ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 10.0ms, AutomataDifference: 61.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 10.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 56 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=39occurred 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: 30.4ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 10.0ms SsaConstructionTime, 148.0ms SatisfiabilityAnalysisTime, 82.2ms 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 [2021-10-13 07:13:08,458 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cac3c7-95ed-48d7-b4ff-a127773915d1/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 07:13:10,993 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:13:10,996 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:13:11,046 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:13:11,047 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:13:11,051 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:13:11,053 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:13:11,058 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:13:11,061 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:13:11,069 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:13:11,070 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:13:11,072 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:13:11,072 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:13:11,075 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:13:11,077 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:13:11,081 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:13:11,083 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:13:11,084 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:13:11,086 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:13:11,094 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:13:11,096 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:13:11,097 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:13:11,100 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:13:11,102 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:13:11,111 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:13:11,112 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:13:11,112 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:13:11,114 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:13:11,115 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:13:11,116 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:13:11,117 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:13:11,118 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:13:11,120 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:13:11,121 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:13:11,122 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:13:11,123 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:13:11,124 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:13:11,124 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:13:11,124 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:13:11,126 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:13:11,127 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:13:11,133 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cac3c7-95ed-48d7-b4ff-a127773915d1/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-13 07:13:11,182 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:13:11,183 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:13:11,184 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:13:11,184 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:13:11,185 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:13:11,185 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:13:11,185 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:13:11,185 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:13:11,186 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:13:11,187 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:13:11,188 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:13:11,189 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:13:11,189 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:13:11,189 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:13:11,189 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:13:11,190 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:13:11,190 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:13:11,190 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 07:13:11,190 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 07:13:11,190 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:13:11,191 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:13:11,191 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:13:11,191 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:13:11,191 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:13:11,192 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 07:13:11,192 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:13:11,192 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:13:11,192 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:13:11,193 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:13:11,193 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:13:11,193 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-13 07:13:11,193 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 07:13:11,194 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:13:11,194 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:13:11,195 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:13:11,195 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_92cac3c7-95ed-48d7-b4ff-a127773915d1/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cac3c7-95ed-48d7-b4ff-a127773915d1/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e37ba74c70ee452f780b10cba83059c905066e35 [2021-10-13 07:13:11,610 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:13:11,657 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:13:11,660 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:13:11,662 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:13:11,663 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:13:11,664 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cac3c7-95ed-48d7-b4ff-a127773915d1/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/float-newlib/double_req_bl_1122b.c [2021-10-13 07:13:11,743 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cac3c7-95ed-48d7-b4ff-a127773915d1/bin/utaipan-q2qaUkNPG8/data/6585392e9/90ae64e7a9024673b8f689d565225b9f/FLAG4b1759d0a [2021-10-13 07:13:12,401 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:13:12,401 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cac3c7-95ed-48d7-b4ff-a127773915d1/sv-benchmarks/c/float-newlib/double_req_bl_1122b.c [2021-10-13 07:13:12,412 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cac3c7-95ed-48d7-b4ff-a127773915d1/bin/utaipan-q2qaUkNPG8/data/6585392e9/90ae64e7a9024673b8f689d565225b9f/FLAG4b1759d0a [2021-10-13 07:13:12,739 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cac3c7-95ed-48d7-b4ff-a127773915d1/bin/utaipan-q2qaUkNPG8/data/6585392e9/90ae64e7a9024673b8f689d565225b9f [2021-10-13 07:13:12,741 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:13:12,743 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:13:12,745 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:13:12,745 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:13:12,752 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:13:12,753 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:13:12" (1/1) ... [2021-10-13 07:13:12,754 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c357672 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:13:12, skipping insertion in model container [2021-10-13 07:13:12,754 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:13:12" (1/1) ... [2021-10-13 07:13:12,762 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:13:12,800 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:13:13,013 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_92cac3c7-95ed-48d7-b4ff-a127773915d1/sv-benchmarks/c/float-newlib/double_req_bl_1122b.c[3907,3920] [2021-10-13 07:13:13,016 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:13:13,067 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:13:13,139 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_92cac3c7-95ed-48d7-b4ff-a127773915d1/sv-benchmarks/c/float-newlib/double_req_bl_1122b.c[3907,3920] [2021-10-13 07:13:13,153 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:13:13,172 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:13:13,183 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:13:13 WrapperNode [2021-10-13 07:13:13,183 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:13:13,185 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:13:13,185 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:13:13,186 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:13:13,193 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:13:13" (1/1) ... [2021-10-13 07:13:13,219 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:13:13" (1/1) ... [2021-10-13 07:13:13,268 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:13:13,270 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:13:13,271 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:13:13,271 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:13:13,279 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:13:13" (1/1) ... [2021-10-13 07:13:13,280 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:13:13" (1/1) ... [2021-10-13 07:13:13,298 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:13:13" (1/1) ... [2021-10-13 07:13:13,300 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:13:13" (1/1) ... [2021-10-13 07:13:13,313 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:13:13" (1/1) ... [2021-10-13 07:13:13,319 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:13:13" (1/1) ... [2021-10-13 07:13:13,323 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:13:13" (1/1) ... [2021-10-13 07:13:13,327 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:13:13,328 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:13:13,328 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:13:13,328 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:13:13,341 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:13:13" (1/1) ... [2021-10-13 07:13:13,347 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:13:13,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cac3c7-95ed-48d7-b4ff-a127773915d1/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:13:13,374 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cac3c7-95ed-48d7-b4ff-a127773915d1/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:13:13,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cac3c7-95ed-48d7-b4ff-a127773915d1/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:13:13,432 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2021-10-13 07:13:13,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2021-10-13 07:13:13,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-13 07:13:13,432 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:13:13,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8 [2021-10-13 07:13:13,433 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-13 07:13:13,434 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:13:13,434 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:13:13,435 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-13 07:13:13,435 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 07:13:18,233 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:13:18,234 INFO L299 CfgBuilder]: Removed 22 assume(true) statements. [2021-10-13 07:13:18,236 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:13:18 BoogieIcfgContainer [2021-10-13 07:13:18,236 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:13:18,238 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:13:18,238 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:13:18,241 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:13:18,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:13:12" (1/3) ... [2021-10-13 07:13:18,243 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b0c20d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:13:18, skipping insertion in model container [2021-10-13 07:13:18,243 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:13:13" (2/3) ... [2021-10-13 07:13:18,243 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b0c20d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:13:18, skipping insertion in model container [2021-10-13 07:13:18,243 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:13:18" (3/3) ... [2021-10-13 07:13:18,245 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1122b.c [2021-10-13 07:13:18,251 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:13:18,251 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 07:13:18,300 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:13:18,306 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 07:13:18,306 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 07:13:18,341 INFO L276 IsEmpty]: Start isEmpty. Operand has 55 states, 53 states have (on average 1.8113207547169812) internal successors, (96), 54 states have internal predecessors, (96), 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 07:13:18,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-13 07:13:18,348 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:13:18,348 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:13:18,350 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:13:18,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:13:18,360 INFO L82 PathProgramCache]: Analyzing trace with hash 668833300, now seen corresponding path program 1 times [2021-10-13 07:13:18,375 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:13:18,375 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [505838050] [2021-10-13 07:13:18,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:13:18,377 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:13:18,377 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cac3c7-95ed-48d7-b4ff-a127773915d1/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:13:18,383 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cac3c7-95ed-48d7-b4ff-a127773915d1/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:13:18,400 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cac3c7-95ed-48d7-b4ff-a127773915d1/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 07:13:18,489 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cac3c7-95ed-48d7-b4ff-a127773915d1/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-13 07:13:18,671 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cac3c7-95ed-48d7-b4ff-a127773915d1/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:13:18,672 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 07:13:18,676 INFO L168 Benchmark]: Toolchain (without parser) took 5932.09 ms. Allocated memory was 56.6 MB in the beginning and 73.4 MB in the end (delta: 16.8 MB). Free memory was 34.4 MB in the beginning and 37.3 MB in the end (delta: -2.9 MB). Peak memory consumption was 14.0 MB. Max. memory is 16.1 GB. [2021-10-13 07:13:18,677 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 56.6 MB. Free memory was 37.8 MB in the beginning and 37.7 MB in the end (delta: 44.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:13:18,678 INFO L168 Benchmark]: CACSL2BoogieTranslator took 438.99 ms. Allocated memory was 56.6 MB in the beginning and 73.4 MB in the end (delta: 16.8 MB). Free memory was 34.2 MB in the beginning and 53.6 MB in the end (delta: -19.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-13 07:13:18,678 INFO L168 Benchmark]: Boogie Procedure Inliner took 84.97 ms. Allocated memory is still 73.4 MB. Free memory was 53.4 MB in the beginning and 51.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:13:18,679 INFO L168 Benchmark]: Boogie Preprocessor took 57.29 ms. Allocated memory is still 73.4 MB. Free memory was 51.4 MB in the beginning and 49.3 MB in the end (delta: 2.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:13:18,680 INFO L168 Benchmark]: RCFGBuilder took 4907.97 ms. Allocated memory is still 73.4 MB. Free memory was 49.1 MB in the beginning and 47.2 MB in the end (delta: 1.9 MB). Peak memory consumption was 18.8 MB. Max. memory is 16.1 GB. [2021-10-13 07:13:18,680 INFO L168 Benchmark]: TraceAbstraction took 436.33 ms. Allocated memory is still 73.4 MB. Free memory was 46.7 MB in the beginning and 37.3 MB in the end (delta: 9.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 07:13:18,684 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 56.6 MB. Free memory was 37.8 MB in the beginning and 37.7 MB in the end (delta: 44.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 438.99 ms. Allocated memory was 56.6 MB in the beginning and 73.4 MB in the end (delta: 16.8 MB). Free memory was 34.2 MB in the beginning and 53.6 MB in the end (delta: -19.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 84.97 ms. Allocated memory is still 73.4 MB. Free memory was 53.4 MB in the beginning and 51.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 57.29 ms. Allocated memory is still 73.4 MB. Free memory was 51.4 MB in the beginning and 49.3 MB in the end (delta: 2.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 4907.97 ms. Allocated memory is still 73.4 MB. Free memory was 49.1 MB in the beginning and 47.2 MB in the end (delta: 1.9 MB). Peak memory consumption was 18.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 436.33 ms. Allocated memory is still 73.4 MB. Free memory was 46.7 MB in the beginning and 37.3 MB in the end (delta: 9.4 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 07:13:18,814 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92cac3c7-95ed-48d7-b4ff-a127773915d1/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...