./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1131b.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_e6339e87-4eff-4565-984a-65b9a9474f96/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6339e87-4eff-4565-984a-65b9a9474f96/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_e6339e87-4eff-4565-984a-65b9a9474f96/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6339e87-4eff-4565-984a-65b9a9474f96/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1131b.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6339e87-4eff-4565-984a-65b9a9474f96/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_e6339e87-4eff-4565-984a-65b9a9474f96/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 4975ced40ee4a8ea85abb8c123fa258e6c012e9d ................................................................................................................................................................................................................................................................................................................................... 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_e6339e87-4eff-4565-984a-65b9a9474f96/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6339e87-4eff-4565-984a-65b9a9474f96/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_e6339e87-4eff-4565-984a-65b9a9474f96/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6339e87-4eff-4565-984a-65b9a9474f96/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1131b.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6339e87-4eff-4565-984a-65b9a9474f96/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_e6339e87-4eff-4565-984a-65b9a9474f96/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 4975ced40ee4a8ea85abb8c123fa258e6c012e9d ...................................................................................................................................................................................................................................................................... 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 02:53:12,109 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:53:12,112 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:53:12,164 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:53:12,165 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:53:12,170 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:53:12,171 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:53:12,175 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:53:12,178 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:53:12,184 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:53:12,185 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:53:12,187 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:53:12,187 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:53:12,189 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:53:12,191 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:53:12,196 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:53:12,197 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:53:12,199 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:53:12,201 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:53:12,208 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:53:12,210 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:53:12,212 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:53:12,213 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:53:12,214 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:53:12,217 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:53:12,217 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:53:12,218 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:53:12,219 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:53:12,220 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:53:12,221 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:53:12,221 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:53:12,222 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:53:12,223 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:53:12,224 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:53:12,225 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:53:12,225 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:53:12,226 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:53:12,226 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:53:12,226 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:53:12,227 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:53:12,228 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:53:12,229 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6339e87-4eff-4565-984a-65b9a9474f96/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-16 02:53:12,251 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:53:12,251 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:53:12,252 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:53:12,252 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:53:12,253 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:53:12,253 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:53:12,253 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-16 02:53:12,253 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:53:12,254 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:53:12,254 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-16 02:53:12,254 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-16 02:53:12,254 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:53:12,255 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-16 02:53:12,255 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-16 02:53:12,255 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-16 02:53:12,256 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:53:12,256 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:53:12,257 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 02:53:12,257 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:53:12,257 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:53:12,257 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 02:53:12,258 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:53:12,258 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 02:53:12,258 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:53:12,258 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:53:12,259 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 02:53:12,259 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:53:12,259 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 02:53:12,259 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:53:12,260 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:53:12,260 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:53:12,260 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:53:12,260 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:53:12,261 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 02:53:12,261 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-16 02:53:12,261 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-16 02:53:12,261 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 02:53:12,262 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:53:12,262 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:53:12,262 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_e6339e87-4eff-4565-984a-65b9a9474f96/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6339e87-4eff-4565-984a-65b9a9474f96/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4975ced40ee4a8ea85abb8c123fa258e6c012e9d [2021-10-16 02:53:12,582 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:53:12,617 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:53:12,620 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:53:12,621 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:53:12,623 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:53:12,623 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6339e87-4eff-4565-984a-65b9a9474f96/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/float-newlib/double_req_bl_1131b.c [2021-10-16 02:53:12,713 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6339e87-4eff-4565-984a-65b9a9474f96/bin/utaipan-mTDlp9Zugs/data/209a11d31/8a9def8b19f34161bde3137d8318b37f/FLAGafcbe7acc [2021-10-16 02:53:13,225 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:53:13,226 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6339e87-4eff-4565-984a-65b9a9474f96/sv-benchmarks/c/float-newlib/double_req_bl_1131b.c [2021-10-16 02:53:13,233 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6339e87-4eff-4565-984a-65b9a9474f96/bin/utaipan-mTDlp9Zugs/data/209a11d31/8a9def8b19f34161bde3137d8318b37f/FLAGafcbe7acc [2021-10-16 02:53:13,598 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6339e87-4eff-4565-984a-65b9a9474f96/bin/utaipan-mTDlp9Zugs/data/209a11d31/8a9def8b19f34161bde3137d8318b37f [2021-10-16 02:53:13,601 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:53:13,603 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:53:13,607 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:53:13,607 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:53:13,610 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:53:13,611 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:53:13" (1/1) ... [2021-10-16 02:53:13,612 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@209baa53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:53:13, skipping insertion in model container [2021-10-16 02:53:13,613 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:53:13" (1/1) ... [2021-10-16 02:53:13,620 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:53:13,658 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:53:13,913 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_e6339e87-4eff-4565-984a-65b9a9474f96/sv-benchmarks/c/float-newlib/double_req_bl_1131b.c[4119,4132] [2021-10-16 02:53:13,916 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:53:13,923 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 02:53:13,974 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_e6339e87-4eff-4565-984a-65b9a9474f96/sv-benchmarks/c/float-newlib/double_req_bl_1131b.c[4119,4132] [2021-10-16 02:53:13,974 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:53:13,989 INFO L208 MainTranslator]: Completed translation [2021-10-16 02:53:13,989 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:53:13 WrapperNode [2021-10-16 02:53:13,989 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:53:13,991 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 02:53:13,991 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 02:53:13,991 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 02:53:14,002 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:53:13" (1/1) ... [2021-10-16 02:53:14,020 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:53:13" (1/1) ... [2021-10-16 02:53:14,074 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:53:14,078 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:53:14,079 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:53:14,079 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:53:14,088 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:53:13" (1/1) ... [2021-10-16 02:53:14,089 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:53:13" (1/1) ... [2021-10-16 02:53:14,109 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:53:13" (1/1) ... [2021-10-16 02:53:14,114 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:53:13" (1/1) ... [2021-10-16 02:53:14,126 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:53:13" (1/1) ... [2021-10-16 02:53:14,154 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:53:13" (1/1) ... [2021-10-16 02:53:14,156 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:53:13" (1/1) ... [2021-10-16 02:53:14,160 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:53:14,161 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:53:14,162 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:53:14,162 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:53:14,163 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:53:13" (1/1) ... [2021-10-16 02:53:14,172 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:53:14,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6339e87-4eff-4565-984a-65b9a9474f96/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:53:14,221 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6339e87-4eff-4565-984a-65b9a9474f96/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:53:14,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6339e87-4eff-4565-984a-65b9a9474f96/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:53:14,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-16 02:53:14,266 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 02:53:14,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-16 02:53:14,267 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-10-16 02:53:14,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-10-16 02:53:14,268 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:53:14,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:53:14,268 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-16 02:53:14,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2021-10-16 02:53:14,268 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-16 02:53:15,033 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:53:15,033 INFO L299 CfgBuilder]: Removed 24 assume(true) statements. [2021-10-16 02:53:15,035 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:53:15 BoogieIcfgContainer [2021-10-16 02:53:15,036 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:53:15,038 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:53:15,038 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:53:15,041 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:53:15,041 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:53:13" (1/3) ... [2021-10-16 02:53:15,042 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12d7c7e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:53:15, skipping insertion in model container [2021-10-16 02:53:15,042 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:53:13" (2/3) ... [2021-10-16 02:53:15,043 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12d7c7e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:53:15, skipping insertion in model container [2021-10-16 02:53:15,043 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:53:15" (3/3) ... [2021-10-16 02:53:15,045 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1131b.c [2021-10-16 02:53:15,050 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:53:15,050 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-16 02:53:15,097 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:53:15,104 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 02:53:15,104 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-16 02:53:15,121 INFO L276 IsEmpty]: Start isEmpty. Operand has 44 states, 42 states have (on average 1.7619047619047619) internal successors, (74), 43 states have internal predecessors, (74), 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 02:53:15,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-16 02:53:15,135 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:53:15,135 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:53:15,136 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:53:15,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:53:15,142 INFO L82 PathProgramCache]: Analyzing trace with hash -1060182767, now seen corresponding path program 1 times [2021-10-16 02:53:15,153 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:53:15,153 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416587951] [2021-10-16 02:53:15,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:53:15,155 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:53:15,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:53:15,346 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 02:53:15,346 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:53:15,347 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416587951] [2021-10-16 02:53:15,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416587951] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:53:15,348 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:53:15,348 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-16 02:53:15,353 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46049007] [2021-10-16 02:53:15,357 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-16 02:53:15,358 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:53:15,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-16 02:53:15,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 02:53:15,377 INFO L87 Difference]: Start difference. First operand has 44 states, 42 states have (on average 1.7619047619047619) internal successors, (74), 43 states have internal predecessors, (74), 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 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:53:15,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:53:15,404 INFO L93 Difference]: Finished difference Result 87 states and 147 transitions. [2021-10-16 02:53:15,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-16 02:53:15,405 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-16 02:53:15,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:53:15,415 INFO L225 Difference]: With dead ends: 87 [2021-10-16 02:53:15,416 INFO L226 Difference]: Without dead ends: 41 [2021-10-16 02:53:15,419 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 02:53:15,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-10-16 02:53:15,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2021-10-16 02:53:15,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.45) internal successors, (58), 40 states have internal predecessors, (58), 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 02:53:15,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 58 transitions. [2021-10-16 02:53:15,463 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 58 transitions. Word has length 11 [2021-10-16 02:53:15,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:53:15,464 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 58 transitions. [2021-10-16 02:53:15,465 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:53:15,466 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 58 transitions. [2021-10-16 02:53:15,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-16 02:53:15,468 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:53:15,468 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:53:15,468 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-16 02:53:15,469 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:53:15,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:53:15,472 INFO L82 PathProgramCache]: Analyzing trace with hash -98278491, now seen corresponding path program 1 times [2021-10-16 02:53:15,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:53:15,473 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493982544] [2021-10-16 02:53:15,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:53:15,473 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:53:15,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-16 02:53:15,642 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-16 02:53:15,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-16 02:53:15,814 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-16 02:53:15,815 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-16 02:53:15,817 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:53:15,818 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-16 02:53:15,824 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 02:53:15,851 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 02:53:15 BoogieIcfgContainer [2021-10-16 02:53:15,851 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 02:53:15,852 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 02:53:15,852 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 02:53:15,852 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 02:53:15,853 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:53:15" (3/4) ... [2021-10-16 02:53:15,856 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-16 02:53:15,856 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 02:53:15,858 INFO L168 Benchmark]: Toolchain (without parser) took 2254.32 ms. Allocated memory is still 159.4 MB. Free memory was 125.8 MB in the beginning and 130.8 MB in the end (delta: -5.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:53:15,858 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 90.2 MB. Free memory is still 47.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:53:15,859 INFO L168 Benchmark]: CACSL2BoogieTranslator took 382.86 ms. Allocated memory is still 159.4 MB. Free memory was 125.4 MB in the beginning and 129.5 MB in the end (delta: -4.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-16 02:53:15,860 INFO L168 Benchmark]: Boogie Procedure Inliner took 87.21 ms. Allocated memory is still 159.4 MB. Free memory was 129.5 MB in the beginning and 127.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:53:15,861 INFO L168 Benchmark]: Boogie Preprocessor took 82.23 ms. Allocated memory is still 159.4 MB. Free memory was 127.1 MB in the beginning and 124.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:53:15,861 INFO L168 Benchmark]: RCFGBuilder took 874.52 ms. Allocated memory is still 159.4 MB. Free memory was 124.9 MB in the beginning and 96.5 MB in the end (delta: 28.4 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.1 GB. [2021-10-16 02:53:15,862 INFO L168 Benchmark]: TraceAbstraction took 813.88 ms. Allocated memory is still 159.4 MB. Free memory was 96.1 MB in the beginning and 130.8 MB in the end (delta: -34.7 MB). Peak memory consumption was 36.4 MB. Max. memory is 16.1 GB. [2021-10-16 02:53:15,862 INFO L168 Benchmark]: Witness Printer took 4.15 ms. Allocated memory is still 159.4 MB. Free memory is still 130.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:53:15,866 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 90.2 MB. Free memory is still 47.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 382.86 ms. Allocated memory is still 159.4 MB. Free memory was 125.4 MB in the beginning and 129.5 MB in the end (delta: -4.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 87.21 ms. Allocated memory is still 159.4 MB. Free memory was 129.5 MB in the beginning and 127.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 82.23 ms. Allocated memory is still 159.4 MB. Free memory was 127.1 MB in the beginning and 124.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 874.52 ms. Allocated memory is still 159.4 MB. Free memory was 124.9 MB in the beginning and 96.5 MB in the end (delta: 28.4 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 813.88 ms. Allocated memory is still 159.4 MB. Free memory was 96.1 MB in the beginning and 130.8 MB in the end (delta: -34.7 MB). Peak memory consumption was 36.4 MB. Max. memory is 16.1 GB. * Witness Printer took 4.15 ms. Allocated memory is still 159.4 MB. Free memory is still 130.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 188]: 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 43, overapproximation of someUnaryDOUBLEoperation at line 19, overapproximation of someBinaryArithmeticDOUBLEoperation at line 44, overapproximation of bitwiseAnd at line 38, overapproximation of someBinaryDOUBLEComparisonOperation at line 187, overapproximation of bitwiseXor at line 39. Possible FailurePath: [L17-L20] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L179] double y = -1.0 / 0.0; [L180] double x = __VERIFIER_nondet_double(); [L163] __int32_t hx; VAL [one_fmod=1, Zero_fmod={5:0}] [L165] ieee_double_shape_type gh_u; [L166] gh_u.value = (x) [L167] EXPR gh_u.parts.msw [L167] (hx) = gh_u.parts.msw [L169] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); [L182] COND TRUE isfinite_double(x) [L23] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L24] __uint32_t lx, ly, lz; VAL [one_fmod=1, Zero_fmod={5:0}] [L27] ieee_double_shape_type ew_u; [L28] ew_u.value = (x) [L29] EXPR ew_u.parts.msw [L29] (hx) = ew_u.parts.msw [L30] EXPR ew_u.parts.lsw [L30] (lx) = ew_u.parts.lsw [L33] ieee_double_shape_type ew_u; [L34] ew_u.value = (y) [L35] EXPR ew_u.parts.msw [L35] (hy) = ew_u.parts.msw [L36] EXPR ew_u.parts.lsw [L36] (ly) = ew_u.parts.lsw [L38] sx = hx & 0x80000000 [L39] hx ^= sx [L40] hy &= 0x7fffffff VAL [one_fmod=1, Zero_fmod={5:0}] [L42-L43] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L44] return (x * y) / (x * y); VAL [one_fmod=1, Zero_fmod={5:0}] [L184] double res = fmod_double(x, y); [L187] COND TRUE res != x VAL [one_fmod=1, Zero_fmod={5:0}] [L188] reach_error() VAL [one_fmod=1, Zero_fmod={5:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 44 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 726.9ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 19.8ms, AutomataDifference: 60.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 12.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 62 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=44occurred 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: 30.6ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 18.6ms SsaConstructionTime, 185.6ms SatisfiabilityAnalysisTime, 68.2ms InterpolantComputationTime, 25 NumberOfCodeBlocks, 25 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 10 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 02:53:15,914 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6339e87-4eff-4565-984a-65b9a9474f96/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-5709675 [2021-10-16 02:53:18,339 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:53:18,341 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:53:18,373 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:53:18,374 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:53:18,375 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:53:18,377 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:53:18,380 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:53:18,382 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:53:18,384 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:53:18,385 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:53:18,386 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:53:18,387 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:53:18,388 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:53:18,390 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:53:18,391 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:53:18,392 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:53:18,393 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:53:18,396 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:53:18,398 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:53:18,400 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:53:18,406 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:53:18,408 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:53:18,411 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:53:18,424 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:53:18,426 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:53:18,426 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:53:18,430 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:53:18,432 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:53:18,434 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:53:18,434 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:53:18,435 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:53:18,437 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:53:18,438 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:53:18,440 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:53:18,440 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:53:18,441 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:53:18,441 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:53:18,441 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:53:18,444 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:53:18,444 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:53:18,445 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6339e87-4eff-4565-984a-65b9a9474f96/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-16 02:53:18,477 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:53:18,478 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:53:18,479 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:53:18,479 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:53:18,479 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:53:18,480 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:53:18,480 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:53:18,480 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:53:18,481 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:53:18,482 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:53:18,484 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:53:18,484 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:53:18,484 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:53:18,484 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 02:53:18,485 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:53:18,485 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 02:53:18,485 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:53:18,485 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-16 02:53:18,485 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-16 02:53:18,486 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:53:18,486 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 02:53:18,486 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:53:18,486 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 02:53:18,487 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:53:18,487 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-16 02:53:18,487 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:53:18,487 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:53:18,488 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:53:18,488 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:53:18,488 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 02:53:18,489 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-16 02:53:18,489 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-16 02:53:18,489 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 02:53:18,489 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:53:18,490 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:53:18,490 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_e6339e87-4eff-4565-984a-65b9a9474f96/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6339e87-4eff-4565-984a-65b9a9474f96/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4975ced40ee4a8ea85abb8c123fa258e6c012e9d [2021-10-16 02:53:18,886 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:53:18,908 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:53:18,910 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:53:18,912 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:53:18,912 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:53:18,913 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6339e87-4eff-4565-984a-65b9a9474f96/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/float-newlib/double_req_bl_1131b.c [2021-10-16 02:53:19,000 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6339e87-4eff-4565-984a-65b9a9474f96/bin/utaipan-mTDlp9Zugs/data/1c8163210/61af9c6e95cb43ecbcbcf61081000771/FLAG2c10cb399 [2021-10-16 02:53:19,614 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:53:19,616 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6339e87-4eff-4565-984a-65b9a9474f96/sv-benchmarks/c/float-newlib/double_req_bl_1131b.c [2021-10-16 02:53:19,627 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6339e87-4eff-4565-984a-65b9a9474f96/bin/utaipan-mTDlp9Zugs/data/1c8163210/61af9c6e95cb43ecbcbcf61081000771/FLAG2c10cb399 [2021-10-16 02:53:19,887 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6339e87-4eff-4565-984a-65b9a9474f96/bin/utaipan-mTDlp9Zugs/data/1c8163210/61af9c6e95cb43ecbcbcf61081000771 [2021-10-16 02:53:19,889 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:53:19,891 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:53:19,892 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:53:19,904 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:53:19,908 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:53:19,909 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:53:19" (1/1) ... [2021-10-16 02:53:19,911 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35d39486 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:53:19, skipping insertion in model container [2021-10-16 02:53:19,912 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:53:19" (1/1) ... [2021-10-16 02:53:19,919 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:53:19,950 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:53:20,128 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_e6339e87-4eff-4565-984a-65b9a9474f96/sv-benchmarks/c/float-newlib/double_req_bl_1131b.c[4119,4132] [2021-10-16 02:53:20,131 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:53:20,144 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 02:53:20,205 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_e6339e87-4eff-4565-984a-65b9a9474f96/sv-benchmarks/c/float-newlib/double_req_bl_1131b.c[4119,4132] [2021-10-16 02:53:20,206 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:53:20,244 INFO L208 MainTranslator]: Completed translation [2021-10-16 02:53:20,245 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:53:20 WrapperNode [2021-10-16 02:53:20,245 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:53:20,246 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 02:53:20,246 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 02:53:20,246 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 02:53:20,251 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:53:20" (1/1) ... [2021-10-16 02:53:20,264 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:53:20" (1/1) ... [2021-10-16 02:53:20,306 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:53:20,312 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:53:20,313 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:53:20,313 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:53:20,321 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:53:20" (1/1) ... [2021-10-16 02:53:20,322 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:53:20" (1/1) ... [2021-10-16 02:53:20,345 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:53:20" (1/1) ... [2021-10-16 02:53:20,347 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:53:20" (1/1) ... [2021-10-16 02:53:20,390 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:53:20" (1/1) ... [2021-10-16 02:53:20,407 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:53:20" (1/1) ... [2021-10-16 02:53:20,410 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:53:20" (1/1) ... [2021-10-16 02:53:20,415 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:53:20,416 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:53:20,416 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:53:20,416 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:53:20,417 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:53:20" (1/1) ... [2021-10-16 02:53:20,424 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:53:20,436 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6339e87-4eff-4565-984a-65b9a9474f96/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:53:20,460 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6339e87-4eff-4565-984a-65b9a9474f96/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:53:20,473 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6339e87-4eff-4565-984a-65b9a9474f96/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:53:20,522 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2021-10-16 02:53:20,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2021-10-16 02:53:20,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-16 02:53:20,523 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 02:53:20,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8 [2021-10-16 02:53:20,524 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-16 02:53:20,526 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:53:20,526 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:53:20,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-16 02:53:20,527 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-16 02:53:25,708 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:53:25,709 INFO L299 CfgBuilder]: Removed 24 assume(true) statements. [2021-10-16 02:53:25,711 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:53:25 BoogieIcfgContainer [2021-10-16 02:53:25,712 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:53:25,714 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:53:25,714 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:53:25,731 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:53:25,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:53:19" (1/3) ... [2021-10-16 02:53:25,732 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46720e80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:53:25, skipping insertion in model container [2021-10-16 02:53:25,733 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:53:20" (2/3) ... [2021-10-16 02:53:25,733 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46720e80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:53:25, skipping insertion in model container [2021-10-16 02:53:25,733 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:53:25" (3/3) ... [2021-10-16 02:53:25,735 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1131b.c [2021-10-16 02:53:25,740 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:53:25,740 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-16 02:53:25,787 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:53:25,793 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 02:53:25,793 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-16 02:53:25,810 INFO L276 IsEmpty]: Start isEmpty. Operand has 60 states, 58 states have (on average 1.793103448275862) internal successors, (104), 59 states have internal predecessors, (104), 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 02:53:25,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-16 02:53:25,816 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:53:25,817 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:53:25,818 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:53:25,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:53:25,824 INFO L82 PathProgramCache]: Analyzing trace with hash 2036387893, now seen corresponding path program 1 times [2021-10-16 02:53:25,837 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:53:25,838 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1332672081] [2021-10-16 02:53:25,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:53:25,839 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:53:25,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6339e87-4eff-4565-984a-65b9a9474f96/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:53:25,845 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6339e87-4eff-4565-984a-65b9a9474f96/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:53:25,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6339e87-4eff-4565-984a-65b9a9474f96/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-16 02:53:25,967 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6339e87-4eff-4565-984a-65b9a9474f96/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-16 02:53:26,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6339e87-4eff-4565-984a-65b9a9474f96/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:53:26,171 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 02:53:26,175 INFO L168 Benchmark]: Toolchain (without parser) took 6283.07 ms. Allocated memory was 69.2 MB in the beginning and 107.0 MB in the end (delta: 37.7 MB). Free memory was 51.4 MB in the beginning and 79.4 MB in the end (delta: -28.0 MB). Peak memory consumption was 12.4 MB. Max. memory is 16.1 GB. [2021-10-16 02:53:26,176 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 69.2 MB. Free memory is still 51.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:53:26,176 INFO L168 Benchmark]: CACSL2BoogieTranslator took 352.83 ms. Allocated memory is still 69.2 MB. Free memory was 51.2 MB in the beginning and 37.4 MB in the end (delta: 13.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-16 02:53:26,177 INFO L168 Benchmark]: Boogie Procedure Inliner took 65.70 ms. Allocated memory is still 69.2 MB. Free memory was 37.4 MB in the beginning and 35.1 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:53:26,178 INFO L168 Benchmark]: Boogie Preprocessor took 102.60 ms. Allocated memory is still 69.2 MB. Free memory was 35.1 MB in the beginning and 52.1 MB in the end (delta: -17.0 MB). Peak memory consumption was 5.9 MB. Max. memory is 16.1 GB. [2021-10-16 02:53:26,178 INFO L168 Benchmark]: RCFGBuilder took 5296.07 ms. Allocated memory is still 69.2 MB. Free memory was 52.1 MB in the beginning and 33.0 MB in the end (delta: 19.1 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2021-10-16 02:53:26,179 INFO L168 Benchmark]: TraceAbstraction took 459.32 ms. Allocated memory was 69.2 MB in the beginning and 107.0 MB in the end (delta: 37.7 MB). Free memory was 32.6 MB in the beginning and 79.4 MB in the end (delta: -46.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:53:26,182 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 69.2 MB. Free memory is still 51.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 352.83 ms. Allocated memory is still 69.2 MB. Free memory was 51.2 MB in the beginning and 37.4 MB in the end (delta: 13.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 65.70 ms. Allocated memory is still 69.2 MB. Free memory was 37.4 MB in the beginning and 35.1 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 102.60 ms. Allocated memory is still 69.2 MB. Free memory was 35.1 MB in the beginning and 52.1 MB in the end (delta: -17.0 MB). Peak memory consumption was 5.9 MB. Max. memory is 16.1 GB. * RCFGBuilder took 5296.07 ms. Allocated memory is still 69.2 MB. Free memory was 52.1 MB in the beginning and 33.0 MB in the end (delta: 19.1 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 459.32 ms. Allocated memory was 69.2 MB in the beginning and 107.0 MB in the end (delta: 37.7 MB). Free memory was 32.6 MB in the beginning and 79.4 MB in the end (delta: -46.8 MB). There was no memory consumed. 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 02:53:26,311 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6339e87-4eff-4565-984a-65b9a9474f96/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...