./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1121a.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_a9fbdcef-f1ed-442e-98fd-67e1f9423fe5/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9fbdcef-f1ed-442e-98fd-67e1f9423fe5/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_a9fbdcef-f1ed-442e-98fd-67e1f9423fe5/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9fbdcef-f1ed-442e-98fd-67e1f9423fe5/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1121a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9fbdcef-f1ed-442e-98fd-67e1f9423fe5/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_a9fbdcef-f1ed-442e-98fd-67e1f9423fe5/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 b1ef2080ffd97f82ac51854e7d9813eba864fd0a ........................................................................................................................................................................................................................................................................................................................... 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_a9fbdcef-f1ed-442e-98fd-67e1f9423fe5/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9fbdcef-f1ed-442e-98fd-67e1f9423fe5/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_a9fbdcef-f1ed-442e-98fd-67e1f9423fe5/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9fbdcef-f1ed-442e-98fd-67e1f9423fe5/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1121a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9fbdcef-f1ed-442e-98fd-67e1f9423fe5/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_a9fbdcef-f1ed-442e-98fd-67e1f9423fe5/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 b1ef2080ffd97f82ac51854e7d9813eba864fd0a ...................................................................................................................................................................................................................................................................... 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 02:26:57,251 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:26:57,254 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:26:57,293 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:26:57,294 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:26:57,296 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:26:57,298 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:26:57,302 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:26:57,305 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:26:57,306 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:26:57,308 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:26:57,310 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:26:57,311 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:26:57,313 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:26:57,316 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:26:57,318 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:26:57,319 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:26:57,321 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:26:57,324 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:26:57,328 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:26:57,331 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:26:57,336 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:26:57,348 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:26:57,350 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:26:57,354 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:26:57,359 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:26:57,360 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:26:57,362 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:26:57,362 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:26:57,364 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:26:57,367 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:26:57,369 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:26:57,371 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:26:57,373 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:26:57,375 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:26:57,376 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:26:57,377 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:26:57,378 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:26:57,378 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:26:57,379 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:26:57,381 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:26:57,382 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9fbdcef-f1ed-442e-98fd-67e1f9423fe5/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-16 02:26:57,460 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:26:57,460 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:26:57,461 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:26:57,461 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:26:57,462 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:26:57,462 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:26:57,462 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-16 02:26:57,462 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:26:57,463 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:26:57,463 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-16 02:26:57,463 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-16 02:26:57,463 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:26:57,464 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-16 02:26:57,464 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-16 02:26:57,464 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-16 02:26:57,465 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:26:57,466 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:26:57,466 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 02:26:57,466 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:26:57,466 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:26:57,467 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 02:26:57,467 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:26:57,467 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 02:26:57,467 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:26:57,468 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:26:57,468 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 02:26:57,468 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:26:57,468 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 02:26:57,469 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:26:57,469 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:26:57,469 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:26:57,469 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:26:57,470 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:26:57,475 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 02:26:57,475 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-16 02:26:57,476 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-16 02:26:57,477 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 02:26:57,477 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:26:57,478 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:26:57,478 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_a9fbdcef-f1ed-442e-98fd-67e1f9423fe5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9fbdcef-f1ed-442e-98fd-67e1f9423fe5/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b1ef2080ffd97f82ac51854e7d9813eba864fd0a [2021-10-16 02:26:57,870 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:26:57,909 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:26:57,912 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:26:57,914 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:26:57,916 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:26:57,917 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9fbdcef-f1ed-442e-98fd-67e1f9423fe5/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/float-newlib/double_req_bl_1121a.c [2021-10-16 02:26:58,037 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9fbdcef-f1ed-442e-98fd-67e1f9423fe5/bin/utaipan-mTDlp9Zugs/data/5d0f2fe29/ad53941de50f408a87ceff434c991f2b/FLAGb65ead76d [2021-10-16 02:26:58,684 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:26:58,684 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9fbdcef-f1ed-442e-98fd-67e1f9423fe5/sv-benchmarks/c/float-newlib/double_req_bl_1121a.c [2021-10-16 02:26:58,694 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9fbdcef-f1ed-442e-98fd-67e1f9423fe5/bin/utaipan-mTDlp9Zugs/data/5d0f2fe29/ad53941de50f408a87ceff434c991f2b/FLAGb65ead76d [2021-10-16 02:26:59,040 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9fbdcef-f1ed-442e-98fd-67e1f9423fe5/bin/utaipan-mTDlp9Zugs/data/5d0f2fe29/ad53941de50f408a87ceff434c991f2b [2021-10-16 02:26:59,044 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:26:59,048 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:26:59,050 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:26:59,050 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:26:59,054 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:26:59,056 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:26:59" (1/1) ... [2021-10-16 02:26:59,058 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6314e6aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:26:59, skipping insertion in model container [2021-10-16 02:26:59,058 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:26:59" (1/1) ... [2021-10-16 02:26:59,067 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:26:59,113 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:26:59,378 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_a9fbdcef-f1ed-442e-98fd-67e1f9423fe5/sv-benchmarks/c/float-newlib/double_req_bl_1121a.c[3883,3896] [2021-10-16 02:26:59,381 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:26:59,391 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 02:26:59,454 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_a9fbdcef-f1ed-442e-98fd-67e1f9423fe5/sv-benchmarks/c/float-newlib/double_req_bl_1121a.c[3883,3896] [2021-10-16 02:26:59,455 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:26:59,474 INFO L208 MainTranslator]: Completed translation [2021-10-16 02:26:59,475 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:26:59 WrapperNode [2021-10-16 02:26:59,475 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:26:59,477 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 02:26:59,477 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 02:26:59,477 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 02:26:59,488 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:26:59" (1/1) ... [2021-10-16 02:26:59,502 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:26:59" (1/1) ... [2021-10-16 02:26:59,547 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:26:59,548 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:26:59,549 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:26:59,549 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:26:59,560 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:26:59" (1/1) ... [2021-10-16 02:26:59,560 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:26:59" (1/1) ... [2021-10-16 02:26:59,566 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:26:59" (1/1) ... [2021-10-16 02:26:59,566 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:26:59" (1/1) ... [2021-10-16 02:26:59,581 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:26:59" (1/1) ... [2021-10-16 02:26:59,589 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:26:59" (1/1) ... [2021-10-16 02:26:59,593 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:26:59" (1/1) ... [2021-10-16 02:26:59,598 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:26:59,599 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:26:59,600 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:26:59,600 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:26:59,619 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:26:59" (1/1) ... [2021-10-16 02:26:59,629 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:26:59,652 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9fbdcef-f1ed-442e-98fd-67e1f9423fe5/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:26:59,683 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9fbdcef-f1ed-442e-98fd-67e1f9423fe5/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:26:59,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9fbdcef-f1ed-442e-98fd-67e1f9423fe5/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:26:59,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-16 02:26:59,747 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 02:26:59,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-16 02:26:59,749 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-10-16 02:26:59,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-10-16 02:26:59,750 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:26:59,750 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:26:59,750 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-16 02:26:59,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2021-10-16 02:26:59,751 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-16 02:27:00,774 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:27:00,774 INFO L299 CfgBuilder]: Removed 22 assume(true) statements. [2021-10-16 02:27:00,777 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:27:00 BoogieIcfgContainer [2021-10-16 02:27:00,777 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:27:00,780 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:27:00,780 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:27:00,798 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:27:00,798 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:26:59" (1/3) ... [2021-10-16 02:27:00,799 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12a54a0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:27:00, skipping insertion in model container [2021-10-16 02:27:00,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:26:59" (2/3) ... [2021-10-16 02:27:00,800 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12a54a0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:27:00, skipping insertion in model container [2021-10-16 02:27:00,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:27:00" (3/3) ... [2021-10-16 02:27:00,802 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1121a.c [2021-10-16 02:27:00,809 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:27:00,810 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-16 02:27:00,889 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:27:00,904 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 02:27:00,905 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-16 02:27:00,934 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) [2021-10-16 02:27:00,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-16 02:27:00,953 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:27:00,954 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:27:00,955 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:27:00,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:27:00,962 INFO L82 PathProgramCache]: Analyzing trace with hash -159335407, now seen corresponding path program 1 times [2021-10-16 02:27:00,986 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:27:00,988 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853821194] [2021-10-16 02:27:00,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:27:00,990 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:27:01,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:27:01,197 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 02:27:01,198 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:27:01,199 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853821194] [2021-10-16 02:27:01,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853821194] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:27:01,200 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:27:01,200 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-16 02:27:01,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172072107] [2021-10-16 02:27:01,211 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-16 02:27:01,211 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:27:01,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-16 02:27:01,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 02:27:01,239 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) [2021-10-16 02:27:01,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:27:01,273 INFO L93 Difference]: Finished difference Result 77 states and 131 transitions. [2021-10-16 02:27:01,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-16 02:27:01,275 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-16 02:27:01,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:27:01,288 INFO L225 Difference]: With dead ends: 77 [2021-10-16 02:27:01,288 INFO L226 Difference]: Without dead ends: 37 [2021-10-16 02:27:01,293 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 02:27:01,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-10-16 02:27:01,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2021-10-16 02:27:01,341 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) [2021-10-16 02:27:01,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 54 transitions. [2021-10-16 02:27:01,346 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 54 transitions. Word has length 8 [2021-10-16 02:27:01,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:27:01,346 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 54 transitions. [2021-10-16 02:27:01,347 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:27:01,347 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 54 transitions. [2021-10-16 02:27:01,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-16 02:27:01,348 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:27:01,349 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:27:01,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-16 02:27:01,352 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:27:01,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:27:01,360 INFO L82 PathProgramCache]: Analyzing trace with hash -1510972428, now seen corresponding path program 1 times [2021-10-16 02:27:01,360 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:27:01,361 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614185578] [2021-10-16 02:27:01,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:27:01,362 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:27:01,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-16 02:27:01,456 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-16 02:27:01,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-16 02:27:01,598 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-16 02:27:01,598 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-16 02:27:01,600 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:27:01,602 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-16 02:27:01,609 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 02:27:01,639 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 02:27:01 BoogieIcfgContainer [2021-10-16 02:27:01,640 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 02:27:01,641 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 02:27:01,641 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 02:27:01,641 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 02:27:01,642 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:27:00" (3/4) ... [2021-10-16 02:27:01,646 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-16 02:27:01,646 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 02:27:01,649 INFO L168 Benchmark]: Toolchain (without parser) took 2599.68 ms. Allocated memory was 88.1 MB in the beginning and 111.1 MB in the end (delta: 23.1 MB). Free memory was 51.0 MB in the beginning and 80.7 MB in the end (delta: -29.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:27:01,649 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 88.1 MB. Free memory is still 67.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:27:01,651 INFO L168 Benchmark]: CACSL2BoogieTranslator took 426.06 ms. Allocated memory was 88.1 MB in the beginning and 111.1 MB in the end (delta: 23.1 MB). Free memory was 50.9 MB in the beginning and 84.6 MB in the end (delta: -33.7 MB). Peak memory consumption was 9.9 MB. Max. memory is 16.1 GB. [2021-10-16 02:27:01,652 INFO L168 Benchmark]: Boogie Procedure Inliner took 70.90 ms. Allocated memory is still 111.1 MB. Free memory was 84.6 MB in the beginning and 82.0 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:27:01,652 INFO L168 Benchmark]: Boogie Preprocessor took 50.10 ms. Allocated memory is still 111.1 MB. Free memory was 82.0 MB in the beginning and 80.2 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:27:01,653 INFO L168 Benchmark]: RCFGBuilder took 1178.29 ms. Allocated memory is still 111.1 MB. Free memory was 80.2 MB in the beginning and 79.5 MB in the end (delta: 714.5 kB). Peak memory consumption was 23.9 MB. Max. memory is 16.1 GB. [2021-10-16 02:27:01,654 INFO L168 Benchmark]: TraceAbstraction took 860.27 ms. Allocated memory is still 111.1 MB. Free memory was 79.1 MB in the beginning and 80.7 MB in the end (delta: -1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:27:01,655 INFO L168 Benchmark]: Witness Printer took 5.68 ms. Allocated memory is still 111.1 MB. Free memory is still 80.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:27:01,659 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 88.1 MB. Free memory is still 67.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 426.06 ms. Allocated memory was 88.1 MB in the beginning and 111.1 MB in the end (delta: 23.1 MB). Free memory was 50.9 MB in the beginning and 84.6 MB in the end (delta: -33.7 MB). Peak memory consumption was 9.9 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 70.90 ms. Allocated memory is still 111.1 MB. Free memory was 84.6 MB in the beginning and 82.0 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 50.10 ms. Allocated memory is still 111.1 MB. Free memory was 82.0 MB in the beginning and 80.2 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1178.29 ms. Allocated memory is still 111.1 MB. Free memory was 80.2 MB in the beginning and 79.5 MB in the end (delta: 714.5 kB). Peak memory consumption was 23.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 860.27 ms. Allocated memory is still 111.1 MB. Free memory was 79.1 MB in the beginning and 80.7 MB in the end (delta: -1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 5.68 ms. Allocated memory is still 111.1 MB. Free memory is still 80.7 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: 177]: 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 bitwiseAnd at line 41, overapproximation of someBinaryArithmeticDOUBLEoperation at line 47, 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, }; [L171] double x = __VERIFIER_nondet_double(); [L172] double y = 0.0; [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}] [L173] double res = fmod_double(x, y); [L18] return x != x; [L176] COND TRUE !isnan_double(res) [L177] 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: 721.2ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 27.3ms, AutomataDifference: 80.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 22.0ms, 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: 35.5ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 17.8ms SsaConstructionTime, 119.6ms SatisfiabilityAnalysisTime, 66.0ms InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 7 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-16 02:27:01,713 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9fbdcef-f1ed-442e-98fd-67e1f9423fe5/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-5709675 [2021-10-16 02:27:04,813 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:27:04,817 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:27:04,891 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:27:04,892 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:27:04,898 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:27:04,901 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:27:04,915 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:27:04,920 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:27:04,924 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:27:04,926 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:27:04,929 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:27:04,930 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:27:04,939 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:27:04,942 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:27:04,944 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:27:04,946 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:27:04,948 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:27:04,950 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:27:04,953 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:27:04,955 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:27:04,964 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:27:04,966 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:27:04,968 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:27:04,975 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:27:04,979 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:27:04,979 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:27:04,985 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:27:04,988 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:27:04,989 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:27:04,990 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:27:04,991 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:27:04,994 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:27:04,995 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:27:04,998 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:27:04,998 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:27:05,000 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:27:05,000 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:27:05,012 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:27:05,015 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:27:05,016 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:27:05,017 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9fbdcef-f1ed-442e-98fd-67e1f9423fe5/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-16 02:27:05,077 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:27:05,078 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:27:05,080 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:27:05,080 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:27:05,081 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:27:05,081 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:27:05,081 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:27:05,081 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:27:05,082 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:27:05,084 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:27:05,086 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:27:05,086 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:27:05,086 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:27:05,087 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 02:27:05,087 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:27:05,087 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 02:27:05,088 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:27:05,088 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-16 02:27:05,088 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-16 02:27:05,089 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:27:05,089 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 02:27:05,089 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:27:05,090 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 02:27:05,090 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:27:05,091 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-16 02:27:05,091 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:27:05,091 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:27:05,092 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:27:05,092 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:27:05,092 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 02:27:05,092 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-16 02:27:05,093 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-16 02:27:05,093 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 02:27:05,093 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:27:05,094 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:27:05,094 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_a9fbdcef-f1ed-442e-98fd-67e1f9423fe5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9fbdcef-f1ed-442e-98fd-67e1f9423fe5/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b1ef2080ffd97f82ac51854e7d9813eba864fd0a [2021-10-16 02:27:05,557 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:27:05,583 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:27:05,587 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:27:05,589 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:27:05,590 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:27:05,591 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9fbdcef-f1ed-442e-98fd-67e1f9423fe5/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/float-newlib/double_req_bl_1121a.c [2021-10-16 02:27:05,675 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9fbdcef-f1ed-442e-98fd-67e1f9423fe5/bin/utaipan-mTDlp9Zugs/data/40b4b3692/2008029a7cf04c3ab5a6103d075b0412/FLAG8fc42684a [2021-10-16 02:27:06,378 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:27:06,379 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9fbdcef-f1ed-442e-98fd-67e1f9423fe5/sv-benchmarks/c/float-newlib/double_req_bl_1121a.c [2021-10-16 02:27:06,396 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9fbdcef-f1ed-442e-98fd-67e1f9423fe5/bin/utaipan-mTDlp9Zugs/data/40b4b3692/2008029a7cf04c3ab5a6103d075b0412/FLAG8fc42684a [2021-10-16 02:27:06,694 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9fbdcef-f1ed-442e-98fd-67e1f9423fe5/bin/utaipan-mTDlp9Zugs/data/40b4b3692/2008029a7cf04c3ab5a6103d075b0412 [2021-10-16 02:27:06,697 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:27:06,699 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:27:06,701 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:27:06,701 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:27:06,722 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:27:06,723 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:27:06" (1/1) ... [2021-10-16 02:27:06,724 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63aaf54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:27:06, skipping insertion in model container [2021-10-16 02:27:06,724 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:27:06" (1/1) ... [2021-10-16 02:27:06,731 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:27:06,762 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:27:07,057 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_a9fbdcef-f1ed-442e-98fd-67e1f9423fe5/sv-benchmarks/c/float-newlib/double_req_bl_1121a.c[3883,3896] [2021-10-16 02:27:07,061 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:27:07,075 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 02:27:07,134 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_a9fbdcef-f1ed-442e-98fd-67e1f9423fe5/sv-benchmarks/c/float-newlib/double_req_bl_1121a.c[3883,3896] [2021-10-16 02:27:07,135 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:27:07,158 INFO L208 MainTranslator]: Completed translation [2021-10-16 02:27:07,158 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:27:07 WrapperNode [2021-10-16 02:27:07,158 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:27:07,160 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 02:27:07,160 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 02:27:07,160 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 02:27:07,169 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:27:07" (1/1) ... [2021-10-16 02:27:07,205 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:27:07" (1/1) ... [2021-10-16 02:27:07,257 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:27:07,257 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:27:07,258 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:27:07,258 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:27:07,275 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:27:07" (1/1) ... [2021-10-16 02:27:07,276 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:27:07" (1/1) ... [2021-10-16 02:27:07,306 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:27:07" (1/1) ... [2021-10-16 02:27:07,307 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:27:07" (1/1) ... [2021-10-16 02:27:07,339 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:27:07" (1/1) ... [2021-10-16 02:27:07,347 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:27:07" (1/1) ... [2021-10-16 02:27:07,350 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:27:07" (1/1) ... [2021-10-16 02:27:07,356 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:27:07,357 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:27:07,358 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:27:07,358 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:27:07,359 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:27:07" (1/1) ... [2021-10-16 02:27:07,367 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:27:07,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9fbdcef-f1ed-442e-98fd-67e1f9423fe5/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:27:07,395 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9fbdcef-f1ed-442e-98fd-67e1f9423fe5/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:27:07,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9fbdcef-f1ed-442e-98fd-67e1f9423fe5/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:27:07,456 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2021-10-16 02:27:07,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2021-10-16 02:27:07,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-16 02:27:07,456 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 02:27:07,457 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8 [2021-10-16 02:27:07,457 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-16 02:27:07,459 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:27:07,459 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:27:07,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-16 02:27:07,460 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-16 02:27:11,332 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:27:11,333 INFO L299 CfgBuilder]: Removed 22 assume(true) statements. [2021-10-16 02:27:11,335 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:27:11 BoogieIcfgContainer [2021-10-16 02:27:11,336 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:27:11,338 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:27:11,338 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:27:11,342 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:27:11,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:27:06" (1/3) ... [2021-10-16 02:27:11,343 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bb0776f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:27:11, skipping insertion in model container [2021-10-16 02:27:11,343 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:27:07" (2/3) ... [2021-10-16 02:27:11,344 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bb0776f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:27:11, skipping insertion in model container [2021-10-16 02:27:11,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:27:11" (3/3) ... [2021-10-16 02:27:11,345 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1121a.c [2021-10-16 02:27:11,351 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:27:11,351 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-16 02:27:11,420 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:27:11,432 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 02:27:11,433 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-16 02:27:11,468 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) [2021-10-16 02:27:11,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-16 02:27:11,479 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:27:11,481 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:27:11,482 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:27:11,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:27:11,499 INFO L82 PathProgramCache]: Analyzing trace with hash 668833300, now seen corresponding path program 1 times [2021-10-16 02:27:11,517 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:27:11,518 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [463937956] [2021-10-16 02:27:11,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:27:11,519 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:27:11,520 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9fbdcef-f1ed-442e-98fd-67e1f9423fe5/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:27:11,530 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9fbdcef-f1ed-442e-98fd-67e1f9423fe5/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:27:11,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9fbdcef-f1ed-442e-98fd-67e1f9423fe5/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-16 02:27:11,667 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9fbdcef-f1ed-442e-98fd-67e1f9423fe5/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-16 02:27:11,861 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9fbdcef-f1ed-442e-98fd-67e1f9423fe5/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:27:11,863 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 02:27:11,873 INFO L168 Benchmark]: Toolchain (without parser) took 5171.87 ms. Allocated memory was 60.8 MB in the beginning and 75.5 MB in the end (delta: 14.7 MB). Free memory was 39.0 MB in the beginning and 55.7 MB in the end (delta: -16.7 MB). Peak memory consumption was 337.3 kB. Max. memory is 16.1 GB. [2021-10-16 02:27:11,874 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 60.8 MB. Free memory is still 42.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:27:11,876 INFO L168 Benchmark]: CACSL2BoogieTranslator took 457.74 ms. Allocated memory is still 60.8 MB. Free memory was 38.9 MB in the beginning and 39.7 MB in the end (delta: -812.6 kB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-16 02:27:11,877 INFO L168 Benchmark]: Boogie Procedure Inliner took 97.08 ms. Allocated memory is still 60.8 MB. Free memory was 39.7 MB in the beginning and 37.4 MB in the end (delta: 2.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-16 02:27:11,878 INFO L168 Benchmark]: Boogie Preprocessor took 99.07 ms. Allocated memory is still 60.8 MB. Free memory was 37.4 MB in the beginning and 35.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:27:11,880 INFO L168 Benchmark]: RCFGBuilder took 3978.24 ms. Allocated memory was 60.8 MB in the beginning and 75.5 MB in the end (delta: 14.7 MB). Free memory was 35.3 MB in the beginning and 46.0 MB in the end (delta: -10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 16.1 GB. [2021-10-16 02:27:11,888 INFO L168 Benchmark]: TraceAbstraction took 532.20 ms. Allocated memory is still 75.5 MB. Free memory was 45.4 MB in the beginning and 55.7 MB in the end (delta: -10.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:27:11,895 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 60.8 MB. Free memory is still 42.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 457.74 ms. Allocated memory is still 60.8 MB. Free memory was 38.9 MB in the beginning and 39.7 MB in the end (delta: -812.6 kB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 97.08 ms. Allocated memory is still 60.8 MB. Free memory was 39.7 MB in the beginning and 37.4 MB in the end (delta: 2.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 99.07 ms. Allocated memory is still 60.8 MB. Free memory was 37.4 MB in the beginning and 35.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 3978.24 ms. Allocated memory was 60.8 MB in the beginning and 75.5 MB in the end (delta: 14.7 MB). Free memory was 35.3 MB in the beginning and 46.0 MB in the end (delta: -10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 532.20 ms. Allocated memory is still 75.5 MB. Free memory was 45.4 MB in the beginning and 55.7 MB in the end (delta: -10.3 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 02:27:12,078 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9fbdcef-f1ed-442e-98fd-67e1f9423fe5/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...