./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted/WhileTrue.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67dd0577-a119-4dba-898f-daf86c875dec/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67dd0577-a119-4dba-898f-daf86c875dec/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67dd0577-a119-4dba-898f-daf86c875dec/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67dd0577-a119-4dba-898f-daf86c875dec/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted/WhileTrue.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67dd0577-a119-4dba-898f-daf86c875dec/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67dd0577-a119-4dba-898f-daf86c875dec/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 2c915ce64f8b11abacbd175f69c99f9afd8b2edc1142f6db1504c1dcc6414eb1 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 06:34:17,069 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 06:34:17,153 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67dd0577-a119-4dba-898f-daf86c875dec/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Termination-64bit-Automizer_Default.epf [2023-11-29 06:34:17,157 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 06:34:17,157 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 06:34:17,181 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 06:34:17,181 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 06:34:17,182 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 06:34:17,183 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 06:34:17,183 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 06:34:17,184 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 06:34:17,185 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 06:34:17,185 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 06:34:17,186 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-11-29 06:34:17,186 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-11-29 06:34:17,187 INFO L153 SettingsManager]: * Use old map elimination=false [2023-11-29 06:34:17,187 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2023-11-29 06:34:17,188 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2023-11-29 06:34:17,188 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-11-29 06:34:17,188 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 06:34:17,189 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-11-29 06:34:17,189 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 06:34:17,190 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 06:34:17,190 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-11-29 06:34:17,191 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-11-29 06:34:17,191 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-11-29 06:34:17,191 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 06:34:17,192 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 06:34:17,192 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-11-29 06:34:17,192 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 06:34:17,193 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 06:34:17,193 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 06:34:17,193 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 06:34:17,194 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 06:34:17,194 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-11-29 06:34:17,194 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR 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_67dd0577-a119-4dba-898f-daf86c875dec/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67dd0577-a119-4dba-898f-daf86c875dec/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2c915ce64f8b11abacbd175f69c99f9afd8b2edc1142f6db1504c1dcc6414eb1 [2023-11-29 06:34:17,415 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 06:34:17,437 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 06:34:17,439 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 06:34:17,440 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 06:34:17,441 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 06:34:17,442 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67dd0577-a119-4dba-898f-daf86c875dec/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/termination-crafted/WhileTrue.c [2023-11-29 06:34:20,233 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 06:34:20,406 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 06:34:20,407 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67dd0577-a119-4dba-898f-daf86c875dec/sv-benchmarks/c/termination-crafted/WhileTrue.c [2023-11-29 06:34:20,413 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67dd0577-a119-4dba-898f-daf86c875dec/bin/uautomizer-verify-BQ2R08f2Ya/data/9be317626/76296f196d8d4f528cc8e15029f4df74/FLAGb6fdf2009 [2023-11-29 06:34:20,428 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67dd0577-a119-4dba-898f-daf86c875dec/bin/uautomizer-verify-BQ2R08f2Ya/data/9be317626/76296f196d8d4f528cc8e15029f4df74 [2023-11-29 06:34:20,430 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 06:34:20,432 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 06:34:20,433 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 06:34:20,433 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 06:34:20,439 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 06:34:20,439 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:34:20" (1/1) ... [2023-11-29 06:34:20,440 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59c07570 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:34:20, skipping insertion in model container [2023-11-29 06:34:20,441 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:34:20" (1/1) ... [2023-11-29 06:34:20,459 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 06:34:20,578 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 06:34:20,584 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 06:34:20,592 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 06:34:20,603 INFO L206 MainTranslator]: Completed translation [2023-11-29 06:34:20,603 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:34:20 WrapperNode [2023-11-29 06:34:20,603 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 06:34:20,604 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 06:34:20,604 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 06:34:20,604 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 06:34:20,610 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:34:20" (1/1) ... [2023-11-29 06:34:20,613 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:34:20" (1/1) ... [2023-11-29 06:34:20,624 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 8 [2023-11-29 06:34:20,624 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 06:34:20,625 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 06:34:20,625 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 06:34:20,625 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 06:34:20,634 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:34:20" (1/1) ... [2023-11-29 06:34:20,634 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:34:20" (1/1) ... [2023-11-29 06:34:20,634 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:34:20" (1/1) ... [2023-11-29 06:34:20,639 INFO L175 MemorySlicer]: No memory access in input program. [2023-11-29 06:34:20,639 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:34:20" (1/1) ... [2023-11-29 06:34:20,639 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:34:20" (1/1) ... [2023-11-29 06:34:20,640 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:34:20" (1/1) ... [2023-11-29 06:34:20,643 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:34:20" (1/1) ... [2023-11-29 06:34:20,643 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:34:20" (1/1) ... [2023-11-29 06:34:20,644 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:34:20" (1/1) ... [2023-11-29 06:34:20,645 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 06:34:20,646 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 06:34:20,646 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 06:34:20,646 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 06:34:20,647 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:34:20" (1/1) ... [2023-11-29 06:34:20,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 06:34:20,660 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67dd0577-a119-4dba-898f-daf86c875dec/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:34:20,671 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67dd0577-a119-4dba-898f-daf86c875dec/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 06:34:20,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67dd0577-a119-4dba-898f-daf86c875dec/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2023-11-29 06:34:20,703 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 06:34:20,704 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 06:34:20,763 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 06:34:20,765 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 06:34:20,790 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 06:34:20,798 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 06:34:20,798 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 06:34:20,800 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:34:20 BoogieIcfgContainer [2023-11-29 06:34:20,800 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 06:34:20,801 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-11-29 06:34:20,801 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-11-29 06:34:20,804 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-11-29 06:34:20,805 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-29 06:34:20,805 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 29.11 06:34:20" (1/3) ... [2023-11-29 06:34:20,806 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@24de8f20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 06:34:20, skipping insertion in model container [2023-11-29 06:34:20,806 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-29 06:34:20,806 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:34:20" (2/3) ... [2023-11-29 06:34:20,806 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@24de8f20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 06:34:20, skipping insertion in model container [2023-11-29 06:34:20,806 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-29 06:34:20,807 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:34:20" (3/3) ... [2023-11-29 06:34:20,808 INFO L332 chiAutomizerObserver]: Analyzing ICFG WhileTrue.c [2023-11-29 06:34:20,857 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-11-29 06:34:20,857 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-11-29 06:34:20,857 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-11-29 06:34:20,857 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-11-29 06:34:20,858 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-11-29 06:34:20,858 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-11-29 06:34:20,858 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-11-29 06:34:20,858 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-11-29 06:34:20,862 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 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) [2023-11-29 06:34:20,877 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2023-11-29 06:34:20,877 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-29 06:34:20,877 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-29 06:34:20,881 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-29 06:34:20,881 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2023-11-29 06:34:20,882 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-11-29 06:34:20,882 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 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) [2023-11-29 06:34:20,883 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2023-11-29 06:34:20,883 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-29 06:34:20,883 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-29 06:34:20,884 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-29 06:34:20,884 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2023-11-29 06:34:20,890 INFO L748 eck$LassoCheckResult]: Stem: 5#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true; 7#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1; 4#L13-2true [2023-11-29 06:34:20,890 INFO L750 eck$LassoCheckResult]: Loop: 4#L13-2true assume !false; 4#L13-2true [2023-11-29 06:34:20,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:34:20,896 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2023-11-29 06:34:20,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:34:20,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99092184] [2023-11-29 06:34:20,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:34:20,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:34:20,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 06:34:20,968 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 06:34:20,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 06:34:20,983 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 06:34:20,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:34:20,986 INFO L85 PathProgramCache]: Analyzing trace with hash 42, now seen corresponding path program 1 times [2023-11-29 06:34:20,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:34:20,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493507139] [2023-11-29 06:34:20,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:34:20,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:34:20,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 06:34:20,992 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 06:34:20,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 06:34:20,995 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 06:34:20,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:34:20,997 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2023-11-29 06:34:20,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:34:20,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528731784] [2023-11-29 06:34:20,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:34:20,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:34:21,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 06:34:21,004 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 06:34:21,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 06:34:21,007 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 06:34:21,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 06:34:21,041 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 06:34:21,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 06:34:21,057 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 29.11 06:34:21 BoogieIcfgContainer [2023-11-29 06:34:21,057 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-11-29 06:34:21,058 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-29 06:34:21,058 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-29 06:34:21,058 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-29 06:34:21,059 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:34:20" (3/4) ... [2023-11-29 06:34:21,060 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2023-11-29 06:34:21,086 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67dd0577-a119-4dba-898f-daf86c875dec/bin/uautomizer-verify-BQ2R08f2Ya/witness.graphml [2023-11-29 06:34:21,086 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-29 06:34:21,087 INFO L158 Benchmark]: Toolchain (without parser) took 654.94ms. Allocated memory is still 153.1MB. Free memory was 124.9MB in the beginning and 88.8MB in the end (delta: 36.1MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. [2023-11-29 06:34:21,087 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 111.1MB. Free memory is still 72.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 06:34:21,088 INFO L158 Benchmark]: CACSL2BoogieTranslator took 170.30ms. Allocated memory is still 153.1MB. Free memory was 124.9MB in the beginning and 115.5MB in the end (delta: 9.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-29 06:34:21,089 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.62ms. Allocated memory is still 153.1MB. Free memory was 115.5MB in the beginning and 114.3MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 06:34:21,089 INFO L158 Benchmark]: Boogie Preprocessor took 20.31ms. Allocated memory is still 153.1MB. Free memory was 114.3MB in the beginning and 112.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 06:34:21,090 INFO L158 Benchmark]: RCFGBuilder took 153.88ms. Allocated memory is still 153.1MB. Free memory was 112.9MB in the beginning and 105.1MB in the end (delta: 7.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-29 06:34:21,091 INFO L158 Benchmark]: BuchiAutomizer took 256.32ms. Allocated memory is still 153.1MB. Free memory was 105.1MB in the beginning and 90.4MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-29 06:34:21,091 INFO L158 Benchmark]: Witness Printer took 28.15ms. Allocated memory is still 153.1MB. Free memory was 90.3MB in the beginning and 88.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 06:34:21,095 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 111.1MB. Free memory is still 72.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 170.30ms. Allocated memory is still 153.1MB. Free memory was 124.9MB in the beginning and 115.5MB in the end (delta: 9.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 20.62ms. Allocated memory is still 153.1MB. Free memory was 115.5MB in the beginning and 114.3MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 20.31ms. Allocated memory is still 153.1MB. Free memory was 114.3MB in the beginning and 112.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 153.88ms. Allocated memory is still 153.1MB. Free memory was 112.9MB in the beginning and 105.1MB in the end (delta: 7.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * BuchiAutomizer took 256.32ms. Allocated memory is still 153.1MB. Free memory was 105.1MB in the beginning and 90.4MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Witness Printer took 28.15ms. Allocated memory is still 153.1MB. Free memory was 90.3MB in the beginning and 88.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Trivial decomposition into one nonterminating module. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.2s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 0.1s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 0. Minimization of det autom 0. Minimization of nondet autom 0. Automata minimization No data available. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - LassoShapedNonTerminationArgument [Line: 13]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite program execution. Stem: Loop: [L13] COND TRUE \read(true) End of lasso representation. - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 13]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: Loop: [L13] COND TRUE \read(true) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2023-11-29 06:34:21,117 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67dd0577-a119-4dba-898f-daf86c875dec/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)