./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted/Rotation180-1.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_b1914793-4484-4741-a050-5fceef6fbd6a/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1914793-4484-4741-a050-5fceef6fbd6a/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_b1914793-4484-4741-a050-5fceef6fbd6a/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1914793-4484-4741-a050-5fceef6fbd6a/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted/Rotation180-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1914793-4484-4741-a050-5fceef6fbd6a/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_b1914793-4484-4741-a050-5fceef6fbd6a/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 fde09a60595b1ccfdc4082db9307f665f7d9aa8adcf6aa0f827e624d65c22a35 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 01:51:55,770 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 01:51:55,843 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1914793-4484-4741-a050-5fceef6fbd6a/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Termination-64bit-Automizer_Default.epf [2023-11-29 01:51:55,848 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 01:51:55,849 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 01:51:55,875 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 01:51:55,876 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 01:51:55,877 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 01:51:55,877 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 01:51:55,878 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 01:51:55,879 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 01:51:55,879 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 01:51:55,880 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 01:51:55,880 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-11-29 01:51:55,881 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-11-29 01:51:55,881 INFO L153 SettingsManager]: * Use old map elimination=false [2023-11-29 01:51:55,882 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2023-11-29 01:51:55,882 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2023-11-29 01:51:55,883 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-11-29 01:51:55,883 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 01:51:55,884 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-11-29 01:51:55,885 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 01:51:55,885 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 01:51:55,886 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-11-29 01:51:55,886 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-11-29 01:51:55,887 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-11-29 01:51:55,887 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 01:51:55,887 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 01:51:55,888 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-11-29 01:51:55,888 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 01:51:55,889 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 01:51:55,889 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 01:51:55,890 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 01:51:55,896 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 01:51:55,897 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-11-29 01:51:55,897 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_b1914793-4484-4741-a050-5fceef6fbd6a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1914793-4484-4741-a050-5fceef6fbd6a/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fde09a60595b1ccfdc4082db9307f665f7d9aa8adcf6aa0f827e624d65c22a35 [2023-11-29 01:51:56,134 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 01:51:56,155 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 01:51:56,158 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 01:51:56,159 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 01:51:56,160 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 01:51:56,161 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1914793-4484-4741-a050-5fceef6fbd6a/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/termination-crafted/Rotation180-1.c [2023-11-29 01:51:58,882 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 01:51:59,045 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 01:51:59,046 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1914793-4484-4741-a050-5fceef6fbd6a/sv-benchmarks/c/termination-crafted/Rotation180-1.c [2023-11-29 01:51:59,053 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1914793-4484-4741-a050-5fceef6fbd6a/bin/uautomizer-verify-BQ2R08f2Ya/data/99de1484a/ad85de0ec00943da9b410e27337e5d28/FLAG05f679a29 [2023-11-29 01:51:59,067 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1914793-4484-4741-a050-5fceef6fbd6a/bin/uautomizer-verify-BQ2R08f2Ya/data/99de1484a/ad85de0ec00943da9b410e27337e5d28 [2023-11-29 01:51:59,070 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 01:51:59,072 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 01:51:59,073 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 01:51:59,073 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 01:51:59,079 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 01:51:59,079 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:51:59" (1/1) ... [2023-11-29 01:51:59,080 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17c23ef2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:51:59, skipping insertion in model container [2023-11-29 01:51:59,080 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:51:59" (1/1) ... [2023-11-29 01:51:59,099 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 01:51:59,234 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:51:59,239 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 01:51:59,250 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:51:59,262 INFO L206 MainTranslator]: Completed translation [2023-11-29 01:51:59,263 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:51:59 WrapperNode [2023-11-29 01:51:59,263 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 01:51:59,264 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 01:51:59,264 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 01:51:59,264 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 01:51:59,270 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:51:59" (1/1) ... [2023-11-29 01:51:59,273 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:51:59" (1/1) ... [2023-11-29 01:51:59,286 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 26 [2023-11-29 01:51:59,286 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 01:51:59,287 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 01:51:59,287 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 01:51:59,287 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 01:51:59,295 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:51:59" (1/1) ... [2023-11-29 01:51:59,295 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:51:59" (1/1) ... [2023-11-29 01:51:59,296 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:51:59" (1/1) ... [2023-11-29 01:51:59,301 INFO L175 MemorySlicer]: No memory access in input program. [2023-11-29 01:51:59,301 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:51:59" (1/1) ... [2023-11-29 01:51:59,301 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:51:59" (1/1) ... [2023-11-29 01:51:59,303 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:51:59" (1/1) ... [2023-11-29 01:51:59,306 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:51:59" (1/1) ... [2023-11-29 01:51:59,306 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:51:59" (1/1) ... [2023-11-29 01:51:59,307 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:51:59" (1/1) ... [2023-11-29 01:51:59,307 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 01:51:59,308 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 01:51:59,308 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 01:51:59,309 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 01:51:59,309 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:51:59" (1/1) ... [2023-11-29 01:51:59,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 01:51:59,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1914793-4484-4741-a050-5fceef6fbd6a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:51:59,334 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1914793-4484-4741-a050-5fceef6fbd6a/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 01:51:59,337 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1914793-4484-4741-a050-5fceef6fbd6a/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2023-11-29 01:51:59,366 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 01:51:59,366 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 01:51:59,430 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 01:51:59,433 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 01:51:59,483 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 01:51:59,492 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 01:51:59,493 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 01:51:59,495 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:51:59 BoogieIcfgContainer [2023-11-29 01:51:59,495 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 01:51:59,496 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-11-29 01:51:59,496 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-11-29 01:51:59,499 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-11-29 01:51:59,500 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-29 01:51:59,500 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 29.11 01:51:59" (1/3) ... [2023-11-29 01:51:59,501 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@289d5518 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 01:51:59, skipping insertion in model container [2023-11-29 01:51:59,501 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-29 01:51:59,501 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:51:59" (2/3) ... [2023-11-29 01:51:59,502 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@289d5518 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 01:51:59, skipping insertion in model container [2023-11-29 01:51:59,502 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-29 01:51:59,502 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:51:59" (3/3) ... [2023-11-29 01:51:59,503 INFO L332 chiAutomizerObserver]: Analyzing ICFG Rotation180-1.c [2023-11-29 01:51:59,554 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-11-29 01:51:59,554 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-11-29 01:51:59,554 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-11-29 01:51:59,554 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-11-29 01:51:59,554 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-11-29 01:51:59,554 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-11-29 01:51:59,555 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-11-29 01:51:59,555 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-11-29 01:51:59,559 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 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 01:51:59,573 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2023-11-29 01:51:59,573 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-29 01:51:59,573 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-29 01:51:59,577 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2023-11-29 01:51:59,577 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2023-11-29 01:51:59,578 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-11-29 01:51:59,578 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 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 01:51:59,579 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2023-11-29 01:51:59,579 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-29 01:51:59,579 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-29 01:51:59,579 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2023-11-29 01:51:59,579 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2023-11-29 01:51:59,585 INFO L748 eck$LassoCheckResult]: Stem: 7#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true; 9#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~oldx~0#1, main_~x~0#1, main_~y~0#1;havoc main_~oldx~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 6#L21true assume !!(main_~x~0#1 >= -2147483647); 3#L22true assume !!(main_~y~0#1 >= -2147483647); 5#L23-2true [2023-11-29 01:51:59,585 INFO L750 eck$LassoCheckResult]: Loop: 5#L23-2true assume !false;main_~oldx~0#1 := main_~x~0#1;main_~x~0#1 := -main_~y~0#1;main_~y~0#1 := main_~oldx~0#1; 5#L23-2true [2023-11-29 01:51:59,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:51:59,590 INFO L85 PathProgramCache]: Analyzing trace with hash 925672, now seen corresponding path program 1 times [2023-11-29 01:51:59,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:51:59,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385129360] [2023-11-29 01:51:59,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:51:59,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:51:59,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 01:51:59,663 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 01:51:59,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 01:51:59,680 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 01:51:59,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:51:59,683 INFO L85 PathProgramCache]: Analyzing trace with hash 52, now seen corresponding path program 1 times [2023-11-29 01:51:59,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:51:59,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312952639] [2023-11-29 01:51:59,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:51:59,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:51:59,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 01:51:59,694 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 01:51:59,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 01:51:59,700 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 01:51:59,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:51:59,702 INFO L85 PathProgramCache]: Analyzing trace with hash 28695853, now seen corresponding path program 1 times [2023-11-29 01:51:59,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:51:59,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996168723] [2023-11-29 01:51:59,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:51:59,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:51:59,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 01:51:59,712 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 01:51:59,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 01:51:59,719 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 01:51:59,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 01:51:59,827 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 01:51:59,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 01:51:59,852 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 29.11 01:51:59 BoogieIcfgContainer [2023-11-29 01:51:59,852 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-11-29 01:51:59,853 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-29 01:51:59,853 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-29 01:51:59,853 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-29 01:51:59,853 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:51:59" (3/4) ... [2023-11-29 01:51:59,855 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2023-11-29 01:51:59,886 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1914793-4484-4741-a050-5fceef6fbd6a/bin/uautomizer-verify-BQ2R08f2Ya/witness.graphml [2023-11-29 01:51:59,887 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-29 01:51:59,888 INFO L158 Benchmark]: Toolchain (without parser) took 815.89ms. Allocated memory is still 155.2MB. Free memory was 116.5MB in the beginning and 75.3MB in the end (delta: 41.2MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. [2023-11-29 01:51:59,888 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 155.2MB. Free memory is still 120.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 01:51:59,889 INFO L158 Benchmark]: CACSL2BoogieTranslator took 190.30ms. Allocated memory is still 155.2MB. Free memory was 116.1MB in the beginning and 106.8MB in the end (delta: 9.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-29 01:51:59,889 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.52ms. Allocated memory is still 155.2MB. Free memory was 106.8MB in the beginning and 105.6MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 01:51:59,890 INFO L158 Benchmark]: Boogie Preprocessor took 21.03ms. Allocated memory is still 155.2MB. Free memory was 105.6MB in the beginning and 104.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 01:51:59,890 INFO L158 Benchmark]: RCFGBuilder took 186.72ms. Allocated memory is still 155.2MB. Free memory was 104.0MB in the beginning and 95.6MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-29 01:51:59,891 INFO L158 Benchmark]: BuchiAutomizer took 356.42ms. Allocated memory is still 155.2MB. Free memory was 95.6MB in the beginning and 77.1MB in the end (delta: 18.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-29 01:51:59,891 INFO L158 Benchmark]: Witness Printer took 33.84ms. Allocated memory is still 155.2MB. Free memory was 76.7MB in the beginning and 75.3MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 01:51:59,895 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 155.2MB. Free memory is still 120.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 190.30ms. Allocated memory is still 155.2MB. Free memory was 116.1MB in the beginning and 106.8MB in the end (delta: 9.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 22.52ms. Allocated memory is still 155.2MB. Free memory was 106.8MB in the beginning and 105.6MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 21.03ms. Allocated memory is still 155.2MB. Free memory was 105.6MB in the beginning and 104.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 186.72ms. Allocated memory is still 155.2MB. Free memory was 104.0MB in the beginning and 95.6MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 356.42ms. Allocated memory is still 155.2MB. Free memory was 95.6MB in the beginning and 77.1MB in the end (delta: 18.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 33.84ms. Allocated memory is still 155.2MB. Free memory was 76.7MB in the beginning and 75.3MB in the end (delta: 1.4MB). There was no memory consumed. 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 0.2s. 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: 23]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite program execution. Stem: [L15] int oldx; [L16] int x; [L17] int y; [L18] x = __VERIFIER_nondet_int() [L19] y = __VERIFIER_nondet_int() [L21] COND FALSE !(!(x>=-2147483647)) VAL [x=0] [L22] COND FALSE !(!(y>=-2147483647)) VAL [x=0, y=0] Loop: [L23] COND TRUE \read(true) [L24] oldx = x [L25] x = -y [L26] y = oldx End of lasso representation. - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 23]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L15] int oldx; [L16] int x; [L17] int y; [L18] x = __VERIFIER_nondet_int() [L19] y = __VERIFIER_nondet_int() [L21] COND FALSE !(!(x>=-2147483647)) VAL [x=0] [L22] COND FALSE !(!(y>=-2147483647)) VAL [x=0, y=0] Loop: [L23] COND TRUE \read(true) [L24] oldx = x [L25] x = -y [L26] y = oldx End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2023-11-29 01:51:59,918 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1914793-4484-4741-a050-5fceef6fbd6a/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)