./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex2.20.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_96fa984a-5601-4af4-9a6f-d3e21ec6ba91/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96fa984a-5601-4af4-9a6f-d3e21ec6ba91/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_96fa984a-5601-4af4-9a6f-d3e21ec6ba91/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96fa984a-5601-4af4-9a6f-d3e21ec6ba91/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex2.20.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96fa984a-5601-4af4-9a6f-d3e21ec6ba91/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_96fa984a-5601-4af4-9a6f-d3e21ec6ba91/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 47fb78ac9820c6d98917fe0cc73f6365b4f645d027bada4a39a82cb418e09c1c --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 07:11:47,991 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 07:11:48,053 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96fa984a-5601-4af4-9a6f-d3e21ec6ba91/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Termination-64bit-Automizer_Default.epf [2023-11-29 07:11:48,057 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 07:11:48,058 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 07:11:48,080 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 07:11:48,080 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 07:11:48,081 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 07:11:48,081 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 07:11:48,082 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 07:11:48,083 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 07:11:48,083 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 07:11:48,084 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 07:11:48,085 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-11-29 07:11:48,085 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-11-29 07:11:48,086 INFO L153 SettingsManager]: * Use old map elimination=false [2023-11-29 07:11:48,086 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2023-11-29 07:11:48,087 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2023-11-29 07:11:48,087 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-11-29 07:11:48,088 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 07:11:48,088 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-11-29 07:11:48,089 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 07:11:48,090 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 07:11:48,090 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-11-29 07:11:48,090 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-11-29 07:11:48,091 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-11-29 07:11:48,091 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 07:11:48,092 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 07:11:48,092 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-11-29 07:11:48,092 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 07:11:48,093 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 07:11:48,093 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 07:11:48,094 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 07:11:48,094 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 07:11:48,094 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-11-29 07:11:48,095 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_96fa984a-5601-4af4-9a6f-d3e21ec6ba91/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96fa984a-5601-4af4-9a6f-d3e21ec6ba91/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 47fb78ac9820c6d98917fe0cc73f6365b4f645d027bada4a39a82cb418e09c1c [2023-11-29 07:11:48,316 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 07:11:48,345 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 07:11:48,348 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 07:11:48,349 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 07:11:48,349 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 07:11:48,351 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96fa984a-5601-4af4-9a6f-d3e21ec6ba91/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex2.20.c [2023-11-29 07:11:51,107 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 07:11:51,279 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 07:11:51,279 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96fa984a-5601-4af4-9a6f-d3e21ec6ba91/sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex2.20.c [2023-11-29 07:11:51,286 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96fa984a-5601-4af4-9a6f-d3e21ec6ba91/bin/uautomizer-verify-BQ2R08f2Ya/data/a2419e055/11a414c42d6841ec9a585a9f2c998929/FLAGf322fa783 [2023-11-29 07:11:51,303 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96fa984a-5601-4af4-9a6f-d3e21ec6ba91/bin/uautomizer-verify-BQ2R08f2Ya/data/a2419e055/11a414c42d6841ec9a585a9f2c998929 [2023-11-29 07:11:51,306 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 07:11:51,308 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 07:11:51,309 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 07:11:51,310 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 07:11:51,317 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 07:11:51,317 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:11:51" (1/1) ... [2023-11-29 07:11:51,319 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f8d4216 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:11:51, skipping insertion in model container [2023-11-29 07:11:51,319 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:11:51" (1/1) ... [2023-11-29 07:11:51,341 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 07:11:51,513 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 07:11:51,521 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 07:11:51,537 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 07:11:51,555 INFO L206 MainTranslator]: Completed translation [2023-11-29 07:11:51,555 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:11:51 WrapperNode [2023-11-29 07:11:51,555 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 07:11:51,557 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 07:11:51,557 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 07:11:51,557 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 07:11:51,566 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:11:51" (1/1) ... [2023-11-29 07:11:51,571 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:11:51" (1/1) ... [2023-11-29 07:11:51,591 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 20 [2023-11-29 07:11:51,592 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 07:11:51,592 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 07:11:51,593 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 07:11:51,593 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 07:11:51,606 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:11:51" (1/1) ... [2023-11-29 07:11:51,607 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:11:51" (1/1) ... [2023-11-29 07:11:51,608 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:11:51" (1/1) ... [2023-11-29 07:11:51,615 INFO L175 MemorySlicer]: No memory access in input program. [2023-11-29 07:11:51,616 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:11:51" (1/1) ... [2023-11-29 07:11:51,616 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:11:51" (1/1) ... [2023-11-29 07:11:51,618 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:11:51" (1/1) ... [2023-11-29 07:11:51,623 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:11:51" (1/1) ... [2023-11-29 07:11:51,624 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:11:51" (1/1) ... [2023-11-29 07:11:51,625 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:11:51" (1/1) ... [2023-11-29 07:11:51,626 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 07:11:51,627 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 07:11:51,628 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 07:11:51,628 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 07:11:51,629 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:11:51" (1/1) ... [2023-11-29 07:11:51,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 07:11:51,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96fa984a-5601-4af4-9a6f-d3e21ec6ba91/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:11:51,665 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96fa984a-5601-4af4-9a6f-d3e21ec6ba91/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 07:11:51,669 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96fa984a-5601-4af4-9a6f-d3e21ec6ba91/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2023-11-29 07:11:51,706 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 07:11:51,706 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 07:11:51,803 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 07:11:51,806 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 07:11:51,863 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 07:11:51,873 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 07:11:51,873 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 07:11:51,875 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:11:51 BoogieIcfgContainer [2023-11-29 07:11:51,876 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 07:11:51,877 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-11-29 07:11:51,877 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-11-29 07:11:51,881 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-11-29 07:11:51,882 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-29 07:11:51,883 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 29.11 07:11:51" (1/3) ... [2023-11-29 07:11:51,884 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2748c0c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 07:11:51, skipping insertion in model container [2023-11-29 07:11:51,884 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-29 07:11:51,884 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:11:51" (2/3) ... [2023-11-29 07:11:51,885 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2748c0c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 07:11:51, skipping insertion in model container [2023-11-29 07:11:51,885 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-29 07:11:51,885 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:11:51" (3/3) ... [2023-11-29 07:11:51,887 INFO L332 chiAutomizerObserver]: Analyzing ICFG ChenFlurMukhopadhyay-SAS2012-Ex2.20.c [2023-11-29 07:11:51,947 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-11-29 07:11:51,948 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-11-29 07:11:51,948 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-11-29 07:11:51,948 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-11-29 07:11:51,948 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-11-29 07:11:51,949 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-11-29 07:11:51,949 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-11-29 07:11:51,949 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-11-29 07:11:51,954 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 07:11:51,972 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2023-11-29 07:11:51,972 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-29 07:11:51,972 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-29 07:11:51,977 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-29 07:11:51,978 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2023-11-29 07:11:51,978 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-11-29 07:11:51,978 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 07:11:51,979 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2023-11-29 07:11:51,979 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-29 07:11:51,980 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-29 07:11:51,980 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-29 07:11:51,980 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2023-11-29 07:11:51,989 INFO L748 eck$LassoCheckResult]: Stem: 5#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true; 6#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 4#L26-2true [2023-11-29 07:11:51,989 INFO L750 eck$LassoCheckResult]: Loop: 4#L26-2true assume !!((main_~x~0#1 > main_~y~0#1 && main_~y~0#1 >= 1) && main_~y~0#1 <= 2);main_~x~0#1 := main_~x~0#1 - main_~y~0#1;havoc main_#t~nondet2#1;main_~y~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 4#L26-2true [2023-11-29 07:11:51,995 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:11:51,996 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2023-11-29 07:11:52,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:11:52,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758276111] [2023-11-29 07:11:52,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:11:52,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:11:52,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 07:11:52,084 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 07:11:52,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 07:11:52,102 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 07:11:52,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:11:52,106 INFO L85 PathProgramCache]: Analyzing trace with hash 42, now seen corresponding path program 1 times [2023-11-29 07:11:52,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:11:52,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102851615] [2023-11-29 07:11:52,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:11:52,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:11:52,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 07:11:52,119 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 07:11:52,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 07:11:52,125 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 07:11:52,127 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:11:52,127 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2023-11-29 07:11:52,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:11:52,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758870293] [2023-11-29 07:11:52,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:11:52,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:11:52,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 07:11:52,136 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 07:11:52,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 07:11:52,143 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 07:11:52,214 INFO L210 LassoAnalysis]: Preferences: [2023-11-29 07:11:52,215 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-29 07:11:52,215 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-29 07:11:52,215 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-29 07:11:52,215 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-29 07:11:52,215 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 07:11:52,215 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-29 07:11:52,215 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-29 07:11:52,216 INFO L133 ssoRankerPreferences]: Filename of dumped script: ChenFlurMukhopadhyay-SAS2012-Ex2.20.c_Iteration1_Loop [2023-11-29 07:11:52,216 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-29 07:11:52,216 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-29 07:11:52,234 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 07:11:52,246 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 07:11:52,251 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 07:11:52,265 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 07:11:52,329 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-29 07:11:52,329 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-29 07:11:52,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 07:11:52,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96fa984a-5601-4af4-9a6f-d3e21ec6ba91/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:11:52,334 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96fa984a-5601-4af4-9a6f-d3e21ec6ba91/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 07:11:52,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96fa984a-5601-4af4-9a6f-d3e21ec6ba91/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2023-11-29 07:11:52,339 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 07:11:52,339 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 07:11:52,361 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-29 07:11:52,361 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-29 07:11:52,367 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96fa984a-5601-4af4-9a6f-d3e21ec6ba91/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2023-11-29 07:11:52,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 07:11:52,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96fa984a-5601-4af4-9a6f-d3e21ec6ba91/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:11:52,369 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96fa984a-5601-4af4-9a6f-d3e21ec6ba91/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 07:11:52,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96fa984a-5601-4af4-9a6f-d3e21ec6ba91/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2023-11-29 07:11:52,375 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 07:11:52,376 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 07:11:52,395 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-29 07:11:52,396 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-29 07:11:52,398 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96fa984a-5601-4af4-9a6f-d3e21ec6ba91/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2023-11-29 07:11:52,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 07:11:52,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96fa984a-5601-4af4-9a6f-d3e21ec6ba91/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:11:52,400 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96fa984a-5601-4af4-9a6f-d3e21ec6ba91/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 07:11:52,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96fa984a-5601-4af4-9a6f-d3e21ec6ba91/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2023-11-29 07:11:52,403 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 07:11:52,403 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 07:11:52,418 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96fa984a-5601-4af4-9a6f-d3e21ec6ba91/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2023-11-29 07:11:52,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 07:11:52,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96fa984a-5601-4af4-9a6f-d3e21ec6ba91/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:11:52,420 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96fa984a-5601-4af4-9a6f-d3e21ec6ba91/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 07:11:52,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96fa984a-5601-4af4-9a6f-d3e21ec6ba91/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2023-11-29 07:11:52,431 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-29 07:11:52,431 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 07:11:52,457 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-29 07:11:52,460 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96fa984a-5601-4af4-9a6f-d3e21ec6ba91/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2023-11-29 07:11:52,460 INFO L210 LassoAnalysis]: Preferences: [2023-11-29 07:11:52,461 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-29 07:11:52,461 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-29 07:11:52,461 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-29 07:11:52,461 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-29 07:11:52,461 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 07:11:52,461 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-29 07:11:52,461 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-29 07:11:52,462 INFO L133 ssoRankerPreferences]: Filename of dumped script: ChenFlurMukhopadhyay-SAS2012-Ex2.20.c_Iteration1_Loop [2023-11-29 07:11:52,462 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-29 07:11:52,462 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-29 07:11:52,465 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 07:11:52,470 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 07:11:52,482 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 07:11:52,486 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 07:11:52,538 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-29 07:11:52,542 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-29 07:11:52,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 07:11:52,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96fa984a-5601-4af4-9a6f-d3e21ec6ba91/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:11:52,545 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96fa984a-5601-4af4-9a6f-d3e21ec6ba91/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 07:11:52,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96fa984a-5601-4af4-9a6f-d3e21ec6ba91/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2023-11-29 07:11:52,548 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-29 07:11:52,561 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 07:11:52,561 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 07:11:52,561 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 07:11:52,561 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 07:11:52,566 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-11-29 07:11:52,566 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-11-29 07:11:52,575 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-29 07:11:52,579 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96fa984a-5601-4af4-9a6f-d3e21ec6ba91/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2023-11-29 07:11:52,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 07:11:52,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96fa984a-5601-4af4-9a6f-d3e21ec6ba91/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:11:52,580 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96fa984a-5601-4af4-9a6f-d3e21ec6ba91/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 07:11:52,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96fa984a-5601-4af4-9a6f-d3e21ec6ba91/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2023-11-29 07:11:52,583 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-29 07:11:52,594 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 07:11:52,594 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 07:11:52,595 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 07:11:52,595 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 07:11:52,595 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 07:11:52,597 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 07:11:52,597 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 07:11:52,601 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-29 07:11:52,604 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-29 07:11:52,604 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-11-29 07:11:52,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 07:11:52,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96fa984a-5601-4af4-9a6f-d3e21ec6ba91/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:11:52,627 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96fa984a-5601-4af4-9a6f-d3e21ec6ba91/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 07:11:52,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96fa984a-5601-4af4-9a6f-d3e21ec6ba91/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2023-11-29 07:11:52,629 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-29 07:11:52,629 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-29 07:11:52,629 INFO L513 LassoAnalysis]: Proved termination. [2023-11-29 07:11:52,630 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = 1*ULTIMATE.start_main_~x~0#1 Supporting invariants [] [2023-11-29 07:11:52,633 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96fa984a-5601-4af4-9a6f-d3e21ec6ba91/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2023-11-29 07:11:52,636 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-29 07:11:52,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:11:52,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:11:52,664 WARN L260 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 07:11:52,665 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:11:52,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:11:52,676 WARN L260 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 07:11:52,677 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:11:52,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 07:11:52,708 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2023-11-29 07:11:52,710 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First 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) Second operand has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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 07:11:52,743 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First 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). Second operand has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) Result 14 states and 17 transitions. Complement of second has 6 states. [2023-11-29 07:11:52,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2023-11-29 07:11:52,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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 07:11:52,774 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96fa984a-5601-4af4-9a6f-d3e21ec6ba91/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2023-11-29 07:11:52,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2023-11-29 07:11:52,780 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 2 letters. Loop has 1 letters. [2023-11-29 07:11:52,781 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 07:11:52,781 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 3 letters. Loop has 1 letters. [2023-11-29 07:11:52,781 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 07:11:52,781 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 2 letters. Loop has 2 letters. [2023-11-29 07:11:52,781 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 07:11:52,782 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 17 transitions. [2023-11-29 07:11:52,784 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-11-29 07:11:52,786 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 0 states and 0 transitions. [2023-11-29 07:11:52,787 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2023-11-29 07:11:52,788 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2023-11-29 07:11:52,788 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2023-11-29 07:11:52,788 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 07:11:52,788 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-29 07:11:52,788 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-29 07:11:52,788 INFO L428 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-29 07:11:52,789 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-11-29 07:11:52,789 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2023-11-29 07:11:52,789 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-11-29 07:11:52,789 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2023-11-29 07:11:52,794 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 29.11 07:11:52 BoogieIcfgContainer [2023-11-29 07:11:52,794 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-11-29 07:11:52,795 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-29 07:11:52,795 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-29 07:11:52,795 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-29 07:11:52,795 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:11:51" (3/4) ... [2023-11-29 07:11:52,796 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-29 07:11:52,797 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-29 07:11:52,798 INFO L158 Benchmark]: Toolchain (without parser) took 1489.88ms. Allocated memory is still 165.7MB. Free memory was 130.4MB in the beginning and 134.7MB in the end (delta: -4.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 07:11:52,798 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 165.7MB. Free memory is still 143.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 07:11:52,798 INFO L158 Benchmark]: CACSL2BoogieTranslator took 246.41ms. Allocated memory is still 165.7MB. Free memory was 130.4MB in the beginning and 121.0MB in the end (delta: 9.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-29 07:11:52,799 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.02ms. Allocated memory is still 165.7MB. Free memory was 121.0MB in the beginning and 119.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 07:11:52,799 INFO L158 Benchmark]: Boogie Preprocessor took 34.13ms. Allocated memory is still 165.7MB. Free memory was 119.5MB in the beginning and 118.4MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 07:11:52,800 INFO L158 Benchmark]: RCFGBuilder took 248.40ms. Allocated memory is still 165.7MB. Free memory was 118.4MB in the beginning and 110.1MB in the end (delta: 8.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-29 07:11:52,800 INFO L158 Benchmark]: BuchiAutomizer took 917.39ms. Allocated memory is still 165.7MB. Free memory was 110.0MB in the beginning and 134.7MB in the end (delta: -24.8MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 07:11:52,800 INFO L158 Benchmark]: Witness Printer took 2.55ms. Allocated memory is still 165.7MB. Free memory is still 134.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 07:11:52,803 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 165.7MB. Free memory is still 143.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 246.41ms. Allocated memory is still 165.7MB. Free memory was 130.4MB in the beginning and 121.0MB in the end (delta: 9.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.02ms. Allocated memory is still 165.7MB. Free memory was 121.0MB in the beginning and 119.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 34.13ms. Allocated memory is still 165.7MB. Free memory was 119.5MB in the beginning and 118.4MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 248.40ms. Allocated memory is still 165.7MB. Free memory was 118.4MB in the beginning and 110.1MB in the end (delta: 8.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 917.39ms. Allocated memory is still 165.7MB. Free memory was 110.0MB in the beginning and 134.7MB in the end (delta: -24.8MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 2.55ms. Allocated memory is still 165.7MB. Free memory is still 134.7MB. 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 Your program was decomposed into 1 terminating modules (0 trivial, 1 deterministic, 0 nondeterministic). One deterministic module has affine ranking function x and consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.8s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 0.6s. Construction of modules took 0.0s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 3. Minimization of det autom 1. 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 [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3 mSDsluCounter, 5 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5 IncrementalHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 4 mSDtfsCounter, 5 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital18 mio100 ax166 hnf100 lsp60 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq133 hnf95 smp100 dnf100 smp100 tf108 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 31ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 1 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.1s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2023-11-29 07:11:52,818 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96fa984a-5601-4af4-9a6f-d3e21ec6ba91/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 Result: TRUE